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Ryota Hino

Section

Graduate School of Science

Job title

Professor

Degree

博士（理学）（東北大学）
理学修士（東北大学）

researchmap

https://researchmap.jp/read0168913

J-GLOBAL ID

200901057926840568

Research History 4

2015/04 - Present

Tohoku University　Graduate School of Science
2013/04 - 2015/03

Tohoku University　International Research Institute of Disaster Science
1998/04 - 2013/03

Tohoku University　Faculty of Science
1992/04 - 1998/03

Tohoku University　Faculty of Science

Education 3

東北大学大学院　理学研究科　地球物理学専攻

1987/04 - 1992/03
Tohoku University　Faculty of Science

1983/04 - 1987/03
大阪教育大学附属高等学校天王寺校舎

1980/04 - 1983/03

Committee Memberships 22

国立研究開発法人審議会　委員

2025/04 - Present
科学技術・学術審議会　委員

2023/02 - Present
地震調査研究推進本部　政策委員会調査観測研究部会部会長

2022 - Present
地震調査研究推進本部　地震調査委員会委員

2022 - Present
地震調査研究推進本部　政策委員会委員

2022 - Present
地震調査研究推進本部　政策委員会予算調整部会委員

2020 - Present
日本地球科学掘削コンソーシアム　正会員機関代表

2016 - Present
地震調査研究推進本部　地震調査委員会長期評価部会海溝型分科会（第二期）

2012 - Present
日本地震学会　代議員

2010/05 - Present
科学技術・学術審議会　臨時委員

2021/05 - 2023/02
科学技術・学術審議会　専門委員

2019/05 - 2021/02
地震予知研究協議会　企画部戦略室室員

2014 - 2019
International Discovery Program　Scientific Evaluation Panel member

2015 - 2018
日本地震学会　理事

2014 - 2016
科学技術・学術審議会　専門委員

2007/09 - 2009/01
International Discovery Program　Site Survey Panel member

2006 - 2009
日本地球科学掘削コンソーシアム　執行部委員

2007 - 2008
European Research Council Consolidation Grants　Evaluator

2020 -
Competitive Research Grants program King Abdullar University of Science and Tectonology　Evaluator

2019 -
Marsden Fund Counsil　Evaluato

2019 -
Canada Foundation for Innovation　Evaluator

2014 -
National Science Foundation　Evaluator

2014 -

Show all ︎Show first 5

Professional Memberships 3

米国地球物理学連合(American Geophysical Union)
日本測地学会
日本地震学会

Research Interests 2

seafloor geodesy
ocean bottom seismology

Research Areas 1

Natural sciences / Solid earth science / seismology

Awards 5

2022年日本地震学会論文賞

2023　日本地震学会
2020年日本地震学会論文賞

2021/10　日本地震学会
科学技術賞開発部門

2018/05　文部科学大臣　リアルタイム津波浸水被害予測システムの開発
2014年日本地震学会論文賞

2015/05/26　日本地震学会
坪井賞（団体賞）

2013/10/30　日本測地学会　海陸統合測地観測に基づく2011年東北地方太平洋沖地震に関する研究

Papers 214

Precise aftershock activity in the marine source region of the 2024 Noto-Hanto earthquake by rapid response observation using ocean bottom seismometers Peer-reviewed

Shinohara M., R. Hino, T. Takahashi, K. Obana, S. Kodaira, R. Azuma, T. Yamada, T. Akuhara, Y. Yamashita, E. Kurashimo, Y. Murai, T. lsse, K. Nakahigashi, H. Baba, Y. Ohta, Y. Ito, H Yakiwara, Y. Nakatani, G. Fujie, T. Sato, H. Shiobara, K. Mochizuki, S. Sakai, The_R/V Hakuho-maru_KH, and_KH, C_shipboard_science_parties

Earth, Planets and Space　77　(43)　2025/04/03

DOI： 10.1186/s40623-025-02171-3 　
A Thin and Weak Lithosphere-Asthenosphere Boundary (LAB) Beneath the Oceanic Lithosphere and its Effects on Subduction Earthquake Cycle Deformation

Tianhaozhe Sun, Kelin Wang, Jiangheng He, Fumiaki Tomita, Takeshi Iinuma, Ryota Hino, Motoyuki Kido, Yusaku Ohta

2025/03/18

DOI： 10.5194/egusphere-egu25-13084 　
Seafloor Crustal Deformation Observations Utilizing Unmanned Surface Vehicles for Monitoring Fault Locking and Sliding Processes at Subduction Zone Plate Boundaries Peer-reviewed

Takeshi Iinuma, Motoyuki Kido, Tatsuya Fukuda, Yusaku Ohta, Fumiaki Tomita, Ryota Hino, Hiroaki Takahashi, Takane Hori, Yusuke Yokota

2025 IEEE Underwater Technology (UT)　1-5　2025/03/02
Publisher: IEEE
DOI： 10.1109/ut61067.2025.10947368 　
Preface for article collection “10 years after the 2011 Tohoku earthquake: a milestone of solid earth science” Peer-reviewed

Ryota Hino, Toru Matsuzawa, Takeshi Iinuma, Shuichi Kodaira, Masaki Yamada, Roland Bürgmann

Progress in Earth and Planetary Science　11　(1)　2024/10/03
Publisher: Springer Science and Business Media LLC
DOI： 10.1186/s40645-024-00656-5 　

eISSN： 2197-4284
Spatiotemporal Evolution of Slow Slip Events at the Offshore Hikurangi Subduction Zone in 2019 Using GNSS, InSAR, and Seafloor Geodetic Data Peer-reviewed

K. Woods, L. M. Wallace, C. A. Williams, I. J. Hamling, S. C. Webb, Y. Ito, N. Palmer, R. Hino, S. Suzuki, M. K. Savage, E. Warren‐Smith, K. Mochizuki

Journal of Geophysical Research: Solid Earth　129　(8)　2024/08/22
Publisher: American Geophysical Union (AGU)
DOI： 10.1029/2024jb029068 　

ISSN： 2169-9313

eISSN： 2169-9356

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Abstract Detecting crustal deformation during transient deformation events at offshore subduction zones remains challenging. The spatiotemporal evolution of slow slip events (SSEs) on the offshore Hikurangi subduction zone, New Zealand, during February–July 2019, is revealed through a time‐dependent inversion of onshore and offshore geodetic data that also accounts for spatially varying elastic crustal properties. Our model is constrained by seafloor pressure time series (as a proxy for vertical seafloor deformation), onshore continuous Global Navigation Satellite System (GNSS) data, and Interferometric Synthetic Aperture Radar displacements. Large GNSS displacements onshore and uplift of the seafloor (10–33 mm) require peak slip during the event of 150 to >200 mm at 6–12 km depth offshore Hawkes Bay and Gisborne, comparable to maximum slip observed during previous seafloor pressure deployments at north Hikurangi. The onshore and offshore data reveal a complex evolution of the SSE, over a period of months. Seafloor pressure data indicates the slow slip may have persisted longer near the trench than suggested by onshore GNSS stations in both the Gisborne and Hawkes Bay regions. Seafloor pressure data also reveal up‐dip migration of SSE slip beneath Hawke Bay occurred over a period of a few weeks. The SSE source region appears to coincide with locations of the March 1947 M_w 7.0–7.1 tsunami earthquake offshore Gisborne and estimated great earthquake rupture sources from paleoseismic investigations offshore Hawkes Bay, suggesting that the shallow megathrust at north and central Hikurangi is capable of both seismic and aseismic rupture.
Geometrical barrier determines the updip limit of slow earthquake slip Peer-reviewed

Takeshi Akuhara, Kazuya Shiraishi, Takeshi Tsuji, Yusuke Yamashita, Hiroko Sugioka, Atikul Farazi, Shukei Ohyanagi, Yoshihiro Ito, Ryuta Arai, Eiichiro Araki, Gou Fujie, Yasuyuki Nakamura, Takashi Tonegawa, Ryosuke Azuma, Ryota Hino, Kimihiro Mochizuki, Shunsuke Takemura, Tomoaki Yamada, Masanao Shinohara

2024/08/14

DOI： 10.21203/rs.3.rs-4591362/v1 　
Updip Fluid Flow in the Crust of the Northeastern Noto Peninsula, Japan, Triggered the 2023 Mw6.2 Suzu Earthquake During Swarm Activity Peer-reviewed

Keisuke Yoshida, Naoki Uchida, Yoshiaki Matsumoto, Masaki Orimo, Tomomi Okada, Satoshi Hirahara, Shuutoku Kimura, Ryota Hino

Geophysical Research Letters　2023/10

DOI： 10.1029/2023GL106023 　
Reduction of non-tidal oceanographic fluctuations in ocean-bottom pressure records of DONET using principal component analysis to enhance transient tectonic detectability International-journal Peer-reviewed

Hideto Otsuka, Yusaku Ohta, Ryota Hino, Tatsuya Kubota, Daisuke Inazu, Tomohiro Inoue, Narumi Takahashi

Earth, Planets and Space　75　112　2023/07/18

DOI： 10.1186/s40623-023-01862-z 　

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Ocean bottom pressure-gauge (OBP) records play an essential role in seafloor geodesy. Oceanographic fluctuations in OBP data, however, pose as a significant noise source in seafloor transient crustal deformation observations, including slow slip events (SSEs), making it crucial to evaluate them quantitatively. To extract the significant fluctuation phenomena common to multiple observation networks, including oceanographic fluctuations and tectonic signals, we applied principal component analysis (PCA) to the 3-year Dense Oceanfloor Network System for Earthquakes and Tsunamis (DONET) OBP time series for 40 stations during 2016–2019. PCA could separate several oceanographic signals based on the characteristics of their spatial distributions, although evident transient tectonic signals could not be confirmed from the observed pressure records during this observed period. The spatial distribution of the first four principal components (PCs) reflected the common component, inclined component along sea depth, longitude component, and parabola-like pattern, respectively. By subtracting each PC (in particular, PC-2 and PC-4) from the time series, we could significantly reduce the sea depth dependence of OBP records, which has been highlighted in several previous studies and is also evident in this region. We interpreted PCs 2–4 as the reflection of the strength and meandering of ocean geostrophic currents based on a comparison with the PC spatial distribution of the numerical oceanographic models. In addition, to evaluate the ability of PCA to separate transient tectonic signal from OBP time series, including oceanographic fluctuations, we conducted a synthetic ramp assuming an SSE by rectangular fault and then applied PCA. The assumed synthetic tectonic signal could be separated from the oceanographic signals and included in the principal component independently depending on its amplitude, suggesting that the spatial distribution of each PC would change if the amplitude of the synthetic signal were sufficiently large. We propose a transient event-detection method based on the spatial distribution difference of a specific PC with or without a tectonic signal. We used the normalized inner product (NIP) between these PCs as the indicator of their similarities. This method can detect transient tectonic signals more significantly than the moment-magnitude scale of 5.9 from OBP records.
Recurrence intervals for M > 7 Miyagi-ken-Oki earthquakes during an M similar to 9 earthquake cycle Peer-reviewed

Ryoko Nakata, Naoki Uchida, Takane Hori, Ryota Hino

PROGRESS IN EARTH AND PLANETARY SCIENCE　10　(1)　2023/07

DOI： 10.1186/s40645-023-00566-y 　

ISSN： 2197-4284
Abrupt water temperature increases near seafloor during the 2011 Tohoku earthquake Peer-reviewed

Daisuke Inazu, Yoshihiro Ito, Ryota Hino, Wataru Tanikawa

Progress in Earth and Planetary Science　10　(1)　2023/05/16
Publisher: Springer Science and Business Media LLC
DOI： 10.1186/s40645-023-00556-0 　

eISSN： 2197-4284

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Abstract We investigated temperature records associated with seafloor pressure observations at eight stations that experienced the 2011 M_w 9 Tohoku earthquake near its epicenter. The temperature data were based on the temperature measured inside the pressure transducer. We proposed a method to estimate ambient water temperature from the internal temperature using an equation of heat conduction. The estimated seafloor water temperature showed remarkable anomalies, especially increases several hours after the M_w 9 earthquake. A station of P03 (sea depth of 1.1 km) showed an abrupt temperature increase of + 0.19 °C that occurred ~ 3 h after the earthquake, which lasted for several hours. At stations of GJT3 (sea depth of 3.3 km) and TJT1 (sea depth of 5.8 km), there were abrupt temperature anomalies of + 0.20 °C and + 0.10 °C that began to occur 3–4 h after the earthquake. These anomalies both decayed to their original levels over a few tens of days. During the decay processes, only TJT1 showed several intermittent temperature rises. A water temperature anomaly within + 0.03 °C was found up to ~ 500 m above TJT1 2 weeks after the earthquake. There was no significant anomaly at the other five stations. Processes to cause these seafloor temperature anomalies were discussed. The temperature anomaly of P03 was reasonably caused by a tsunami-generated turbidity current, as also suggested by a previous study. Meanwhile, we proposed a scenario that the abrupt temperature anomalies of GJT3/TJT1 and the intermittent anomalies of TJT1 were caused by warm water discharges from the subseafloor. The pathways of the warm water were probably composed of the branch normal fault between GJT3 and TJT1, the reverse fault near TJT1, the backstop interface, and perhaps reverse faults at the frontal prism. The proposed scenario was almost compatible with other studies based on epicentral observations. We estimated the heat properties of the initial temperature anomalies of GJT3/TJT1. The estimated heat source might be explained by that most of the geothermal fluids trapped in those fault pathways were discharged to the seafloor immediately after the earthquake. The onsets of the subsequent intermittent anomalies of TJT1 were possibly activated by low or falling ocean tidal loading.
Non-tidal oceanographic fluctuation characteristics recorded in DONET ocean-bottom pressure time series using principal component analysis

Hideto Otsuka, Yusaku Ohta, Ryota Hino, Tatsuya Kubota, Daisuke Inazu, Tomohiro Inoue, Narumi Takahashi

2023/03/28

DOI： 10.22541/essoar.167458069.92503323/v2 　
Shear wave velocity structure at the Fukushima forearc region based on H/V analysis of ambient noise recordings by ocean bottom seismometers International-journal International-coauthorship Peer-reviewed

Atikul Haque Farazi, Yoshihiro Ito, Emmanuel Soliman M Garcia, Agostiny Marrios Lontsi, Francisco José Sánchez-Sesma, Aristoteles Jaramillo, Shukei Ohyanagi, Ryota Hino, Masanao Shinohara

Geophysical Journal International　233　(3)　1801-1820　2023/01/24
Publisher: Oxford University Press (OUP)
DOI： 10.1093/gji/ggad028 　

ISSN： 0956-540X

eISSN： 1365-246X

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SUMMARY This study presents the shear wave velocity (VS) structures of sedimentary sequences and a section of the upper crustal layer in the Fukushima forearc region of the Japan Trench subduction zone, which were obtained by analysing the horizontal-to-vertical (H/V) spectral ratios of ambient vibration records. The H/V curves were derived using 31 d of continuous seismic data from 3 broad-band and 16 short-period ocean bottom seismometer (OBS) stations. Using the broad-band data, H/V ratios from 0.01 to 10 Hz were derived, but the ratios below 0.1 Hz frequencies were unusually large and temporally unstable. Characterization of seismic noise energy from ∼1 yr of seismic data of three broad-band OBSs revealed variable and elevated energy conditions below 0.1 Hz due to typical long-period oceanic noise; we link these observations with the unstable H/V ratios below this frequency. Therefore, H/V analysis was performed in the frequency range of 0.1–10 Hz for both broad-band and short-period OBSs to obtain subsurface VS profiles. For the forward calculation of the H/V ratios in the inversion process, we used the recently developed ‘hvgeneralized’ method, which is based on the diffuse field assumption, and accounts for the water layer on top of stratified media. Moreover, available prior geological and geophysical information was utilized during the inversion of the H/V curves. We found that subsurface VS ranged from approximately 30 m s−1 at the seabed to approximately 4900 m s−1 at 7000 m below the sea floor (mbsf). Starting with the best model candidate at each OBS location, the effect of the water layer on the H/V curve in the deep ocean was investigated by comparing synthetic H/V curves with and without the water layer. The synthetic H/V analysis revealed that the water layer had a significant effect on H/V amplitudes at higher frequencies (&gt;1 Hz), whereas comparatively little effect was observed at lower frequencies (&lt;1 Hz). This study provides an empirical basis for H/V analysis using OBS data to determine VS down to several kilometres of sedimentary sequences to the upper crust with high-resolution.
Assessment of S-net seafloor pressure data quality in view of seafloor geodesy International-journal Peer-reviewed

Ryota Hino, Tatsuya Kubota, Naotaka Y. Chikasada, Yusaku Ohta, Hideto Otsuka

Progress in Earth and Planetary Science　9　(1)　2022/12/30
Publisher: Springer Science and Business Media LLC
DOI： 10.1186/s40645-022-00526-y 　

eISSN： 2197-4284

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Abstract Long-term continuous observation of seafloor pressure is effective for detecting seafloor vertical deformations that are associated with transient tectonic phenomena such as slow slip events. Since the aseismic slip event prior to the 2011 Tohoku earthquake, several discoveries have been made on spontaneous slow slip events and various other types of slow earthquake along the Japan and Kuril Trenches. Seafloor observation network for earthquakes and tsunamis along the Japan Trench (S-net) is expected to provide invaluable information on slow slip activities via geodetic signals that are detected by pressure observation. This study inspects the quality of the S-net pressure data in view of seafloor geodesy by comparison with records obtained by more than 100 autonomous ocean bottom pressure recorders (OBPRs) deployed along the Japan Trench. OBPRs have long been standard tools in seafloor geodesy, and the data collected are considered a benchmark in terms of quality. Most of the S-net stations showed noise levels that are considerably higher than those of the OBPRs over periods of more than 2 d. We speculate that a strong correlation between pressure and temperature accounts for much of the long-term noise. In this study, the temperature-dependent fluctuation component was estimated by prediction filtering and removed from the original data, leading to a significant reduction in the noise level at 51 stations, which reached levels almost equivalent to those of OBPRs. Although no significant pressure changes have been identified as associated with the 2018 Boso SSE or repeated tremor bursts in the northern Japan Trench thus far, our findings indicate that these stations are sufficiently sensitive to detect slow slip events occurring nearby.
Tectonic tremors immediately after the 2011 Tohoku-Oki earthquake detected by near-trench seafloor seismic observations International-journal Peer-reviewed

Hidenobu Takahashi, Ryota Hino, Naoki Uchida, Takanori Matsuzawa, Yusaku Ohta, Syuichi Suzuki, Masanao Shinohara

Progress in Earth and Planetary Science　9　(1)　1-14　2022/12/07
Publisher: Springer Science and Business Media LLC
DOI： 10.1186/s40645-022-00525-z 　

eISSN： 2197-4284
A new mechanical perspective on a shallow megathrust near-trench slip from the high-resolution fault model of the 2011 Tohoku-Oki earthquake International-journal Peer-reviewed

Tatsuya Kubota, Tatsuhiko Saito, Ryota Hino

Progress in Earth and Planetary Science　9　(1)　68　2022/12/05
Publisher: Japan Geoscience Union
DOI： 10.1186/s40645-022-00524-0 　

eISSN： 2197-4284

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The 2011 Tohoku-Oki earthquake generated a surprisingly large near-trench slip, and earth scientists have devoted significant attention to understanding why. Some studies proposed special rupture mechanisms, such as extensive dynamic frictional weakening; others simulated this near-trench slip behavior without supposing the extensive dynamic weakening. However, we have not reached a decisive conclusion for this question due to limited spatial near-trench slip resolution. Hence, in this study we use new tsunami data recorded just above the large slip area in addition to offshore and onshore geodetic data to improve the spatial resolution of stress release in the Tohoku-Oki earthquake and quantitatively examine the mechanical state of the plate interface. A maximum slip of 53 m reaching the trench and an insignificant stress drop (< 3 MPa) at the shallowest portion of the fault were estimated. Based on our modeling results and the past experimental studies, it is suggested that friction at the shallow near-trench portion should be inherently low both before and during the earthquake. This result provides perspectives on the shallow slip behavior along the plate boundary, in which the strain energy accumulation at the deep portion of the fault accounts for the anomalous large shallow slip, but shallow mechanical coupling does not. A large shallow slip has been considered as a result of the release of sufficiently large strain energy at the shallow portion of the plate interface, but we suggest that shallow slips similar to that during the 2011 Tohoku-Oki earthquake may occur in any subduction zones where the energy sufficiently accumulates only in the deeper portion.
USV-Observed Turbulent Heat Flux Induced by Late Spring Cold Dry Air Incursion over Sub-Mesoscale Warm Regions off Sanriku, Japan International-journal Invited Peer-reviewed

Akira Nagano, Takuya Hasegawa, Keisuke Ariyoshi, Takeshi Iinuma, Tatsuya Fukuda, Nobuhiro Fujii, Fumiaki Tomita, Ryota Hino

Sensors　22　(24)　9695　2022/12

DOI： 10.3390/s22249695 　
Rapid and quantitative uncertainty estimation of coseismic slip distribution for large interplate earthquakes using real-time GNSS data and its application to tsunami inundation prediction International-journal Peer-reviewed

Keitaro Ohno, Yusaku Ohta, Ryota Hino, Shunichi Koshimura, Akihiro Musa, Takashi Abe, Hiroaki Kobayashi

Earth, Planets and Space　74　(1)　2022/12
Publisher: Springer Science and Business Media LLC
DOI： 10.1186/s40623-022-01586-6 　

eISSN： 1880-5981

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<title>Abstract</title>This study proposes a new method for the uncertainty estimation of coseismic slip distribution on the plate interface deduced from real-time global navigation satellite system (GNSS) data and explores its application for tsunami inundation prediction. Jointly developed by the Geospatial Information Authority of Japan and Tohoku University, REGARD (REal-time GEONET Analysis system for Rapid Deformation monitoring) estimates coseismic fault models (a single rectangular fault model and slip distribution model) in real time to support tsunami prediction. The estimated results are adopted as part of the Disaster Information System, which is used by the Cabinet Office of the Government of Japan to assess tsunami inundation and damage. However, the REGARD system currently struggles to estimate the quantitative uncertainty of the estimated result, although the obtained result should contain both observation and modeling errors caused by the model settings. Understanding such quantitative uncertainties based on the input data is essential for utilizing this resource for disaster response. We developed an algorithm that estimates the coseismic slip distribution and its uncertainties using Markov chain Monte Carlo methods. We focused on the Nankai Trough of southwest Japan, where megathrust earthquakes have repeatedly occurred, and used simulation data to assume a Hoei-type earthquake. We divided the 2951 rectangular subfaults on the plate interface and designed a multistage sampling flow with stepwise perturbation groups. As a result, we successfully estimated the slip distribution and its uncertainty at the 95% confidence interval of the posterior probability density function. Furthermore, we developed a new visualization procedure that shows the risk of tsunami inundation and the probability on a map. Under the algorithm, we regarded the Markov chain Monte Carlo samples as individual fault models and clustered them using the k-means approach to obtain different tsunami source scenarios. We then calculated the parallel tsunami inundations and integrated the results on the map. This map, which expresses the uncertainties of tsunami inundation caused by uncertainties in the coseismic fault estimation, offers quantitative and real time insights into possible worst-case scenarios. <bold>Graphical Abstract</bold>
Precise aftershock distribution of the 2019 Yamagata-oki earthquake using newly developed simple anchored-buoy ocean bottom seismometers and land seismic stations International-journal Peer-reviewed

Masanao Shinohara, Shin’ichi Sakai, Tomomi Okada, Hiroshi Sato, Yusuke Yamashita, Ryota Hino, Kimihiro Mochizuki, Takeshi Akuhara

Earth, Planets and Space　74　(1)　2022/12
Publisher: Springer Science and Business Media LLC
DOI： 10.1186/s40623-021-01562-6 　

eISSN： 1880-5981

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Abstract An earthquake with a magnitude of 6.7 occurred in the Japan Sea off Yamagata on June 18, 2019. The mainshock had a source mechanism of reverse-fault type with a compression axis of WNW–ESE direction. Since the source area is positioned in a marine area, seafloor seismic observation is indispensable for obtaining the precise distribution of the aftershocks. The source area has a water depth of less than 100 m, and fishing activity is high. It is difficult to perform aftershock observation using ordinary free-fall pop-up type ocean bottom seismometers (OBSs). We developed a simple anchored-buoy type OBS for shallow water depths and performed the seafloor observation using this. The seafloor seismic unit had three-component seismometers and a hydrophone. Two orthogonal tiltmeters and an azimuth meter monitored the attitude of the package. For seismic observation at shallow water depth, we concluded that an anchored-buoy system would have the advantage of avoiding accidents. Our anchored-buoy OBS was based on a system used in fisheries. We deployed three anchored-buoy OBSs in the source region where the water depth was approximately 80 m on July 5, 2019, and two of the OBSs were recovered on July 13, 2019. Temporary land seismic stations with a three-component seismometer were also installed. The arrival times of P- and S-waves were read from the records of the OBSs and land stations, and we located hypocenters with correction for travel time. A preliminary location was performed using absolute travel time and final hypocenters were obtained using the double-difference method. The aftershocks were distributed at a depth range of 2.5 km to 10 km and along a plane dipping to the southeast. The plane formed by the aftershocks is consistent with the focal mechanism of the mainshock. The activity region of the aftershocks was positioned in the upper part of the upper crust. Focal mechanisms were estimated using the polarity of the first arrivals. Although many aftershocks had a reverse-fault focal mechanism similar to the focal solution of the mainshock, normal-fault type and strike–slip fault type focal mechanisms were also estimated. Graphical Abstract
Using Seafloor Geodesy to Detect Vertical Deformation at the Hikurangi Subduction Zone: Insights From Self‐Calibrating Pressure Sensors and Ocean General Circulation Models International-journal International-coauthorship Peer-reviewed

K. Woods, S. C. Webb, L. M. Wallace, Y. Ito, C. Collins, N. Palmer, R. Hino, M. K. Savage, D. M. Saffer, E. E. Davis, D. H. N. Barker

Journal of Geophysical Research: Solid Earth　127　(12)　2022/11/29
Publisher: American Geophysical Union (AGU)
DOI： 10.1029/2022jb023989 　

ISSN： 2169-9313

eISSN： 2169-9356
Impact of employing a waveglider on GNSS-Acoustic survey along the Japan trench

Motoyuki Kido, Chie Honsho, Fumiaki Tomita, Yusaku Ohta, Ryota Hino, Takeshi Iinuma

2022/03/27
Publisher: Copernicus {GmbH}
DOI： 10.5194/egusphere-egu22-2138 　
Real-time automatic uncertainty estimation of coseismic single rectangular fault model using GNSS data Peer-reviewed

Keitaro Ohno, Yusaku Ohta, Satoshi Kawamoto, Satoshi Abe, Ryota Hino, Shunichi Koshimura, Akihiro Musa, Hiroaki Kobayashi

Earth, Planets and Space　73　(1)　2021/12
Publisher: Springer Science and Business Media LLC
DOI： 10.1186/s40623-021-01425-0 　

eISSN： 1880-5981

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<title>Abstract</title>Rapid estimation of the coseismic fault model for medium-to-large-sized earthquakes is key for disaster response. To estimate the coseismic fault model for large earthquakes, the Geospatial Information Authority of Japan and Tohoku University have jointly developed a real-time GEONET analysis system for rapid deformation monitoring (REGARD). REGARD can estimate the single rectangular fault model and slip distribution along the assumed plate interface. The single rectangular fault model is useful as a first-order approximation of a medium-to-large earthquake. However, in its estimation, it is difficult to obtain accurate results for model parameters due to the strong effect of initial values. To solve this problem, this study proposes a new method to estimate the coseismic fault model and model uncertainties in real time based on the Bayesian inversion approach using the Markov Chain Monte Carlo (MCMC) method. The MCMC approach is computationally expensive and hyperparameters should be defined in advance via trial and error. The sampling efficiency was improved using a parallel tempering method, and an automatic definition method for hyperparameters was developed for real-time use. The calculation time was within 30 s for 1 × 10⁶ samples using a typical single LINUX server, which can implement real-time analysis, similar to REGARD. The reliability of the developed method was evaluated using data from recent earthquakes (2016 Kumamoto and 2019 Yamagata-Oki earthquakes). Simulations of the earthquakes in the Sea of Japan were also conducted exhaustively. The results showed an advantage over the maximum likelihood approach with a priori information, which has initial value dependence in nonlinear problems. In terms of application to data with a small signal-to-noise ratio, the results suggest the possibility of using several conjugate fault models. There is a tradeoff between the fault area and slip amount, especially for offshore earthquakes, which means that quantification of the uncertainty enables us to evaluate the reliability of the fault model estimation results in real time.
Editorial: Frontiers in seafloor geodesy International-journal International-coauthorship Invited Peer-reviewed

Hino, R, K. Tadokoro, L. Wallace

Frontiers in Earth Science　2021/08

DOI： 10.3389/feart.2021.744217 　
Water Depth Dependence of Long‐Range Correlation in Nontidal Variations in Seafloor Pressure International-coauthorship Peer-reviewed

Tomohiro Inoue, Yoshihiro Ito, Laura M. Wallace, Yutaka Yoshikawa, Daisuke Inazu, Emmanuel Soliman M. Garcia, Tomoya Muramoto, Spahr C. Webb, Kazuaki Ohta, Syuichi Suzuki, Ryota Hino

Geophysical Research Letters　48　(8)　2021/04/28
Publisher: American Geophysical Union (AGU)
DOI： 10.1029/2020gl092173 　

ISSN： 0094-8276

eISSN： 1944-8007
Extracting Near‐Field Seismograms From Ocean‐Bottom Pressure Gauge Inside the Focal Area: Application to the 2011 Mw 9.1 Tohoku‐Oki Earthquake Peer-reviewed

Tatsuya Kubota, Tatsuhiko Saito, Hiroaki Tsushima, Ryota Hino, Yusaku Ohta, Syuichi Suzuki, Daisuke Inazu

Geophysical Research Letters　48　(7)　2021/04/16
Publisher: American Geophysical Union (AGU)
DOI： 10.1029/2020gl091664 　

ISSN： 0094-8276

eISSN： 1944-8007
Presence of interplate channel layer controls of slip during and after the 2011 Tohoku-Oki earthquake through the frictional characteristics International-journal Peer-reviewed

Ryoko Nakata, Takane Hori, Seiichi Miura, Ryota Hino

Scientific Reports　11　(1)　6480-6480　2021/03
Publisher: Springer Science and Business Media LLC
DOI： 10.1038/s41598-021-86020-9 　

eISSN： 2045-2322

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<title>Abstract</title>There are significant differences between the middle and southern segments of the Japan Trench in terms of the seismic and aseismic slips on the plate interface and seismic velocity structures. Although the large coseismic slip of the 2011 Tohoku-Oki earthquake was limited to the middle segment, the observed negative residual gravity anomaly area in the southern segment corresponds to the postseismic slip area of the Tohoku-Oki earthquake. A density distribution model can explain the different slip behaviours of the two segments by considering their structural differences. The model indicates that the plate interface in the south was covered with a thick channel layer, as indicated by seismic survey imaging, and this layer resulted in a residual gravity anomaly. Numerical simulations which assumed evident frictional heterogeneity caused by the layer in the south efficiently reproduced M9 earthquakes recurring only in the middle, followed by evident postseismic slips in the south. This study proposes that although the layer makes the megathrust less compliant to seismic slip, it promotes aseismic slips following the growth of seismic slips on the fault in an adjacent region.
Stagnant forearc mantle wedge inferred from mapping of shear-wave anisotropy using S-net seafloor seismometers International-coauthorship Peer-reviewed

Naoki Uchida, Junichi Nakajima, Kelin Wang, Ryota Takagi, Keisuke Yoshida, Takashi Nakayama, Ryota Hino, Tomomi Okada, Youichi Asano

Nature Communications　11　(1)　2020/12

DOI： 10.1038/s41467-020-19541-y 　

ISSN： 2041-1723

eISSN： 2041-1723
Improvement on spatial resolution of a coseismic slip distribution using postseismic geodetic data through a viscoelastic inversion Peer-reviewed

Fumiaki Tomita, Takeshi Iinuma, Yusaku Ohta, Ryota Hino, Motoyuki Kido, Naoki Uchida

Earth, Planets and Space　72　(1)　2020/12
Publisher: Springer Science and Business Media LLC
DOI： 10.1186/s40623-020-01207-0 　

eISSN： 1880-5981
Detailed seafloor observations on a deep-sea terrace along the Japan Trench after the 2011 Tohoku Earthquake Peer-reviewed

Kiichiro Kawamura, Ayaka Wada, Miriam Römer, Michael Strasser, Hiske G Fink, Yoshihiro Ito, Ryota Hino

Springer　in press　405-410　2020/11
Publisher: Springer International Publishing
DOI： 10.1007/978-3-030-60196-6_32 　

ISSN： 2662-1894

eISSN： 2662-1908
Sea Surface Gravity Waves Excited by Dynamic Ground Motions from Large Regional Earthquakes Peer-reviewed

Yoshihiro Ito, Spahr C. Webb, Yoshihiro Kaneko, Laura M. Wallace, Ryota Hino

Seismological Research Letters　91　(4)　2268-2277　2020/07/01
Publisher: Seismological Society of America (SSA)
DOI： 10.1785/0220190267 　

ISSN： 0895-0695

eISSN： 1938-2057

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<title>Abstract</title> Infragravity waves on the sea surface near coastlines are occasionally excited by static displacement caused by large local earthquakes and recorded as tsunamis. However, tsunamis induced by ground motions from seismic waves are rarely observed, especially far from earthquake focal areas. We investigated seafloor pressure variations in the infragravity band at the Hikurangi subduction zone following the M 7.8 Kaikōura and M 7.1 Te Araroa earthquakes. Anomalous infragravity waves were observed at 0.2–20 mHz at sites overlying a low-velocity accretionary wedge offshore of the east coast of New Zealand’s North Island accompanying the Rayleigh-wave arrivals. The maximum amplitude of these ultra-low-frequency waves was similar to the tsunami that propagated from the earthquake focal area hours later. The amplitude of the pressure signal from these waves observed offshore varied inversely with water depth, suggesting that sea surface gravity waves were excited by Rayleigh or Love waves amplified within the accretionary wedge.
The state of stress on the fault before during, and after a major earthquake International-coauthorship Invited Peer-reviewed

Brodsky, E, J. Mori, L. Anderson, F. M. Chester, M. Conin, E. M. Dunham, N. Eguchi, P. M. Fluton, R. Hino, T. Hirose, M. Ikari, T. Ishikawa, T. Jeppson, Y. Kano, J. Kirkpatrick, S. Kodaira, W. Lin, Y. Nakamura, H. Rabnowitz, C. Regalla, F. Remitti, C. Rowe, D. M. Saffer, S. Saito, J. Sample, Y. Sanada, H. M. Savage, T. Sun, S. Toczko, K. Ujiie, M. Wolfson-Schwehr, T. Yang

Annual Reviews of Earth and Planetary Sciences　48　49-74　2020

DOI： 10.1146/annurev-earth-053018-060507 　

ISSN： 0084-6597
2D spatial distribution of reflection intensity on the upper surface of the Philippine Sea plate off the Boso Peninsula, Japan Peer-reviewed

Akihiro Kono, Toshinori Sato, Masanao Shinohara, Kimihiro Mochizuki, Tomoaki Yamada, Kenji Uehira, Takashi Shinbo, Yuya Machida, Ryota Hino, Ryousuke Azuma

Tectonophysics　774　228206-228206　2020/01
Publisher: Elsevier BV
DOI： 10.1016/j.tecto.2019.228206 　

ISSN： 0040-1951
Fault model of the 2012 doublet earthquake near the up-dip end of the 2011 Tohoku-Oki earthquake, based on a near-field tsunami: implication for intraplate stress state Peer-reviewed

Kubota, T., R. Hino, D. Inazu, S. Suzuki

Progress in Earth and Planetary Science　6　67　2019/12
Configuration and structure of the Philippine Sea Plate off Boso, Japan: constraints on the shallow subduction kinematics, seismicity, and slow slip events Peer-reviewed

Ito Aki, Tonegawa Takashi, Uchida Naoki, Yamamoto Yojiro, Suetsugu Daisuke, Hino Ryota, Sugioka Hiroko, Obana Koichiro, Nakahigashi Kazuo, Shinohara Masanao

Earth, Planets and Space　71　(1)　111-111　2019/10/25
Publisher: SpringerOpen
DOI： 10.1186/s40623-019-1090-y 　

ISSN： 1343-8832
Ultra-long Duration of Seismic Ground Motion Arising From a Thick, Low-Velocity Sedimentary Wedge Peer-reviewed

Yoshihiro Kaneko, Yoshihiro Ito, Bryant Chow, Laura M. Wallace, Carl Tape, Ronni Grapenthin, Elisabetta D'Anastasio, Stuart Henrys, Ryota Hino

JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH　124　(10)　10347-10359　2019/10

DOI： 10.1029/2019JB017795 　

ISSN： 2169-9313

eISSN： 2169-9356
Quantitative relationship between aseismic slip propagation speed and frictional properties Peer-reviewed

Keisuke Ariyoshi, Jean-Paul Ampuero, Roland Burgrnann, Toru Matsuzawa, Akira Hasegawa, Ryota Hino, Takane Hori

TECTONOPHYSICS　767　2019/09

DOI： 10.1016/j.tecto.2019.06.021 　

ISSN： 0040-1951

eISSN： 1879-3266
Assessment of directional accuracy of GNSS-Acoustic measurement using a slackly moored buoy Peer-reviewed

Imano, M, M. Kido, C. Honsho, Y. Ohta, N. Takahashi, T. Fukuda, H. Ochi, R. Hino

Prog. in Earth Planet. Sci.　6　56　2019/08
Tremor and Inferred Slow Silo Associated With Afterslip of the 2011 Tohoku Earthquake Peer-reviewed

Kazuaki Ohta, Yoshihiro Ito, Ryota Hino, Shukei Ohyanagi, Takanori Matsuzawa, Hajime Shiobara, Masanao Shinohara

GEOPHYSICAL RESEARCH LETTERS　46　(9)　4591-4598　2019/05

DOI： 10.1029/2019GL082468 　

ISSN： 0094-8276

eISSN： 1944-8007
Seafloor Crustal Deformation on Ocean Bottom Pressure Records With Nontidal Variability Corrections: Application to Hikurangi Margin, New Zealand Peer-reviewed

Tomoya Muramoto, Yoshihiro Ito, Daisuke Inazu, Laura M. Wallace, Ryota Hino, Syuichi Suzuki, Spahr C. Webb, Stuart Henrys

GEOPHYSICAL RESEARCH LETTERS　46　(1)　303-310　2019/01

DOI： 10.1029/2018GL080830 　

ISSN： 0094-8276

eISSN： 1944-8007
Spatio-temporal changes in the seismic velocity induced by the 2011 Tohoku-Oki earthquake and slow slip event revealed from seismic interferometry, using ocean bottom seismometer's records Peer-reviewed

Miyuu Uemura, Yoshihiro Ito, Kazuaki Ohta, Ryota Hino, Masanao Shinohara

PROGRESS IN EARTH AND PLANETARY SCIENCE　5　2018/12

DOI： 10.1186/s40645-018-0240-3 　

ISSN： 2197-4284
Tsunami source inversion using time-derivative waveform of offshore pressure records to reduce effects of non-tsunami components Peer-reviewed

Tatsuya Kubota, Wataru Suzuki, Takeshi Nakamura, Naotaka Y Chikasada, Shin Aoi, Narumi Takahashi, Ryota Hino

Geophysical Journal International　215　(2)　1200-1214　2018/11/01
Publisher: Oxford University Press (OUP)
DOI： 10.1093/gji/ggy345 　

ISSN： 0956-540X

eISSN： 1365-246X
Spatiotemporal Variation of Tectonic Tremor Activity Before the Tohoku-Oki Earthquake Peer-reviewed

Satoshi Katakami, Yoshihiro Ito, Kazuaki Ohta, Ryota Hino, Syuichi Suzuki, Masanao Shinohara

JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH　123　(11)　9676-9688　2018/11

DOI： 10.1029/2018JB016651 　

ISSN： 2169-9313

eISSN： 2169-9356
Using Tsunami Waves Reflected at the Coast to Improve Offshore Earthquake Source Parameters: Application to the 2016 Mw 7.1 Te Araroa Earthquake, New Zealand Peer-reviewed

Tatsuya Kubota, Tatsuhiko Saito, Yoshihiro Ito, Yoshihiro Kaneko, Laura M. Wallace, Syuichi Suzuki, Ryota Hino, Stuart Henrys

JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH　123　(10)　8767-8779　2018/10

DOI： 10.1029/2018JB015832 　

ISSN： 2169-9313

eISSN： 2169-9356
Real-time tsunami inundation forecast system for tsunami disaster prevention and mitigation Peer-reviewed

Akihiro Musa, Osamu Watanabe, Hiroshi Matsuoka, Hiroaki Hokari, Takuya Inoue, Yoichi Murashima, Yusaku Ohta, Ryota Hino, Shunichi Koshimura, Hiroaki Kobayashi

Journal of Supercomputing　74　1-21　2018/04/16
Publisher: Springer New York LLC
DOI： 10.1007/s11227-018-2363-0 　

ISSN： 1573-0484 0920-8542
Learning from crustal deformation associated with the M9 2011 Tohoku-oki earthquake Invited Peer-reviewed

Kelin Wang, Tianhaozhe Sun, Lonn Brown, Ryota Hino, Fumiaki Tomita, Motoyuki Kido, Takeshi Iinuma, Shuichi Kodaira, Toshiya Fujiwara

Geosphere　14　(2)　552-571　2018/02/24
Publisher: Geological Society of America
DOI： 10.1130/GES01531.1 　

ISSN： 1553-040X
Tsunami inundation and damage forecasting with high-performance computing infrastructure

S. Koshimura, Y. Murashima, A. Musa, R. Hino, Y. Ohta, H. Kobayashi, M. Kachi, Y. Sato

11th National Conference on Earthquake Engineering 2018, NCEE 2018: Integrating Science, Engineering, and Policy　6　3423-3427　2018
Publisher: Earthquake Engineering Research Institute
Seafloor geodetic observations to reveal co- and postseismic slip distributions of the 2011 Tohoku-Oki earthquake Peer-reviewed

Tomita, F, Y. Ohta, T. Iinuma, R. Hino, M. Kido, N. Uchida

2018 OCEANS - MTS/IEEE Kobe Techno-Oceans (OTO)　1-4　2018

DOI： 10.1109/OCEANSKOBE.2018.8559370 　
Along-arc heterogeneity of the seismic structure around a large coseismic shallow slip area of the 2011 Tohoku-Oki earthquake: 2-D Vp structure estimation through an airgun-ocean bottom seismometer experiment in the Japan Trench subduction zone Peer-reviewed

Azuma, R, R. Hino, Y. Ohta, Y. Ito, K. Mochizuki, K. Uehira, Y. Murai, T. Sato, T. Takanami, M. Shinohara, T. Kanazawa

J. Geophys. Res.　123　(6)　5249-5264　2018

DOI： 10.1029/2017JB015361 　

ISSN： 2169-9313

eISSN： 2169-9356
Role of real-time GNSS in near-field tsunami forecasting Peer-reviewed

Ohta, Y, T. Inoue, S. Koshimura, S. Kawamaoto, R. Hino

J. Disaster Res.　13　(3)　453-459　2018

DOI： 10.20965/jdr.2018.p0453 　

ISSN： 1881-2473

eISSN： 1883-8030
Onboard realtime processing of GPS-Acoustic data for moored buoy-based observation Peer-reviewed

Kido, M, M. Imano, Y. Ohta, T. Fukuda, N. Takahashi, S. Tsubone, Y. Ishihara, H. Ochi, K. Imai, R. Hino

J. Disaster Res.　13　(3)　472-488　2018
Publisher: Fuji Technology Press Ltd.
DOI： 10.20965/jdr.2018.p0472 　

ISSN： 1881-2473

eISSN： 1883-8030

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Realtime observations of vertical/horizontal seafloor movements and sea surface height associated with a huge earthquake are crucial for immediate recognition of its causal fault rupture, so that tsunami early warning can be issued and also the risk of subsequent ruptures can be evaluated. For this purpose, we developed an offshore monitoring system using a moored buoy platform to measure, in realtime, the three observables mentioned above and operated it on a trial basis for a year. While operating the system, GPS-acoustic observation of horizontal movement on the buoy was especially a new challenge. To achieve realtime GPS-acoustic observation under conditions of the limited power supply and narrow bandwidth in satellite communication, we developed special hardware suitable for use on a buoy and software to minimize onboard computational procedures and data transmission. The system functioned properly through the year; 53 regular weekly measurements and 55 on-demand measurements at arbitrary timings. Each measurement consisted of 11 successive acoustic rangings. The buoy tended to drift far from the preferred position for GPS-acoustic measurement, i.e., the center of the seafloor transponder array, due to strong current. The accuracy of the GPS-acoustic positioning achieved ∼46 cm (2σ) even only with “a single ranging” when the buoy was inside the array, while it degraded to ∼1.0 m when the buoy was outside the array. Although the 1.0 m accuracy is a detectable level of possible displacement due to a M8-class earthquake in the source region, further improvement to keep the drifting range smaller despite the current will enhance the utilization of the system.
Estimation of Seismic Centroid Moment Tensor Using Ocean Bottom Pressure Gauges as Seismometers Peer-reviewed

Tatsuya Kubota, Tatsuhiko Saito, Wataru Suzuki, Ryota Hino

Geophysical Research Letters　44　(21)　10,907-10,915　2017/11/16
Publisher: American Geophysical Union (AGU)
DOI： 10.1002/2017gl075386 　

ISSN： 0094-8276

eISSN： 1944-8007
Advances of tsunami inundation forecasting and its future perspectives Peer-reviewed

Shunichi Koshimura, Ryota Hino, Yusaku Ohta, Hiroaki Kobayashi, Yoichi Murashima, Akihiro Musa

OCEANS 2017 - Aberdeen　2017-　1-4　2017/10/25
Publisher: Institute of Electrical and Electronics Engineers Inc.
DOI： 10.1109/OCEANSE.2017.8084753 　
Tomographic image of crust and upper mantle off the Boso Peninsula using data from an ocean-bottom seismograph array Peer-reviewed

Aki Ito, Yojiro Yamamoto, Ryota Hino, Daisuke Suetsugu, Hiroko Sugioka, Masaru Nakano, Koichiro Obana, Kazuo Nakahigashi, Masanao Shinohara

EARTH PLANETS AND SPACE　69　(118)　2017/08

DOI： 10.1186/s40623-017-0703-6 　

ISSN： 1880-5981
Geometry and spatial variations of seismic reflection intensity of the upper surface of the Philippine Sea plate off the Boso Peninsula, Japan Peer-reviewed

Akihiro Kono, Toshinori Sato, Masanao Shinohara, Kimihiro Mochizuki, Tomoaki Yamada, Kenji Uehira, Takashi Shinbo, Yuya Machida, Ryota Hino, Ryousuke Azuma

TECTONOPHYSICS　709　(10)　44-54　2017/07

DOI： 10.1016/j.tecto.2017.05.001 　

ISSN： 0040-1951

eISSN： 1879-3266
Along-trench variation in seafloor displacements after the 2011 Tohoku earthquake Peer-reviewed

Fumiaki Tomita, Motoyuki Kido, Yusaku Ohta, Takeshi Iinuma, Ryota Hino

SCIENCE ADVANCES　3　(7)　e1700113　2017/07

DOI： 10.1126/sciadv.1700113 　

ISSN： 2375-2548
Upper boundaries of the Pacific and Philippine Sea plates near the triple junction off the Boso Peninsula deduced from ocean-bottom seismic observations Peer-reviewed

Aki Ito, Hiroko Sugioka, Koichiro Obana, Ryota Hino, Daisuke Suetsugu, Kazuo Nakahigashi, Masanao Shinohara, Masaru Nakano, Yojiro Yamamoto

EARTH PLANETS AND SPACE　69　2017/02

DOI： 10.1186/s40623-017-0608-4 　

ISSN： 1880-5981
Quantified relationship between frictional properties and slow earthquake migration speed Peer-reviewed

Ariyoshi Keisuke, Matsuzawa Toru, Burgmann Roland, Hasegawa Akira, Hino Ryota, Hori Takane

Annual Meeting of the Geological Society of Japan　2017　(0)　333-333　2017
Publisher: The Geological Society of Japan
DOI： 10.14863/geosocabst.2017.0_333 　

ISSN： 1348-3935

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[Program canceled for typhoon] Program canceled for typhoon. However, This abstract is quotable and viewable on PDF.
Rapid Tsunami Inundation and Damage Estimation System with High-performance Computing and Networking Peer-reviewed

Shunichi Koshimura, Yoichi Murashima, Akihiro Musa, Ryota Hino, Yusaku Ohta, Hiroaki Kobayashi, Masahiro Kachi, Yoshihiro Sato

Proceedings of International Tsunami Symposium 2017　2017
Development and assessment of real-time fault model estimation routines in the GEONET real-time processing system Peer-reviewed

Satoshi Kawamoto, Kohei Miyagawa, Toshihiro Yahagi, Masaru Todoriki, Takuya Nishimura, Yusaku Ohta, Ryota Hino, Satoshi Miura

International Association of Geodesy Symposia　145　89-96　2017
Publisher: Springer Verlag
DOI： 10.1007/1345_2015_49 　

ISSN： 0939-9585
Interplate coupling in and around the rupture area of the 2011 Tohoku earthquake (M9.0) before its occurrence based on terrestrial and seafloor geodetic observations Peer-reviewed

Takeshi Iinuma, Ryota Hino, Motoyuki Kido, Yusaku Ohta, Satoshi Miura

International Association of Geodesy Symposia　145　11-18　2017
Publisher: Springer Verlag
DOI： 10.1007/1345_2015_48 　

ISSN： 0939-9585
Buoy platform development for observation of tsunami and crustal deformation Peer-reviewed

Narumi Takahashi, Yasuhisa Ishihara, Tatsuya Fukuda, Hiroshi Ochi, Jun’ichiro Tahara, Takami Mori, Mitsuyasu Deguchi, Motoyuki Kido, Yusaku Ohta, Ryota Hino, Katsuhiko Mutoh, Gosei Hashimoto, Osamu Motohashi, Yoshiyuki Kaneda

International Association of Geodesy Symposia　145　97-103　2017
Publisher: Springer Verlag
DOI： 10.1007/1345_2015_114 　

ISSN： 0939-9585
Improvement in the accuracy of real-time GPS/acoustic measurements using a multi-purpose moored buoy system by removal of acoustic multipath Peer-reviewed

Misae Imano, Motoyuki Kido, Yusaku Ohta, Tatsuya Fukuda, Hiroshi Ochi, Narumi Takahashi, Ryota Hino

International Association of Geodesy Symposia　145　105-113　2017
Publisher: Springer Verlag
DOI： 10.1007/1345_2015_192 　

ISSN： 0939-9585
Coseismic slip model of offshore moderate interplate earthquakes on March 9, 2011 in Tohoku using tsunami waveforms Peer-reviewed

Tatsuya Kubota, Ryota Hino, Daisuke Inazu, Yoshihiro Ito, Takeshi Iinuma, Yusaku Ohta, Syuichi Suzuki, Kensuke Suzuki

EARTH AND PLANETARY SCIENCE LETTERS　458　241-251　2017/01

DOI： 10.1016/j.epsl.2016.10.047 　

ISSN： 0012-821X

eISSN： 1385-013X
GNSSによるリアルタイム断層推定情報の津波解析への適用手法の検討 Peer-reviewed

井上拓也, 太田雄策, 越村俊一, 日野亮太, 川元智司, 檜山洋平, 道家友紀

海岸工学論文集　72　(2)　355-360　2016/11
Publisher: Japan Society of Civil Engineers
DOI： 10.2208/kaigan.72.I_355 　

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 Applicability of rapidly estimated fault models based on real-time GNSS to tsunami simulation was examined, in comparison to tsunami survey data in 2011 off the Pacific coast of Tohoku Earthquake. GNSS models could show acceptable reproducibility in terms of tsunami height along the Pacific coast except the ria coast in Sanriku where considerably high tsunami observed in 2011. Tsunami inundation for lowland was fairly modeled by GNSS models in the case of city areas facing the Ishinomaki Bay. We also proposed a new method for rapidly estimating initial tsunami height from a slip distribution model that consists of a number of triangular sub-faults through approximation to a set of rectangular sub-faults.
緊急地震速報を用いた二段階多数津波シナリオ解析による最悪シナリオ即時推定 Peer-reviewed

古屋敬士, 越村俊一, 日野亮太, 太田雄策, 井上拓也

土木学会論文集B2 (海岸工学)　72　(2)　307-312　2016/11
Publisher: Japan Society of Civil Engineers
DOI： 10.2208/kaigan.72.I_307 　

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 In recent years, real-time tsunami inundation forecasting has been developed with the modern computing power and earthquake tsunami observation system. However, uncertainties in tsunami source model derived from fault model may cause underestimation of tsunami damage. To prevent it, from disaster management point of view, we aim to determine the worst tsunami scenario, using seismic information of Earthquake Early Warning (EEW) that can be obtained after the event triggered. The method was applied to 60 cases of a hypothetical-earthquake, and verified that the method can effectively search the maximum tsunami height that may be happened as the worst tsunami scenario in 3 minutes.
Seafloor observations indicate spatial separation of coseismic and postseismic slips in the 2011 Tohoku earthquake Peer-reviewed

Takeshi Iinuma, Ryota Hino, Naoki Uchida, Wataru Nakamura, Motoyuki Kido, Yukihito Osada, Satoshi Miura

NATURE COMMUNICATIONS　7　2016/11

DOI： 10.1038/ncomms13506 　

ISSN： 2041-1723
The great 1933 Sanriku-oki earthquake: reappraisal of the main shock and its aftershocks and implications for its tsunami using regional tsunami and seismic data Peer-reviewed

Naoki Uchida, Stephen H. Kirby, Norihito Umino, Ryota Hino, Tomoe Kazakami

GEOPHYSICAL JOURNAL INTERNATIONAL　206　(3)　1619-1633　2016/09

DOI： 10.1093/gji/ggw234 　

ISSN： 0956-540X

eISSN： 1365-246X
Development and examination of new algorithms of traveltime detection in GPS/acoustic geodetic data for precise and automated analysis Peer-reviewed

Ryosuke Azuma, Fumiaki Tomita, Takeshi Iinuma, Motoyuki Kido, Ryota Hino

EARTH PLANETS AND SPACE　68　2016/08

DOI： 10.1186/s40623-016-0521-2 　

ISSN： 1880-5981
Tsunami source uncertainty estimation: The 2011 Japan tsunami Peer-reviewed

Jan Dettmer, Rhys Hawkins, Phil R. Cummins, Jakir Hossen, Malcolm Sambridge, Ryota Hino, Daisuke Inazu

JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH　121　(6)　4483-4505　2016/06

DOI： 10.1002/2015JB012764 　

ISSN： 2169-9313

eISSN： 2169-9356
Slow slip near the trench at the Hikurangi subduction zone, New Zealand Peer-reviewed

Laura M. Wallace, Spahr C. Webb, Yoshihiro Ito, Kimihiro Mochizuki, Ryota Hino, Stuart Henrys, Susan Y. Schwartz, Anne F. Sheehan

SCIENCE　352　(6286)　701-704　2016/05

DOI： 10.1126/science.aaf2349 　

ISSN： 0036-8075

eISSN： 1095-9203
Ocean bottom observation equipment as a recorder for sedimentary event

Miura Ryo, Arai Kazuno, Kanamatsu Toshiya, Kasaya Takafumi, Hino Ryota, Kaiho Yuka

Annual Meeting of the Geological Society of Japan　2016　093　2016
Publisher: The Geological Society of Japan
DOI： 10.14863/geosocabst.2016.0_093 　

ISSN： 1348-3935

eISSN： 2187-6665
Investigation on the Postseismic Deformation Associated with the 2011 Tohoku Earthquake Based on Terrestrial and Seafloor Geodetic Observations: To Evaluate the Further Seismic Hazard Potential on the Plate Interface Beneath the Northeastern Japanese Islands Peer-reviewed

Takeshi Iinuma, Ryota Hino, Motoyuki Kido, Yukihito Osada, Daisuke Inazu, Yoshihiro Ito, Syuichi Suzuki, Yusaku Ohta, Hiromi Fujimoto

IAG 150 YEARS　143　459-466　2016

DOI： 10.1007/1345_2015_162 　

ISSN： 0939-9585
Rapid coseismic fault determination of consecutive large interplate earthquakes: The 2011 tohoku-oki sequence Peer-reviewed

Yusaku Ohta, Tatsuya Kobayashi, Ryota Hino, Tomotsugu Demachi, Satoshi Miura

International Association of Geodesy Symposia　41　467-475　2016
Publisher: Springer Verlag
DOI： 10.1007/1345_2015_109 　

ISSN： 0939-9585
Periodic slow slip triggers megathrust zone earthquakes in northeastern Japan Peer-reviewed

Naoki Uchida, Takeshi Iinuma, Robert M. Nadeau, Roland Buergmann, Ryota Hino

SCIENCE　351　(6272)　488-492　2016/01

DOI： 10.1126/science.aad3108 　

ISSN： 0036-8075

eISSN： 1095-9203
Complicated rupture process of the M-w 7.0 intraslab strike-slip earthquake in the Tohoku region on 10 July 2011 revealed by near-field pressure records Peer-reviewed

Tatsuya Kubota, Ryota Hino, Daisuke Inazu, Yoshihiro Ito, Takeshi Iinuma

GEOPHYSICAL RESEARCH LETTERS　42　(22)　9733-9739　2015/11

DOI： 10.1002/2015GL066101 　

ISSN： 0094-8276

eISSN： 1944-8007
First measurement of the displacement rate of the Pacific Plate near the Japan Trench after the 2011 Tohoku-Oki earthquake using GPS/acoustic technique Peer-reviewed

Fumiaki Tomita, Motoyuki Kido, Yukihito Osada, Ryota Hino, Yusaku Ohta, Takeshi Iinuma

GEOPHYSICAL RESEARCH LETTERS　42　(20)　8391-8397　2015/10

DOI： 10.1002/2015GL065746 　

ISSN： 0094-8276

eISSN： 1944-8007
GPS/Acoustic Measurement Using a Multi-purpose Moored Buoy System Peer-reviewed

Imano M, M. Kido, Y. Ohta, T. Fukuda, H. Ochi, N. Takahashi, R. Hino

International Association of Geodesy Symposia　2015/08

DOI： 10.1007/1345_2015_192, 　
Achievement of the Project for Advanced GPS/Acoustic Survey in the Last Four Years Peer-reviewed

Kido M, H. Fujimoto, R. Hino, Y. Ohta, Y. Osada, T. Iinuma, R. Azuma, I. Wada, S. Miura, S. Suzuki, F. Tomita, M. Imano

International Association of Geodesy Symposia　2015/03

DOI： 10.1007/1345_2015_127 　
Changes in seismicity before and after the 2011 Tohoku earthquake around its southern limit revealed by dense ocean bottom seismic array data Peer-reviewed

Yukihiro Nakatani, Kimihiro Mochizuki, Masanao Shinohara, Tomoaki Yamada, Ryota Hino, Yoshihiro Ito, Yoshio Murai, Toshinori Sato

GEOPHYSICAL RESEARCH LETTERS　42　(5)　1384-1389　2015/03

DOI： 10.1002/2015GL063140 　

ISSN： 0094-8276

eISSN： 1944-8007
Episodic tremor and slip near the Japan Trench prior to the 2011 Tohoku-Oki earthquake Peer-reviewed

Yoshihiro Ito, Ryota Hino, Syuichi Suzuki, Yoshiyuki Kaneda

GEOPHYSICAL RESEARCH LETTERS　42　(6)　1725-1731　2015/03

DOI： 10.1002/2014GL062986 　

ISSN： 0094-8276

eISSN： 1944-8007
Real-time tsunami inundation forecasting and damage estimation method by fusion of real-time crustal deformation monitoring and high-performance computing Peer-reviewed

S. Koshimura, R. Hino, Y. Ohta, H. Kobayashi, A. Musa, Y. Murashima

the 26th International Union of Geodesy and Geophysics　2015
Progress in the Project for Development of GPS/Acoustic Technique Over the Last 4 Years Peer-reviewed

Kido, M, H. Fujimoto, R. Hino, Y. Ohta, Y. Osada, T. Iinuma, R. Azuma, I. Wada, S. Miura, S. Suzuki, F. Tomita, M. Imano

International Association of Geodesy Symposia　41　2015
Q(P) structure of the accretionary wedge in the Kumano Basin, Nankai Trough, Japan, revealed by long-offset walk-away VSP Invited Peer-reviewed

Ryota Hino, Takeshi Tsuji, Nathan L. Bangs, Yoshinori Sanada, Jin-Oh Park, Roland von Huene, Gregory F. Moore, Eiichiro Araki, Masataka Kinoshita

EARTH PLANETS AND SPACE　67　(7)　2015/01

DOI： 10.1186/s40623-014-0175-x 　

ISSN： 1880-5981
Accidental sediments trapped in ocean bottom seismometers during the 2011 Tohoku-Oki earthquake Peer-reviewed

Ryo Miura, Ryota Hino, Kiichiro Kawamura, Toshiya Kanamatsu, Yuka Kaiho

ISLAND ARC　23　(4)　365-367　2014/12

DOI： 10.1111/iar.12079 　

ISSN： 1038-4871

eISSN： 1440-1738
A trial estimation of frictional properties, focusing on aperiodicity off Kamaishi just after the 2011 Tohoku earthquake Peer-reviewed

Keisuke Ariyoshi, Naoki Uchida, Toru Matsuzawa, Ryota Hino, Akira Hasegawa, Takane Hori, Yoshiyuki Kaneda

GEOPHYSICAL RESEARCH LETTERS　41　(23)　8325-8334　2014/12

DOI： 10.1002/2014GL061872 　

ISSN： 0094-8276

eISSN： 1944-8007
Development of visualization tool for real-time GNSS time series Peer-reviewed

出町知嗣, 太田雄策, 三浦哲, 立花憲司, 佐藤俊也, 日野亮太

測地学会誌　60　(3)　99-104　2014/10
Publisher: The Geodetic Society of Japan
DOI： 10.11366/sokuchi.60.99 　

ISSN： 0038-0830

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We developed a visualization tool of real-time GNSS time-series for the real-time crustal deformation monitoring. The developed system can draw the real-time GNSS time-series based on the user requirement in Web browser. The user can change drawing range of the time-series by graphical user interface. The drawn time-series is update automatically based on the processed GNSS time-series. These features will be useful for the actual crustal deformation monitoring by the realtime GNSS processing.
Prevalence of viscoelastic relaxation after the 2011 Tohoku-oki earthquake Peer-reviewed

Tianhaozhe Sun, Kelin Wang, Takeshi Iinuma, Ryota Hino, Jiangheng He, Hiromi Fujimoto, Motoyuki Kido, Yukihito Osada, Satoshi Miura, Yusaku Ohta, Yan Hu

NATURE　514　(7520)　84-+　2014/10

DOI： 10.1038/nature13778 　

ISSN： 0028-0836

eISSN： 1476-4687
The detectability of shallow slow earthquakes by the Dense Oceanfloor Network system for Earthquakes and Tsunamis (DONET) in Tonankai district, Japan Peer-reviewed

Keisuke Ariyoshi, Ryoko Nakata, Toru Matsuzawa, Ryota Hino, Takane Hori, Akira Hasegawa, Yoshiyuki Kaneda

MARINE GEOPHYSICAL RESEARCH　35　(3)　295-310　2014/09

DOI： 10.1007/s11001-013-9192-6 　

ISSN： 0025-3235

eISSN： 1573-0581
Was the 2011 Tohoku-Oki earthquake preceded by aseismic preslip? Examination of seafloor vertical deformation data near the epicenter Peer-reviewed

R. Hino, D. Inazu, Y. Ohta, Y. Ito, S. Suzuki, T. Iinuma, Y. Osada, M. Kido, H. Fujimoto, Y. Kaneda

MARINE GEOPHYSICAL RESEARCH　35　(3)　181-190　2014/09

DOI： 10.1007/s11001-013-9208-2 　

ISSN： 0025-3235

eISSN： 1573-0581
Dispersion and nonlinear effects in the 2011 Tohoku-Oki earthquake tsunami Peer-reviewed

Tatsuhiko Saito, Daisuke Inazu, Takayuki Miyoshi, Ryota Hino

JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS　119　(8)　5160-5180　2014/08

DOI： 10.1002/2014JC009971 　

ISSN： 2169-9275

eISSN： 2169-9291
A trial derivation of seismic plate coupling by focusing on the activity of shallow slow earthquakes Peer-reviewed

Keisuke Ariyoshi, Toru Matsuzawa, Ryota Hino, Akira Hasegawa, Takane Hori, Ryoko Nakata, Yoshiyuki Kaneda

EARTH PLANETS AND SPACE　66　2014/06

DOI： 10.1186/1880-5981-66-55 　

ISSN： 1880-5981
海陸統合測地観測に基づく2011年東北地方太平洋沖地震に関する研究 Peer-reviewed

藤本博己, 日野亮太, 木戸元之, 伊藤喜宏, 太田雄策, 飯沼卓史, 長田幸仁, 稲津大祐, 鈴木秀市, 佐藤俊也, 立花憲司, 出町知嗣, 三浦哲

測地学会誌　60　(1)　1-22　2014/05
Publisher: The Geodetic Society of Japan
DOI： 10.11366/sokuchi.60.1 　

ISSN： 0038-0830

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The geodetic research group of Tohoku University has been carrying out geodetic observations on shore and off shore of Miyagi Prefecture where earthquakes around M7.5 repeatedly occurred at intervals of about 40 years. We have been measuring horizontal movements of seafloor geodetic stations since 2003, using GPS-Acoustic （GPSA） seafloor positioning systems. We have also been continuously observing vertical crustal movements since 2008 using free-fall/pop-up ocean bottom pressure recorders （OBPRs）. Owing to these geodetic observations that were made in the region above the rupture area of the 2011 M9.0 Tohoku-oki earthquake, we succeeded in detecting unexpectedly large coseismic crustal displacements that had never been measured with geodetic systems on the seafloor. We retrieved data from the OBPRs that had been deployed above the rupture area, and to continue monitoring gradual postseismic slips, we installed replacements for these OBPRs at the same observation sites. We presented a model for the coseismic slip distribution on the plate boundary, and it is widely referenced because it is a model that is constrained by the OBPR data as well as the GPSA and the terrestrial geodetic data. We have also developed a method of real-time kinematic analyses of the data from a GNSS array to estimate the approximate magnitude of large earthquakes within several minutes. We developed a procedure to reduce tidal and non-tidal oceanic components in OBPR data. The pressure data analyzed jointly with onshore strain data revealed that there was a slow slip event near the focal zone about one month before the main event. The observed pressure variations also contain information about the coseismic and postseismic crustal movements associated with the M7.3 earthquake that occurred on March 9 and was estimated to be the largest foreshock. These results are important for clarifying geophysical processes that preceded the giant earthquake.
tFISH/RAPiD: Rapid improvement of near-field tsunami forecasting based on offshore tsunami data by incorporating onshore GNSS data Peer-reviewed

Hiroaki Tsushima, Ryota Hino, Yusaku Ohta, Takeshi Iinuma, Satoshi Miura

GEOPHYSICAL RESEARCH LETTERS　41　(10)　3390-3397　2014/05

DOI： 10.1002/2014GL059863 　

ISSN： 0094-8276

eISSN： 1944-8007
Structural heterogeneities around the megathrust zone of the 2011 Tohoku earthquake from tomographic inversion of onshore and offshore seismic observations Peer-reviewed

Yojiro Yamamoto, Koichiro Obana, Shuichi Kodaira, Ryota Hino, Masanao Shinohara

JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH　119　(2)　1165-1180　2014/02

DOI： 10.1002/2013JB010582 　

ISSN： 2169-9313

eISSN： 2169-9356
Study of the 2011 off the pacific coast of Tohoku earthquake based on seafloor and terrestrial geodetic observation

Hiromi Fujimoto, Ryota Hino, Motoyuki Kido, Yoshihiro Ito, Yusaku Ohta, Takeshi Iinuma, Yukihito Osada, Daisuke Inazu, Syuichi Suzuki, Toshiya Sato, Kenji Tachibana, Tomotsugu Demachi, Satoshi Miura

Journal of the Geodetic Society of Japan　60　(1)　1-22　2014/01/01
Publisher: Geodetic Society of Japan
ISSN： 0038-0830
Real-time tsunami inundation forecasting and damage mapping towards enhancing tsunami disaster resilience Peer-reviewed

S. Koshimura, R. HIno, Y. Ohta, H. Kobayashi, A. Musa, Y.Murashima

American Geophysical Union Fall Meeting　2014
Low Coseismic Friction on the Tohoku-Oki Fault Determined from Temperature Measurements Peer-reviewed

P. M. Fulton, E. E. Brodsky, Y. Kano, J. Mori, F. Chester, T. Ishikawa, R. N. Harris, W. Lin, N. Eguchi, S. Toczko

SCIENCE　342　(6163)　1214-1217　2013/12

DOI： 10.1126/science.1243641 　

ISSN： 0036-8075

eISSN： 1095-9203
Low Coseismic Shear Stress on the Tohoku-Oki Megathrust Determined from Laboratory Experiments Peer-reviewed

Kohtaro Ujiie, Hanae Tanaka, Tsubasa Saito, Akito Tsutsumi, James J. Mori, Jun Kameda, Emily E. Brodsky, Frederick M. Chester, Nobuhisa Eguchi, Sean Toczko

SCIENCE　342　(6163)　1211-1214　2013/12

DOI： 10.1126/science.1243485 　

ISSN： 0036-8075

eISSN： 1095-9203
Velocity reduction in an offshore region after the 2011 Tohoku-Oki earthquake, revealed from ocean-bottom seismic records Peer-reviewed

Ito, Y, R. Hino

Proceedings of the 11th SEGJ International Symposium　523-526　2013/11
Ocean bottom pressure records of the 2011 Tohoku-Oki earthquake Peer-reviewed

Hino, R, Y. Ito, Y. Ohta, T. Iinuma, D. Inazu

Proceedings of the 11th SEGJ International Symposium　462-465　2013/11
Aftershocks near the updip end of the 2011 Tohoku-Oki earthquake Peer-reviewed

Koichiro Obana, Shuichi Kodaira, Masanao Shinohara, Ryota Hino, Kenji Uehira, Hajime Shiobara, Kazuo Nakahigashi, Tomoaki Yamada, Hiroko Sugioka, Aki Ito, Yasuyuki Nakamura, Seiichi Miura, Tetsuo No, Narumi Takahashi

EARTH AND PLANETARY SCIENCE LETTERS　382　111-116　2013/11

DOI： 10.1016/j.epsl.2013.09.007 　

ISSN： 0012-821X

eISSN： 1385-013X
Tsunami-generated turbidity current of the 2011 Tohoku-Oki earthquake Peer-reviewed

Kazuno Arai, Hajime Naruse, Ryo Miura, Kiichiro Kawamura, Ryota Hino, Yoshihiro Ito, Daisuke Inazu, Miwa Yokokawa, Norihiro Izumi, Masafumi Murayama, Takafumi Kasaya

GEOLOGY　41　(11)　1195-1198　2013/11

DOI： 10.1130/G34777.1 　

ISSN： 0091-7613

eISSN： 1943-2682
衛星通信を活用したリアルタイムGPS解析 −地上通信障害時に地殻変動を実時間で把握するために− Peer-reviewed

山本淳平, 長田幸仁, 太田雄策, 平原聡, 出町知嗣, 中山貴史, 立花憲司, 佐藤俊也, 木戸元之, 藤本博己, 日野亮太, 三浦哲, 内田雅之

測地学会誌　59　(4)　133-145　2013/10
Publisher: The Geodetic Society of Japan
DOI： 10.11366/sokuchi.59.133 　

ISSN： 0038-0830

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The redundant communication pathway and processing strategy for satellite navigation system such as GPS is extremely important for more reliable quasi real-time crustal deformation monitoring in case of huge interplate earthquake occurrence. We tested real-time kinematic GPS processing (RTK-GPS) via satellite-based mobile phone for redundant communication pathway for address the vulnerabilities of the infrastructure. We succeed to get the stable time series via satellite mobile phone network with almost zero-missing data for short and long baseline RTK-GPS. We also assessed stability, precision and accuracy of StarFire^TM global satellites based augmentation system for redundant processing strategy. In order to assess coordinate precision and accuracy, we compared 1Hz StarFire time series and post-processed precise point positioning (PPP) 1Hz time series by GIPSY-OASIS II processing software Ver. 6.1.2 with three different product types (ultrarapid, rapid, and final orbits). We also used different interval clock information (30 and 300 seconds) for the post-processed PPP processing. The standard deviation of real time StarFire time series is less than 30 mm (horizontal components) and 60 mm (vertical component) based on 1 month continuous processing. We also assessed noise spectrum of the estimated time series by StarFire and post-processed GIPSY PPP results. We found that the noise spectrum of StarFire time series is similar pattern with GIPSY-OASIS II processing result based on JPL rapid orbit products with 300 seconds interval clock information. Based on these stability and noise assessment, we suggest that the various communication pathways for RTK-GPS processing and various processing strategy such as global satellites based augmentation system with traditional RTK-GPS processing strategy is important for more reliable quasi real-time crustal deformation monitoring.
Episodic slow slip events in the Japan subduction zone before the 2011 Tohoku-Oki earthquake Peer-reviewed

Yoshihiro Ito, Ryota Hino, Motoyuki Kido, Hiromi Fujimoto, Yukihito Osada, Daisuke Inazu, Yusaku Ohta, Takeshi Iinuma, Mako Ohzono, Satoshi Miura, Masaaki Mishina, Kensuke Suzuki, Takeshi Tsuji, Juichiro Ashi

TECTONOPHYSICS　600　14-26　2013/07

DOI： 10.1016/j.tecto.2012.08.022 　

ISSN： 0040-1951

eISSN： 1879-3266
海底地震観測からわかった2011年東北地方太平洋沖地震の余震分布と応力変化

村井芳夫, 東龍介, 篠原雅尚, 町田祐弥, 山田知朗, 中東和夫, 真保敬, 望月公廣, 日野亮太, 伊藤喜宏, 佐通利典, 塩原肇, 植平賢司, 八木原寛, 尾鼻浩一郎, 高橋成実, 小平秀一, 平田賢治, 対馬弘晃, 岩崎貴哉

北海道大学地球物理学研究報告　(76)　147-158　2013/03/19
Publisher:
DOI： 10.14943/gbhu.76.147 　

ISSN： 0439-3503
Stress state in the largest displacement area of the 2011 Tohoku-Oki earthquake Peer-reviewed

Weiren Lin, Marianne Conin, J. Casey Moore, Frederick M. Chester, Yasuyuki Nakamura, James J. Mori, Louise Anderson, Emily E. Brodsky, Nobuhisa Eguchi, Becky Cook, Tamara Jeppson, Monica Wolfson-Schwehr, Yoshinori Sanada, Saneatsu Saito, Yukari Kido, Takehiro Hirose, Jan H. Behrmann, Matt Ikari, Kohtaro Ujiie, Christie Rowe, James Kirkpatrick, Santanu Bose, Christine Regalla, Francesca Remitti, Virginia Toy, Patrick Fulton, Toshiaki Mishima, Tao Yang, Tianhaozhe Sun, Tsuyoshi Ishikawa, James Sample, Ken Takai, Jun Kameda, Sean Toczko, Lena Maeda, Shuichi Kodaira, Ryota Hino, Demian Saffer

Science　339　(6120)　687-690　2013/02/08

DOI： 10.1126/science.1229379 　

ISSN： 0036-8075

eISSN： 1095-9203
Real time GPS processing utilizing satellite communications -Toward more reliable real-time crustal deformation monitoring under a situation of ground communication failure-

Jyunpei Yamamoto, Yukihito Osada, Yusaku Ohta, Satoshi Hirahara, Tomotsugu Demachi, Takashi Nakayama, Kenji Tachibana, Toshiya Sato, Motoyuki Kido, Hiromi Fujimoto, Ryota Hino, Satoshi Miura, Masayuki Uchida

Journal of the Geodetic Society of Japan　59　(4)　133-145　2013
Publisher: Geodetic Society of Japan
ISSN： 0038-0830
Long offset walkaway and circle VSP in Nankai trough seismogenic zone

Y. Sanada, R. Hino, M. Kinoshita, J. O. Park, E. Araki, G. Moore, N. Bangs, R. Von Huene, T. Tsuji, S. Kodaira

Borehole Geophysics Workshop II - 3D VSP: Benefits, Challenges and Potential　2013
Aftershock distribution of the 2011 off the Pacific coast of Tohoku earthquake and stress regime changes revealed by ocean bottom seismographic observation

Yoshio Murai, Ryosuke Azuma, Masanao Shmohara, Yuya Machida, Tomoaki Yamada, Kazuo Nakahigashi, Takashi Shinbo, Kimihiro Mochizuki, Ryota Hino, Yoshihiro Ito, Toshinori Sato, Hajime Shiobara, Kenji Uehira, Hiroshi Yakiwara, Koichiro Obana, Narumi Takahashi, Shuichi Kodaira, Kenji Hirata, Hiroaki Tsushima, Takaya Iwasaki

Journal of the Hokkaido University, Faculty of Science, Series VII: Geophysics　(76)　147-158　2013

ISSN： 0441-067X
Application of vector-type super computer to understanding giant earthquakes and aftershocks on subduction plate boundaries Peer-reviewed

Keisuke Ariyoshi, Toru Matsuzawa, Yasuo Yabe, Naoyuki Kato, Ryota Hino, Akira Hasegawa, Yoshiyuki Kaneda

Sustained Simulation Performance 2012 - Proceedings of the Joint Workshop on High Performance Computing on Vector Systems, and Workshop on Sustained Simulation Performance　67-80　2013

DOI： 10.1007/978-3-642-32454-3-6 　
Along-trench structural variation and seismic coupling in the northern Japan subduction zone Peer-reviewed

Gou Fujie, Seiichi Miura, Shuichi Kodaira, Yoshiyuki Kaneda, Masanao Shinohara, Kimihiro Mochizuki, Toshihiko Kanazawa, Yoshio Murai, Ryota Hino, Toshinori Sato, Kenji Uehira

Earth, Planets and Space　65　(2)　75-83　2013
Publisher: Springer Berlin
DOI： 10.5047/eps.2012.06.003 　

ISSN： 1880-5981 1343-8832

eISSN： 1880-5981
Geodetic constraints on afterslip characteristics following the March 9, 2011, Sanriku-oki earthquake, Japan Peer-reviewed

Yusaku Ohta, Ryota Hino, Daisuke Inazu, Mako Ohzono, Yoshihiro Ito, Masaaki Mishina, Takeshi Iinuma, Junichi Nakajima, Yukihito Osada, Kensuke Suzuki, Hiromi Fujimoto, Kenji Tachibana, Tomotsugu Demachi, Satoshi Miura

GEOPHYSICAL RESEARCH LETTERS　39　2012/08

DOI： 10.1029/2012GL052430 　

ISSN： 0094-8276

eISSN： 1944-8007
Seismic structure of the source region of the 2007 Chuetsu-oki earthquake revealed by offshore-onshore seismic survey: Asperity zone of intraplate earthquake delimited by crustal inhomogeneity Peer-reviewed

Kazuo Nakahigashi, Masanao Shinohara, Eiji Kurashimo, Tomoaki Yamada, Aitaro Kato, Tetsuo Takanami, Kenji Uehira, Yoshihiro Ito, Takashi Iidaka, Toshihiro Igarashi, Hiroshi Sato, Ryota Hino, Koichiro Obana, Yoshiyuki Kaneda, Naoshi Hirata, Takaya Iwasaki, Toshihiko Kanazawa

TECTONOPHYSICS　562　34-47　2012/08

DOI： 10.1016/j.tecto.2012.06.052 　

ISSN： 0040-1951

eISSN： 1879-3266
Coseismic slip distribution of the 2011 off the Pacific Coast of Tohoku Earthquake (M9.0) refined by means of seafloor geodetic data Peer-reviewed

T. Iinuma, R. Hino, M. Kido, D. Inazu, Y. Osada, Y. Ito, M. Ohzono, H. Tsushima, S. Suzuki, H. Fujimoto, S. Miura

JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH　117　2012/07

DOI： 10.1029/2012JB009186 　

ISSN： 2169-9313

eISSN： 2169-9356
A global barotropic ocean model driven by synoptic atmospheric disturbances for detecting seafloor vertical displacements from in situ ocean bottom pressure measurements Peer-reviewed

Daisuke Inazu, Ryota Hino, Hiromi Fujimoto

MARINE GEOPHYSICAL RESEARCH　33　(2)　127-148　2012/06

DOI： 10.1007/s11001-012-9151-7 　

ISSN： 0025-3235
隣接観測点の情報を用いたRTK-GPSによる地震時永久変位自動検知アルゴリズムの改良 Peer-reviewed

小林竜也, 太田雄策, 三浦哲, 日野亮太, 藤本博己, 出町知嗣, 立花憲司

測地学会誌　58　(2)　77-87　2012/04
Publisher: The Geodetic Society of Japan
DOI： 10.11366/sokuchi.58.77 　

ISSN： 0038-0830

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We assessed the performance of a permanent displacement detection algorithm, which was developed by the authors at previous study, by using long-term Real Time Kinematic-GPS（RTK-GPS）data processing. False detection of permanent displacement should be avoided for a reliable warning system. We examined the detection rate using RTK-GPS time series with various baselines and different reference sites for a long time period. The false detection rate was ∼0.25% with a 4 sigma confidence level for a single baseline. This false detection rate is inadequate for practical use in a large GPS network consisting of many stations, such as GEONET. We improved the permanent displacement detection algorithm to mitigate the false detection rate. In the improved algorithm, an earthquake occurrence is defined as when the target GPS site and all its neighboring GPS sites detect a displacement. We applied the improved algorithm to an actual data set. With our improved algorithm, the false detection rate decreases to less than 0.002%. When we can use several reference sites for the RTK-GPS data processing and compare results for each reference site, the false detection rate will become almost zero. The improved algorithm is also useful for the detection of small displacements, because it may be possible to lower a threshold value from 4 to 2 sigma while keeping the false detection level to acceptable limit.
Tsunami waveform inversion incorporating permanent seafloor deformation and its application to tsunami forecasting Peer-reviewed

Hiroaki Tsushima, Ryota Hino, Yuichiro Tanioka, Fumihiko Imamura, Hiromi Fujimoto

JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH　117　2012/03

DOI： 10.1029/2011JB008877 　

ISSN： 2169-9313

eISSN： 2169-9356
Quasi real-time fault model estimation for near-field tsunami forecasting based on RTK-GPS analysis: Application to the 2011 Tohoku-Oki earthquake (M-w 9.0) Peer-reviewed

Yusaku Ohta, Tatsuya Kobayashi, Hiroaki Tsushima, Satoshi Miura, Ryota Hino, Tomoji Takasu, Hiromi Fujimoto, Takeshi Iinuma, Kenji Tachibana, Tomotsugu Demachi, Toshiya Sato, Mako Ohzono, Norihito Umino

JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH　117　2012/02

DOI： 10.1029/2011JB008750 　

ISSN： 2169-9313

eISSN： 2169-9356
P-wave velocity structure in the southernmost source region of the 2011 Tohoku earthquakes, off the Boso Peninsula, deduced by an ocean bottom seismographic survey Peer-reviewed

Kazuo Nakahigashi, Masanao Shinohara, Kimihiro Mochizuki, Tomoaki Yamada, Ryota Hino, Toshinori Sato, Kenji Uehira, Yoshihiro Ito, Yoshio Murai, Toshihiko Kanazawa

EARTH PLANETS AND SPACE　64　(12)　1149-1156　2012

DOI： 10.5047/eps.2012.06.006 　

ISSN： 1343-8832

eISSN： 1880-5981
Seismicity near the hypocenter of the 2011 off the Pacific coast of Tohoku earthquake deduced by using ocean bottom seismographic data Peer-reviewed

Kensuke Suzuki, Ryota Hino, Yoshihiro Ito, Yojiro Yamamoto, Syuichi Suzuki, Hiromi Fujimoto, Masanao Shinohara, Masao Abe, Yoshiharu Kawaharada, Yohei Hasegawa, Yoshiyuki Kaneda

EARTH PLANETS AND SPACE　64　(12)　1125-1135　2012

DOI： 10.5047/eps.2012.04.010 　

ISSN： 1880-5981
Migration process of very low-frequency events based on a chain-reaction model and its application to the detection of preseismic slip for megathrust earthquakes Peer-reviewed

Keisuke Ariyoshi, Toru Matsuzawa, Jean-Paul Ampuero, Ryoko Nakata, Takane Hori, Yoshiyuki Kaneda, Ryota Hino, Akira Hasegawa

EARTH PLANETS AND SPACE　64　(8)　693-702　2012

DOI： 10.5047/eps.2010.09.003 　

ISSN： 1880-5981
Autororrelation analysis of ambient noise in northeastern Japan subduction zone Peer-reviewed

Ito, Y, K. Shiomi, J. Nakajima, R. Hino

Tectonophysics　572-573　38-46　2012

DOI： 10.1016/j.tecto.2011.09.019 　
Precise aftershock distribution of the 2011 off the Pacific coast of Tohoku Earthquake revealed by an ocean-bottom seismometer network Peer-reviewed

Masanao Shinohara, Yuya Machida, Tomoaki Yamada, Kazuo Nakahigashi, Takashi Shinbo, Kimihiro Mochizuki, Yoshio Murai, Ryota Hino, Yoshihiro Ito, Toshinori Sato, Hajime Shiobara, Kenji Uehira, Hiroshi Yakiwara, Koichiro Obana, Narumi Takahashi, Shuichi Kodaira, Kenji Hirata, Hiroaki Tsushima, Takaya Iwasaki

EARTH PLANETS AND SPACE　64　(12)　1137-1148　2012

DOI： 10.5047/eps.2012.09.003 　

ISSN： 1343-8832
Trench-normal variation in observed seafloor displacements associated with the 2011 Tohoku-Oki earthquake Peer-reviewed

M. Kido, Y. Osada, H. Fujimoto, R. Hino, Y. Ito

GEOPHYSICAL RESEARCH LETTERS　38　2011/12

DOI： 10.1029/2011GL050057 　

ISSN： 0094-8276
Tsunami source of the 2011 Tohoku-Oki earthquake, Japan: Inversion analysis based on dispersive tsunami simulations Invited Peer-reviewed

Tatsuhiko Saito, Yoshihiro Ito, Daisuke Inazu, Ryota Hino

GEOPHYSICAL RESEARCH LETTERS　38　2011/11

DOI： 10.1029/2011GL049089 　

ISSN： 0094-8276

eISSN： 1944-8007
Hypocenter distribution of foreshokcs, mainshock and aftershock of the 2011 off the Pacific coast of Tohoku earthquake deduced by ocean bottom observation Invited

Ryota Hino, Kensuke, Suzuki, Yoshihiro Ito, Yoshiyuki Kaneda

Kagaku　81　(10)　1036-1043　2011/10
Publisher:
ISSN： 0022-7625
Mantle wedge structure in the Miyagi Prefecture forearc region, central northeastern Japan arc, and its relation to corner-flow pattern and interplate coupling Peer-reviewed

Yojiro Yamamoto, Ryota Hino, Masanao Shinohara

JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH　116　2011/10

DOI： 10.1029/2011JB008470 　

ISSN： 2169-9313

eISSN： 2169-9356
In situ stress state from walkaround VSP anisotropy in the Kumano basin southeast of the Kii Peninsula, Japan Peer-reviewed

Takeshi Tsuji, Ryota Hino, Yoshinori Sanada, Kiyohiko Yamamoto, Jin-Oh Park, Tetsuo No, Eiichiro Araki, Nathan Bangs, Roland von Huene, Gregory Moore, Masataka Kinoshita

GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS　12　2011/09

DOI： 10.1029/2011GC003583 　

ISSN： 1525-2027

eISSN： 1525-2027
Frontal wedge deformation near the source region of the 2011 Tohoku-Oki earthquake Peer-reviewed

Yoshihiro Ito, Takeshi Tsuji, Yukihito Osada, Motoyuki Kido, Daisuke Inazu, Yutaka Hayashi, Hiroaki Tsushima, Ryota Hino, Hiromi Fujimoto

GEOPHYSICAL RESEARCH LETTERS　38　2011/08

DOI： 10.1029/2011GL048355 　

ISSN： 0094-8276

eISSN： 1944-8007
Effects of small asperities on migration of slow-earthquakes along trench direction of subduction plate boundary: Investigation through a 3D numerical simulation Peer-reviewed

Keisuke Ariyoshi, Takane Hori, Yoshiyuki Kaneda, Jean-Paul Ampuero, Toru Matsuzawa, Ryota Hino, Akira Hasegawa

Advances in Geosciences: Volume 26: Solid Earth (SE)　47-54　2011/01/01
Publisher: World Scientific Publishing Co.
DOI： 10.1142/9789814355391_0005 　
Long-term stability and noise level of ocean bottom pressure measurements by deep-sea cabled observatories around Japan Peer-reviewed

D. Inazu, R. Hino

2011 IEEE Symposium on Underwater Technology, UT'11 and Workshop on Scientific Use of Submarine Cables and Related Technologies, SSC'11　2011

DOI： 10.1109/UT.2011.5774111 　
Consideration on the 2011 off the Pacific Coast of Tohoku Earthquake and the 2004 Sumatra Earthquake Peer-reviewed

Ariyoshi Keisuke, Matsuzawa Toru, Yabe Yasuo, Kato Naoyuki, Hino Ryota, Hasegawa Akira, Kaneda Yoshiyuki

JAMSTEC Report of Research and Development　13　(13)　17-33　2011
Publisher: Japan Agency for Marine-Earth Science and Technology
DOI： 10.5918/jamstecr.13.17 　

ISSN： 1880-1153

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  We review previous numerical simulations of interaction between fault segments on a plate interface based on a friction law, comparing combined events with single events on the amount of coseismic and preseismic slip. We find out the characteristics of combined event: (i) In case of multiple fault segments nearby enough to have short delay time of rupturing, coseismic slip is increased nearly in proportion to the size of combined fault segment while preseismic slip is almost the same as single event. (ii) In case of those distant enough to have long delay time of rupturing, seismic moment magnitude is almost the same as single event while preseismic slip is significantly increased by several tens percents. We discuss several combined earthquakes in Sumatra with short-term and long-term delay times and the possibility of megathrust earthquakes following the 2011 off the Pacific Coast of Tohoku Earthquake occurring off Kanto and off Sanriku with long-term delay time in the near future. We point out that seafloor observation of crustal deformation and seismicity off Kanto, Sanriku and Tokachi is necessary to enhance the detection ability of preseismic changes.
Intensive observations using pop-up type ocean bottom seismometers in the first decade of the 21st century Peer-reviewed

T. Yamada, M. Shinohara, K. Nakahigashi, K. Mochizuki, T. Kanazawa, K. Uehira, R. Hino, T. Takanami

2011 IEEE Symposium on Underwater Technology, UT'11 and Workshop on Scientific Use of Submarine Cables and Related Technologies, SSC'11　2011

DOI： 10.1109/UT.2011.5774132 　
Focal Mechanisms of Small Earthquakes within the Pacific Plate near the Japan Trench Peer-reviewed

Shoko Koga, Yoshihiro Ito, Ryota Hino

Zisin　64　(2)　75-90　2011

DOI： 10.4294/zisin.64.75 　
Aftershock observation of the 2011 off the Pacific coast of Tohoku Earthquake by using ocean bottom seismometer network Peer-reviewed

Masanao Shinohara, Tomoaki Yamada, Kazuo Nakahigashi, Shin'ichi Sakai, Kimihiro Mochizuki, Kenji Uehira, Yoshihiro Ito, Ryusuke Azuma, Yuka Kaiho, Tetsuo No, Hajime Shiobara, Ryota Hino, Yoshio Murai, Hiroshi Yakiwara, Toshinori Sato, Yuya Machida, Takashi Shinbo, Takehi Isse, Hiroki Miyamachi, Koichiro Obana, Narumi Takahashi, Shuichi Kodaira, Yoshiyuki Kaneda, Kenji Hirata, Sumio Yoshikawa, Kazushige Obara, Takaya Iwasaki, Naoshi Hirata

EARTH PLANETS AND SPACE　63　(7)　835-840　2011

DOI： 10.5047/eps.2011.05.020 　

ISSN： 1343-8832
Spatial distribution of earthquakes off the east coast of the Kanto region along the Japan Trench deduced from ocean bottom seismographic observations and their relations with the aftershock sequence of the 2011 off the Pacific coast of Tohoku Earthquake Peer-reviewed

Tomoaki Yamada, Kazuo Nakahigashi, Asako Kuwano, Kimihiro Mochizuki, Shin'ichi Sakai, Masanao Shinohara, Ryota Hino, Yoshio Murai, Tetsuo Takanami, Toshihiko Kanazawa

EARTH PLANETS AND SPACE　63　(7)　841-845　2011

DOI： 10.5047/eps.2011.06.045 　

ISSN： 1343-8832
Near-field tsunami forecasting using offshore tsunami data from the 2011 off the Pacific coast of Tohoku Earthquake Peer-reviewed

Hiroaki Tsushima, Kenji Hirata, Yutaka Hayashi, Yuichiro Tanioka, Kazuhiro Kimura, Shin'ichi Sakai, Masanao Shinohara, Toshihiko Kanazawa, Ryota Hino, Kenji Maeda

EARTH PLANETS AND SPACE　63　(7)　821-826　2011

DOI： 10.5047/eps.2011.06.052 　

ISSN： 1343-8832
Temperature correction and usefulness of ocean bottom pressure data from cabled seafloor observatories around Japan for analyses of tsunamis, ocean tides, and low-frequency geophysical phenomena Peer-reviewed

Daisuke Inazu, Ryota Hino

EARTH PLANETS AND SPACE　63　(11)　1133-1149　2011

DOI： 10.5047/eps.2011.07.014 　

ISSN： 1880-5981
前震・本震・余震の分布 Invited

日野亮太, 鈴木健介, 伊藤喜宏, 金田義行

岩波科学　2011
Supraslab earthquake clusters above the subduction plate boundary offshore Sanriku, northeastern Japan: Seismogenesis in a graveyard of detached seamounts? Peer-reviewed

Naoki Uchida, Stephen H. Kirby, Tomomi Okada, Ryota Hino, Akira Hasegawa

JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH　115　2010/09

DOI： 10.1029/2009JB006797 　

ISSN： 2169-9313

eISSN： 2169-9356
地殻の構造と活動から見えた南海トラフ地震発生帯の姿 Invited

小平秀一, 小原一成, 篠原雅尚, 日野亮太

科学　80　(8)　30-34　2010/08
Influence of interaction between small asperities on various types of slow earthquakes in a 3-D simulation for a subduction plate boundary Peer-reviewed

Keisuke Ariyoshi, Takane Hori, Jean-Paul Ampuero, Yoshiyuki Kaneda, Toru Matsuzawa, Ryota Hino, Akira Hasegawa

GONDWANA RESEARCH　16　(3-4)　534-544　2009/12

DOI： 10.1016/j.gr.2009.03.006 　

ISSN： 1342-937X
Character of slip and stress due to interaction between fault segments along the dip direction of a subduction zone Peer-reviewed

Keisuke Ariyoshi, Toru Matsuzawa, Yasuo Yabe, Naoyuki Kato, Ryota Hino, Akira Hasegawa, Yoshiyuki Kaneda

JOURNAL OF GEODYNAMICS　48　(2)　55-67　2009/08

DOI： 10.1016/j.jog.2009.06.001 　

ISSN： 0264-3707
Insight into complex rupturing of the immature bending normal fault in the outer slope of the Japan Trench from aftershocks of the 2005 Sanriku earthquake (M-w=7.0) located by ocean bottom seismometry Peer-reviewed

Ryota Hino, Ryosuke Azuma, Yoshihiro Ito, Yojiro Yamamoto, Kensuke Suzuki, Hiroaki Tsushima, Syuichi Suzuki, Makoto Miyashita, Toshihiro Tomori, Mitsuharu Arizono, Go Tange

GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS　10　(7)　2009/07

DOI： 10.1029/2009GC002415 　

ISSN： 1525-2027

eISSN： 1525-2027
Near-field tsunami forecasting from cabled ocean bottom pressure data Peer-reviewed

Hiroaki Tsushima, Ryota Hino, Hiromi Fujimoto, Yuichiro Tanioka, Fumihiko Imamura

JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH　114　(B06309)　2009/06

DOI： 10.1029/2008JB005988 　

ISSN： 2169-9313

eISSN： 2169-9356
Heterogeneous structure around the rupture area of the 2003 Tokachi-oki earthquake (Mw=8.0), Japan, as revealed by aftershock observations using Ocean Bottom Seismometers Peer-reviewed

Yuya Machida, Masanao Shinohara, Tetsuo Takanami, Yoshio Murai, Tomoaki Yamada, Naoshi Hirata, Kiyoshi Suyehiro, Toshihiko Kanazawa, Yoshiyuki Kaneda, Hitoshi Mikada, Shin'ichi Sakai, Tomoki Watanabe, Kenji Uehira, Narumi Takahashi, Minoru Nishino, Kimihiro Mochizuki, Takeshi Sato, Ei'ichiro Araki, Ryota Hino, Kouichi Uhira, Hajime Shiobara, Hiroshi Shimizu

TECTONOPHYSICS　465　(1-4)　164-176　2009/02

DOI： 10.1016/j.tecto.2008.11.009 　

ISSN： 0040-1951

eISSN： 1879-3266
ジオハザードの科学的な理解－人類の脅威となる巨大地震の探査に向けて－ Invited

山田泰広, 日野亮太, 小林励司, 宍倉正展, 川村喜一郎, 坂口有人

月刊地球　32　(2)　77-85　2009
Continuous long-term seafloor puressure observation for detecting slow-slip interplate events in Miyagi-Oki on the landward Japan Trench slope Invited Peer-reviewed

Hino, R., R. I. Ii, T. Iinuma, H. Fujimoto

Journal of Disaster Research　4　(2)　72-82　2009
Spatial heterogeneity of the mantle wedge structure and interplate coupling in the NE Japan forearc region Peer-reviewed

Yojiro Yamamoto, Ryota Hino, Kensuke Suzuki, Yoshihiro Ito, Tomoaki Yamada, Masanao Shinohara, Toshihiko Kanazawa, Gen Aoki, Masayuki Tanaka, Kenji Uehira, Gou Fujie, Yoshiyuki Kaneda, Tetsuo Takanami, Toshinori Sato

GEOPHYSICAL RESEARCH LETTERS　35　(23)　2008/12

DOI： 10.1029/2008GL036100 　

ISSN： 0094-8276

eISSN： 1944-8007
Three-dimensional P- and S-wave velocity structures beneath Japan Peer-reviewed

Masaki Nakamura, Yasuhiro Yoshida, Dapeng Zhao, Hiroyuki Takayama, Koichiro Obana, Hiroshi Katao, Junzo Kasahara, Toshihiko Kanazawa, Shuichi Kodaira, Toshinori Sato, Hajime Shiobara, Masanao Shinohara, Hideki Shimamura, Narumi Takahashi, Ayako Nakanishi, Ryota Hino, Yoshio Murai, Kimihiro Mochizuki

PHYSICS OF THE EARTH AND PLANETARY INTERIORS　168　(1-2)　49-70　2008/05

DOI： 10.1016/j.pepi.2008.04.017 　

ISSN： 0031-9201

eISSN： 1872-7395
Seismic velocity structure around the Hyuganada region, Southwest Japan, derived from seismic tomography using land and OBS data and its implications for interplate coupling and vertical crustal uplift Peer-reviewed

M. Tahara, K. Uehira, H. Shimizu, M. Nakada, T. Yamada, K. Mochizuki, M. Shinohara, M. Nishino, R. Hino, H. Yakiwara, H. Miyamachi, K. Umakoshi, M. Goda, N. Matsuwo, T. Kanazawa

PHYSICS OF THE EARTH AND PLANETARY INTERIORS　167　(1-2)　19-33　2008/03

DOI： 10.1016/j.pepi.2008.02.001 　

ISSN： 0031-9201
Aftershock observation of the Noto Hanto earthquake in 2007 using ocean bottom seismometers Peer-reviewed

Tomoaki Yamada, Kimihiro Mochizuki, Masanao Shinohara, Toshihiko Kanazawa, Asako Kuwano, Kazuo Nakahigashi, Ryota Hino, Kenji Uehira, Takeo Yagi, Naoto Takeda, Shinichi Hashimoto

EARTH PLANETS AND SPACE　60　(10)　1005-1010　2008

DOI： 10.1186/BF03352860 　

ISSN： 1343-8832
Precise aftershock distribution of the 2007 Chuetsu-oki Earthquake obtained by using an ocean bottom seismometer network Peer-reviewed

Masanao Shinohara, Toshihiko Kanazawa, Tomoaki Yamada, Kazuo Nakahigashi, Shin'ichi Sakai, Ryota Hino, Yoshio Murai, Akira Yamazaki, Koichiro Obana, Yoshihiro Ito, Kazuhiro Iwakiri, Ryo Miura, Yuya Machida, Kimihiro Mochizuki, Kenji Uehira, Michitaka Tahara, Asako Kuwano, Shin'ichiro Amamiya, Shuichi Kodaira, Tetsuo Takanami, Yoshiyuki Kaneda, Takaya Iwasaki

EARTH PLANETS AND SPACE　60　(11)　1121-1126　2008

DOI： 10.1186/BF03353147 　

ISSN： 1880-5981
Application of cabled offshore ocean bottom tsunami gauge data for real-time tsunami forecasting Peer-reviewed

Hiroaki Tsushima, Ryota Hino, Hiromi Fujimoto, Yuichiro Tanioka

2007 SYMPOSIUM ON UNDERWATER TECHNOLOGY AND WORKSHOP ON SCIENTIFIC USE OF SUBMARINE CABLES AND RELATED TECHNOLOGIES, VOLS 1 AND 2　612-+　2007

DOI： 10.1109/UT.2007.370824 　
海底地震計観測による2005年8月16日に発生した宮城県沖の地震の余震分布（速報） Peer-reviewed

日野亮太, 鈴木健介, 山本揚二朗, 西野実, 金沢敏彦, 山田知朗, 中東和夫, 望月公廣, 桑野亜佐子, 青木元, 田中昌之, 荒木英一郎, 小平秀一, 藤江剛, 金田義行

地震2　59　(4)　297-308　2007
Publisher: SEISMOLOGICAL SOCIETY OF JAPAN
DOI： 10.4294/zisin.59.297 　

ISSN： 0037-1114

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Hypocenter distribution of the 2005 Miyagi-oki earthquake (M 7.2) and its aftershocks were relocated by using ocean bottom seismographic (OBS) data. The mainshock was observed by 14 OBSs which were deployed in the focal area about one month prior to the occurrence. Additional 16 OBSs were deployed for aftershock observations. Relocated hypocenters concentrate along a landward dipping plane whose location and dip angle correspond well to the plate boundary defined by a previous study. Although the most significant aftershock activity concentrates around the rupture area of the mainshock where substantial amount of coseismic slip was retrieved, two moderate (M 6.3) earthquakes with numerous aftershocks were observed in the trenchward region. The hypocenters of those earthquakes were also located along the plate boundary and the epicenter locations correspond to the aftershock area of the 1981 inter plate earthquake (M 7.0). Most of the aftershocks near the rupture area form a very thin plane and have focal mechanism solutions of a thrust fault type almost identical to that of the mainshock, suggesting these aftershocks occurred along the rupture plane of the mainshock, the plate boundary. There is a conspicuous linear cluster of the aftershocks at the eastern edge of the rupture area. The focal depth distribution of this cluster is slightly thicker than those of the aftershocks around the mainshock hypocenter. The cluster contains a number of events with focal mechanisms other than the thrust type. These observations suggest that a number of aftershocks occurred not only along but also off the plate interface at the up-dip end of the mainshock rupture. The b-value of the aftershocks in the linear cluster is significantly larger than that of the aftershocks near the mainshock hypocenter. This difference may reflect the difference in characteristic scales of structural heterogeneity along the plate interface and that within the plates.
Triggered non-similar slip events on repeating earthquake asperities: Results from 3D numerical simulations based on a friction law Peer-reviewed

Keisuke Ariyoshi, Toru Matsuzawa, Ryota Hino, Akira Hasegawa

GEOPHYSICAL RESEARCH LETTERS　34　(2)　2007/01

DOI： 10.1029/2006GL028323 　

ISSN： 0094-8276

eISSN： 1944-8007
海底地震計を用いた海底下深部構造探査―海溝型大地震発生域の地震波トモグラフィ― Invited

日野亮太

超音波TECNO　19　(2)　103-109　2007
Publisher:
ISSN： 0916-2410
Ocean bottom pressure observation off Sanriku and comparison with ocean tide models, altimetry, and barotropic signals from ocean models Peer-reviewed

K. Matsumoto, T. Sato, H. Fujimoto, Y. Tamura, M. Nishino, R. Hino, T. Higashi, T. Kanazawa

GEOPHYSICAL RESEARCH LETTERS　33　(16)　2006/08

DOI： 10.1029/2006GL026706 　

ISSN： 0094-8276
Three-dimensional seismic velocity structure around the focal area of the 1978 Miyagi-Oki earthquake Peer-reviewed

Yojiro Yamamoto, Ryota Hino, Minoru Nishino, Tomoaki Yamada, Toshihiko Kanazawa, Tetsuo Hashimoto, Gen Aoki

GEOPHYSICAL RESEARCH LETTERS　33　(10)　2006/05

DOI： 10.1029/2005GL025619 　

ISSN： 0094-8276

eISSN： 1944-8007
GPS音響結合方式の海底精密測位観測システムによる宮城県沖観測の開始 Peer-reviewed

舟越実, 長田幸仁, 三浦哲, 西野実, 桑野亜佐子, 日野亮太, 藤本博己

測地学会誌　52　(2)　115-130　2006/04
Publisher: The Geodetic Society of Japan
DOI： 10.11366/sokuchi1954.52.115 　

ISSN： 0038-0830

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A new observation system was developed for GPS/Acoustic seafloor positioning. The newly developed acoustic system for medium water depth (about 3, 000 m) simultaneously measures ranges from three precision acoustic transponders (PXPs) on the seafloor. Precise ranging is achieved with cross-correlation analysis between transmitted and received acoustic signals. Another important feature of the observation system is a 1.5 m square towed buoy used for the positioning. The buoy is fairly stable, and three GPS antennas on the buoy can measure the position and attitude of the buoy. The buoy towed from a survey vessel with a rope and cables of 100 m is efficient to reduce the underwater acoustic noises generated from the thrusters of the vessel. We deployed and located 3 PXPs off Miyagi Prefecture in August 2003, and carried out the positioning of the PXP array center twice in August 2004, each time for about one day. Although estimated observation error is large, the results obtained twice agree within 2 cm.
P-wave velocity structure of the margin of the southeastern Tsushima Basin in the Japan Sea using ocean bottom seismometers and airguns Peer-reviewed

T Sato, T Sato, M Shinohara, R Hino, M Nishino, T Kanazawa

TECTONOPHYSICS　412　(3-4)　159-171　2006/01

DOI： 10.1016/j.tecto.2005.09.001 　

ISSN： 0040-1951

eISSN： 1879-3266
Hypocenter distribution of the main- and aftershocks of the 2005 Off Miyagi Prefecture earthquake located by ocean bottom seismographic data Peer-reviewed

Ryota Hino, Yojiro Yamamoto, Asako Kuwano, Minoru Nishino, Toshihiko Kanazawa, Tomoaki Yamada, Kazuo Nakahigashi, Kimihiro Mochizuki, Masanao Shinohara, Kouetsu Minato, Gen Aoki, Nariaki Okawara, Masayuki Tanaka, Masao Abe, Eiichiro Araki, Shuichi Kodaira, Gou Fujie, Yoshiyuki Kaneda

EARTH PLANETS AND SPACE　58　(12)　1543-1548　2006

DOI： 10.1186/BF03352658 　

ISSN： 1343-8832
海底地震計を用いた海底下深部構造探査 Invited

日野亮太

日本音響学会誌　61　(11)　647-652　2005/11
Publisher: The Acoustical Society of Japan (ASJ)
DOI： 10.20697/jasj.61.11_647 　

ISSN： 0369-4232
Subduction of the Woodlark Basin at New Britain Trench, Solomon Islands region Peer-reviewed

S Yoneshima, K Mochizuki, E Araki, R Hino, M Shinohara, K Suyehiro

TECTONOPHYSICS　397　(3-4)　225-239　2005/03

DOI： 10.1016/j.tecto.2004.12.008 　

ISSN： 0040-1951
Bending of the subducting oceanic plate and its implication for rupture propagation of large interplate earthquakes off Miyagi, Japan, in the Japan Trench subduction zone Peer-reviewed

A Ito, G Fujie, S Miura, S Kodaira, Y Kaneda, R Hino

GEOPHYSICAL RESEARCH LETTERS　32　(5)　2005/03

DOI： 10.1029/2004GL022307 　

ISSN： 0094-8276
稠密海底地震観測による2003年十勝沖地震の余震分布 Invited Peer-reviewed

山田知朗, 篠原雅尚, 金沢敏彦, 平田直, 金田義行, 高波鐵夫, 三ケ田均, 末廣潔, 酒井慎一, 渡邊智毅, 植平賢司, 村井芳夫, 高橋成実, 西野実, 望月公廣, 佐藤壮, 荒木英一郎, 日野亮太, 宇平幸一, 塩原肇, 清水洋

Zisin　57　(3)　281-290　2005/02
Publisher: Seismological Society of Japan
DOI： 10.4294/zisin1948.57.3_281 　

ISSN： 0037-1114

eISSN： 2186-599X
Intense PP reflection beneath the aseismic forearc slope of the Japan Trench subduction zone and its implication of aseismic slip subduction Peer-reviewed

K Mochizuki, M Nakamura, J Kasahara, R Hino, M Nishino, A Kuwano, Y Nakamura, T Yamada, M Shinohara, T Sato, PP Moghaddam, T Kanazawa

JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH　110　(B1)　2005/01

DOI： 10.1029/2003JB002892 　

ISSN： 2169-9313

eISSN： 2169-9356
Hypocenter distribution of plate boundary zone off Fukushima, Japan, derived from ocean bottom seismometer data Peer-reviewed

M Shinohara, R Hino, T Yoshizawa, M Nishino, T Sato, K Suyehiro

EARTH PLANETS AND SPACE　57　(2)　93-105　2005

DOI： 10.1186/BF03352553 　

ISSN： 1343-8832
Seismic structure and seismogenesis off Sanriku region, northeastern Japan Peer-reviewed

N Takahashi, S Kodaira, T Tsuru, JO Park, Y Kaneda, K Suyehiro, H Kinoshita, S Abe, M Nishino, R Hino

GEOPHYSICAL JOURNAL INTERNATIONAL　159　(1)　129-145　2004/10

DOI： 10.1111/j.1365-246X.2004.02350.x 　

ISSN： 0956-540X

eISSN： 1365-246X
Characteristic seismic activity in the subducting plate boundary zone off Kamaishi, northeastern Japan, revealed by precise hypocenter distribution analysis using ocean-bottom seismometers Peer-reviewed

T Okada, K Sakoda, T Matsuzawa, R Hino, A Hasegawa, S Sakai, T Kanazawa

GEOPHYSICAL RESEARCH LETTERS　31　(19)　2004/10

DOI： 10.1029/2004GL020366 　

ISSN： 0094-8276

eISSN： 1944-8007
Rayleigh wave phase velocity measurements across the Philippine sea from a broad-band OBS array Peer-reviewed

T Isse, H Shiobara, Y Fukao, K Mochizuki, T Kanazawa, H Sugioka, S Kodaira, R Hino, D Suetsugu

GEOPHYSICAL JOURNAL INTERNATIONAL　158　(1)　257-266　2004/07

DOI： 10.1111/j.1365-246X.2004.02322.x 　

ISSN： 0956-540X
Research report of the crust and upper mantle structure in the Okinawa Trough, off west Kyushu by using ocean bottom seismometers

Kazou Nakahigashi, Masanao Shinohara, Sadaomi Suzuki, Hiroshi Takenaka, Nobuki Kame, Kenji Uehira, Hajime Shiobara, Toshihiko Kanazawa, Ryota Hino, Minoru Nishino, Minoru Nishino, Takeshi Sato, Takeshi Sato, Shinji Yoneshima, Shinji Yoneshima

Science Reports of the Kyushu University, Department of Earth and Planetary Sciences　21　(3)　69-107　2004/01/01

ISSN： 1348-0545
沖縄トラフにおける地殻・上部マントルの地震波速度構造調査

中東和夫, 篠原雅尚, 鈴木貞臣, 竹中博士, 亀伸樹, 植平賢司, 塩原肇, 金沢敏彦, 日野亮太, 西野実, 佐藤荘, 米島慎二

九州大学理学部研究報告(地球惑星科学)　21　(3)　69-107　2004
Seismic structure of the crust and uppermost mantle in the incipient stage of back arc rifting - northernmost Okinawa Trough Peer-reviewed

K Nakahigashi, M Shinohara, S Suzuki, R Hino, H Shiobara, H Takenaka, M Nishino, T Sato, S Yoneshima, T Kanazawa

GEOPHYSICAL RESEARCH LETTERS　31　(2)　2004/01

DOI： 10.1029/2003GL018928 　

ISSN： 0094-8276
Aftershock observation of the 2003 Tokachi-oki earthquake by using dense ocean bottom seismometer network Peer-reviewed

M Shinohara, T Yamada, T Kanazawa, N Hirata, Y Kaneda, T Takanami, H Mikada, K Suyehiro, S Sakai, T Watanabe, K Uehira, Y Murai, N Takahashi, M Nishino, K Mochizuki, T Sato, E Araki, R Hino, K Uhira, H Shiobara, H Shimizu

EARTH PLANETS AND SPACE　56　(3)　295-300　2004

DOI： 10.1186/BF03353054 　

ISSN： 1343-8832
Slip distribution of the 2003 Tokachi-oki earthquake estimated from tsunami waveform inversion Peer-reviewed

Y Tanioka, K Hirata, R Hino, T Kanazawa

EARTH PLANETS AND SPACE　56　(3)　373-376　2004

DOI： 10.1186/BF03353067 　

ISSN： 1343-8832
沈み込みたいの非アスペリティとそれを生じる物質 Peer-reviewed

笠原順三, 望月公廣, 上村彩, 中村美加子, 日野亮太, 山田知朗, 佐藤利典, ペイマン・プール・モグハダム, 西野実, 中村恭之, 金澤敏彦

地学雑誌　112　(6)　814-827　2003
Publisher: Tokyo Geographical Society
DOI： 10.5026/jgeography.112.6_814 　

ISSN： 0022-135X

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To study earthquake generation mechanisms, we carried out two seismic experiments in the Izu-Bonin Trench and the Japan Trench subduction zones using OBS and controlled sources in 1996 and 1998, respectively. In the Izu-Bonin subduction zone, we inferred the presence of serpentinized rocks along the top of the slab (Kamimura et al., 2002). Between 38-39° N along the Japan Trench forearc slope, we observed a good correlation between aseismicity and PP reflection phase from the top of the slab (the plate boundary) (Fujie et al., 2002). To confirm the results of the survey in the Izu-Bonin Trench subduction zone, we calculated synthetic waveforms from the velocity structure obtained by travel-time tomography and seismic attenuation (Q model). A comparison of observed and synthetic waveforms suggests the existence of a low Qp ( 10) layer beneath the Torishima serpentine seamount and extending from the seamount 80 km from the west of the seamount along the top of the slab. This modeling supports the presence of serpentinized peridotite at the top of the slab. We suggest that such a layer may allow an aseismic slip during subduction of the oceanic plate, primarily due to the low frictional coefficient of the crysotile (a phase of low temperature serpentine). In the Japan Trench subduction zone, we carried out a more extensive OBS-controlled source seismic experiment to confirm the results from 1996. We shot airguns along 7100 kmlong path that runs nearly parallel to the trench axis, and this paper presents the results from the western 5 lines. We observed very intense PP reflections from the top of the slab over the aseismic zone. By including a thin low velocity layer just above the slab, we obtained similar strong PP reflection phases in synthetic waveforms from the top of the slab. These observations and models suggest that a layer with a P velocity as low as 2-4 km/s and a thickness of 100-400 m is needed at the top of the slab to explain the observed PP reflection intensity. Such a layer can comprise aqueous fluid, clay, and/or serpentine-chlorite generated by hydration/dehydration of the subducting oceanic crust and the wedge mantle peridotite. The top of the slab at 18 a path of km exhibits stronger PP reflections than it does at 12 a depth of km depth, and it suggests upwelling of serpentinized and/or clay-rich material from the wedge mantle to the shallower plate boundary. In the Izu-Bonin Trench and the Japan Trench regions, we conclude the presence of low P wave velocity and low Q materials along the top of the slab. This result strongly suggests aseismic slip during the subduction of the Pacific Plate in the shallow part of the Izu-Bonin Trench subduction zone and in the aseismic zone between 38-39° N over the Japan Trench forearc slope.
Relation between seismic velocity structure of subducting oceanic crust and interplate micro-seismicity Peer-reviewed

Hino, R

Bulletine of Earthquake Research Institute　78　(1)　113-120　2003/01
Publisher:
ISSN： 0040-8972
Crustal structure study at the Izu-Bonin subduction zone around 31°N: Implications of serpentinized materials along the subduction plate boundary Peer-reviewed

Aya Kamimura, Junzo Kasahara, Masanao Shinohara, Ryota Hino, Hajime Shiobara, Gou Fujie, Toshihiko Kanazawa

Physics of the Earth and Planetary Interiors　132　(1-3)　105-129　2002/09/30

DOI： 10.1016/S0031-9201(02)00047-X 　

ISSN： 0031-9201
Crustal structure around the eastern end of coseismic rupture zone of the 1944 Tonankai earthquake Peer-reviewed

Ayako Nakanishi, Hajime Shiobara, Ryota Hino, Junzo Kasahara, Kiyoshi Suyehiro, Hideki Shimamura

Tectonophysics　354　(3-4)　257-275　2002/09/18

DOI： 10.1016/S0040-1951(02)00342-6 　

ISSN： 0040-1951
Heterogeneous structure across the source regions of the 1968 Tokachi-Oki and the 1994 Sanriku-Haruka-Oki earthquakes at the Japan Trench revealed by an ocean bottom seismic survey Peer-reviewed

T Hayakawa, J Kasahara, R Hino, T Sato, M Shinohara, A Kamimura, M Nishino, T Sato, T Kanazawa

PHYSICS OF THE EARTH AND PLANETARY INTERIORS　132　(1-3)　89-104　2002/09

DOI： 10.1016/S0031-9201(02)00046-8 　

ISSN： 0031-9201
Deep crustal structure of the eastern Nankai Trough and Zenisu Ridge by dense airgun-OBS seismic profiling Peer-reviewed

Ayako Nakanishi, Hajime Shiobara, Ryota Hino, Kimihiro Mochizuki, Toshinori Sato, Junzo Kasahara, Narumi Takahashi, Kiyoshi Suyehiro, Hidekazu Tokuyama, Jiro Segawa, Masanao Shinohara, Hideki Shimahura

Marine Geology　187　(1-2)　47-62　2002/07/20

DOI： 10.1016/S0025-3227(02)00244-X 　

ISSN： 0025-3227
Vertical crustal movement on the seafloor detected with differential pressure monitoring Peer-reviewed

T Tamaki, R Hino, H Fujimoto, T Yamada, T Kanazawa, H Murakami

PROCEEDINGS OF THE 2002 INTERNATIONAL SYMPOSIUM ON UNDERWATER TECHNOLOGY　317-319　2002
海底地震計を用いた九州背弧の地殻深部構造調査

中東和夫, 篠原雅尚, 鈴木貞臣, 塩原肇, 日野亮太, 竹中博士, 亀伸樹, 植平賢司, 西野実, 佐藤壮, 米島慎二, 藤本博巳, 金澤敏彦

京都大学防災研究所研究報告書「フィリピン海スラブの沈み込みと地球物理」　219-222　2002
A significant relation between seismic activities and reflection intensities in the Japan Trench region Peer-reviewed

Fujie, G, J. Kasahara, R. Hino, T. Sato, M. Shinohara, K. Suyehiro

Geophysical Research Letters　29　(7)　1100-1100　2002/01
Micro-tsunami from a local interplate earthquake detected by cabled offshore tsunami observation in Northeastern Japan Peer-reviewed

R. Hino, Y. Tanioka, T. Kanazawa, S. Sakai, M. Nishino, K. Suyehiro

Geophysical Research Letters　28　(18)　3533-3536　2001/09/15

DOI： 10.1029/2001GL013297 　

ISSN： 0094-8276
Tectonic Development in the regions around Japan since latest Miocene

TOKUYAMA Hidekazu, HONZA Eiichi, KIMURA Masaaki, KURAMOTO Shin-ichi, ASHI Juichiro, OKAMURA Nobuyuki, ARATO Hiroyuki, ITO Yasuto, SOH Wonn, HINO Ryota, NOHARA Tsuyoshi, ABE Hironobu, SAKAI Shin-ichi, MUKAIYAMA Kenjiro

Jour. Japan Soc. Mar. Surv. Tech.　13　(1)　27-53　2001/03/31
Publisher: Japan Society for Marine Surveys and Technology
DOI： 10.11306/jsmst.13.1_27 　

ISSN： 0915-2997

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We propose the guideline to identify fault in offshore region mainly based on MCS profiles, combining high resolution bathymetric maps and geological data such as bore hole results. Based on the guideline we distinguished total 776 faults developing around Japan since the latest Miocene and 753 faults out of total numbers of faults are interpreted to have been active by Quaternary. Together with distinguishment of fault we examined the attributes of each faults such as surface and vertical distribution, criteria of offset, age of movement, certainty of a fault and so on. The results of the distinguishment and examination of the fault leads to the conclusion that the ongoing tectonic framework around Japan characterized by 1) oblique Subduction along the Nankai Trough, 2) rifting at the Okinawa Trough, 3) E-W compressionl regeme along the Japan Sea margin, 4) E-W compressionl regeme along southwestern margin of the Okhotsk Sea and off southern Hokkaido, 5) E-W compressionl regeme along the Japan Trench, 6) rifting in the central arc of the Izu-Ogasawara Arc has been established since 3 Ma, at the earliest 6 Ma. We utilized high resolution data set which we enable to access. Tow big problems, however, still remain in terms of reliability of fault recognition. Those are 1) age of fault movement and 2) spatial distribution of fault. To solve the first one, new technique is required in order to obtain core samples which provide critical evidence to determine age of fault movement. As is second problem concerned, new intensive seismic survey is indispensable to make a precise fault distribution map, especially in the boundary area between land and sea.
海底地震計と制御震源を用いた北部大和海盆、秋田沖日本海東縁部海陸境界域の地震波速度構造 Peer-reviewed

西坂弘正, 篠原雅尚, 佐藤利典, 日野亮太, 望月公廣, 笠原順三

地震2　54　(3)　365-379　2001

DOI： 10.4294/zisin1948.54.3_365 　
Microearthquake seismicity and focal mechanisms at the Rodriguez Triple Junction in the Indian Ocean using ocean bottom seismometers Peer-reviewed

Katsumata, K, T. Sato, J. Kasahara, N. Hirata, R. Hino, N. Takahashi, M. Sekine, S. Miura, S. Koresawa, N. Wada

Journal Geophysical Research　106　30689-30699　2001/01

DOI： 10.1029/2000JB000106 　
Influence of water on earthquake generation along subduction zones Peer-reviewed

Kasahara, J. A. Kamimura, G. Fujie, R. Hino

Bulletine of Earthquake Research Institute　76　(3)　291-303　2001/01
Publisher: The University of Tokyo
ISSN： 0040-8972
Detailed plate boundary structure off northeast Japan coast Peer-reviewed

Narumi Takahashi, Shuichi Kodaira, Tetsuro Tsuru, JinOh Park, Yoshiyuki Kaneda, Hajimu Kinoshita, Shintaro Abe, Minoru Nishino, Ryota Hino

Geophysical Research Letters　27　(13)　1977-1980　2000/07/01
Publisher: American Geophysical Union
DOI： 10.1029/2000GL008501 　

ISSN： 0094-8276
Deep seismic structure of the seismogenic plate boundary in the off-Sanriku region, northeastern Japan Peer-reviewed

S. Ito, R. Hino, S. Matsumoto, H. Shiobara, H. Shimamura, T. Kanazawa, T. Sato, J. Kasahara, A. Hasegawa

Tectonophysics　319　(4)　261-274　2000/04/20

DOI： 10.1016/S0040-1951(99)00298-X 　

ISSN： 0040-1951
The Velocity Structure and its Resolution, off Sanriku Region

FUJIE Go, KASAHARA Junzo, HINO Ryota, SATO Toshinori, SHINOHARA Masanao

J. Geogr.　109　(4)　plate3-plate3　2000
Publisher: Tokyo Geographical Society
DOI： 10.5026/jgeography.109.4_plate3 　

ISSN： 0022-135X
地學雜誌

藤江剛, 笠原順三, 日野亮太, 佐藤利典, 篠原雅尚, 鳥海光

地学雑誌　109　(4)　plate1-plate2　2000
Publisher: Tokyo Geographical Society
DOI： 10.5026/jgeography.109.4_plate1 　

ISSN： 0022-135X
三陸沖プレート沈み込み帯における不均質地殻構造と地震活動度 -地震波反射強度分布と地震活動度との関係-

藤江剛, 笠原順三, 日野亮太, 佐藤利典, 篠原雅尚

地学雑誌　109　(4)　497-505　2000
Publisher: Tokyo Geographical Society
DOI： 10.5026/jgeography.109.4_497 　

ISSN： 0022-135X

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Off Sanriku region is a well known plate subduction zone, which lies on the west side of the Japan Trench. High seismic activities have been observed, but there are also low seismic activity regions. We conducted an OBS-controlled source seismic experiment across the seismic-aseismic boundary in 1996 to examine the relationship between seismic activity variation and crustal structure. A traveltime analysis using refraction and reflection waves was applied to the observed data to determine the 2D crustal structure. An amplitude analysis of reflection waves from the subducting plate boundary revealed a good correlation between acoustic-impedance (seismic reflectivity) and seismic activity; that is, high-impedance region is a low seismic region and vice versa. We propose the hypothesis that high-impedance is caused by fluid or hydrate rocks around the plate boundary, and this hypothesis explains the crustal velocity structure and the variations of observed reflection waves and seismic activities.
プレート沈み込みにおける水の意義と伊豆・小笠原海溝のserpentineダイアピルを横切る速度構造

上村彩, 笠原順三, 日野亮太, 篠原雅尚, 塩原肇, 金沢敏彦

地学雑誌　109　(4)　506-516　2000
Publisher: Tokyo Geographical Society
DOI： 10.5026/jgeography.109.4_506 　

ISSN： 0022-135X

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To predict earthquakes, huge efforts have been devoted to monitoring earthquakes, crustal deformations and water level during past decades, however, has been found to be extremely difficult. A new approach in marine seismic studies on earthquake prediction proposes focusing on the nature of the subducting plate boundary. Some Ocean Drilling Program (ODP) drillings and seismic reflection studies show fluid flows and the existence of hydrous minerals in the decollement zone. Considering that the subducting plate might contain much water, a number of hydrous minerals might be stable down to 150-300 km, in particular, serpentines and lawsonite. In 1998, the authors carried out a seismic experiment at the Izu-Bonin trench using Ocean Bottom Seismometers (OBSs) and controlled sources. The 130 km long E-W line crosses the Torishima forearc seamount, one of the serpentine diapirs at the eastern terminus. The velocity structure obtained along the line shows a relatively high velocity at the top and alow velocity at the bottom of the serpentine diapir. The velocity of the mantle wedge is slower than that of normal mantle. The dip of the subducting slab is initially quite gentle and abruptly becomes steep around 100 km from the trench axis. Hydration of peridotite in the mantle wedge might occur close to the Izu-Bonin trench axis and serpe ntines seem to be raised upward to the ocean bottom.
Aftershock distribution of the 1994 Sanriku-oki earthquake (Mw 7.7) revealed by ocean bottom seismographic observation Peer-reviewed

Hino, R, S. Ito, H. Shiobara, H. Shimamura, T. Sato, T. Kanazawa, J. Kasahara, A. Hasegawa

Journal Geophysical Research　105　21697-21710　2000/01

DOI： 10.1029/2000JB900174 　
1998年5月31日に三陸沖で発生したM6.3の地震について

松澤暢, 岡田知己, 日野亮太, 長谷川昭, 金澤敏彦

東北地域災害科学研究報告　35　49-54　1999/04
Heterogeneous crustal structure across a seismic block boundary along the Nankai Trough Peer-reviewed

Kimihiro Mochizuki, Gou Fujie, Toshinori Sato, Junzo Kasahara, Ryota Hino, Masanao Shinohara, Kiyoshi Suyehiro

Geophysical Research Letters　25　(13)　2301-2304　1998/07/01
Publisher: American Geophysical Union
DOI： 10.1029/98GL51867 　

ISSN： 0094-8276
Detailed subduction structure across the eastern Nankai Trough obtained from ocean bottom seismographic profiles Peer-reviewed

Nakanishi, A, H. Shiobara, R. Hino, S. Kodaira, T. Kanazawa, H. Shimamura

Journal Geophysical Research　103　27151-27168　1998/01

DOI： 10.1029/98JB02344 　
Activity of the 1995 Amami-Oshima-Kinkai Earthquakes Peer-reviewed

GOTO Kazuhiko, SHIMIZU Chikara, NAKATSUJI Tsuyoshi, KANAZAWA Toshihiko, YAMADA Tomoaki, SHIMAMURA Hideki, SHIOBARA Hajime, HINO Ryota, NISHIZAWA Azusa, KASAHARA Junzo, SATO Toshinori, KAKUTA Toshiki, MIYAMACHI Hiroki, HIRANO Shuichiro

Journal of Geography(Chigaku Zasshi)　106　(4)　503-513　1997/08
Publisher: 公益社団法人東京地学協会
DOI： 10.5026/jgeography.106.4_503 　

ISSN： 0022-135X

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An earthquake of MJMA 6.7 occurred at 19 : 37 on October 18, 1995 at about 50 km southeast of Kikai-jima in the central part of Ryukyu-islands, Japan. About 16 hours after this event, another large earthquake of MJMA 6.6 occurred in the same area. We relocate hypocenters of two large events and their aftershocks using JMA data by considering the station corrections, which are obtained by joint using the temporary observation data of ocean bottom seismometers (OBS) and JMA data. The relocated hypocentral distribution obtained by joint using of OBS and JMA data show the possibility that two large events occurred on the adjacent faults. The events during four days after the MJMA 6.7 event occurred in the region of about 70 km in length in NNE-SSW direction and the epicentral area is divided into two sub-regions, NNE and SSW sub-regions. The aftershock activity of the MJMA 6.7 event is predominant in the SSW sub-region until 7 : 00 a.m. on the next day. After 7 : 00 a.m., the activity increases in the NNE sub-region and the MJMA 6.6 event at 11 : 41 a.m. on October 19 and its aftershocks occurred in this region. On the other hand, the activity in SSW sub-region becomes low in this period. Such the alternative rise and fall activities in two sub-regions are thought to be caused by the interraction of stresses on the different faults. Therefore, the present activity is concluded to be constituted by two foreshockmainshock-aftershock sequences occurred on the adjacent faults in a short time interval.
Aftershock Observation of the 1995 Amami-Oshima-Kinkai Earthquake Using Ocean Bottom Seismometers Peer-reviewed

YAMADA Tomoaki, HINO Ryota, NISHIZAWA Azusa, SHIOBARA Hajime, SATO Toshinori, GOTO Kazuhiko, KANAZAWA Toshihiko, KASAHARA Junzo, SHIMAMURA Hideki

Journal of Geography(Chigaku Zasshi)　106　(4)　514-524　1997/08
Publisher: 公益社団法人東京地学協会
DOI： 10.5026/jgeography.106.4_514 　

ISSN： 0022-135X

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On October 18, 1995, an earthquake with magnitude Mj 6.7 occurred in the central part of Ryukyu Arc at 28&deg;1.7'N, 130&deg;23.0' E and 38 km in depth. The next day, another earthquake with magnitude Mj 6.6 occurred in the same area. The hypocenter parameters were determined by Japan Meteorological Agency (J.M.A.). For the purpose of investigating the aftershock activities finely, we put an array of twenty-two ocean bottom seismometers (OBSs) covering the area of aftershocks. The OBS observation started on October 28, ten days after the occurrence of the Mj 6.7 event, and continued about four weeks. In this study, we relocated hypocenters of the aftershocks using the data of eighteen OBSs. The results give us detailed view of the hypocenter distribution as follows : Most of aftershocks occurred (1) on the fault of Mj 6.7 event, and (2) in the focal area of Mj 6.6 (October 19, 1995). Considering the distributions of (1) and (2), we identified one of the nodal planes of the CMT solutions as the fault plane of Mj 6.7 event and Mj 6.6 event. For both events, the strike is almost parallel to the trench axis. Dip angle of the Mj 6.7 event is almost vertical. Therefore, it is obvious that this event is not a low-angle thrust-type interplate earthquake but an intraplate event.
1996年8月11日秋田・宮城県付近の地震について

海野徳仁, 堀内茂木, 山本明, 松澤暢, 日野亮太, 田中聡, 岡田知己, 橋本恵一, 堀修一郎, 河野俊夫, 仁田交市, 小野寺充, 中村綾子, 浅野陽一, 佐竹義美, 吉本和生, 中原恒, 早川俊彦, 長谷川昭, 小菅正裕, 渡辺和俊, 高野活子, 佐藤仙一, 根本信, 松岡英俊, 長谷見晶子, 佐々木克憲, 宮森まゆみ, 田中健也, 三浦英俊, 伊東明彦, 伊藤喜宏, 飯島健徳, 渡辺浩之, 小原一成, 木村尚紀, 野口伸一, 青井真, 笠原敬司

東北地域災害科学研究報告　33　17-25　1997/04
海底地震観測によるトカラ海峡-奄美大島北部海域の地震活動 Peer-reviewed

八木原寛, 角田寿喜, 宮町宏樹, 後藤和彦, 平野舟一郎, 日野亮太, 金澤敏彦, 海宝由佳, 塩原肇, 渡邊智毅, 望月将志, 根本泰雄, 島村英紀

地震. 2輯　49　(2)　227-239　1996/08/23
Publisher: 日本地震学会
ISSN： 0037-1114
Continental crust, crustal underplating, and low-Q upper mantle beneath an oceanic island arc Peer-reviewed

Kiyoshi Suyehiro, Narumi Takahashi, Yoshiro Ariie, Yasutaka Yokoi, Ryota Hino, Masanao Shinohara, Toshihiko Kanazawa, Naoshi Hirata, Hidekazu Tokuyama, Asahiko Taira

Science　272　(5260)　390-392　1996/04/19
Publisher: American Association for the Advancement of Science
DOI： 10.1126/science.272.5260.390 　

ISSN： 0036-8075
Travel-time residuals of teleseismic P-waves at the Rodriguez Triple Junction in the Indian Ocean using ocean-bottom seismometers Peer-reviewed

T Sato, K Katsumata, J Kasahara, N Hirata, R Hino, N Takahashi, M Sekine, S Miura, S Koresawa

GEOPHYSICAL RESEARCH LETTERS　23　(7)　713-716　1996/04

DOI： 10.1029/96GL00627 　

ISSN： 0094-8276
Interplate seismic activity near the northern Japan Trench deduced from ocean bottom and land-based seismic observations Peer-reviewed

R Hino, T Kanazawa, A Hasegawa

PHYSICS OF THE EARTH AND PLANETARY INTERIORS　93　(1-2)　37-52　1996/01

DOI： 10.1016/0031-9201(95)03087-5 　

ISSN： 0031-9201
Crustal Structure below the Sea-floor around the Japan Islands

HINO Ryota

Journal of geography　100　(4)　583-595　1991
Publisher: Tokyo Geographical Society
DOI： 10.5026/jgeography.100.583 　

ISSN： 0022-135X

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The results of the recent seismic refraction surveys using an Ocean Bottom Seismograph (OBS) array have clarified fine crustal structures of the trench=island-arc= back-arc systems around the Japan Islands, namely the Kurile, the Northeastern Japan, the Southwestern Japan, the Izu-Ogasawara and the Ryukyu. The present paper tries to look over theseismic velocity structures of the crust and of the uppermost mantle beneath the trenches, the island arcs and the back-arc basins revealed by the OBS studies in the last decade. New OBS data have shown regional variations in the crustal structures of the subduction zones. The crustal structures around trenches vary not only from a trench to another but also along one trench. The dip angle of a subducting oceanic lithosphere, the spatial extent of an accretionary prism and the shallow structure of a continental slope characterize each subduction zone and are deeply related to its tectonic evolution. Interesting similarity and dissimilarity are found between the structures of the Bonin Trough, a intra-arc rift, and of the Okinawa Trough, a back-arc rift, providing a clue to understanding of the mechanism of the rifting in the island-arc crust. We also note the crustal structure of the Yamato Basin, a part of the Sea of Japan (an inactive back-arc basin), a curious structure in which the crust has a composition similar to the normal oceanic crust but has a twice thickness.
Report on DELP 1989 Cruise in the TTT junction areas. Part2: Upper Crustal Structure near the trench-trench-trench triple junction off Boso Peninsula, Japan Peer-reviewed

Hirata, N, N. Takahashi, T. Amishiki, H. Katao, Y. Kaiho, S. Kashiwabara, R. Hino, H. Baba, H. Shiobara, S. Koresawa, M. Shinohara, A. Kubo, T. Kanazawa, J. Kasahara, H. Kinoshita

Bulletine of Earthquake Research Institute　67　(4)　479-512　1991/01
Publisher:
ISSN： 0040-8972
Deep seismic crustal structure beneath the Bonin Trough Peer-reviewed

Hino, R, A. Nishizawa, K. Suyehiro, H. Kinoshita

Tectonophysics　200　249-266　1991/01
磐梯山の山体を通過する地震波形記録から見た溶融体の規模について Peer-reviewed

堀内茂木, 植木貞人, 西澤あずさ, 趙大鵬, 日野亮太, 長谷川昭, 松澤暢, 河野俊夫, 仁田交市, 長谷見晶子, 佐藤魂夫, 伊東明彦

地震２　43　379-387　1990/04

DOI： 10.4294/zisin1948.43.3_379 　
Crustal structure of the Bonin Trough Peer-reviewed

Katao, H, R. Hino, H. Kinoshita, S. Nagumo

Tectonophysics　181　345-350　1990/01
Report on DELP 1987 cruise in the Ogasawara area Part III: Seismic refraction experiment using airgun-OBSH for fine crustal structure across the Ogasawara Trough along east-west track line Peer-reviewed

Hino, R, A. Nishizawa, K. Suyehiro, H. Kinoshita, S. Abe, T. Ouchi, A. Kubo, S. Koresawa, S. Nagumo

Bulletine of Earthquake Research Institute　64　(2)　p149-162　1989/01
Publisher:
ISSN： 0040-8972
Report on DELP 1987 cruise in the Ogasawara area Part IV: Explosion seismic refraction studies Peer-reviewed

Katao, H, R. Hino, S. Nagumo, S. Koresawa, A. Nishizawa, K. Suyehiro, A. Kubo, T Ouchi, M. Ishibashi, Y. Ono, H. Baba, H. Kinoshita

Bulletine of Earthquake Research Institute　1989/01
41B エアガンによる磐梯山周辺域の地殻構造探査

長谷川昭, 堀内茂木, 植木貞人, 西澤あずさ, 松澤暢, 海野徳仁, 堀修一郎, 河野俊夫, 仁田交市, 稲盛隆穂, 日野亮太, 松本聡, 梅津功, 橋本恵一, 立花憲司, 趙大鵬, 佐藤吉之, 大久保正, 浜口博之, 高木章雄, 佐藤魂夫, 小菅正裕, 井上純, 田中和夫, 長谷見晶子, 鈴木将之, 伊東明彦, 末広潔

日本火山学会講演予稿集　1988　58-58　1988
Publisher: 特定非営利活動法人日本火山学会
DOI： 10.18940/vsj.1988.2.0_58

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Misc. 205

2024年能登半島地震震源域における緊急海底地震観測

篠原雅尚, 日野亮太, 高橋努, 尾鼻浩一郎, 小平秀一, 東龍介, 山田知朗, 悪原岳, 山下裕亮, 蔵下英司, 村井芳夫, 一瀬建日, 中東和夫, 馬場久紀, 太田雄策, 伊藤喜宏, 八木原寛, 仲谷幸浩, 藤江剛, 佐藤利典, 塩原肇, 望月公廣, 酒井慎一

海洋調査技術学会研究成果発表会講演要旨集　36th　2024
Earthquake Data for the 2023 Mw6.2 Suzu Earthquake in the Northeastern Noto Peninsula, Japan

Yoshida, Keisuke, Uchida, Naoki, Matsumoto, Yoshidki, Orimo, Masaki, Okada, Tomomi, Hirahara, Satoshi, Kimura, Shuutoku, Hino, Ryota

Zenodo　2023/10

DOI： 10.5281/zenodo.10019859 　
Wave Gliderによる三陸沖海面熱フラックス観測

永野憲, 長谷川拓也, 有吉慶介, 飯沼卓史, 福田達也, 藤井信宏, 富田史章, 堀高峰, 日野亮太, 高橋浩晃

日本海洋学会大会講演要旨集(Web)　2023　2023
GNSS-Acoustic seafloor geodetic observations and their results along the Japan-Kuril trench

富田史章, 木戸元之, 飯沼卓史, 太田雄策, 日野亮太, 大園真子, 高橋浩晃, PLATA-MARTINEZ Raymondo, 野徹雄, 中東和夫, 中村恭之

日本地震学会秋季大会講演予稿集(CD-ROM)　2023　2023
GNSS-Acoustic Observation Using the Wave Glider to Detect the Seafloor Crustal Deformation (3)

飯沼卓史, 木戸元之, 福田達也, 太田雄策, 富田史章, 有吉慶介, 永野憲, PLATA-MARTINEZ Raymundo, 日野亮太, 高橋浩晃, 堀高峰

日本測地学会講演会要旨　138th　2022
Recent GNSS-Acoustic seafloor geodetic observations off Tohoku and their results

富田史章, 木戸元之, 飯沼卓史, 太田雄策, 本荘千枝, 日野亮太, 野徹雄, 中東和夫

日本地震学会秋季大会講演予稿集(CD-ROM)　2022　2022
Development of a deep sea self-calibrated OBP with the A-0-A method for detection of long-term crustal deformation (fourth report)

太田雄策, 日野亮太, 佐藤真樹子, 鈴木秀市, 大塚英人, 梶川宏明, 小畠時彦

日本測地学会講演会要旨　136th　2021
海域機動地震観測による熊野灘のスロー地震調査

悪原岳, 杉岡裕子, 山下裕亮, 大柳修慧, FARAZI Atikul Haque, 伊藤喜宏, 日野亮太, 東龍介, 荒木英一郎, 利根川貴志, 辻健, 望月公廣, 山田知朗, 武村俊介, 篠原雅尚

海と地球のシンポジウム発表課題一覧・要旨集(CD-ROM)　2021　2021
Development of a deep sea self-calibrated OBP with the A-0-A method for detection of long-term crustal deformation (Third report)

太田雄策, 日野亮太, 佐藤真樹子, 鈴木秀市, 梶川宏明, 小畠時彦

日本測地学会講演会要旨　134th　2020
Preliminary assessment of quality of the S-net long-term ocean bottom pressure observation in the northern part of the Japan Trench for detecting crustal deformation

久保田達矢, 近貞直孝, 日野亮太, 太田雄策, 大塚英人

日本地球惑星科学連合大会予稿集(Web)　2020　2020
Tectonic tremor activity along the Japan trench before the 2011 Tohoku-oki earthquake

高橋秀暢, 日野亮太, 内田直希, 東龍介, 川久保晋, 太田和晃, 篠原雅尚

日本地震学会秋季大会講演予稿集(CD-ROM)　2020　2020
Modelling of spontaneous and periodic slow slips and a tsunami earthquake in the northern part of the Japan Trench

中田令子, 内田直希, 日野亮太

日本地震学会秋季大会講演予稿集(CD-ROM)　2020　2020
リアルタイム津波浸水被害予測の全国展開に向けた検討

越村俊一, 阿部孝志, 井上拓也, 撫佐昭裕, 村嶋陽一, 鈴木崇之, 太田雄策, 日野亮太, 佐藤佳彦, 加地正明, 小林広明

SENAC : 東北大学大型計算機センター広報　52　(2)　2-8　2019/04
Publisher: 東北大学サイバーサイエンスセンター
ISSN： 0286-7419
非定常地殻変動の把握を目指したA-0-A方式による深海対応海底水圧計ドリフト補正システムの開発(第2報)

太田雄策, 日野亮太, 佐藤真樹子, 鈴木秀市, 梶川宏明, 小畠時彦

日本測地学会講演会要旨　132nd　2019
釜石沖繰り返し地震の震源直上における浅海底地震観測の試み—平成30年度技術業務報告

鈴木秀市, 佐藤真樹子, 東龍介, 内田直希, 日野亮太, 河野俊夫, 篠原雅尚, 八木健夫

東京大学地震研究所技術研究報告 / 東京大学地震研究所 [編]　(25)　47-49　2019
Publisher: 東京大学地震研究所
ISSN： 1342-6486
茨城県沖日本海溝沿いの地殻構造不均質

望月公廣, 山田知朗, 篠原雅尚, 日野亮太, 東龍介, 伊藤喜宏, 村井芳夫, 植平賢司, 佐藤利典

日本地震学会秋季大会講演予稿集(CD-ROM)　2019　2019
S-netを用いた東北日本前弧海域下のS波スプリッティング解析

内田直希, 中島淳一, 高木涼太, 吉田圭佑, 中山貴史, 日野亮太, 岡田知己, 浅野陽一, 田中佐千子

日本地球惑星科学連合大会予稿集(Web)　2019　2019
S-netを用いた海域総合解析

内田直希, 東龍介, 石上朗, 岡田知己, 高木涼太, 豊国源知, 海野徳仁, 太田雄策, 佐藤真樹子, 鈴木秀市, 高橋秀暢, 立岩和也, ZHAO Dapeng, 中山貴史, 長谷川昭, 日野亮太, 平原聡, 松澤暢, 吉田圭佑

日本地球惑星科学連合大会予稿集(Web)　2019　2019
浅海用係留ブイ方式海底地震計による2019年山形県沖の地震の余震観測

篠原雅尚, 酒井慎一, 悪原岳, 望月公広, 日野亮太, 山下裕亮, 佐藤比呂志

日本地震学会秋季大会講演予稿集(CD-ROM)　2019　2019
Configuration and structure of the Philippine Sea plate off Boso, Japan

ITO Aki, TONEGAWA Takashi, UCHIDA Naoki, YAMAMOTO Yojiro, SUETSUGU Daisuke, HINO Ryota, SUGIOKA Hiroko, OBANA Koichiro, NAKAHIGASHI Kazuo, SHINOHARA Masanao

日本地震学会秋季大会講演予稿集(CD-ROM)　2019　2019
房総沖太平洋プレート内二重深発地震の発震機構:2011年東北地震後の時間変化

CHEN Guanyu, 佐藤利典, 佐藤智治, 寺田麻美, 篠原雅尚, 望月公廣, 山田知朗, 植平賢司, 眞保敬, 小平秀一, 町田祐弥, 日野亮太, 東龍介, 村井芳夫, 伊藤喜宏, 八木原寛, 平田賢治, 橋間昭徳, FREED Andrew M

日本地球惑星科学連合大会予稿集(Web)　2019　ROMBUNNO.SSS10‐P06 (WEB ONLY)　2019
OBSアレイで観測された日本海溝での誘発低周波微動

大柳修慧, 太田和晃, 伊藤喜宏, 日野亮太, 太田雄策, 東龍介, 篠原雅尚, 望月公廣, 佐藤利典, 村井芳夫

日本地震学会秋季大会講演予稿集(CD-ROM)　2018　ROMBUNNO.S22‐P06　2018/09/21
自己浮上式海底地震計を用いた2011年東北沖地震震源域におけるモニタリング観測

篠原雅尚, 山田知朗, 望月公廣, 中東和夫, 中東和夫, 町田祐弥, 町田祐弥, 真保敬, 真保敬, 悪原岳, 仲谷幸浩, 仲谷幸浩, 塩原肇, 村井芳夫, 日野亮太, 伊藤喜宏, 伊藤喜宏, 佐藤利典, 植平賢司, 植平賢司, 八木原寛, 尾鼻浩一郎, 小平秀一

日本地震学会秋季大会講演予稿集(CD-ROM)　2018　ROMBUNNO.S22‐11　2018/09/21
日本海溝の微動活動

太田和晃, 伊藤喜宏, 片上智史, 大柳修慧, 日野亮太, 太田雄策, 東龍介, 篠原雅尚, 望月公廣, 佐藤利典, 村井芳夫

日本地震学会秋季大会講演予稿集(CD-ROM)　2018　ROMBUNNO.S22‐14　2018/09/21
宮城県沖プレート境界浅部域の反射強度分布

東龍介, 日野亮太, 望月公廣, 村井芳夫, 八木原寛, 佐藤利典, 篠原雅尚

日本地震学会秋季大会講演予稿集(CD-ROM)　2018　ROMBUNNO.S22‐18　2018/09/21
Seismic refraction and wide-angle reflection experiment in southern Kyushu, Japan: (1) the 2017 exploration report

MIYAMACHI Hiroki, TAKAHASHI Hiroaki, AOYAMA Hiroshi, SHIINA Takahiro, TAKADA Masamitsu, ICHIYANAGI Masayoshi, YAMAGUCHI Teruhiro, ONO Natsuki, KAZUMA Saito, ITO Chihiro, MURAI Yoshio, TSUTSUI Tomoki, YUSUKE Inoue, TAKEI Ryuichi, YAMAMOTO Mare, HIRAHARA Satoshi, NAKAYAMA Takashi, HINO Ryota, AZUMA Ryosuke, OTOMO Shuhei, KURASHIMO Eiji, IWASAKI Takaya, SHINOHARA Masanao, YAMADA Tomoaki, ABE Eiji, NAKAHIGASHI Kazuo, WATANABE Toshiki, MAEDA Yuta, HORIKAWA Shinichiro, OKUDA Takashi, TSUJI Shuhei, HASEGAWA Daima, KATAO Hiroshi, SHIBUTANI Takuo, MIURA Tsutomu, NAKAGAWA Jun, KATO Shinya, YAMASHITA Yusuke, MATSUSHIMA Takeshi, ISODA Kenshin, TRIAHADINI Agnis, TEGURI Yoshiko, MIYAMACHI Rintaro, SHIMIZU Hiroshi, KOBAYASHI Reiji, NAKAI Kazuho, SODA Masakazu, YAKIWARA Hiroshi, HIRANO Shuichiro

日本地球惑星科学連合大会予稿集(Web)　2018　ROMBUNNO.SSS11‐10 (WEB ONLY)　2018/05
非地震性すべりの伝播速度と摩擦特性との関係:実際問題への適用に向けて

有吉慶介, AMPUERO Jean-Paul, BUERGMANN Roland, 松澤暢, 長谷川昭, 日野亮太, 堀高峰

日本地震学会秋季大会講演予稿集(CD-ROM)　2018　2018
スロー地震の移動速度と摩擦パラメターの定量的な関係式の導出

有吉慶介, BURGMANN Roland, AMPUERO Jean-Paul, 松澤暢, 長谷川昭, 日野亮太, 堀高峰

日本地球惑星科学連合大会予稿集(Web)　2018　2018
非定常地殻変動の把握を目指したA-0-A方式による深海対応海底水圧計ドリフト補正システムの開発(序報)

太田雄策, 西間木佑衣, 日野亮太, 鈴木秀市, 佐藤真樹子, 梶川宏明, 小畠時彦

日本測地学会講演会要旨　130th　2018
宮城県沖における低周波微動発生域の推定(2008~2015年)

片上智史, 伊藤喜宏, 太田和晃, 日野亮太, 鈴木秀市, 篠原雅尚

日本地震学会秋季大会講演予稿集(CD-ROM)　2018　2018
スーパーコンピュータによるリアルタイム津波浸水被害予測

越村俊一, 阿部孝志, 撫佐昭裕, 村嶋陽一, 鈴木崇之, 井上拓也, 太田雄策, 日野亮太, 佐藤佳彦, 加地正明, 小林広明

SENAC : 東北大学大型計算機センター広報　51　(1)　30-34　2018/01
Publisher: 東北大学サイバーサイエンスセンター
ISSN： 0286-7419
房総沖における太平洋プレート内二重深発地震面の発震機構:2011年東北地震前後の変化

佐藤智治, 佐藤利典, 寺田麻美, 篠原雅尚, 望月公廣, 山田知朗, 植平賢司, 眞保敬, 小平秀一, 町田祐弥, 日野亮太, 東龍介, 村井芳夫, 伊藤喜宏, 八木原寛, 平田賢治

日本地球惑星科学連合大会予稿集(Web)　2018　ROMBUNNO.SSS12‐P02 (WEB ONLY)　2018
Seismic refraction and wide-angle reflection experiment in and around the Aira caldera (2) Preliminary results and the 2018 exploration plan

Miyamachi H., Ito C., Murai Y., Tsutsui T., Inoue Y., Takei R., Yamamoto M., Hirahara S., Nakayama T., Azuma R., Otomo S., Takahashi H., Hino R., Abe E., Kurashimo E., Iwasaki T., Shinohara M., Yamada T., Nakahigashi K., Watanabe T., Maeda Y., Horikawa S., Aoyama H., Okuda T., Tsuji S., Hasegawa D., Katao H., Shibutani T., Miura T., Nakagawa J., Kato S., Yamashita Y., Matsushima T., Shiina T., Teguri Y., Miyamachi R., Triahadini A., Isoda K., Shimizu H., Kobayashi R., Soda M., Nakai K., Yakiwara H., Hirano S., Takada M., Tanaka Y., Kawasaki S., Sato N., Ichiyanagi M., Yamaguchi T., Ono N., Saito K.

PROGRAMME AND ABSTRACTS THE VOLCANOLOGICAL SOCIETY OF JAPAN　2018　(0)　105-105　2018
Publisher: The Volcanological Society of Japan
DOI： 10.18940/vsj.2018.0_105 　

ISSN： 2433-5320
Seismic activity and velocity structure of arc-arc collision zone and the fore arc of Kurile subduction zone in the southern Hokkaido deduced from ocean bottom seismographic observation

MURAI Yoshio, KATSUMATA Kei, HINO Ryota, SHINOHARA Masanao

Annual Meeting of the Geological Society of Japan　2018　(0)　11　2018
Publisher: The Geological Society of Japan
DOI： 10.14863/geosocabst.2018.0_11 　

ISSN： 1348-3935

eISSN： 2187-6665
2011年の宮城沖スロースリップ震源域周辺の地殻構造

東龍介, 日野亮太, 望月公廣, 村井芳夫, 八木原寛, 佐藤利典, 篠原雅尚

日本地震学会秋季大会講演予稿集(CD-ROM)　2017　ROMBUNNO.S06‐02　2017/10/06
数値シミュレーションから見出された余効すべり伝播速度と摩擦特性の関係

有吉慶介, 松澤暢, Burgmann Roland, 長谷川昭, 日野亮太, 堀高峰

SENAC : 東北大学大型計算機センター広報　50　(2)　3-7　2017/04
Publisher: 東北大学サイバーサイエンスセンター
ISSN： 0286-7419
スロー地震の移動速度と摩擦特性との関係

有吉慶介, 松澤暢, BURGMANN Roland, 長谷川昭, 日野亮太, 堀高峰

日本地球惑星科学連合大会予稿集(Web)　2017　2017
自己浮上式海底圧力計による海底上下変動長期観測にむけて

日野亮太, 鈴木秀市, 佐藤真樹子, 太田雄策, 伊藤喜宏, 梶川宏明, 小畠時彦

日本地球惑星科学連合大会予稿集(Web)　2017　2017
房総沖スロースリップイベント周辺域のフィリピン海プレート上面からの反射波強度分布

河野昭博, 佐藤利典, 篠原雅尚, 望月公廣, 山田知朗, 植平賢司, 眞保敬, 町田祐弥, 日野亮太, 東龍介

日本地震学会秋季大会講演予稿集(CD-ROM)　2017　2017
房総沖スロースリップイベント周辺域の3次元地震波速度構造とフィリピン海プレート上面の反射波強度分布

河野昭博, 佐藤利典, 篠原雅尚, 望月公廣, 山田知朗, 植平賢司, 眞保敬, 町田祐弥, 日野亮太, 東龍介

日本地球惑星科学連合大会予稿集(Web)　2017　2017
海底面での機動的傾斜観測実現に向けたBBOBST-NXでの長期試験観測

塩原肇, 篠原雅尚, 伊藤亜妃, 日野亮太, 佐藤利典, 杉岡裕子

日本地震学会秋季大会講演予稿集(CD-ROM)　2017　2017
振幅スペクトル形状を用いたテンプレート解析法による低周波微動の検出

片上智史, 伊藤喜宏, 太田和晃, 日野亮太, 鈴木秀市, 篠原雅尚

日本地震学会秋季大会講演予稿集(CD-ROM)　2017　2017
Seismic structure around the SSE event source in northeastern Japan forearc deduced by an airgun-ocean bottom survey

AZUMA Ryosuke, HINO Ryota, MOCHIZUKI Kimihiro, MURAI Yoshio, YAKIWARA Hiroshi, SATO Toshinori, SHINOHARA Masanao

日本地球惑星科学連合大会予稿集(Web)　2017　ROMBUNNO.SSS04‐P08 (WEB ONLY)　2017
宮城県沖における海底地震計アレイ観測

太田和晃, 伊藤喜宏, 日野亮太, 太田雄策, 東龍介, 篠原雅尚, 望月公廣, 佐藤利典, 村井芳夫

日本地震学会秋季大会講演予稿集　2016　35　2016/09/16
海陸統合地震観測データから見る2011年東北沖地震震源域における地震発生前後のb値の時空間変化

仲谷幸浩, 望月公廣, 篠原雅尚, 山田知朗, 塩原肇, 日野亮太, 東龍介, 伊藤喜宏, 村井芳夫, 佐藤利典, 植平賢司, 眞保敬, 平田賢治, 八木原寛, 小平秀一, 尾鼻浩一郎, 町田祐弥, 対馬弘晃

日本地震学会秋季大会講演予稿集　2016　222　2016/09/16
長期海底地震観測から得られた北海道・根室沖の大地震発生域周辺の地震活動

村井芳夫, 日野亮太, 伊藤喜宏, 鈴木秀市, 金田義行, 東龍介

日本地震学会秋季大会講演予稿集　2016　157　2016/09/16
東北沖で周期的なスロースリップ？

内田直希, 日野亮太, 飯沼卓史

なゐふる　106　4-5　2016/07
リアルタイム津波浸水被害予測技術の実証

越村俊一, 井上拓也, 日野亮太, 太田雄策, 小林広明, 撫佐昭裕, 村嶋陽一, 目黒公郎

地域安全学会梗概集(CD-ROM)　(38)　ROMBUNNO.C‐15　2016/05
余効すべり伝播速度に関する摩擦特性の依存性

有吉慶介, 松澤暢, 長谷川昭, 日野亮太, 堀高峰

日本地球惑星科学連合大会予稿集(Web)　2016　2016
房総沖スロースリップイベント周辺域の速度構造

河野昭博, 佐藤利典, 篠原雅尚, 望月公廣, 山田知朗, 植平賢司, 眞保敬, 町田祐弥, 日野亮太, 東龍介

日本地震学会秋季大会講演予稿集　2016　2016
海底地震観測データから推定される房総沖フィリピン海プレート上面深度

伊藤亜妃, 杉岡裕子, 尾鼻浩一郎, 中野優, 山本揚二朗, 末次大輔, 中東和夫, 篠原雅尚, 日野亮太

日本地震学会秋季大会講演予稿集　2016　2016
2011年東北地方太平洋沖地震発生前の沈み込み帯浅部で発生するmicro Low-Frequency Tremor

片上智史, 伊藤喜宏, 太田和晃, 日野亮太, 鈴木秀市, 篠原雅尚

日本地震学会秋季大会講演予稿集　2016　2016
Spatiotemporal changes in the b-value along the plate interface before and after the 2011 Tohoku earthquake constrained by ocean bottom seismic network: Post-Tohoku

NAKATANI Yukihiro, MOCHIZUKI Kimihiro, SHINOHARA Masanao, YAMADA Tomoaki, SHIOBARA Hajime, HINO Ryota, AZUMA Ryosuke, ITO Yoshihiro, MURAI Yoshio, SATO Toshinori, UEHIRA Kenji, SHIMBO Takashi, YAKIWARA Hiroshi, KODAIRA Shuichi, MACHIDA Yuya, HIRATA Kenji, TSUSHIMA Hiroaki

日本地球惑星科学連合大会予稿集(Web)　2016　ROMBUNNO.SSS02‐21 (WEB ONLY)　2016
Amplitude changes of the seismic reflected phases from the plate interface before and after the 2011 Tohoku earthquake around its northern limit region as revealed by active seismic surveys

ISHIHARA Ken, MOCHIZUKI Kimihiro, YAMADA Tomoaki, SHINOHARA Masanao, YAMASHITA Yusuke, AZUMA Ryosuke, HINO Ryota, SATO Toshinori, MURAI Yoshio, YAKIWARA Hiroshi

日本地球惑星科学連合大会予稿集(Web)　2016　ROMBUNNO.SSS02‐23 (WEB ONLY)　2016
Seismic observations using ocean bottom seismometer arrays off-shore Miyagi, northeast Japan

OHTA Kazuaki, ITO Yoshihiro, HINO Ryota, OHTA Yusaku, AZUMA Ryosuke, SHINOHARA Masanao, MOCHIZUKI Kimihiro, SATO Toshinori, MURAI Yoshio

日本地球惑星科学連合大会予稿集(Web)　2016　ROMBUNNO.SSS02‐P04 (WEB ONLY)　2016
長期観測型海底地震計を用いた2011年東北沖地震震源域北部における地震観測

篠原雅尚, 山田知朗, 望月公廣, 悪原岳, 仲谷幸浩, 塩原肇, 村井芳夫, 平塚晋也, 日野亮太, 太田雄策, 東龍介, 佐藤利典, 伊藤喜宏, 山下裕亮, 中東和夫, 寺岡拓也, 八木原寛

日本地球惑星科学連合大会予稿集(Web)　2016　ROMBUNNO.SSS02‐22 (WEB ONLY)　2016
房総沖における自然地震を用いた3次元地震波速度構造

寺田麻美, 佐藤利典, 水野真理子, 篠原雅尚, 望月公廣, 山田知朗, 植平賢司, 眞保敬, 小平秀一, 町田祐弥, 日野亮太, 東龍介, 村井芳夫, 伊藤喜宏, 八木原寛, 平田賢治, 平田賢治

日本地球惑星科学連合大会予稿集(Web)　2016　ROMBUNNO.SSS26‐P05 (WEB ONLY)　2016
人工地震探査で推定した2011年東北沖地震大すべり域周辺の地殻構造

東龍介, 日野亮太, 太田雄策, 望月公廣, 村井芳夫, 伊藤喜宏, 八木原寛, 佐藤利典, 篠原雅尚

日本地震学会秋季大会講演予稿集　2015　129　2015/10/05
房総沖における自然地震を用いた3次元地震波速度構造

寺田麻美, 佐藤利典, 水野真理子, 篠原雅尚, 望月公廣, 山田知朗, 植平賢司, 真保敬, 町田祐弥, 小平秀一, 日野亮太, 東龍介, 村井芳夫, 伊藤喜宏, 八木原寛, 平田賢治

日本地震学会秋季大会講演予稿集　2015　229　2015/10/05
2011年東北地方太平洋沖地震震源域北限周辺における人工震源地震波構造調査によるP波速度構造

石原健, 望月公廣, 山田知朗, 篠原雅尚, 山下裕亮, 東龍介, 日野亮太, 佐藤利典, 村井芳夫, 八木原寛

日本地震学会秋季大会講演予稿集　2015　130　2015/10/05
2011年東北沖地震震源域における大規模海底余震観測データを用いたプレート境界型地震の検出

仲谷幸浩, 望月公廣, 篠原雅尚, 山田知朗, 塩原肇, 日野亮太, 東龍介, 伊藤喜宏, 村井芳夫, 佐藤利典, 植平賢司, 真保敬, 八木原寛, 小平秀一, 町田裕弥, 平田賢治, 対馬弘晃

日本地震学会秋季大会講演予稿集　2015　131　2015/10/05
海底地震観測による2011年東北地震北部地震域の余震分布

平井広大, 中東和夫, 島伸和, 村井芳夫, 日野亮太, 東龍介, 伊藤喜宏, 佐藤利典, 真保敬, 町田祐弥, 山田知朗, 望月公廣, 塩原肇, 植平賢司, 八木原寛, 篠原雅尚

日本地震学会秋季大会講演予稿集　2015　160　2015/10/05
An overview of the Mw 9, 11 March 2011, Tohoku earthquake

Ryota Hino

Summary of the Bulletin of the International Seismological Centre　48　100-132　2015/03
HPCが拓く固体地球科学の未来:導入

堀高峰, 金田義行, 堀宗朗, 日野亮太, 有川太郎, 等々力賢

日本地球惑星科学連合大会予稿集(Web)　2015　2015
房総沖プレート沈み込み帯の速度構造と反射波強度分布

河野昭博, 佐藤利典, 篠原雅尚, 望月公廣, 山田知朗, 植平賢司, 眞保敬, 町田祐弥, 日野亮太, 東龍介

日本地震学会秋季大会講演予稿集　2015　2015
海底地震計を用いた房総沖プレート沈み込み帯の地震波速度構造

河野昭博, 佐藤利典, 篠原雅尚, 望月公廣, 山田知朗, 植平賢司, 眞保敬, 町田祐弥, 日野亮太, 東龍介

日本地球惑星科学連合大会予稿集(Web)　2015　2015
2011年東北沖地震以降の日本海溝海側斜面における海底地震観測

尾鼻浩一郎, 小平秀一, 藤江剛, 山本揚二朗, 高橋努, 三浦誠一, 佐藤壮, 中村恭之, 山下幹也, 末次大輔, 杉岡裕子, 伊藤亜妃, 篠原雅尚, 日野亮太

ブルーアース要旨集　2015　2015
房総沖海底地震観測による地震活動

伊藤亜妃, 杉岡裕子, 尾鼻浩一郎, 中野優, 山本揚二朗, 末次大輔, 中東和夫, 篠原雅尚, 日野亮太

日本地震学会秋季大会講演予稿集　2015　2015
Polarization解析を用いた東北沖浅部微動の検出に向けて

太田和晃, 伊藤喜宏, 片上智史, 日野亮太, 鈴木秀市, 篠原雅尚

日本地震学会秋季大会講演予稿集　2015　2015
2011年東北地方太平洋沖地震前に海溝軸近傍で観測された低周波微動の検証

片上智史, 伊藤喜宏, 太田和晃, 日野亮太, 鈴木秀市, 篠原雅尚

日本地震学会秋季大会講演予稿集　2015　2015
東北地震に伴う固有地震活動の揺らぎから推定された摩擦特性と余効すべり伝播過程

有吉慶介, 内田直希, 松澤暢, 日野亮太, 長谷川昭, 堀高峰, 金田義行

SENAC : 東北大学大型計算機センター広報　48　(1)　33-38　2015/01
Publisher: 東北大学サイバーサイエンスセンター
ISSN： 0286-7419
2011年東北地方太平洋沖地震震源域北限周辺における人工震源地震波構造調査による浅部P波速度構造

石原健, 望月公廣, 山田知朗, 山下裕亮, 篠原雅尚, 東龍介, 日野亮太, 佐藤利典, 村井芳夫, 八木原寛

日本地球惑星科学連合大会予稿集(Web)　2015　ROMBUNNO.SCG57‐P21 (WEB ONLY)　2015
白鳳丸KH‐13‐5次航海による2011年東北沖地震震源域北限周辺における人工震源構造調査(序報)

望月公廣, 石原健, 山田知朗, 山下裕亮, 篠原雅尚, 東龍介, 日野亮太, 佐藤利典, 八木原寛

日本地震学会秋季大会講演予稿集　2014　59　2014/11/01
2011年東北沖地震で発生した最大余震周辺の微小地震活動

米島慎二, 望月公廣, 篠原雅尚, 山田知朗, 日野亮太, 伊藤善宏, 村井芳夫, 佐藤利典

日本地震学会秋季大会講演予稿集　2014　112　2014/11/01
地震活動から見る2011年東北沖地震の震源域南限

仲谷幸浩, 望月公廣, 篠原雅尚, 山田知朗, 日野亮太, 伊藤喜宏, 村井芳夫, 佐藤利典

日本地震学会秋季大会講演予稿集　2014　146　2014/11/01
精密温度計付き自己浮上式海底圧力計の開発 (平成25年度技術業務報告)

鈴木秀市, 伊藤喜宏, 日野亮太

東京大学地震研究所技術研究報告　(20)　50-52　2014
Publisher: 東京大学地震研究所
ISSN： 1342-6486
超低周波地震の活動に基づくプレート間固着の推定

有吉慶介, 松澤暢, 日野亮太, 長谷川昭, 堀高峰, 中田令子, 金田義行

SENAC : 東北大学大型計算機センター広報　47　(1)　29-34　2014/01
Publisher: 東北大学サイバーサイエンスセンター
ISSN： 0286-7419
2011年東北地震震源域の構造不均質

山本揚二朗, 尾鼻浩一郎, 町田祐弥, 中東和夫, 篠原雅尚, 鈴木健介, 伊藤喜宏, 日野亮太, 小平秀一, 金田義行, 村井芳夫, 佐藤利典, 植平賢司, 八木原寛, 平田賢治, 対馬弘晃, 山崎明, 杉岡裕子, 伊藤亜妃, 末次大輔

日本地震学会秋季大会講演予稿集　2013　78　2013/10/01
2011年東北地方太平洋沖地震南部震源域における地震活動と地殻構造

町田祐弥, 篠原雅尚, 中東和夫, 山田知朗, 望月公廣, 塩原肇, 村井芳夫, 日野亮太, 佐藤利典, 植平賢司, 八木原寛

日本地震学会秋季大会講演予稿集　2013　214　2013/10/01
茨城県沖稠密OBSアレイを用いた沈み込む海山周辺での地震活動検出

仲谷幸浩, 望月公廣, 篠原雅尚, 山田知朗, 日野亮太, 伊藤喜宏, 村井芳夫, 佐藤利典

日本地震学会秋季大会講演予稿集　2013　26　2013/10/01
陸側プレート前縁部構造不均質と海溝近傍の地震時すべり量の関係性

東龍介, 日野亮太, 伊藤喜宏, 望月公廣, 高波鐵夫, 篠原雅尚, 村井芳夫, 佐藤利典, 植平賢司, 金沢敏彦

日本地震学会秋季大会講演予稿集　2013　79　2013/10/01
宮城沖日本海溝陸側斜面の海底地形と2011年東北地方太平洋沖地震・津波に伴う混濁流

三浦亮, 新井和乃, 成瀬元, 長谷川四郎, 大村亜希子, 川村喜一郎, 日野亮太, 海宝由佳

日本地質学会学術大会講演要旨　120th　208　2013/09/10
Publisher: The Geological Society of Japan
DOI： 10.14863/geosocabst.2013.0_405 　

ISSN： 1348-3935

eISSN： 2187-6665
小繰り返し地震震源域における地震活動の変化から推定された摩擦構成則と地震発生過程

有吉慶介, 金田義行, 松澤暢, 日野亮太, 長谷川昭

日本地震学会秋季大会講演予稿集　2013　2013
東北沖津波により発生した混濁流のダイナミクス

新井和乃, 成瀬元, 川村喜一郎, 三浦亮, 日野亮太, 伊藤喜宏, 稲津大祐, 入野智久, 池原研, 村山雅史, 横川美和, 泉典洋

堆積学研究　72　(1)　2013

ISSN： 1342-310X
東北地方太平洋沖地震・津波により発生した混濁流のダイナミクス

新井和乃, 成瀬元, 川村喜一郎, 入野智久, 池原研, 齋藤有, 村山雅史, 三浦亮, 日野亮太, 伊藤喜宏, 稲津大祐, 横川美和, 泉典洋

日本地質学会学術大会講演要旨　120th　2013

ISSN： 1348-3935
東北沖津波による発生した混濁流のダイナミクス

新井和乃, 成瀬元, 川村喜一郎, 三浦亮, 日野亮太, 伊藤喜宏, 稲津大祐, 入野智久, 池原研, 村山雅史, 横川美和, 泉典洋

日本堆積学会大会プログラム・講演要旨　2013　2013
Seismicity near the hypocenter of the 2011 off the Pacific coast of Tohoku earthquake deduced by using ocean bottom seismographic data

SUZUKI Kensuke, HINO Ryota, ITO Yoshihiro, YAMAMOTO Yojiro, SUZUKI Syuichi, FUJIMOTO Hiromi, SHINOHARA Masanao, ABE Masao, KAWAHARADA Yoshiharu, HASEGAWA Yohei, KANEDA Yoshiyuki

EPS : Earth, Planets and Space　64　(12)　1125-1135　2012/12/01
Publisher: Terra Scientific Pub. Co
ISSN： 1343-8832
2011年東北地方太平洋沖地震の大すべりに関与した東北日本弧前縁部のP波速度構造不均質

東龍介, 日野亮太, 伊藤喜宏, 望月公廣, 高波鐵夫, 篠原雅尚, 村井芳夫, 佐藤利典, 植平賢司, 金沢敏彦

日本地震学会秋季大会講演予稿集　2012　158　2012/10/01
海底地震観測と陸上観測記録の統合解析による2011年東北地震震源域周辺の地震波速度構造

山本揚二朗, 尾鼻浩一郎, 町田祐弥, 中東和夫, 篠原雅尚, 鈴木健介, 伊藤喜宏, 日野亮太, 小平秀一, 金田義行, 村井芳夫, 佐藤利典, 植平賢司, 八木原寛, 平田賢治, 杉岡裕子, 伊藤亜妃, 末次大輔

日本地震学会秋季大会講演予稿集　2012　159　2012/10/01
新しいプレート境界モデルに向けた海底地震地殻変動モニタリング観測研究と技術開発

篠原雅尚, 塩原肇, 望月公廣, 山田知朗, 一瀬建日, 村井芳夫, 日野亮太, 藤本博己, 木戸元之, 伊藤喜宏, 佐藤利典, 清水洋, 八木原寛, 酒井慎一, 小原一成, 平田直

日本地震学会秋季大会講演予稿集　2012　34　2012/10/01
2011年東北地方太平洋沖地震北部震源域での海底地震計を用いた余震観測

中東和夫, 町田祐弥, 山田知朗, 望月公廣, 塩原肇, 篠原雅尚, 村井芳夫, 日野亮太, 佐藤利典, 植平賢司, 植平賢司, 八木原寛, 平田賢治, 小平秀一

日本地震学会秋季大会講演予稿集　2012　228　2012/10/01
海溝型巨大地震の発生過程と浅部ゆっくり地震の活動変化との関係

有吉慶介, 堀高峰, 中田令子, 金田義行, 松澤暢, 日野亮太, 長谷川昭

日本地震学会秋季大会講演予稿集　2012　2012
鉛直地震探査(VSP)による熊野海盆付加帯の地震波減衰構造

日野亮太, 辻健, 真田佳典, PARK J.-O., 荒木英一郎, 木下正高, BANGS Nathan, VON HUENE Roland, MOORE Gregory

日本地震学会秋季大会講演予稿集　2012　2012
2011年東北地方太平洋沖地震によって発生した混濁流の痕跡

新井和乃, 成瀬元, 石丸卓哉, 横川美和, 齋藤有, 村山雅史, 松本弾, 佐藤智之, 田中源吾, 北沢俊幸, 日野亮太, 伊藤喜宏, 稲津大祐, 泉典洋, 三浦亮, 川村喜一郎, 野牧秀隆, 亀尾桂

堆積学研究　71　(3)　2012

ISSN： 1342-310X
2011年東北地方太平洋沖地震によって発生した混濁流の痕跡

新井和乃, 成瀬元, 石丸卓哉, 横川美和, 齋藤有, 村山雅史, 松本弾, 佐藤智之, 田中源吾, 北沢俊幸, 日野亮太, 伊藤喜宏, 稲津大祐, 泉典洋, 三浦亮, 川村喜一郎, 野牧秀隆, 亀尾桂

日本堆積学会大会プログラム・講演要旨　2012　2012
2011年東北地方太平洋沖地震に伴う海溝陸側斜面の余震活動

尾鼻浩一郎, 杉岡裕子, 伊藤亜妃, 中村恭之, 三浦誠一, 野徹雄, 小平秀一, 高橋成実, 篠原雅尚, 山田知朗, 塩原肇, 中東和夫, 植平賢司, 植平賢司, 日野亮太

日本地震学会秋季大会講演予稿集　2012　2012
海底地震計を用いた平成23年東北地方太平洋沖地震の余震観測

篠原雅尚, 山田知朗, 町田祐弥, 中東和夫, 望月公廣, 塩原肇, 一瀬建日, 真保敬, 岩崎貴哉, 小原一成, 平田直, 村井芳夫, 勝俣啓, 東龍介, 日野亮太, 伊藤喜宏, 鈴木健介, 藤本博己, 木戸元之, 長田幸仁, 佐藤利典, 植平賢司, 八木原寛, 宮町宏樹, 小平秀一, 高橋成実, 尾鼻浩一郎, 金田義行, 平田賢治, 対馬弘晃, 勝間田明男, 横田崇, 山崎明, 小池哲治, 阿部正雄, 平松秀行

日本地震学会秋季大会講演予稿集　2011　67　2011/10/01
海溝付近で発生する浅部ゆっくり地震の特徴

有吉慶介, 堀高峰, 中田令子, 金田義行, Ampuero Jean-Paul, 松澤暢, 日野亮太, 長谷川昭

SENAC : 東北大学大型計算機センター広報　44　(4)　33-46　2011/10
Publisher: 東北大学サイバーサイエンスセンター
ISSN： 0286-7419
東北地方太平洋沖地震の海溝海側余震域における散乱減衰と内部減衰の空間変化

高橋努, 尾鼻浩一郎, 山本揚二朗, 藤江剛, 中村恭之, 高橋成実, 小平秀一, 金田義行, 篠原雅尚, 村井芳夫, 日野亮太, 佐藤利典, 植平賢司, 八木原寛, 平田賢治

日本地震学会秋季大会講演予稿集　2011　165　2011/10/01
2011年3月東北地方太平洋沖地震に伴う海溝海側斜面の余震活動

尾鼻浩一郎, 高橋努, 山本揚二朗, 藤江剛, 中村恭之, 高橋成実, 小平秀一, 金田義行, 篠原雅尚, 村井芳夫, 日野亮太, 佐藤利典, 植平賢司, 八木原寛, 平田賢治

日本地震学会秋季大会講演予稿集　2011　68　2011/10/01
長期海底地震観測から得られた北海道・根室沖の大地震発生域周辺の地震活動とコーダQ^-1

村井芳夫, 日野亮太, 伊藤喜宏, 鈴木秀市, 金田義之

日本地震学会秋季大会講演予稿集　2011　117　2011/10/01
Building a scientific understanding of geohazards: exploratin into catastrophic earthquakes'

Kaiyo monthly　43　(6)　305-313　2011/06
Publisher: 海洋出版
ISSN： 0916-2011
海溝型巨大地震震源域周辺における浅部ゆっくり地震の特徴

有吉慶介, 堀高峰, 中田令子, 金田義行, AMPUERO Jean-Paul, 松澤暢, 日野亮太, 長谷川昭

日本地震学会秋季大会講演予稿集　2011　2011
IODP南海トラフ地震発生帯掘削計画における長距離Walkaway/walkaround VSP調査

真田佳典, 日野亮太, 木下正高, 荒木英一郎, PARK Jin-Oh, 辻健, MOORE Gregory, BANGS Nathan, VON HUENE Roland, 東亘

石油技術協会誌　76　(4)　2011

ISSN： 0370-9868
海底地震計記録を用いた地震波干渉法による2005年宮城県沖地震(Mj7.2)に伴う地震波速度変化の検出

中条恒太, 伊藤喜宏, 中原恒, 日野亮太, 山田知朗, 篠原雅尚, 金沢敏彦

日本地震学会秋季大会講演予稿集　2011　2011
無線ユニットおよびGPS時計を内蔵した海底地震観測用データロガー (平成22年度技術業務報告)

鈴木秀市, 伊藤喜宏, 日野亮太

東京大学地震研究所技術研究報告　(17)　130-132　2011
Publisher: 東京大学地震研究所
ISSN： 1342-6486
海底地震計観測網による2011年東北地方太平洋沖地震の余震活動

篠原雅尚, 山田知朗, 町田祐弥, 中東和夫, 望月公廣, 塩原肇, 一瀬建日, 真保敬, 岩崎貴哉, 小原一成, 平田直, 村井芳夫, 勝俣啓, 東龍介, 日野亮太, 伊藤喜宏, 鈴木健介, 藤本博己, 木戸元之, 長田幸仁, 佐藤利典, 植平賢司, 八木原寛, 宮町宏樹, 小平秀一, 高橋成実, 尾鼻浩一郎, 金田義行, 平田賢治, 対馬弘晃, 勝間田明男, 横田崇, 山崎明, 小池哲司, 阿部正雄, 平松秀行

海洋調査技術学会研究成果発表会講演要旨集　23rd　38-39　2011
房総半島沖海溝会合部東側における海底地震観測

山田知朗, 望月公廣, 篠原雅尚, 町田裕弥, 真保敬, 中東和夫, 植平賢司, 佐藤利典, 日野亮太, 村井芳夫

海洋調査技術学会研究成果発表会講演要旨集　23rd　49　2011
茨城・房総半島沖におけるエアガン・ダイナマイトを震源とした地殻構造探査

中東和夫, 山田知朗, 望月公廣, 篠原雅尚, 金沢敏彦, 村井芳夫, 高波鐵夫, 伊藤喜宏, 日野亮太, 佐藤利典, 植平賢司

海洋調査技術学会研究成果発表会講演要旨集　23rd　37　2011
Long offset VSP survey in Nankai Trough offshore Kumanonada

SANADA Yoshinori, HINO Ryota, PARK Jin-Oh, KINOSHITA Masataka, NanTroSEIZE VSP team, IODP Exp 319 on-board Scientists

122　87-90　2010/05/31
鉛直地震探査(VSP)による熊野海盆の地震波速度異方性と応力場

日野亮太, 山本清彦, 辻健, 真田佳典, PARK J.-O., 野哲郎, 荒木英一郎, 木下正高, BANGS Nathan, VON HUENE Roland, MOORE Gregory

日本地震学会秋季大会講演予稿集　2010　2010
宮城県沖における応力場とプレート間固着強度の関係

鈴木健介, 日野亮太, 伊藤喜宏, 金沢敏彦, 山田知朗, 篠原雅尚, 植平賢司, 山本揚二朗, 金田義行

日本地震学会秋季大会講演予稿集　2010　2010
海溝型巨大地震の発生前に期待される，ゆっくり地震の活動変化

有吉慶介, 堀高峰, 金田義行, Ampuero Jean-Paul, 松澤暢, 日野亮太, 長谷川昭

SENAC : 東北大学大型計算機センター広報　43　(1)　19-24　2010/01
Publisher: 東北大学サイバーサイエンスセンター
ISSN： 0286-7419
2003年十勝沖地震における破壊域と地震波速度構造

町田祐弥, 高波鐵夫, 村井芳夫, 篠原雅尚, 中東和夫, 桑野亜佐子, 山田知朗, 望月公廣, 金沢敏彦, 東龍介, 日野亮太

日本地震学会秋季大会講演予稿集　2009　208　2009/10/01
長期観測型海底地震計ネットワークによる日本・千島海溝会合部における微小地震活動

桑野亜佐子, 篠原雅尚, 山田知朗, 望月公廣, 中東和夫, 町田祐弥, 酒井慎一, 金沢敏彦, 雨宮晋一郎, 村井芳夫, 高波鐵夫, 東龍介, 日野亮太

日本地震学会秋季大会講演予稿集　2009　276　2009/10/01
房総半島沖の地震波速度構造

中東和夫, 新井隆太, 真保敬, 桑野亜佐子, 山田知朗, 望月公廣, 篠原雅尚, 酒井慎一, 金沢敏彦, 八木健夫, 橋本信一, 一條和宏, 三浦亮, 雨宮晋一郎, 村井芳夫, 高波鐵夫, 鈴木健介, 東龍介, 山本揚二朗, 伊藤喜宏, 日野亮太, 水上遥, 水野真理子, 佐藤利典, 山下祐亮, 植平賢司

日本地震学会秋季大会講演予稿集　2009　212　2009/10/01
長期観測型海底地震計による千島海溝・日本海溝沿いのアスペリティ周辺の地震活動調査

高波鐵夫, 村井芳夫, 雨宮晋一郎, 町田祐弥, 三浦亮, 一條和宏, 金沢敏彦, 篠原雅尚, 山田知朗, 望月公博, 酒井慎一, 中東和夫, 桑野亜佐子, 八木健夫, 橋本信一, 長谷川昭, 日野亮太, 東龍介

日本地震学会秋季大会講演予稿集　2009　66　2009/10/01
連鎖反応モデルから想定される深部低周波微動の特徴

有吉慶介, 堀高峰, Jean-Paul Ampuero, 松澤暢, 日野亮太, 長谷川昭

SENAC　42　(2)　19-25　2009/04
Publisher: 東北大学サイバーサイエンスセンター
ISSN： 0286-7419
沈み込みプレート境界型巨大地震に先行する深部での微動活動変化の特徴

有吉慶介, 堀高峰, 中田令子, 金田義行, AMPUERO Jean-Paul, 松澤暢, 日野亮太, 長谷川昭

日本地震学会秋季大会講演予稿集　2009　2009
海底地震計記録を用いた地震波干渉法による日本海溝陸側斜面下の不均質構造推定の試み

伊藤喜宏, 日野亮太, 鈴木秀市, 山田知朗, 篠原雅尚, 金沢敏彦

日本地震学会秋季大会講演予稿集　2009　2009
2005年宮城県沖の地震(M7.2)による応力変化と宮城県沖の応力場の推定

鈴木健介, 日野亮太, 伊藤喜宏, 金沢敏彦, 山田知朗, 篠原雅尚, 植平賢司, 山本揚二朗, 金田義行

日本地震学会秋季大会講演予稿集　2009　2009
東南海地震震源域の深海掘削孔を用いた鉛直地震探査 (VSP)

日野亮太

日本地震学会2009年秋季大会予稿集　2009
南海トラフ地震発生帯における「ちきゅう」と「かいれい」を用いた長距離VSP探査

日野亮太

ブルーアースシンポジウム予稿集, 2009　2009
海底掘削孔内に設置した高感度傾斜計によるプレート間滑りの検出

荒木英一郎, 藤本博巳, 日野亮太, 金澤敏彦, 篠原雅尚, 金田義行, 末広潔, 有吉慶介, 杉岡裕子, 松本浩幸, 伊藤亜妃, SACKS Selwyn, LINDE Alan

Blue Earth要旨集　2009　2009
Precise aftershock distribution of the 2007 Chuetsu-oki Earthquake obtained by using an ocean bottom seismometer network

SHINOHARA Masanao, KANAZAWA Toshihiko, YAMADA Tomoaki, NAKAHIGASHI Kazuo, SAKAI Shin'ichi, HINO Ryota, MURAI Yoshi, YAMAZAKI Akira, OBANA Koichiro, ITO Yoshihiro, IWAKIRI Kazuhiro, MIURA Ryo, MACHIDA Yuya, MOCHIZUKI Kimihiro, UEHIRA Kenji, TAHARA Michitaka, KUWANO Asako, AMAMIYA Shin'ichiro, KODAIRA Shuichi, TAKANAMI Tetsuo, KANEDA Yoshiyuki, IWASAKI Takaya

EPS　60　(11)　1121-1126　2008/11/01
Publisher: Terra Scientific Pub. Co.
ISSN： 1343-8832
Geometry of plate boundary around Japan-Kuril Trench junction derived from 3D seismic tomography by using LT OBS network

KUWANO Asako, SHINOHARA Masanao, YAMADA Tomoaki, MOCHIZUKI Kimihiro, NAKAHIGASHI Kazuo, HASHIMOTO Shinichi, YAGI Takeo, KANAZAWA Toshihiko, AZUMA Ryosuke, HINO Ryota, MACHIDA Yuya, AMAMIYA Shinichiro, MIURA Ryo, MURAI Yoshio, TAKANAMI Tetsuo

日本地震学会秋季大会講演予稿集　2008　262　2008/11/01
P-53 Seismic, geodetic and cold-seepage observations for detection of slow earthquakes on landward slope of Japan Trench

Ito Y., Fujimoto H., Hino R., Kido M., Osada Y., Suzuki S., Yamamoto Y., Azuma R., Suzuki K., Tsuji T., Nakayama N., Ashi J., Gamo T.

115　198-198　2008/09/15
Publisher: The Geological Society of Japan
平成19年新潟県中越沖地震に関する緊急調査研究:KR07-E01の成果

尾鼻浩一郎, 野徹雄, 高橋成実, 小平秀一, 金田義行, 篠原雅尚, 金沢敏彦, 山田知朗, 中東和夫, 岩崎貴哉, 日野亮太, 伊藤喜宏, 高波鐵夫, 三浦亮, 山崎明, 植平賢司

しんかいシンポジウム予稿集　24th　2008
制御震源と海底地震計・陸上臨時観測点を用いた茨城県沖沈み込み帯の地震波構造探査実験

大久保忠博, 篠原雅尚, 望月公廣, 山田知朗, 中東和夫, 桑野亜佐子, 酒井慎一, 金沢敏彦, 萩原弘子, 蔵下英司, 岩崎貴哉, 高波鐵夫, 村井芳夫, 町田祐, 山本揚二朗, 東龍介, 鈴木健介, 日野亮太, 佐藤利典, 樋口春隆, 植平賢司, 八木健夫, 橋本信一, 羽田敏夫, 平田安廣, 渡辺茂, 坂守, 芹沢正人, 田上貴代子, 三浦禮子

日本地震学会秋季大会講演予稿集　2007　103　2007/10/01
長期観測型海底地震計ネットワークによる日本・千島海溝会合部における微小地震観測

桑野亜佐子, 篠原雅尚, 山田知朗, 望月公廣, 中東和夫, 酒井慎一, 橋本信一, 八木健夫, 金沢敏彦, 東龍介, 日野亮太, 町田祐弥, 雨宮晋一郎, 三浦亮, 村井芳夫, 高波鐵夫

日本地震学会秋季大会講演予稿集　2007　248　2007/10/01
海底地震計を用いた2007年新潟県中越沖地震の余震観測

篠原雅尚, 金沢敏彦, 山田知朗, 望月公廣, 中東和夫, 桑野亜佐子, 橋本信一, 八木健夫, 村井芳夫, 町田祐弥, 三浦亮, 雨宮晋一郎, 高波鐵夫, 日野亮太, 伊藤喜宏, 植平賢司, 内田和也, 田原道崇, 尾鼻浩一郎, 小平秀一, 金田義行, 山崎明, 岩切一宏

日本地震学会秋季大会講演予稿集　2007　177　2007/10/01
2007年新潟県中越沖地震の余震活動と本震震源断層

平田直, 佐藤比呂志, 金沢敏彦, 酒井慎一, 岩崎貴哉, 篠原雅尚, 望月公廣, 山田知朗, 高波鐵夫, 村井芳夫, 日野亮太, 伊藤喜宏, 植平賢司, 小平秀一, 山崎明

日本地震学会秋季大会講演予稿集　2007　5　2007/10/01
海底地震計を用いた制御震源地震探査による千島海溝南部における地震波速度構造

町田祐弥, 高波鐵夫, 村井芳夫, 雨宮晋一郎, 西村裕一, 篠原雅尚, 望月公廣, 山田知朗, 中東和夫, 桑野亜佐子, 金沢敏彦, 日野亮太, 東龍介

日本地震学会秋季大会講演予稿集　2007　263　2007/10/01
日本海溝・千島海溝会合部における地殻構造探査

中東和夫, 桑野亜佐子, 山田知朗, 望月公廣, 篠原雅尚, 酒井慎一, 八木健夫, 橋本信一, 金沢敏彦, 町田祐弥, 三浦亮, 雨宮晋一郎, 村井芳夫, 高波鐵夫, 東龍介, 日野亮太

日本地震学会秋季大会講演予稿集　2007　263　2007/10/01
Slip Distribution Estimated from Tsunami Waveforms for the 2005 Miyagi-oki Earthquake Occurred on August 16

TANIOKA Yuichiro, HINO Ryota, HASEGAWA Yohei

Zisin : Journal of the Seismological Society of Japan　59　(4)　385-387　2007/03/25
Publisher: SEISMOLOGICAL SOCIETY OF JAPAN
DOI： 10.4294/zisin.59.385 　

ISSN： 0037-1114 1883-9029 2186-599X
宮城県沖地震を想定した連動破壊現象の可能性の検討

有吉慶介, 松澤暢, 日野亮太, 長谷川昭

SENAC　40　2007/03
相似地震活動と震源の深さとの関係

有吉慶介, 堀高峰, 金田義行, 松澤暢, 日野亮太, 長谷川昭

日本地震学会秋季大会講演予稿集　2007　2007
宮城県沖および福島県沖前弧域の地震学的構造

山本揚二朗, 日野亮太, 鈴木健介, 伊藤喜宏, 山田知朗, 篠原雅尚, 金沢敏彦, 田中昌之, 金田義行, 植平賢司

日本地震学会秋季大会講演予稿集　2007　2007
長期海底地震観測による三陸沖北部の地震活動

山田知朗, 中東和夫, 望月公廣, 桑野亜佐子, 山下幹也, 酒井慎一, 篠原雅尚, 金沢敏彦, 高波鐵夫, 村井芳夫, 雨宮晋一郎, 日野亮太, 山本揚二朗, 佐藤利典, 丸山友章

日本地震学会秋季大会講演予稿集　2006　258　2006/10/01
2003年十勝沖地震震源域から1973年根室半島沖地震震源域にかけての千島海溝における地殻構造

東龍介, 高波鐵夫, 村井芳夫, 町田祐弥, 牧野由美, 齊藤市輔, 日野亮太, 対馬弘晃, 金沢敏彦, 篠原雅尚, 望月公廣, 山田知朗, 佐藤利典, 丸山友章

日本地震学会秋季大会講演予稿集　2006　99　2006/10/01
アスペリティ間の相互作用における摩擦特性の影響

有吉慶介, 松澤暢, 日野亮太, 長谷川昭

日本地震学会秋季大会講演予稿集　2006　2006
Double-Difference Tomography法による宮城県沖地震震源域の地震波速度構造

山本揚二朗, 日野亮太, 鈴木健介, 山田知朗, 篠原雅尚, 金沢敏彦, 青木元, 田中昌之, 金田義行

日本地震学会秋季大会講演予稿集　2006　2006
海底地震計による観測データを使用した日向灘域の地震波速度構造

田原道崇, 中田正夫, 植平賢司, 清水洋, 山田知朗, 望月公廣, 篠原雅尚, 西野実, 日野亮太, 八木原寛, 宮町宏樹, 馬越孝道, 合田政次, 松尾のり道, 金沢敏彦

日本地震学会秋季大会講演予稿集　2006　2006
海底地震計を用いた海底下深部構造探査―海溝型大地震発生域の地震波トモグラフィ―

日野亮太

超音波TECNO　19　103-109　2006
宮城県沖地震の震源域と地殻構造~2004年エアガン・OBS構造探査~

藤江剛, 三浦誠一, 小平秀一, 金田義行, 伊藤亜妃, 篠原雅尚, 望月公広, 山田知朗, 渡辺いずみ, 金沢敏彦, 日野亮太, 西野実, 桑野亜佐子, 山本揚二朗, 村井芳夫, 斎藤市輔, 町田祐弥, 牧野由美, 高波鉄夫, 石村千晴, 太田雄介, 友田博之, 佐藤利典, 植平賢司

日本地震学会秋季大会講演予稿集　2005　24　2005/10/01
宮城沖地震想定震源域付近における爆破を震源とした海陸地震波構造探査

渡辺いづみ, 篠原雅尚, 望月公広, 山田知朗, 中東和夫, 金沢敏彦, 蔵下英司, 加藤愛太郎, 飯高隆, 平田直, 岩崎貴哉, 日野亮太, 西野実, 桑野亜佐子, 山本揚二郎, 高波鉄夫, 村井芳夫, 町田祐弥, 牧野由美, 斉藤市輔, 東龍介, 佐藤利典, 植平賢司, 三浦誠一, 藤江剛, 金田義行

日本地震学会秋季大会講演予稿集　2005　25　2005/10/01
2003年十勝沖地震アスペリティ周辺の速度構造

町田祐弥, 高波鉄夫, 村井芳夫, 篠原雅尚, 山田知朗, 金沢敏彦, 平田直, 酒井慎一, 望月公広, 塩原肇, 西野実, 日野亮太, 植平賢司, 清水洋, 金田義行, 末広潔, 渡辺智毅, 高橋成実, 佐藤壮, 荒木英一郎, 三ケ田均, 宇平幸一

日本地震学会秋季大会講演予稿集　2005　195　2005/10/01
2003年十勝沖地震震源域付近の地震波速度構造探査

牧野由美, 高波鉄夫, 村井芳夫, 斉藤市輔, 町田祐弥, 西野実, 日野亮太, 山田知朗, 金沢敏彦, 植平賢司, 宮町宏樹, 平野舟一郎

日本地震学会秋季大会講演予稿集　2005　57　2005/10/01
2004年紀伊半島南東沖の地震の余震に関する調査研究

金沢敏彦, 金田義行, 高波鉄夫, 清水洋, 日野亮太, 篠原雅尚, 酒井慎一, 村井芳夫, 望月公広, 山田知朗, 植平賢司, 西野実

自然災害科学総合シンポジウム要旨集　42nd　32-51　2005/09/17
繰り返す大地震発生のしくみ (特集=日本の地震メカニズムが見えてきた--日本列島の地下構造の解析)

日野亮太, 鶴哲郎

科学　75　(8)　940-947　2005/08
Publisher: 岩波書店
ISSN： 0022-7625
海底地殻変動観測による沈み込み運動の現場観測

藤本博巳, 三浦哲, 日野亮太, 木戸元之, 長田幸仁

月刊地球　51　(号外)　188-192　2005/04
Publisher: 海洋出版
ISSN： 0916-9733
海底地震観測による福島沖プレート境界の地震活動 (沈み込み帯の科学と海洋観測技術) -- (1章沈み込み帯の地球科学(地球物理))

篠原雅尚, 日野亮太, 吉沢隆史

号外地球　(51)　60-65　2005
Publisher: 海洋出版
ISSN： 0916-9733
三陸沖におけるプレート境界微小地震の震源分布と反射法地震探査イメージ (沈み込み帯の科学と海洋観測技術) -- (1章沈み込み帯の地球科学(地球物理))

日野亮太

号外地球　(51)　43-48　2005
Publisher: 海洋出版
ISSN： 0916-9733
三陸沖光ケーブル式海底地震・津波観測システムによる津波観測

日野亮太, 藤本博巳, 桑野亜佐子, 西野実, 金沢敏彦, 酒井慎一, 中尾茂

月刊地球　27　(3)　190-196　2005
Publisher: 海洋出版
ISSN： 0387-3498
Detailed Slip Distribution of the 2003 Tokachi-oki Earthquake Estimated from Tsunami Waveforms

TANIOKA Yuichiro, HIRATA Kenji, HINO Ryota, KANAZAWA Toshihiko

Zisin : Journal of the Seismological Society of Japan　57　(2)　75-81　2004/12/27
Publisher: 日本地震学会
DOI： 10.4294/zisin1948.57.2_75 　

ISSN： 0037-1114
測地学における海底ケーブルの科学的利用

藤本博巳, 日野亮太, 金沢敏彦

月刊地球　26　(5)　240-248　2004
Preface to Special Issue on "Seismogenic Zone Drilling for Earthquake Generation Process"

Ito Hisao, Hino Ryota, Shinohara Masanao, Kato Aitaro

78　(1)　58-58　2003
Publisher: 東京大学地震研究所
ISSN： 0040-8972
地球内部構造-地震学的アプローチ-長期広帯域海底地震観測網データのレシーバー関数解析によるフィリピン海マントル不連続面の深さ推定

末次大輔, 塩原肇, 杉岡裕子, 小平秀一, 深尾良夫, 望月公広, 金沢敏彦, 日野亮太, 斉田智治

月刊地球　25　(7)　2003

ISSN： 0387-3498
フィリピン海マントル遷移層における温度と含水量の推定

末次大輔, 塩原肇, 井上徹, 杉岡裕子, 深尾良夫, 望月公広, 金沢敏彦, 日野亮太, 斉田智治

日本地震学会秋季大会講演予稿集　2003　2003
フィリピン海のレイリー波位相速度の地域性

一瀬建日, 中村恭之, 塩原肇, 深尾良夫, 望月公広, 金沢敏彦, 杉岡裕子, 日野亮太, 末次大輔

日本地震学会秋季大会講演予稿集　2003　2003
地球内部構造-地震学的アプローチ-広帯域海底地震計アレーを用いたフィリピン海北部のレイリー波位相速度構造

一瀬建日, 塩原肇, 深尾良夫, 望月公広, 金沢敏彦, 杉岡裕子, 小平秀一, 日野亮太, 末次大輔

月刊地球　25　(7)　2003

ISSN： 0387-3498
Long-Term Monitoring Using Deep Seafloor Boreholes Penetrating the Seismogenic Zone

篠原雅尚, 荒木英一郎, 鎌田正博, 木下正高, 許正憲, 黒木一志, 小菅儀紀, 小林照明, 今野淳, 後藤忠徳, 斉藤実篤, 鈴木正芳, 高橋亨, 田所敬一, 角皆潤, 手塚和彦, 難波謙二, 西将利, 日野亮太, 三ヶ田均, 森田信男, 吉田恒夫, 伊藤久男

東京大學地震研究所彙報 = Bulletin of the Earthquake Research Institute, University of Tokyo　78　(2)　205-218　2003
Publisher: 東京大学地震研究所
ISSN： 0040-8972

More details Close

Large earthquakes occur frequently in subduction zones. Most earthquakes are generated in the seismogenic zone, a fairly limited area confined to the shallower regions of the subduction plate boundary. To understand the processes of earthquake generation, it is essential to monitor the physical and mechanical properties of the seismogenic zone over long periods. At present, there are no deep borehole observations of the seismogenic zone more than 3km below seafloor, because it has, until now, been impossible to penetrate to such depths below the sea floor. The Integrated Ocean Drilling Program (IODP), scheduled to begin in 2003, plans to drill boreholes beneath the ocean floor using a multiple-drilling platform operation. The IODP riser-quipped drilling ship (Chikyu) enables the emplacement of boreholes up to 0km beneath the ocean floor, and will provide opportunities to conduct long-term deep borehole observations in the seismogenic zone. Long-term borehole observations in the seismogenic zone are expected to require the development of advanced sampling, monitoring, and recording technology. Here, we discuss the scientific objectives, engineering and technical challenges, and experimental design for a deep borehole, long-term deepborehole monitoring system aimed at understanding the processes of earthquake generation in the seismogenic zone of subduction plate boundaries. We focus specifically on the relationships between environmental conditions in the deep subsurface, details of monitoring and recording, and design and implementation of scientific tools and programs.
海陸プレート境界近傍での地震・測地観測のツボ--地震発生帯掘削孔内地震・測地観測の役割 (総特集沈み込み帯地震発生帯--その物質科学と深海掘削) -- (3章沈み込み地震発生帯の物理的描像)

日野亮太

号外地球　(36)　119-124　2002
Publisher: 海洋出版
ISSN： 0916-9733
長期広帯域海底地震観測網データのレシーバー関数解析によるフィリピン海マントル不連続面の深さ推定

末次大輔, 塩原肇, 杉岡裕子, 小平秀一, 深尾良夫, 望月公広, 金沢敏彦, 日野亮太, 斉田嶋治

日本地震学会秋季大会講演予稿集　2002　2002
広帯域海底地震計アレーを用いたフィリピン海北東部のレイリー波速度

一瀬建日, 末次大輔, 塩原肇, 深尾良夫, 望月公広, 金沢敏彦, 杉岡裕子, 小平秀一, 日野亮太

日本地震学会秋季大会講演予稿集　2002　2002
Deep crustal structure of the northeastern Japan forearc by a seismic exploration using an airgun-array

伊藤亜妃, 日野亮太, 西野実, 藤本博巳, 三浦誠一, 小平秀一, 長谷見昌子

Zisin　54　507-520　2002

DOI： 10.4294/zisin1948.54.4_507 　
長期広帯域海底地震観測による深部構造イメージングフィリピン海横断測線と北西太平洋WP-2観測点

塩原肇, 望月将志, 篠原雅尚, 金沢敏彦, 米島慎二, 望月公広, 杉岡裕子, 小平秀一, 日野亮太

日本地震学会秋季大会講演予稿集　2001　2001
Seismic structure and interplate seismicity of the Japan Trench subduction zone by ocean bottom seismographic studies

Hino, R, M. Nishino, H. Fujimoto

Tohoku Geophys　36　(2)　257-259　2001
Publisher: Faculty of Science, Tohoku University
ISSN： 0040-8794
1993年北海道南西沖地震の震源域でのP波速度トモグラフィ

高波鉄夫, 村井芳夫, 島村英紀, 日野亮太, 金沢敏彦, 末広潔, 篠原雅尚, 佐藤利典, 根岸弘明

日本地震学会秋季大会講演予稿集　2000　15　2000/11/09
海底地震観測による日本海溝沈み込み帯におけるプレート境界地震活動と地殻構造

日野亮太

日本地震学会2000年度秋期大会講演予稿集　2000
フィリピン海横断測線での長期海底地震観測速報

塩原肇, 加藤護, 望月将志, 金沢敏彦, 米島慎二, 望月公広, 杉岡裕子, 小平秀一, 日野亮太

日本地震学会秋季大会講演予稿集　2000　2000
海底地震探査による三陸沖の地殻構造 (総特集東北日本トランセクト--島弧変形と地殻活動) -- (東北日本の地殻構造)

日野亮太

号外地球　(27)　65-70　1999/12
Publisher: 海洋出版
ISSN： 0916-9733
海底地震計と制御震源を用いた秋田沖日本海東縁部海陸境界域のP波速度構造 (総特集東北日本トランセクト--島弧変形と地殻活動) -- (東北日本の地殻構造)

西坂弘正, 篠原雅尚, 日野亮太

号外地球　(27)　75-82　1999/12
Publisher: 海洋出版
ISSN： 0916-9733
A pop-up type ocean bottom seismograph for long-term observations

HINO R., NISHINO M., ITO A.

1999　(2)　P048　1999/11/09
Seismic observation using ocean bottom seismometers (OBS) in the region west off Koshiki islands, Kagoshima Prefecture

MIZUHARA Kentaro, YAKIWARA Hiroshi, GOTO Kazuhiko, MIYAMACHI Hiroki, HIRANO Shuichiro, KAKUTA Toshiki, TAKANAMI Tetsuo, SHIMAMURA Hideki, HINO Ryota, MOCHIZUKI Masashi, SHIOBARA Hajime, SHINOHARA Masanao, KANAZAWA Toshihiko, UEHIRA Kenji

1999　(2)　P027　1999/11/09
エアガン‐海底地震計による奥尻海嶺北部の地震波速度構造

山品匡史, 村井芳夫, 渡辺智毅, 桑野亜佐子, 秋山諭, 石川春義, 島村英紀, 日野亮太

日本地震学会秋季大会講演予稿集　1999　(2)　176　1999/11/09
日本列島周辺のプレート境界域の地殻構造 (特集日本周辺海域の地質構造マッピング)

日野亮太

地質ニュース　(541)　11-16　1999/09
Publisher: 実業公報社
ISSN： 0009-4854
海底孔内観測ステーション実現に向けて

末広潔, 藤本博巳, 荒木英一郎, 篠原雅尚, 金澤敏彦, SACKS S., LINDE A., 日野亮太

海洋調査技術学会研究成果発表会講演要旨集　10　29-29　1998/11/05
P-wave Velocity Structure of Northeastern Margin of Japan Sea, off-Akita Using Ocean Bottom Seismometers and Controlled Sources

NISHISAKA H., SHINOHARA M., AOYAGI Y., SATO T., MOCHIDA M., HINO R., NISHINO M., KASAHARA J., SATO T., KORESAWA S., FUJIE G., YONESHIMA S., MOCHIZUKI K., SUYEHIRO K.

1998　(2)　1998/10/09
Heterogeneous velocity structure and seismic activity in off-Sanriku Region : Traveltime inversion with reflected waves and its applications.

FUJIE Gou, KASAHARA Junzo, SATO Toshinori, KORESAWA Sadayuki, MOCHIZUKI Kimihiro, ITO Shinobu, HINO Ryota, SHINOHARA Masanao, SUYEHIRO Kiyoshi

1998　(2)　1998/10/09
Heterogeneous velocity structure of off Sanriku, the Northeastern Japan forearc using Airgun-Ocean Bottom Seismograph data

TAKAHASHI N., KODAIRA S., TSURU T., PARK J-O, KANEDA Y., KINOSHITA H., NISHINO M., HINO R., ABE S.

1998　(2)　1998/10/09
On M6.3 earthquake off Sanriku on May 31, 1998 (1) Aftershock hypocenter distribution

MATSUZAWA T., HINO R., UMINO N., HASEGAWA A., KANAZAWA T., SAKAI S.

1998　(2)　1998/10/09
On M6.3 earthquake off Sanriku on May 31, 1998 (2) Source process

OKADA Tomomi, MATSUZAWA Toru, HINO Ryota, HASEGAWA Akira, KANAZAWA Toshihiko

1998　(2)　1998/10/09
Seismic Structure of the Plate Boundary Zone off-Fukushima

NISHINO M., HINO R., SUYEHIRO K, KANAZAWA T, SATO T., SHINOHARA M., SHIOBARA H.

1998　(2)　1998/10/09
Crustal structure beneath off-Sanriku region by multi-channel reflection survey

ITO Shinobu, HINO Ryota, HASEGAWA Akira, SHINOHARA Masanao, SUYEHIRO Kiyoshi, FUJIE Gou, KASAHARA Junzo

1998　(2)　1998/10/09
Tsunamis from an off-Sarniku and the Papua New Guinea earthquakes observed by ocean bottom tsunami measurement

HINO R., KANAZAWA T., SAKAI S., TANIOKA Y., SUYEHIRO K.

1998　(2)　1998/10/09
Seismicity off South of the Bougainville Island in the Central Solomon Islands Region by Using Ocean Bottom Seismometers

YONESHIMA S., MOCHIZUKI K., ARAKI E., SUYEHIRO K., AOYAGI Y., NISHISAKA H., SATO T., MUCHIDA M., YOSHIZAWA T., SHINOHARA M., MIURA S., NISHINO M., HINO R.

1998　(2)　1998/10/09
Hypocenter Distribution off Fukushima, Determined by an Ocean Bottom Seismographic Observation

YOSHIZAWA T., SHINOHARA M., AOYAGI Y., NISHINO M., ASANO Y., YABE Y., HINO R., MOCHIZUKI K., SUYEHIRO K., FUJIE G., KORESAWA S., SATO T., SHIOBARA H.

1998　(2)　1998/10/09
Earthquakes with Similar Waveforms off Fukushima as Revealed by Ocean Bottom Seismographic Observation

AOYAGI Y., SHINOHARA M., YOSHIZAWA T., NISHINO M., ASANO Y., YABE Y., HINO R., MOCHIZUKI K., SUYEHIRO K., FUJIE G., KORESAWA S., SATO T., SHIOBARA H.

1998　(2)　1998/10/09
三陸沖地震予知総合観測計画

松澤暢, 日野亮太, 岡田知己, 小菅正裕, 今村文彦

月刊地球, 号外　(20)　85-89　1998/04
Publisher: 海洋出版
ISSN： 0916-9733
Estimation of focal mechanism solutions of earthquakes off Sanriku by using 'master-solution method'

IGARASHI T., MATSUZAWA T., HORIUCHI S., HINO R., HASEGAWA A.

1997　(2)　1997/09/15
Deep crustal structure beneath Off-Sanriku through marine explosions data observed by land short span arrays

ITO S., ONODERA M., NIDA K., KONO T., HASHIMOTO K., HINO R., YAMAMOTO A., HORIUCHI S., HASEGAWA A., NASUNO M., HASEMI A., SHINOHARA M., SAKA M., ICHINOSE Y., IWASAKI T., SATO T., KASAHARA J., KANAZAWA T.

1997　(2)　1997/09/15
海域地殻構造探査

日野亮太

日本地震学会ニュースレター　9　(3)　18-20　1997/09/10

ISSN： 0919-5319
Results of Seismic Observation in collision area where Amami-plateau come into collision with Rykyu-Arc.

山田知朗, 日野亮太, 平野舟一郎, 西沢あずさ, 望月将志, 山品匡史, 野徹雄, 塩原肇, 笠原順三

地球惑星科学関連学会合同大会予稿集　1997　1997
プレート境界地震震源域の地震学的構造--東北日本弧の場合 (総特集 21世紀の深海掘削への展望--ODPからOD21へ) -- (2部 21世紀の深海掘削への展望--OD21)

日野亮太

号外地球　(19)　219-226　1997
Publisher: 海洋出版
ISSN： 0916-9733
Ocean Bottom Seismographic Experiment to Study Crustal Structure in Hyuganada.

市川岳, 白銀哲雄, 仲西理子, 塩原肇, 島村英紀, 日野亮太, 山田知朗, 杉岡裕子, 金沢敏彦

地球惑星科学関連学会合同大会予稿集　1997　1997
Aftershock Activity of the 1995 Amami-Oshima-Kinkai Earthquake

Reports of the Faculty of Science,Kagoshima University. Earth sciences and biology　(29)　113-128　1996/12
Publisher: 鹿児島大学
ISSN： 0385-4019
Seismic Observation near Kikai-jima, May 1996.

山田知朗, 望月将志, 金沢敏彦, 山品匡史, 島村英紀, 日野亮太, 野徹雄, 福満修一郎, 宮町宏樹

日本地震学会秋季大会講演予稿集　1996　1996
Ocean Bottom Seismographic Experiment to Study Crustal Structure in Hyuganada.

市川岳, 白銀哲雄, 仲西理子, 塩原肇, 島村英紀, 日野亮太, 山田知朗, 杉岡裕子, 金沢敏彦

地球惑星科学関連学会合同大会予稿集　1996　1996
Ocean Bottom Seismographic Experiment to Study Crustal Structure in Hyuganada.

市川岳, 白銀哲雄, 仲西理子, 塩原肇, 島村英紀, 日野亮太, 山田知朗, 杉岡裕子, 金沢敏彦

日本地震学会秋季大会講演予稿集　1996　1996
海底地震観測による1994年三陸はるか沖地震の余震分布

日野亮太

文部省科学研究費総合A報告書「1994年三陸はるか沖地震とその被害に関する調査研究」　63-71　1995
Detailed Subduction Structure of the Philippine Sea Plate off Tokai District Deduced by Airgun-Ocean Bottom Seismograph Profiling - Crustal Structure of the Zenisu Ridge and the Eastern Nankai Trough -

NAKANISHI Ayako, SHIOBARA Hajime, HINO Ryota, KODAIRA Shuichi, KANAZAWA Toshihiko, SHIMAMURA Hideki

Zisin : Journal of the Seismological Society of Japan　47　(3)　311-331　1994/10/14
Publisher: 日本地震学会
ISSN： 0037-1114
海底地震計群列による1993年北海道南西沖地震の余震分布「北海道南西沖地震と津波」

日野亮太

月間海洋特集号　35-42　1994
エアガン・ランドエアガンを用いた磐梯山周辺域の地殻構造調査

長谷川昭, 堀内茂木, 植木貞人, 西澤あずさ, 松澤暢, 海野徳仁, 堀修一郎, 河野俊夫, 仁田交市, 橋本恵一, 立花憲司, 稲盛隆穂, 松本聡, 日野亮太, 趙大鵬, 梅津功, 佐藤吉之, 大久保正, 浜口博之, 高木章雄, 田中和夫, 佐藤魂夫, 小菅正裕, 井上純, 長谷見晶子, 鈴木将之, 伊東明彦, 末広潔, 海宝由佳, 桜井浩哲

東北地域災害科学研究　25　75-79　1989/04
41B. Shallow Crustal Structure beneath Bandai Volcano Revealed by Refraction Survey Using Air-Gun as a Seismic Source.(Abstracts of Papers Presented at the Fall Meeting of the Society)

Hasegawa A., Horiuchi S., Ueki S., Nishizawa A., Matsuzawa T., Umino N., Hori S., Kono T., Nida K., Inamori T., Hino R., Matsumoto S., Umetsu I., Hashimoto K., Tachibana K., Zhao T., Sato Y., Okubo T., Hamaguchi H., Takagi A., Sato T., Kosuga M., Inoue J., Tanaka K., Hasemi A., Suzuki M., Ito A., Suyehiro K.

Bulletin of the Volcanological Society of Japan. Second series　33　(4)　350-351　1988/12/28
Publisher: Volcanological Society of Japan
ISSN： 0453-4360

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Books and Other Publications 2

わかる！取り組む！新・災害と防災２津波

今村文彦, 佐藤翔輔, サッパシーアナワット, 日野亮太

2024/02

ISBN: 9784807167005
東日本大震災を分析する１地震・津波のメカニズムと被害の実態

日野亮太

明石書店　2013

Presentations 427

Seafloor Crustal Deformation Observations Utilizing Unmanned Surface Vehicles at Plate Subduction zones around the Japanese Islands

2025/05/29
巨大地震の裏側～巨大化させないメカニズム

日野亮太・内田直希・篠原雅尚・伊藤喜宏・飯沼卓史・中村恭之・金松敏也・池原研・中田令子

日本地球惑星科学連合2025年大会　2025/05/29
Spatiotemporal Evolution of Aseismic Slip Preceding the 2011 Tohoku-Oki Earthquake by Reprocessed OBPR Data

Hirata, K., R. Hino, T. Yamada, K. Minamoto, H. Ohtsuka, Y. Ohta, T. Kubota

2025/05/29
Uncovering mechanism of massive shallow coseismic slip without significant stress drop in 201

2025/05/29
北海道根室沖の前弧構造と沈み込む海洋プレート構造 -稠密OBS探査データの全波形インバージョン解析-

東龍介・藤江剛・日野亮太・小平秀一

日本地球惑星科学連合2025年大会　2025/05/25
Uncovering rupture mechanics and tsunami generation of the Tohoku-Oki earthquake using in-situ seafloor pressure gauges

Kubota, T., T. Saito, R. Hino

2025/05/26
GNSSデータを用いた南海トラフ沿いの長期スロースリップイベントの包括的カタログの作成

髙橋輝起・高木涼太・日野亮太

日本地球惑星科学連合2025年大会　2025/05/26

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本学修士学生
Observed abyssal temperature variability modulated by mesoscale eddies

Shuya, W., Y. Ohta, M. Kido, F. Tomita, R. Hino

2025/05/27
能登半島地震余震に見られる非ダブルカップル成分：初動発震機構解推定に及ぼす影響

悪原岳・篠原雅尚・山田知朗・東龍介・日野亮太・尾鼻浩一郎・高橋努・藤江剛・小平秀一・村井芳夫, 馬塲久紀, 八木原寛, 山下裕亮

日本地球惑星科学連合2025年大会　2025/05/28
Evaluation of vertical oceanic processes affecting seafloor pressure using MRI.COM and DONET observations

Ohtsuka, H. Y. Ohta, W. Shuya, N. Usui, R. Hino

2025/05/28
Repeating earthquake swarms following bursts of shallow tectonic tremor near the Japan Trench, Off Fukushima

Ohyanagi, S., K. Ohta, Y. Ito, R. Hino

2025/05/28
室内実験にもとづくRBR社製海底水圧計の確度および精度の定量評価

鈴木秀市・佐藤真樹子・太田雄策・梶川宏明・小野寺知美・阿部隆行・齋藤一真・藤井登・髙橋直生・日野亮太

日本地球惑星科学連合2025年大会　2025/05/28
日本海溝沿い房総沖におけるGNSS音響結合方式による海底地殻変動観測の開始

富田史章・木戸元之・中東和夫・太田雄策・遠藤神奈多・唐啓賢・日野亮太

日本地球惑星科学連合2025年大会　2025/05/28
室内実験にもとづくA-0-Aを用いた海底水圧計の機器固有ドリフトの除去性能定量評価

萩原拓海・太田雄策・日野亮太・佐藤真樹子・鈴木秀市・梶川宏明

日本地球惑星科学連合2025年大会　2025/05/28

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本学修士学生
Is the small shortening of the baseline length detected by Acoustic Distance Meter significant?

2025/05/28
岩手県沖海溝軸での海底間音響測距データの再解析

三浦達哉・木戸元之・日野亮太

日本地球惑星科学連合2025年大会　2025/05/28

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本学修士学生
Spatial Distribution of Slow and Fast Earthquakes Correlating to the Heterogeneity of Incoming Plate Structure along the Northern Japan Trench

Minamoto, T., R. Hino

2025/05/28
2021･2022年M7福島県沖スラブ内震源域における地震活動の時空間変化

大澤亮・日野亮太・吉田圭佑・大舘未来・太田雄策

日本地球惑星科学連合2025年大会　2025/05/29

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本学修士学生
2021・2022年福島県沖スラブ内地震の余震活動の時空間変化

大澤亮, 吉田圭佑, 日野亮太

日本地球惑星科学連合2024年大会　2024/05

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本学修士学生
Reliable stress-drop estimation of the 2011 Tohoku-oki earthquake using tsunami records just above the large slip area reveals the mechanics of trench-breacing coseismic slip

Kubota, T, T. Satio, R. Hino

American Geophysical Union 2023 Fall Meeting　2023/12/15
Association of regular earthquakes and shallow tectonic tremors in the northern Japan Trench before and after the 2011 Tohoku-oki earthquake

Matsumoto, K, R. Hino, H. Takahashi, S. Ohyanagi, Y. Ito

American Geophysical Union 2023 Fall Meeting　2023/12/14
Precise distribution of tectonic tremors in the nourtehrn Japan Trench by relative hypocenter location using polarization-based arrival time picking

Minamoto, K. R. Hino, K. Matsumoto

American Geophysical Union 2023 Fall Meeting　2023/12/14
Revisiting seafloor pressure records prior to the 2011 Tohoku eqarthquake

Hirata, K, R. Hino, H. Otsuka, Y. Ohta, N. Usui

American Geophysical Union 2023 Fall Meeting　2023/12/14
偏波特性を用いた到達時刻差検測法と相対震源決定による日本海溝北部におけるテクトニック微動分布

源孝祐, 日野亮太, 松本一駿

日本地震学会2023年度秋季大会　2023/11/02

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本学修士学生
2011年東北沖地震前後の日本海溝北部における通常地震と浅部テクトニック微動の連動活動

松本一駿, 日野亮太, 高橋秀暢, 大柳修慧, 篠原雅尚, 伊藤喜宏

日本地震学会2023年度秋季大会　2023/11/02

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本学修士学生
常時微動を用いた日本海溝・千島海溝会合部におけるS波速度構造推定

髙木涼太, 東龍介, 日野亮太, 西田究, 篠原雅尚

日本地震学会2023年度秋季大会　2023/11/01
エアガン海底地震計探査による青森県東方沖の地震波速度構造

石橋環, 中東和夫, 山田知朗, 望月公廣, 村井芳夫, 日野亮太, 東龍介, 佐藤利典, 篠原雅尚

日本地震学会2023年度秋季大会　2023/11/01
17世紀千島海溝地震震源域の地殻構造と浅部大すべりとのかかわり

東龍介, 小平秀一, 日野亮太, 藤江剛, 尾鼻浩一郎, 富田史章, 太田雄策

日本地震学会2023年度秋季大会　2023/11/01
地震波干渉法で検出される海底下構造の時空間変化とその解釈

佐藤豪大, 東龍介, 高木涼太, 日野亮太, 篠原雅尚

日本地震学会2023年度秋季大会　2023/11/01

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本学修士学生
熊野灘におけるテクトニック微動の分布と伝播に見られる特徴：海底臨時観測網およびDONETによる知見

悪原岳, 山下裕亮, 杉岡裕子, Farazi Atikul Haque, 大柳修慧, 伊藤喜宏, 荒木英一郎, 利根川貴志, 辻健, 東龍介, 日野亮太, 望月公廣, 武村俊介, 山田知朗, 篠原雅尚

日本地震学会2023年度秋季大会　2023/11/01
日本海溝・千島海溝沿いにおけるGNSS音響海底測地観測とその成果

富田史章, 木戸元之, 飯沼卓史, 太田雄策, 日野亮太, 大園真子, 高橋浩晃, プラタ-マルティネス, ライムンド, 野徹雄, 中東和夫, 中村恭之

日本地震学会2023年度秋季大会　2023/10/31
2011年東北地震の発生直後に見られた震源直上海底付近の急激な水温上昇について

稲津大祐, 伊藤喜宏, 日野亮太, 谷川亘

日本地震学会2023年度秋季大会　2023/10/31
OBPデータに対するPCA適用によるSSE検出能力の事例研究―ヒクランギ沖，アラスカ半島沖の場合―

大塚英人, 太田雄策, 日野亮太

日本地震学会2023年度秋季大会　2023/10/31

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本学博士学生
IODP Exp. 405 JTRACK：東北沖地震震源断層掘削によるプレート境界断層の強度回復・応力蓄積過程の解明

小平秀一, 氏家恒太郎, 廣瀬丈洋, 林為人, 日野亮太, 中村恭之, 久保田達矢

日本地震学会2023年度秋季大会　2023/10/31
2011年東北沖地震以前の海底水圧データの再解析

平田京輔, 日野亮太, 大塚英人, 太田雄策, 碓氷典久

日本地震学会2023年度秋季大会　2023/10/31

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本学修士学生
Interaction between ordinary earthquakes and shallow tectonic tremors in the northern Japan Trench before and after the 2011 Tohoku-Oki earthquake

2023/05/26
稠密OBS観測から検出された日本海溝―千島海溝会合部における地震学的構造の時間変化と地震活動の関係

佐藤豪大, 東龍介, 高木涼太, 日野亮太, 篠原雅尚

日本地球惑星科学連合2023年大会　2023/05/23

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本学修士学生
海底間音響測距観測による岩手県沖浅部プレート境界のすべり挙動について

西村建, 木戸元之, 日野亮太, 内田直希, 太田雄策, 鈴木秀市, 佐藤真樹子

日本地球惑星科学連合2023年大会　2023/05/23

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本学修士学生
MRI.COM-JPNモデルを用いた日本近海における海底水圧記録の海洋変動低減効果の定量評価

大塚英人, 太田雄策, 碓氷典久, 日野亮太, 久保田達矢

日本地球惑星科学連合2023年大会　2023/05/22

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本学博士学生
重錘形圧力天びんを用いたRBR社製海底水圧計の室内加圧実験および実海域試験による精度評価

鈴木秀市, 佐藤真樹子, 太田雄策, 日野亮太

日本地球惑星科学連合2023年大会　2023/05
Development of long-term drift elimination system of OBP for deep-sea observation by "A-0-A" approach and comparison with DONET in-situ calibration results based on Mobile Pressure Calibrator

2023/05
地殻変動検知に向けたS-net海底水圧データのノイズレベル評価

日野亮太, 久保田達矢, 近貞直孝, 太田雄策, 大塚英人

日本地球惑星科学連合2023年大会　2023/05

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本人
岩手県三陸沖における制御地震DAS・OBS記録を用いた上部地殻のP波速度構造

福島駿, 篠原雅尚, 望月公廣, 山田知朗, 日野亮太, 東龍介, 伊藤喜宏, 山下裕亮

日本地球惑星科学連合2023年大会　2023/05
Seismic structural characteristics illuminating a large shallow slip zone in the 17th-century Kuril earthquake

2023/05
Near-Trench Postseismic Subsidence Following the 2011 Tohoku-oki Earthquake Revealed by GNSS-Acoustic Observations

Tomita, F, Kido, M, Honsho, C, Iinuma, T, Ohta, Y, Hino, R, Sun, T, Luo, H, Wang, K

American Geophysical Union Fall Meeting 2022　2022/12/16
Shallow tectonic tremor activity in the Japan Trench: continuous decay of the activity in 2016 – 2022

Ohyanagi, S, Ohta, K, Ito, Y, Hino, R

American Geophysical Union Fall Meeting 2022　2022/12/15
Recurrence Intervals for M>7 Earthquakes Through a Cycle of M~9 Earthquake in the Middle Segment of the Japan Trench

Nakata, R, Uchida, N, Hori, T, Hino, R

American Geophysical Union Fall Meeting 2022　2022/12/15
Insights into the occurrence and characteristics of near-trench slow slip events at the central Hikurangi subduction zone from a recent seafloor geodetic experiment

Wallace, L, Ito, Y, Palmer, N, Suzuki, S, Hino, R, Williams, C, Mochizuki, K, Yamashita, Y, Warren-Smith, E, Jacobs, K, Savage, M

American Geophysical Union Fall Meeting 2022　2022/12/15
An attempt of transient tectonic signals detection from DONET seafloor pressure record using principal component analysis

Otsuka, H, Ohta, Y, Hino, R, Kubota, T, Inazu, D

American Geophysical Union Fall Meeting 2022　2022/12/14
Swarms of microearthquakes associated with tectonic tremor bursts in the northern Japan Trench

Matsumoto, K, Hino, R, Takahashi, H, Shinohara, M

American Geophysical Union Fall Meeting 2022　2022/12/14
Spatio-temporal seismic velocity variation near the junction between Japan and Kuril trenches revealed from long-term dense-OBS network observation

Sato, T, Azuma, R, Takagi, R, Hino, R, Shinohara, M

American Geophysical Union Fall Meeting 2022　2022/12/14
日本海溝北部におけるテクトニック微動活動域周辺の微小通常地震

松本一駿, 日野亮太, 高橋秀暢, 篠原雅尚

日本地震学会秋季大会　2022/10/24

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広帯域海底地震計とF-netによる北海道襟裳岬沖の浅部VLFE観測

東龍介, 高木涼太, 馬場慧, 日野亮太, 篠原雅尚

日本地震学会秋季大会　2022/10/24
稠密OBSアレイ観測から検出された日本海溝―千島海溝会合部における地震波速度の時間変化

佐藤豪大, 東龍介, 高木涼太, 日野亮太, 篠原雅尚

日本地震学会秋季大会　2022/10/24
千島海溝沿い根室沖における海底測地観測

富田史章, 木戸元之, 太田雄策, 日野亮太, 飯沼卓史, 本荘千枝, 大園真子, 高橋浩晃

日本地震学会秋季大会　2022/10/24
PCA-based noise reduction of seafloor pressure data to improve tectonic transient signal detection -Application to DONET long-term continuous data

2022/05/24
日本海溝―千島海溝会合部OBS観測網記録の地震波干渉法解析による地震波速度変化検出の試み

佐藤豪大, 東龍介, 高木涼太, 日野亮太, 篠原雅尚

日本地球惑星科学連合2022年大会　2022/06/01

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本学修士学生
日本海溝沿いの浅部プレート境界で発生する津波地震の連動性について

中田令子, 日野亮太

日本地球惑星科学連合2022年大会　2022/05/31
海底間音響測距による三陸沖海溝軸の挙動の測定

西村建, 木戸元之, 日野亮太

日本地球惑星科学連合2022年大会　2022/05/27
東北沖地震の後に見られた海底近傍の水温の急上昇について

稲津大祐, 伊藤喜宏, 日野亮太, 谷川亘

日本地球惑星科学連合2022年大会　2022/05/27
Microseismicity associating tectonic tremor bursts in the northern Japan Trench International-presentation

2022/05/26
Long-term tectonic tremor activity around the afterslip area of the 2003 Tokachi-oki earthquake International-presentation

Japan Geoscience Union Meeting 2022　2022/05/26
東北沖における近年のGNSS音響海底測地観測とその成果

富田史章, 木戸元之, 飯沼卓史, 太田雄策, 本荘千枝, 日野亮太, 野徹雄, 中東和夫

日本地球惑星科学連合2022年大会　2022/05/24
Development of the prototype system for the long-term OBP drift elimination using the “A-0-A” approach

Ohta, Y, R. Hino, M. Sato, S. Suzuki, H. Otsuka, H. Kajikawa, T. Kobata

Ocean Science Meting 2022　2022/03
Water depth dependence of nontidal variations from seafloor pressure in New Zealand

Inoue, T, L. Wallace, Y. Yoshikawa, D. Inazu, E. S. Garcia, T. Muramoto, S. Webb, K. Ohta, S. Suzuki, R. Hino

Ocean Science Meting 2022　2022/03
Assessment of non-tidal oceanographic component contributions to OBP time series in DONET, southwest margin of Japan

Ohtsuka, H, Y. Ohta, R. Hino, T. Kubota, D. Inazu

Ocean Science Meting 2022　2022/03
Noise level of S-net seafloor pressure records in geodetic frequency band

Hino, R, T. Kubota, N. Chikasada, Y. Ohta, H. Otsuka

Ocean Science Meting 2022　2022/03
GNSS-Acoustic observation using the Wave Glider to detect the seafloor crustal deformation off the Pacific coast of Northeastern Japan

Iinuma, T, Kido, M, Fukuda, T, Tomita, F, Ohta, Y, Honsho, C, Hino, R

AGU Fall Meeting 2021　2021/12
Episodic burst of earthquakes near the Japan Trench following migration of shallow tectonic tremor

Ohyanagi, S. K. Ohta, Y. Ito, R. Hino, Y. Ohta, R. Azuma, K. Mochizuki, T. Sato, Y. Murai

AGU Fall Meeting 2021　2021/12
Detecting short-term slow slip events using six-year records of ocean bottom pressure in the Hikurangi subduction zone offshore New Zealand

T. Inoue, Y. Ito, L. M. Wallace, T. Nishimura, S. C. Webb, E. S. Garcia, T. Muramoto, S. Suzuki, R. Hino

AGU Fall Meeting 2021　2021/12
広帯域海底地震計とS-netで捉えられた日本・千島海溝会合部に沈み込む海山近傍の地震活動

東龍介, 川久保晋, 高橋秀暢, 太田雄策, 高木涼太, 鈴木秀市, 佐藤真樹子, 日野亮太, 田中伸一, 篠原雅尚

日本地震学会 2021 年度秋季大会　2021/10
海底余震観測記録の再解析による2003年十勝沖地震 (M8.0) 直後の低周波微動活動

川久保晋, 東龍介, 日野亮太, 高橋秀暢, 太田和晃, 篠原雅尚

日本地震学会 2021 年度秋季大会　2021/10
海陸測地観測データにもとづく2011年東北地方太平洋沖地震直後の余効すべりの時空間的特徴

Maulira Putra, 太田雄策, 日野亮太, 飯沼卓史, 縣亮一郎

日本地震学会 2021 年度秋季大会　2021/05
広帯域海底地震観測で捉えた北海道襟裳沖に沈み込んだ海山周辺の地震活動

東龍介, 川久保晋, 高橋秀暢, 日野亮太, 太田雄策, 高木涼太, 鈴木秀市, 佐藤真樹子, 田中伸一, 篠原雅尚

日本地球惑星科学連合2021年大会　2021/05
Development of microseismicity catalog near the Japan Trench shallow slow earthquake region using a deep learning module

2021/05
Real-time Tsunami Inundation Forecast in Japan - Present and Future

2021/05
Precise aftershock distribution of the 2019 off-Yamagata earthquake using anchored-buoy type ocean bottom seismometers

2021/05
海底動的圧力変動成分記録から抽出した2011年東北沖地震の震源域内部の大振幅地震動波形

久保田達矢, 齊藤竜彦, 対馬弘晃, 日野亮太, 太田雄策, 鈴木秀市, 稲津大祐

日本地球惑星科学連合2021年大会　2021/05
OBS/MCS探査が明らかにした北海道下に沈み込む太平洋プレートの構造変化とその解釈

東龍介, 小平秀一, 日野亮太, 藤江剛, 尾鼻浩一郎, 富田史章, 太田雄策

日本地球惑星科学連合2021年大会　2021/05
波形情報に基づく微動判定により見えた2006?2007年の北海道襟裳沖における低周波微動・通常地震活動

川久保晋, 東龍介, 日野亮太, 高橋秀暢, 太田和晃, 篠原雅尚

日本地球惑星科学連合2021年大会　2021/05
DONET海底水圧計データに記録される水圧の水深依存性および年周変化の特性

大塚英人, 太田雄策, 日野亮太, 久保田達矢, 稲津大祐

日本地球惑星科学連合2021年大会　2021/05
2011年東北地方太平洋沖地震後の海底上下動分布と三陸沖海溝軸近傍の隆起傾向

本荘千枝, 木戸元之, 富田史章, 日野亮太

日本地球惑星科学連合2021年大会　2021/05
2011年東北地方太平洋沖地震新毛に気周辺の本震前微小地震活動

後藤博文, 日野亮太

日本地球惑星科学連合2021年大会　2021/05
S-net水圧計による非定常海底上下変動の検知能力の評価

日野亮太, 久保田達矢, 近貞直孝, 太田雄策, 大塚英人

日本地球惑星科学連合2021年大会　2021/05
2011年東北沖地方太平洋沖地震発生以前の日本海溝低周波微動の活動様式

高橋秀暢, 日野亮太, 内田直希, 東龍介, 川久保晋, 太田和晃, 篠原雅尚

日本地球惑星科学連合2021年大会　2021/05
2011年東北沖地震に伴う地震時すべり分布の解像度向上と不確定性の評価

富田史章, 飯沼卓史, 木戸元之, 日野亮太, 太田雄策, 縣亮一郎, 堀高峰, 内田直希

日本地球惑星科学連合2021年大会　2021/05
青森県東方沖における将来の地震発生に備えた海底地殻変動の緊急観測と海底地震計の設置

堀高峰, 飯沼卓史, 富田史章, 木戸元之, 本荘千枝, 東龍介, 唐啓賢, 太田雄策, 中田令子, 日野亮太, 篠原雅尚, 小平秀一

日本地球惑星科学連合2021年大会　2021/05
GNSS-A観測に基づく千島海溝根室沖における海底地殻変動の予備的結果

太田雄策, 木戸元之, 本荘千枝, 木村友季保, 佐藤真樹子, 鈴木秀市, 東龍介, 大園真子, 青田裕樹, 高橋浩晃, 富田史章, 飯沼卓史, 篠原雅尚, 日野亮太

日本地球惑星科学連合2021年大会　2021/05
Investigation of the deeper structure below the ocean floor using ambient noise H/V analysis: application to OBS data at the Fukushima forearc region

Farazi, A.H, Y. Ito、E, S. M. Garcia, A. M. Lontsi, F. J, S?nchez-Sesma, S. Ohyanagi, R. Hino, M. Shinohara

2021/05
Detecting short-term slow slip events using six-year records of ocean bottom pressure in Hikurangi subduction zone offshore New Zealand

Inoue, T, Y. Ito, L. Wallace, T. Nishimura, S. Webb, E. S. Garcia, T. Muramoto, S. Suzuki, R. Hino

2021/05
日本海溝における地震発生サイクルの数値シミュレーション

中田令子, 堀高峰, 三浦誠一, 日野亮太

日本地球惑星科学連合2021年大会　2021/05
Crustal structure of the incoming Pacific Plate off Hokkaido, the southern Kuril Trench subduction zone, by an active-source seismic survey using dense linear OBS array

Ryosuke Azuma, Shuichi Kodaira, Ryota Hino, Gou Fujie, Koichiro Obana, Fumiaki Tomita, Yusaku Ohta

AGU Fall Meeting 2020　2020/12
Water depth dependence of nontidal variations from seafloor pressure in New Zealand

Tomohiro Inoue, Yoshihiro Ito, Laura M Wallace, Yutaka Yoshikawa, Daisuke Inazu, Emmanuel Garcia, Tomoya Muramoto, Kazuaki Ohta, Syuichi Suzuki, Ryota Hino, Spahr C Webb

AGU Fall Meeting 2020　2020/12
The ability of the non-tidal oceanographic model for the ocean bottom pressure time series in the dense observation networks around Japan: towad understanding the transient crustal deformation

Hideto Otsuka, Yusaku Ohta, Ryota Hino, Tatsuya Kubota, Daisuke Inazu

AGU Fall Meeting 2020　2020/12
Low-frequency tremor activity along northern Japan Trench before the 2011 Tohoku-Oki earthquake

Hidenobu Takahashi, Ryota Hino, Naoki Uchida, Kazuaki Ohta, Masanao Shinohara

AGU Fall Meeting 2020　2020/12
Updip Migration of Slow Slip Revealed Through Seafloor Geodesy during 2019 East Coast Slow Slip at the Hikurangi Margin, New Zealand

Katherine Woods, Laura M Wallace, Spahr C Webb, Yoshihiro Ito, Martha K Savage, C David Chadwell, Charles A Williams Jr, Ryota Hino, Kimihiro Mochizuki, Emily Warren-Smith, Daniel H N Barker

AGU Fall Meeting 2020　2020/12
DONET 海底水圧計記録に対する非潮汐海洋モデルの適用とその評価

大塚英人, 太田雄策, 日野亮太, 久保田達矢, 稲津大祐

日本測地学会第134回講演会　2020/10
非定常地殻変動の把握を目指した A-0-A 方式による深海対応海底水圧計ドリフト補正システムの開発 (第 3 報)

太田雄策, 日野亮太, 佐藤真樹子, 鈴木秀市, 梶川宏明, 小畠時彦

日本測地学会第134回講演会　2020/10
日本海溝北部におけるスロースリップおよび津波地震のモデル化

中田令子, 内田直希, 日野亮太

日本地震学会 2020 年度秋季大会　2020/10
ウェーブグライダーを用いたGNSS-音響測距結合方式の海底地殻変動観測（その２）

飯沼卓史, 木戸元之, 福田達也, 太田雄策, 富田史章, 日野亮太

日本地震学会 2020 年度秋季大会　2020/10
2011年東北地方太平洋沖地震発生前の日本海溝沿いの低周波微動活動

高橋秀暢, 日野亮太, 内田直希, 東龍介, 川久保晋, 太田和晃, 篠原雅尚

日本地震学会 2020 年度秋季大会　2020/10
稠密OBSアレイによる北海道根室沖千島海溝沈み込み帯の地殻構造

東龍介, 小平秀一, 日野亮太, 藤江剛, 尾鼻浩一, 郎, 富田史章, 太田雄策

日本地震学会 2020 年度秋季大会　2020/10
Active-source seismic study with a dense linear OBS array off Nemuro, the southern Kuril subduction zone

JpGU-AGU Joint Meeting 2020　2020/07
Improvement in estimation of seafloor crustal deformation from ocean bottom pressure observations at the Hikurangi subduction zone offshore New Zealand

JpGU-AGU Joint Meeting 2020　2020/07
Assessment of the non-tidal component contributions to the ocean bottom pressure time series around Japan

JpGU-AGU Joint Meeting 2020　2020/07
Preliminary assessment of quality of the S-net long-term ocean bottom pressure observation in the northern part of the Japan Trench for detecting crustal deformation

JpGU-AGU Joint Meeting 2020　2020/07
Elucidation of locking state at the shallower plate boundary after the Tohoku Earthquake based on seafloor acoustic ranging

JpGU-AGU Joint Meeting 2020　2020/07
A Temporal Variation of Auto-correlation Function Calculated from Ocean Bottom Seismometers off Miyagi Prefecture

JpGU-AGU Joint Meeting 2020　2020/07
Shallow low-frequency tremor activity off Erimo, Hokkaido from 2006 to 2007 revealed from pop-up type ocean bottom seismometers

JpGU-AGU Joint Meeting 2020　2020/07
A review of decade-long marine geophysical studies in the Japan Trench since the 2011 Tohoku-oki earthquake

JpGU-AGU Joint Meeting 2020　2020/07
Trial of the crustal deformation detection accompanied with the tremor activities in Fukushima-Oki deduced from the ocean bottom pressure gauge data

JpGU-AGU Joint Meeting 2020　2020/07
Modelling of spontaneous and periodic slow slip in the northern part of the Japan Trench

JpGU-AGU Joint Meeting 2020　2020/07
Improvement in detection of seafloor crustal deformation due to shallow SSE using ocean bottom pressure by removing broad-band tide components

Inoue, T., T. Muramoto, D. Inazu, Y. Ito, R.Hino, K.Ohta, S. Suzuki

AGU Fall Meeting 2019　2019/12/11
Quantitative relationship between aseismic slip propagation speed and frictional properties

Ariyoshi, K, J-P. Ampuero, R.Burgmann, T. Matsuzawa, A. Hasegawa, R. Hino, T. Hori

AGU Fall Meeting 2019　2019/12/09
Continuous observation of ocean bottom pressure and sea surface height

Takahashi, N., K. Imai, M. Kido, Y. Ohta, T. Fukuda, T. Ishihara, H. Ochi, R. Hino

AGU Fall Meeting 2019　2019/12/09
GNSS-Acoustic Observation Using the Wave Glider to Detect the Seafloor Crustal Deformation Associated with the Temporal Change in the Interplate Locking State

Iinuma, T, M. Kido, Y. Ohta, T. Fukuda, F. Tomita, R. Hino, I. Ueki

AGU Fall Meeting 2019　2019/12
Locating shallow tectonic tremor with high precision: OBS Array of Arrays observation near the Japan Trench

Ohyanagi, S., K. Ohta, Y. Ito, R. Hino, Y. Ohta, R. Azuma, M. Shinohara, K. Mochizuki, T. Sato, Y. Murai

AGU Fall Meeting 2019　2019/12
Clustering of records of short-period ocean-bottom seismometers

Takahashi, H., R. Hino, Y. Ohta, N. Uchida, S. Suzuki, M. Shinohara

AGU Fall Meeting 2019　2019/12
Forearc trench-parallel anisotropy above a subducting plate revealed by the S-net ocean-bottom seismometers

Uchida, N, J. Nakajima, R. Takagi, K. Yoshida, T. Nakayama, R. Hino, T. Okada, Y.Asano, S. Tanaka

AGU Fall Meeting 2019　2019/12
Seafloor sediment thickness below S-net observatories offshore of the east Japan revealed from PS conversion wave at the sedimentary basement

Azuma, R., R. Takagi, G. Toyokuni, T. Nakayama, S. Suzuki, M. Sato, N. Uchida, R. Hino

AGU Fall Meeting 2019　2019/12
Coseismic slip and postseismic slip in the south of the 2011 Tohoku-Oki Earthquake

Nakata, R, R. Hino, T. Hori

AGU Fall Meeting 2019　2019/12
Development of the prototype system for the long-term OBP drift elimination using the “A-0-A” approach

Ohta, Y, R. Hino, S. Suzuki, M. Sato, H. Kajikawa, T. Kobata

AGU Fall Meeting 2019　2019/12
短周期OBSデータのクラスタ解析による低周波微動検出の試み

高橋秀暢, 日野亮太, 太田雄策, 内田直希, 鈴木秀市, 篠原雅尚

日本地震学会2019年度秋季大会　2019/09/18
Configuration and structure of the Philippine Sea plate off Boso, Japan

2019/09/17
茨城県沖日本海溝沿いの地殻構造不均質

望月公廣, 山田知朗, 篠原雅尚, 日野亮太, 東龍介, 伊藤喜宏, 村井芳夫, 植平賢司, 佐藤利典

日本地震学会2019年度秋季大会　2019/09/17
陸上臨時地震観測で見た2019年山形県沖の地震

岡田知己, 酒井慎一, 吉田圭佑, 内田直希, 中山貴史, 平原聡, 松澤暢, 日野亮太, 篠原雅尚, Sibson Richard

日本地震学会2019年度秋季大会　2019/09/17
堆積層基盤PS変換波にもとづくS-net観測点下の堆積層厚さ分布

東龍介, 高木涼太, 豊国源知, 中山貴史, 鈴木秀市, 佐藤真樹子, 内田直希, 日野亮太

日本地震学会2019年度秋季大会　2019/09/17
S-net により推定された前弧上盤の海溝平行の速度異方性

内田直希, 中島淳一, 高木涼太, 吉田圭佑, 日野亮太, 岡田知己, 浅野陽一, 田中佐千子

日本地震学会2019年度秋季大会　2019/09/17
千島海溝南西部根室沖における海底測地観測網の構築

太田雄策, 木戸元之, 東龍介, 佐藤真樹子, 鈴木秀市, 山本龍典, 高橋秀暢, 木村友季保, 大塚英人, 本荘千枝, 日野亮太, 大園真子, 岡田和見, 青田裕樹, 高橋浩晃, 篠原雅尚, 富田史章, 金松敏也, ションカンシー, 飯沼卓史

日本地震学会2019年度秋季大会　2019/09/16
リアルタイム津波・地殻変動観測ブイシステムの開発と海底圧力連続観測

高橋成実, 今井健太郎, 木戸元之, 太田雄策, 福田達也, 石原靖久, 越智寛, 日野亮太

日本地震学会2019年度秋季大会　2019/09/16
海底圧力計記録に含まれる長周期潮汐成分を考慮した浅部スロースリップによる海底地殻変動の検出

井上智裕, 村本智也, 稲津大祐, 伊藤喜宏, 日野亮太, 太田和晃, 鈴木秀市

日本地震学会2019年度秋季大会　2019/09/16
海底間音響測距観測による2011年東北地方太平洋沖地震後の余効すべり不均質性の直接検出

山本龍典, 日野亮太, 木戸元之, 本荘千枝, 長田幸仁, 小平秀一, 中村恭之

日本地震学会2019年度秋季大会　2019/09/16
海底地震計記録の自己相関関数の時間変化と海面における風の関係

植村美優, 伊藤喜宏, 太田和晃, 日野亮太, 篠原雅尚

日本地震学会2019年度秋季大会　2019/09/16
An intimate analysis of shallow ambient and triggered tremor in the Japan Trench by the OBS Array of Arrays

Ohyanagi, S., K. Ohta, Y. Ito, R. Hino, Y. Ohta, R. Azuma, M. Shinohara, K. Mochizuki, T. Sato, Y. Murai

2019/09
Along-strike variations of crustal structure in Japan Trench and its relevance to slow-slip generation Invited

R. Hino

2019/09
Slip behavior of the shallow subduction interface along the Japan Trench Invited

Hino, R.

International Converence in Commemorial of the 20th Anniversary of the 1999 Chi-Chi Earthquake　2019/09
2012年宮城沖プレート内ダブレット地震の震源断層モデルから検討した日本海溝近傍における海洋プレート内レオロジー

久保田達矢, 日野亮太, 鈴木秀市

日本地球惑星科学連合2019年大会　2019/05/30
2011年東北地方太平洋沖地震後の震源域における地震活動と応力場の空間分布

西森智也, 日野亮太, 篠原雅尚

日本地球惑星科学連合2019年大会　2019/05/28
High definition imaging of the Japan Trench by OBS Array of Arrays: Does shallow tectonic tremor occur in the plate interface?

2019/05/29
Tremor and slow slip associated with afterslip of the 2011 Tohoku earthquake

2019/05/29
Heterogeneous structure around a region of slow earthquake activity off Ibaraki prefecture along the Japan Trench

2019/05/29
Possible tectonic tremor activities near the VLFE epicenters in the Sanriku-Oki region in 2011

2019/05/29
Quantitative relationship between aseismic slip propagation speed and frictional properties

2019/05/29
加速度計記録を用いたS-netのセンサー姿勢・方位推定と地殻変動検出可能性の検討

高木涼太, 内田直希, 中山貴史, 東龍介, 石上朗, 岡田知己, 太田雄策, 日野亮太

日本地球惑星科学連合2019年大会　2019/05/29
S-netを用いた東北日本前弧海域下のS波スプリッティング解析

内田直希, 中島淳一, 高木涼太, 吉田圭佑, 中山貴史, 日野亮太, 岡田知己, 浅野陽一, 田中佐千子

日本地球惑星科学連合2019年大会　2019/05/28
房総沖太平洋プレート内二重深発地震の発震機構：2011年東北地震後の時間変化

陳冠宇, 佐藤利典, 佐藤智治, 寺田麻美, 篠原雅尚, 望月公廣, 山田知朗, 植平賢司, 眞保敬, 小平秀一, 町田祐弥, 日野亮太, 東龍介, 村井芳夫, 伊藤喜宏, 八木原寛, 平田賢治, 橋間昭徳, Andrew Freed

日本地球惑星科学連合2019年大会　2019/05/28
S-netを用いた初動読み取りと震源決定

岡田知己, 高木涼太, 中山貴史, 鈴木秀市, 東龍介, 豊国源知, 吉田圭佑, 内田直希, 日野亮太

日本地球惑星科学連合2019年大会　2019/05/28
Revisiting the Coseismic Slip Distribution of the 2011 Tohoku-oki Earthquake Considering Early Postseismic Deformation, Non-linear Viscoelasticity, and Heterogeneous Structure

飯沼卓史, 縣亮一郎, 太田雄策, 日野亮太, 堀高峰

日本地球惑星科学連合2019年大会　2019/05/28
Prototype of deep-sea ocean bottom pressure recorder with self-calibration capability using “A-0-A” approach for detection of long-term crustal deformation

2019/05/27
堆積層基盤PS変換波の走時解析に基づく日本・千島海溝域の堆積層厚さ分布

東龍介, 豊国源知, 高木涼太, 鈴木秀市, 佐藤真樹子, 中山貴史, 内田直希, 日野亮太

日本地球惑星科学連合2019年大会　2019/05/27
ヒクランギ沈み込み帯における非潮汐成分の係数補正を用いた海底圧力計の地殻変動検出

井上智裕, 村本智也, 稲津大祐, 伊藤喜宏, 日野亮太, 太田和晃, 鈴木秀市

日本地球惑星科学連合2019年大会　2019/05/26
S-netを用いた海域総合解析

内田直希, 東龍介, 石上朗, 岡田知己, 高木涼太, 豊国源知, 海野徳仁, 太田雄策, 佐藤真樹子, 鈴木秀市, 高橋秀暢, 立岩和也, 趙大鵬, 中山貴史, 長谷川昭, 日野亮太, 平原聡, 松澤暢, 吉田圭佑

日本地球惑星科学連合2019年大会　2019/05/26
津波・地殻変動観測ブイシステムを用いた海底圧力連続観測

高橋成実, 今井健太郎, 木戸元之, 太田雄策, 福田達也, 石原靖久, 越智寛, 鈴木健介, 日野亮太

日本地球惑星科学連合2019年大会　2019/05/26
DOPを指標とした係留ブイGNSS-A測位精度評価の実データに基づく定量化

今野美冴, 木戸元之, 本荘千枝, 太田雄策, 日野亮太

日本地球惑星科学連合2019年大会　2019/05/26
IPR（Indirect Path Ranging）：中継機を利用した長基線音響測距を可能にする手法

山本龍典, 日野亮太, 木戸元之

日本地球惑星科学連合2019年大会　2019/05/26
Estimation of the early afterslip location of the 2011 Tohoku-Oki earthquake using onshore GNSS and offshore pressure data

2019/05/26
An investigation into the co- and post-seismic deformation associated with the 2011 Tohoku-oki Earthquake considering non-linear viscoelastic response

Iinuma, T, R. Agata, Y. Ohta, R. Hino, T. Hori

EGU General Assembly 2019　2019/04/12
Quantitative relationship between aseismic slip propagation speed and frictional properties

Ariyoshi, K, J-P. Ampuero, R.Burgmann, T. Matsuzawa, A. Hasegawa, R. Hino, T. Hori

EGU General Assembly 2019　2019/04/09
Extremely long duration of ground motion arising from sedimentary structures above slow slip areas of the Hikurangi subduction zone International-presentation

Kaneko, Y, Y. Ito, B. Chow, L. Wallace, C. Tape, E. D'Anastasio, R. Grapenthin, R. Hino

AGU Fall Meeting 2018　2018/12/14
Utilizing coastal-reflected tsunami waves observed by the ocean bottom pressure gauges to improve offshore earthquake source parameters: Application to the 2016 Te Araroa earthquake, New Zealand (Mw 7.0) International-presentation

Kubota, T, T. Saito, Y. Ito, Y. Kaneko, L. Wallace, S. Suzuki, R. Hino, S. A. Henrys

AGU Fall Meeting 2018　2018/12/14
Characteristics of Japan Trench shallow megathrust revealed by deep-sea researches International-presentation

Hino, R, S. Kodaira, T. Kanamatsu, M. Shinohara, Y. Ito

AGU Fall Meeting 2018　2018/12/14
Quantitative assessment of the “A-0-A” method based on the laboratory experiments: toward the accurate long-term OBP sensor drift estimation International-presentation

NIshimagi, Y, Y. Ohta, R. Hino, S. Suzuki, M. Sato, H. Kajikawa, T. Kobata

AGU Fall Meeting 2018　2018/12/13
Ground motion and its ocean bottom amplification in subduction zones International-presentation

Ito, Y, Y. Kaneko, S. C. Webb, L. M. Wallace, R. Hino

AGU Fall Meeting 2018　2018/12/13
Frequent activity of shallow tectonic tremors in the southern margin of the 2011 Tohoku-Oki earthquake rupture zone International-presentation

Ohta K, Y. Ito, S. Ohyanagi, R. Hino, Y. Ohta, R. Azuma, M. Shinohara, K. Mochizuki, T. Sato, Y. Murai

AGU Fall Meeting 2018　2018/12/13
Direct path ranging on seafloor: measuring precise and continuous horizontal movement International-presentation Invited

Yamamoto, R, M. Kido, R. Hino

AGU Fall Meeting 2018　2018/12/13
Attempt to detect VLFE-like events in Tohoku-Oki using local short period OBS records International-presentation

Takahashi, H, R. Hino, Y. Ohta, N. Uchida, S. Suzuki, M. Shinohara, T. Matsuzawa

AGU Fall Meeting 2018　2018/12/12
Dynamic triggering of low frequency tremor unveiled by an OBS array near the Japan Trench International-presentation

Ohyanagi, S, K.Ohta, Y.Ito, R.Hino, Y.Ohta, R.Azuma, M.Shinohara, K.Mochizuki, T.Sato, Y.Murai

AGU Fall Meeting 2018　2018/12/12
Quantitative relationship between slow slip migration speed and frictional properties International-presentation

Ariyoshi, K, J.-P. Ampuero, R. Burgmann, T. Matsuzawa, A. Hasegawa, R. Hino, T. Hori

AGU Fall Meeting 2018　2018/12/12
Modelling of the Early Postseismic Deformation Associated with the 2011 Tohoku-Oki Earthquake with Considering Non-linear Rheology International-presentation

Iinuma, T, R. Agata, Y. Ohta, R. Hino, T. Hori

AGU Fall Meeting 2018　2018/12/11
Detection of seafloor crustal deformation from ocean bottom pressure data using amplitude correction of non-tidal components International-presentation

Inoue, T, T. Muramoto, Y. Ito, D. Inazu, R. Hino, K. Ohta, S. Suzuki

AGU Fall Meeting 2018　2018/12/10
係留式音響測距装置の開発と実装

山本龍典, 日野亮太, 木戸元之

日本測地学会第130回講演会　2018/10/16
非定常地殻変動の把握を目指したA-0-A方式による海底水圧計ドリフト成分補正の試み

西間木佑衣, 太田雄策, 日野亮太, 鈴木秀市, 佐藤真樹子, 梶川宏明, 小畠時彦

日本地震学会2018年度秋季大会　2018/10/09
非地震性すべりの伝播速度と摩擦特性との関係:実際問題への適用に向けて

有吉慶介, Jean-Paul Ampuero・Roland Bu_rgmann, 松澤暢, 長谷川昭, 日野亮太, 堀高峰

日本地震学会2018年度秋季大会　2018/10/09
海底地震計記録の自己相関関数の時間変化の要因を探る

植村美優, 伊藤喜宏, 太田和晃, 日野亮太, 篠原雅尚

日本地震学会2018年度秋季大会　2018/10/09
非線形粘弾性を考慮した 2011 年東北地方太平洋沖地震の初期余効変動のモデル化の試み

飯沼卓史, 縣亮一郎, 堀高峰, 太田雄策, 日野亮太

日本地震学会2018年度秋季大会　2018/10/09
宮城県沖における低周波微動発生域の推定(2008 ~ 2015 年)

片上智史, 伊藤喜宏, 太田和晃, 日野亮太, 鈴木秀市, 篠原雅尚

日本地震学会2018年度秋季大会　2018/10/09
自己浮上式海底地震計を用いた 2011 年東北沖地震震源域におけるモニタリング観測

篠原雅尚, 山田知朗, 望月公廣, 中東和夫, 町田祐弥, 真保敬, 悪原岳, 仲谷幸浩, 塩原肇, 村井芳夫, 日野亮太, 伊藤喜宏, 佐藤利典, 植平賢司, 八木原寛, 尾鼻浩一郎, 小平秀一

日本地震学会2018年度秋季大会　2018/10/09
OBSアレイで観測された日本海溝での誘発低周波微動

大柳修慧, 太田和晃, 伊藤喜宏, 日野亮太, 太田雄策, 東龍介, 篠原雅尚, 望月公廣, 佐藤利典, 村井芳夫

日本地震学会2018年度秋季大会　2018/10/09
日本海溝の微動活動

太田和晃, 伊藤喜宏, 片上智史, 大柳修慧, 日野亮太, 太田雄策, 東龍介, 篠原雅尚, 望月公廣, 佐藤利典, 村井芳夫

日本地震学会2018年度秋季大会　2018/10/09
短周期 OBS 記録を用いた VLFE 類似イベント検出の試み

高橋秀暢, 日野亮太, 太田雄策, 鈴木秀市, 篠原雅尚, 松澤孝紀

日本地震学会2018年度秋季大会　2018/10/09
宮城県沖浅部プレート境界の反射強度分布

東龍介, 日野亮太, 望月公廣, 村井芳夫, 八木原寛, 佐藤利典, 篠原雅尚

日本地震学会2018年度秋季大会　2018/10/09
2011年東北地方太平洋沖地震前後の震源域における応力場の時空間分布

西森智也, 日野亮太

日本地震学会2018年度秋季大会　2018/10/09
深海調査による日本海溝プレート境界浅部の特徴

日野亮太, 小平秀一, 金松敏也, 篠原雅直, 伊藤喜宏

日本地震学会2018年度秋季大会　2018/10/09
2011年東北地方太平洋沖地震震源域における地震後応力場

西森智也, 日野亮太, 吉田圭佑

日本地球惑星科学連合2018年大会　2018/05/24
Characteristics of seismograms of VLFEs recorded by short period OBSs in the northern Japan Trench International-presentation

高橋秀暢, 日野亮太, 太田雄策, 内田直希, 鈴木秀市, 篠原雅尚, 松澤孝紀

日本地球惑星科学連合2018年大会　2018/05/23
Seismic refraction and wide-angle reflection experiment in southern Kyushu, Japan: (1) the 2017 exploration report

宮町宏樹, 高橋浩晃, 青山裕, 椎名高裕, 高田真秀, 一柳昌義, 山口照寛, 小野夏生, 齊藤一真, 伊藤ちひろ, 村井芳夫, 筒井智樹, 井上雄介, 竹井瑠一, 山本希, 平原聡, 中山貴史, 日野亮太, 東龍介, 大友周平, 蔵下英司, 岩崎貴哉, 篠原雅尚, 山田知朗, 阿部英二, 中東和夫, 渡辺俊樹, 前田裕太, 堀川信一郎, 奥田隆, 辻修平, 長谷川大真, 片尾浩, 澁谷拓郎, 三浦勉, 中川潤, 加藤慎也, 山下裕亮, 松島健, 磯田謙心, Agnis TRIAHADINI, 手操佳子, 宮町凜太郎, 清水洋, 小林励司, 仲井一穂, 早田正和, 八木原寛, 平野舟一郎

日本地球惑星科学連合2018年大会　2018/05/20
房総沖における太平洋プレート内二重深発地震面の発震機構：2011年東北地震前後の変化

佐藤智治, 佐藤利典, 寺田麻美, 篠原雅尚, 望月公廣, 山田知朗, 植平賢司, 眞保敬, 小平秀一, 町田祐弥, 日野亮太, 東龍介, 村井芳夫, 伊藤喜宏, 八木原寛, 平田賢治

日本地球惑星科学連合2018年大会　2018/05/20
Spatial distribution of reflection intensity on the upper surface of the Philippine Sea Plate, off the Boso Peninsula, Japan International-presentation

河野昭博, 佐藤利典, 篠原雅尚, 望月公廣, 山田知朗, 植平賢司, 眞保敬, 町田祐弥, 日野亮太, 東龍介

日本地球惑星科学連合2018年大会　2018/05/20
スロー地震の移動速度と摩擦パラメタ―の定量的な関係式の導出

有吉慶介, ローランドバーグマン, アンプエロジャンポール, 松澤暢, 長谷川昭, 日野亮太, 堀高峰

日本地球惑星科学連合2018年大会　2018/05/20
海洋変動ノイズを低減した海底圧力アレイ記録に基づく海底地殻変動の評価：ヒクランギ沈み込み帯の場合 Invited

村本智也, 伊藤喜宏, 稲津大祐, 日野亮太, 鈴木秀市

日本地球惑星科学連合2018年大会　2018/05/20
津波沿岸反射を用いたテ・アラロア地震 (ニュージーランド，Mw 7.1) のセントロイド水平位置・断層サイズの推定

久保田達矢, 齊藤竜彦, 伊藤喜宏, 日野亮太, 鈴木秀市, Kaneko Yoshihiro, Wallace Laura

日本地球惑星科学連合2018年大会　2018/05/20
宮城県沖浅部スロースリップ域周辺のプレート境界反射強度分布

東龍介, 日野亮太, 望月公廣, 村井芳夫, 八木原寛, 佐藤利典, 篠原雅尚

日本地球惑星科学連合2018年大会　2018/05/20
Micro Low-Frequency Tremor Activity Before the Tohoku-Oki Earthquake International-presentation

片上智史, 伊藤喜宏, 太田和晃, 日野亮太, 鈴木秀市, 篠原雅尚

日本地球惑星科学連合2018年大会　2018/05/20
地震波干渉法に基づくスロー地震に伴う波動場の時空間変化

植村美優, 伊藤喜宏, 太田和晃, 日野亮太, 篠原雅尚

日本地球惑星科学連合2018年大会　2018/05/20
Breakdown of the Gutenberg-Richter law after the 2011 Tohoku earthquake

仲谷幸浩, 望月公廣, 篠原雅尚, 山田知朗, 塩原肇, 日野亮太, 伊藤喜宏, 村井芳夫, 佐藤利典, 植平賢司, 八木原寛, 小平秀一, 対馬弘晃

日本地球惑星科学連合2018年大会　2018/05/20
Practical method to determine relative orientation of horizontal components of ocean bottom seismometer in an array

Ohyanagi, S, K.Ohta, Y.Ito, R.Hino, Y.Ohta, R.Azuma, M.Shinohara, K.Mochizuki, T.Sato, Y.Murai

日本地球惑星科学連合2018年大会　2018/05/20
Extension of postseismic geodetic observations constrains on coseismic slip distribution through viscoelastic relaxation

富田史章, 太田雄策, 飯沼卓史, 日野亮太, 木戸元之, 内田直希

日本地球惑星科学連合2018年大会　2018/05/20
海底水温勾配の長期観測

鈴木秀市, 日野亮太, 佐藤真樹子, 伊藤善宏, 久保田達矢, 稲津大佑

日本地球惑星科学連合2018年大会　2018/05/20
重錘型圧力天びんを用いた海底水圧計のドリフト特性評価と実海域データへの適用

西間木佑衣, 太田雄策, 日野亮太, 鈴木秀市, 佐藤真樹子, 梶川宏明, 小畠時彦

日本地球惑星科学連合2018年大会　2018/05/20
日本海溝アウターライズ域の地殻構造

大友周平, 東龍介, 日野亮太, 藤江剛, 小平秀一

日本地球惑星科学連合2018年大会　2018/05/20
宮城県沖スロースリップ域周辺のプレート境界反射強度分布

東龍介, 日野亮太, 望月公廣, 村井芳夫, 八木原寛, 佐藤利典, 篠原雅尚

日本地球惑星科学連合2018年大会　2018/05/20
海底間音響測距による東北地方太平洋沖地震の余効すべり検出の試み

山本龍典, 日野亮太, 木戸元之, 長田幸仁, 本荘千枝, 鈴木秀市

日本地球惑星科学連合2018年大会　2018/05/20
沖縄トラフ伊是名海穴白嶺鉱床における海中曳航式磁気探査

本荘千枝, 李相均, 淺川栄一, 角知則, 日野亮太

日本地球惑星科学連合2018年大会　2018/05/20
Direct measurement of postseismic motion of incoming Pacific plate after the 2011 Tohoku Earthquake using acoustic ranging system International-presentation

Yamamoto, R, R. Hino, M. Kido, Y. Ohta, C. Honsho

EGU General Assembly 2018　2018/04/08
Very low frequency earthquakes in Tohoku-Oki recorded by short-period ocean bottom seismographs International-presentation

Takahashi, H, R. Hino, Y. Ohta, N. Uchida, S. Suzuki, M. Shinohara, Y. Nakatani, T. Matsuzawa

AGU-FM2017　2017/12
Quantitative relationship between slow earthquake migration speed and frictional properties International-presentation

Ariyoshi, K, T. Matsuzawa, R. Burgmann, A. Hasegawa, R. Hino, T. Hori

AGU-FM2017　2017/12
Spatial distribution of reflection intensity of the upper surface of the Philippine Sea plate International-presentation

Kono, A, T. Sato, M. Shinohara, K. Mochizuki, T. Yamada, K. Uehira, T. Shimbo, Y. Machida, R. Hino, R. Azuma

AGU-FM2017　2017/12
Spatiotemporal variations of the frequency-magnitude distribution before and after the 2011 Tohoku earthquake in the Japan Trench subduction zone International-presentation

Nakatani, Y, K. Mochizuki, M. Shinohara, T. Yamada, H. Shiobara, R. Hino, Y. Ito, Y. Murai, T. Sato, K. Uehira, H. Yakiwara, S. Kodaira, H. Tsushima

AGU-FM2017　2017/12
Challenge for the accurate CMT estimation of the offshore earthquakes using ocean bottom pressure gauges as seismometers International-presentation

Kubota, T, T. Saito, W. Suzuki, R. Hino

AGU-FM2017　2017/12
Postseismic slip of 2011 Tohoku-oki Earthquake across the frontal wedge through long-term geodetic observations International-presentation

Yamamoto, R, R. Hino, M. Kido, Y. Ohta, C. Honsho

2017 AGU Fall meeting　2017/12
Real-time and on-demand buoy observation system for tsunami and crustal displacement, International-presentation

Takahashi, N, K. Imai, Y. Ishihara, T. Fukuda, H. Ochi, K. Suzuki, M. Kido, Y. Ohta, M. Imano, R. Hino

2017 AGU Fall meeting　2017/12
Discoveries and Controversies in Geodetic Imaging of Deformation Before and After the M=9 Tohoku-oki Earthquake International-presentation

Sun, T, K. Wang, R. Hino, T. Iinuma, F. Tomita, M. Kido

AGU 2017 Fall Meeting　2017/12
常時微動を用いた地震波干渉法によるスロー地震に起因する地震波速度変化の検出

植村美優, 伊藤喜宏, 太田和晃, 日野亮太, 篠原雅尚

日本地震学会2017年度秋季大会　2017/10
振幅スペクトル形状を用いたテンプレート解析法による低周波微動の検出

片上智史, 伊藤喜宏, 太田和晃, 日野亮太, 鈴木秀市, 篠原雅尚

日本地震学会2017年度秋季大会　2017/10
粘弾性グリーン関数を用いた地震時・地震後すべり分布の同時推定

富田史章, 太田雄策, 飯沼卓史, 木戸元之, 日野亮太

日本測地学会第128回講演会　2017/10
粘弾性グリーン関数を用いた2011年東北沖地震に伴う地震時・地震後すべりの同時推定

富田史章, 太田雄策, 日野亮太, 木戸元之, 飯沼卓史

日本地震学会2017年度秋季大会　2017/10
屈折法・広角反射法探査データによる日本海溝アウターライズ域東麓の海洋リソスフェア構造

大友周平, 東龍介, 日野亮太, 藤江剛, 小平秀一

日本地震学会2017年度秋季大会　2017/10
2011年の宮城沖スロースリップ震源域周辺の地殻構造

東龍介, 日野亮太, 望月公廣, 村井芳夫, 八木原寛, 佐藤利典, 篠原雅尚

日本地震学会2017年度秋季大会　2017/10
浅部余効すべりの検出に向けた日本海溝を挟む精密海底測地観測

山本龍典, 日野亮太, 木戸元之, 本荘千枝

日本測地学会第128回講演会　2017/10
海底地震計によって捉えられた東北沖超低周波地震

高橋秀暢, 日野亮太, 鈴木秀市, 太田雄策, 内田直希, 篠原雅尚, 仲谷幸浩, 松澤孝紀

日本地震学会2017年度秋季大会　2017/10
Little evidence of shortening motion across the Japan Trench after the 2011 Tohoku-oki earthquake from direct-path acoustic ranging International-presentation

Yamamoto, R, R. Hino, M. Kido, C. Honsho

IAG-IASPEI 2017　2017/08
Accuracy of a continuous/on-demand GPS/Acoustic seafloor positioning using a slackly moored buoy in the Kuroshio region International-presentation

Imano, M, M. Kido, Y. Ohta, N. Takahashi, T. Fukuda, H. Ochi, C. Honsho, R. Hino

IAG-IASPEI 2017　2017/08
Postseismic deformation of the 2011 Tohoku Earthquake measured by GPS/Acoustic observations International-presentation

Tomita, F, M. Kido, Y. Ohta, T. Iinuma, R. Hino

IAG-IASPEI 2017　2017/08
Spatio-temporal variation of the postseismic deformation of the 2011 off the Pacific coast of Tohoku Earthquake (M9.0) detected by means of terrestrial and seafloor observations International-presentation

Iinuma, T, Y. Ohta, S. Miura, J. Muto, F. Tomita, M. Kido, R. Hino

IAG-IASPEI 2017　2017/08
Detecting the Temporal Variation in Seismic Velocity Accompanied by 2011 Tohoku-Oki Earthquake and the Slow Slip Event, Using Seismic Interferometry of Ambient Noise International-presentation

Uemura, M, Y. Ito, K. Ohta, R. Hino, M. Shinohara

IAG-IASPEI2017　2017/07
The seismotectonic implications of source models of M-7 class earthquakes before ad after the 2011 Tohoku-Oki Earthquake using offshore tsunami records International-presentation

Kubota, T, R. Hino, Y. Ohta, S. Suzuki

IAG-IASPEI2017　2017/07
Spatio-temporal variation of the postseismic deformation of the 2011 off the Pacific coast of Tohoku Earthquake (M9.0) detected by means of terrestrial and seafloor observations International-presentation

Iinuma, T, Y. Ohta, S. Miura, J. Muto, F. Tomita, M. Kido, R. Hino

IAG-IASPEI2017　2017/07
Micro low-frequency tremor activity near Japan Trench International-presentation

Katakami, S, Y. Ito, K. Ohta, R. Hino, S. Suzuki, M. Shinohara

IAG-IASPEI2017　2017/07
Low frequency tremor activity in the Tohoku subduction zone based on ocean bottom seismograms International-presentation

Takahashi, H, R. Hino, M. Shinohara, Y. Nakatani, S. Suzuki

IAG-IASPEI2017　2017/07
Seismic structure around the slow slip source in the northeastern Japan forearc by an airgun-ocean bottom seismometer survey International-presentation

Azuma, R, R. Hino, K. Mochizuki, Y. Murai, H. Yakiwara, T. Sato, M. Shinohara

IAG-IASPEI2017　2017/07
Geometry and spatial variations of seismic reflection intensity of the upper surface of the Philippine Sea plate off the Boso Peninsula, Japan International-presentation

Kono, A, T. Sato, M. Shinohara, K. Mochizuki, T. Yamada, K. Uehira, T. Shimbo, Y. Machida, R. Hino, R. Azuma

IAG-IASPEI2017　2017/07
Reexamination of the fault model for transient slow slip event in the Japan Trench before the 2011 Tohoku-Oki earthquake International-presentation

Nishimagi, T, Y. Ohta, R. Hino

IAG-IASPEI2017　2017/07
Inverstigation of long period behaviors of seafloor pressure records based on field data and laboratory test results International-presentation

Hino, R, S. Suzuki, M. Sato, Y. Ohta, Y. Ito, H. Kajikawa, T. Kobata

IAG-IASPEI2017　2017/07
海陸地殻変動観測の捉えた2011年東北地方太平洋沖地震の余効変動の時空間変化 International-presentation

飯沼卓史, 太田雄策, 三浦哲, 武藤潤, 富田史章, 木戸元之, 日野亮太

JpGU2017　2017/05
Temporal change of stress field in forearc region after the 2011 Tohoku-Oki earthquake International-presentation

Nishimori, T, K. Yoshida, R. Hino, Y. Asano

JpGU2017　2017/05
Reexamination of the fault model for transient slow slip event in the Japan Trench before the 2011 Tohoku-Oki earthquakeTohoku EarthquakeTohoku Earthquake International-presentation

Nishimagi, Y, Y. Ohta, R. Hino, M. Ohzono

JpGU2017　2017/05
自己浮上式海底圧力計による海底上下変動長期観測にむけて International-presentation

日野亮太, 鈴木秀市, 佐藤真樹子, 太田雄策, 伊藤喜弘, 梶川宏明, 小畠時彦

JpGU2017　2017/05
Along-arc segmentation of Japan Trench and its relevance to co- and postseismic slip of the 2011 Tohoku EarthquakeTohoku Earthquake International-presentation

Hino, R, S. Kodaira, T. Kanematsu, M. Shinohara, Y. Ito

JpGU2017　2017/05
Crustal structure around the slow slip event occurred at the off Miyagi, Japan, deduced by an airgun-ocean bottom seismometer survey

Azuma, R, R. Hino, K. Mochizuki, Y. Murai, H. Yakiwara, T. Sato, M. Shinohara

JpGU2017　2017/05
Direct and precise geodetic measurement across the Japan Trench after the 2011 Tohoku-oki earthquake International-presentation

Yamamoto, R, R. Hino, M. Kido, C. Honsho

JpGU2017　2017/05
Along-arc segmentation of Japan Trench and its relevance to co- and postseismic slip of the 2011 Tohoku Earthquake

Hino, R, S. Kodaira, T. Kanamatsu, M. Shinohara, Y. Ito

JpGU2017　2017/05
Characteristics of frictional properties’ relationship with afterslip propagation speed International-presentation

Ariyoshi, K, T. Matsuzawa, R. Burgmann, A. Hasegawa, R. Hino, T. Hori

EGU2017　2017/04
A Trial for Detecting the Temporal Variation in Seismic Velocity Accompanied by a Slow Slip Event using Seismic Interferometry of Ambient NoiseTohoku Earthquake International-presentation

Uemura, M, Y. Ito, K. Ohta, R. Hino, M. Shinohara

EGU2017　2017/04
Seismic array observations in the source region of the 2011 Tohoku-oki earthquake using ocean bottom seismometers International-presentation

Ohta, K, Y. Ito, R. Hino, Y. Ohta, R. Azuma, M. Shinohara, K. Mochizuki, T. Sato, Y. Murai

EGU2017　2017/04
Shallow micro low-frequency tremor before the Tohoku-Oki earthquake International-presentation

Katakami,S, Y. Ito, K. Ohta, R. Hino, S. Suzuki, M. Shinohara

EGU2017　2017/04
Along-strike segmentation of Japan Trench and its relevance to co- and postseismic slip of the 2011 Tohoku Earthquake International-presentation

Hino, R, S. Kodaira, T. Kanematsu, M. Shinohara, Y. Ito

EGU2017　2017/04
Monitoring postseismic motion of the frontal wedge after 2011 Tohoku Earthquake by across-trench acoustic ranging

Yamamoto, R, R. Hino, M. Kido, C. Honsho

EGU2017　2017/04
Postseismic deformation associated with the 2011 Tohoku Earthquake deduced by means of GPS/Acoustic surveys International-presentation

Tomita, F, M. Kido, Y. Ohta, T. Iinuma, R. Hino

EGU2017　2017/04
Spatiotemporal variation in the postseismic deformation of the 2011 Tohoku-oki earthquake revealed by seafloor geodetic observations International-presentation

Tomita, F, M. Kido, Y. Ohta, R. Hino, T. Iinuma

AGU 2016 Fall Meeting　2016/12
Micro low-frequency tremor near the Japan Trench before the Tohoku-Oki earthquake International-presentation

Katakami, S., Y, Ito, K. Ohta, R. Hino, S. Suzuki, M. Shinohara

AGU 2016 Fall Meeting　2016/12
Detection of Shallow Slow Slip events on the Northern Hikurangi Margin using Ocean Bottom Pressure Recorders International-presentation

Muramoto, T, Y. Ito, D. Inazu, S. A. Henrys, L. Wallace, S. Bannister, K. Mochizuki, R. Hino, S. Suzuki

AGU 2016 Fall Meeting　2016/12
Characteristics of frictional properties’ dependency on afterslip propagation speed International-presentation

Characteristics of frictional, properties’ dependency on afterslip, propagation speed

AGU 2016 Fall Meeting　2016/12
A Trial for Detecting the Temporal Variation in Seismic Velocity Accompanied by a Slow Slip Event, Using Seismic Interferometry of Ambient Noise International-presentation

Uemura, M, Y. Ito, K. Obara, R. Hino, M. Shinohara

AGU 2016 Fall Meeting　2016/12
Amplitude Changes of the Seismic Reflected Phases from the Plate Interface after the 2011 Tohoku Earthquake around its Northern Limit Region as Revealed by Active Seismic Surveys International-presentation

Mochizuki, K, K. Ishihara, T. Yamada, M. Shinohara, R. Azuma, R. Hino, T. Sato, T. Murai, H. Yakiwara

AGU 2016 Fall Meeting　2016/12
Along-trench variations of the shallow megathrust zone in Tohoku International-presentation

Hino, R, S. Kodaira, T. Kanamatsu, M. Shinohara, Y. Ito

AGU 2016 Fall Meeting　2016/12
近地津波および遠地地震波による2012年東北沖スラブ内地震 (Mw 7.2) の破壊過程

久保田達矢, 日野亮太, 太田雄策, 鈴木秀市, 稲津大祐

日本地震学会2016年度秋季大会　2016/10
tFISH/EEW: 沖合津波観測と緊急地震速報に基づく津波予測アルゴリズムの開発とその性能評価

堀内明子, 日野亮太, 太田雄策, 加地正明, 越村俊一, 対馬弘晃

日本地震学会2016年度秋季大会　2016/10
エアガン−海底地震計探査記録に基づく日本海溝北西太平洋の海洋プレート反射構造

大友周平, 日野亮太, 東龍介, 藤江剛, 小平秀一

日本地震学会2016年度秋季大会　2016/10
Improved fault model of the Tohoku intraslab earthquake on Dec. 2012 (Mw 7.2) and its implication for the post-2011 stress state

Kubota, T, R. Hino, S. Suzuki, Y. Ohta, D. Inazu

日本地球惑星科学連合2016年大会　2016/09/11
2011年東北地方太平洋沖地震前後でのプレート境界断層の挙動

日野亮太

日本地質学会123年学術大会　2016/09/11
Detecting a relative motion across the Japan Trench using precise acoustic ranging

Yamamoto, R, R. Hino, M. Kido, Y. Ohta, Kubota, F. Tomita, K. Ohta, Y. Osada

日本地球惑星科学連合2016年大会　2016/05
Foreshock activities before the 2011 Tohoku-Oki Earthquake

Atnafu, D, R. Hino, R. Azuma, Y. Ohta, M. Shinohara, Y. Ito

日本地球惑星科学連合2016年大会　2016/05
Spatial characteristics of postseismic deformation following the 2011 Tohoku-oki earthquake inferred from repeated GPS/Acoustic observations

Tomita, F, M. Kido, Y. Ohta, R. Hino, T. Iinuma, Y. Osada

日本地球惑星科学連合2016年大会　2016/05
Polarization evidence for the occurrence of shallow tremors in the Japan Trench subduction zone

Ohta,K, Y. Ito, S. Katakami, R. Hino, S. Suzuki, M. Shinohara

日本地球惑星科学連合2016年大会　2016/05
余効すべり伝播速度に関する摩擦特性の依存性

有吉慶介, 松澤暢, 長谷川昭, 日野亮太, 堀高峰

日本地球惑星科学連合2016年大会　2016/05
The Great Sanriku-oki earthquake of 2 March 1933: Source Characterization Based Regional and Far Field Information and Implications for Off-Trench Normal Faulting Tsunami Sources in Japan and Elsewhere

Kirby, S, N. Uchida, E. Okal, R. Hino, N. Umino, A. Nishizawa

日本地球惑星科学連合2016年大会　2016/05
Spatiotemporal changes in the b-value along the plate interface before and after the 2011 Tohoku earthquake constrained by ocean bottom seismic network: Post-Tohoku

Nakatani,Y, K. Mochizuki, M. Shinohara, T. Yamada, H. Shiobara, R. Hino, R. Azuma, Y. Ito, Y. Murai, T. Sato, K. Uehira, T. Shimbo, H. Yakiwara, S. Kodaira, Y. Machida, K. Hirata, H. Tsushima

日本地球惑星科学連合2016年大会　2016/05
Seismic monitoring in the northern source region of the 2011 Tohoku-oki earthquake by using long-term OBSs

Shinohara ,M, T. Yamada, K. Mochizuki, T. Akuhara, Y. Nakatani, H. Shiobara, Y. Murai, S. Hiratsuka, R. Hino, Y. Ohta, R. Azuma, T. Sato, Y. Ito, Y. Yamashita, K. Nakahigashi, T. Teraoka, H. Yakiwara

日本地球惑星科学連合2016年大会　2016/05
Amplitude changes of the seismic reflected phases from the plate interface before and after the 2011 Tohoku earthquake around its northern limit region as revealed by active seismic surveys

Ishihara,K, K. Mochizuki, T. Yamada, M. Shinohara, Y. Yamashita, R. Azuma, R. Hino, T. Sato, Y. Murai, H. Yakiwara

日本地球惑星科学連合2016年大会　2016/05
精密音響測距による日本海溝を挟んだ相対運動の検出

山本龍典, 日野亮太, 木戸元之, 太田雄策, 久保田達矢, 富田史章, 太田和晃, 長田幸仁

日本地球惑星科学連合2016年大会　2016/05
Seismic observations using ocean bottom seismometer arrays off-shore Miyagi, northeast Japan

Ohta,K, Y. Ito, R. Hino, Y. Ohta, R. Azuma, M. Shinohara, K. Mochizuki, T. Sato, Y. Murai

日本地球惑星科学連合2016年大会　2016/05
Seismic structure of northwest of the Pacific Plate by an airgun-ocean bottom seismometer survey data applied seismic interferometry

Otomo, S, R. Hino, R. Azuma, G. Fujie, S. Kodaira

日本地球惑星科学連合2016年大会　2016/05
Retrospective evaluation of tFISH/RAPiD performance: tsunami forecasting based on offshore tsunami and GNSS data

Horiuchi, A, R. Hino, Y. Ohta, H. Tsushima

日本地球惑星科学連合2016年大会　2016/05
Detecting tectonic tremor through frequency scanning and polarization analyses at a single station in the Japan Trench subduction zone International-presentation

AGU Chapman Conference on the slow slip phonemena　2016/02/24
Seafloor geodetic observations for detection of various slow-slips before and after the 2011 Tohoku-oki earthquake: Review and prospect International-presentation

AGU Chapman Conference on the slow slip phonemena　2016/02/24
Detection of interplate earthquakes in the source area of the 2011 Tohoku earthquake using extensive seafloor aftershock observation data International-presentation

AGU 2015 Fall Meeting　2015/12/19
Periodic slow slip and megathrust zone earthquakes in northeastern Japan International-presentation

AGU 2015 Fall Meeting　2015/12/18
Postseismic deformation of the 2011 Tohoku-Oki earthquake revealed by repeated GPS/Acoustic observations International-presentation

AGU 2015 Fall Meeting　2015/12/17
Velocity- and slip-dependent weakening in simulated fault gouge: Implications for coexistence of slow slip with fast slip International-presentation

AGU 2015 Fall Meeting　2015/12/16
Further evidence for the occurrence of tectonic tremor in the Japan Trench subduction zone International-presentation

AGU 2015 Fall Meeting　2015/12/16
Long-term continuous observation of vertical gradient of ocean temperature directly above the deep ocean floor International-presentation

AGU 2015 Fall Meeting　2015/12/16
Spatial partitioning between co- and post-seismic slip of the 2011 Tohoku Earthquake based on seafloor and terrestrial geophysical observations International-presentation

AGU 2015 Fall Meeting　2015/12/16
Fault model of the intraplate doublet on Dec. 7 2012 derived from near- and far-field tsunami records and its implication for the post-2011 stress state International-presentation

AGU 2015 Fall Meeting　2015/12/15
2011年東北地方太平洋沖地震震源域北限周辺における人工震源地震波構造調査によるP波速度構造

日本地震学会2015年度秋季大会　2015/10/28
2011年東北沖地震震源域における海底大規模余震観測データを用いたプレート境界型地震の検出

日本地震学会2015年度秋季大会　2015/10/28
Polarization解析を用いた東北沖浅部微動の検出に向けて

日本地震学会2015年度秋季大会　2015/10/28
2011年東北地方太平洋沖地震前に海溝軸近傍で観測された低周波微動の検証

日本地震学会2015年度秋季大会　2015/10/28
深海底直上における海水温鉛直勾配の長期連続観測

日本地震学会2015年度秋季大会　2015/10/28
GPS/A海底地殻変動観測による2011年東北沖地震の余効変動の解明

日本地震学会2015年度秋季大会　2015/10/28
深海調査で迫るプレート境界断層浅部すべりの謎

日本地震学会2015年度秋季大会　2015/10/28
2012年スラブ内ダブレット地震（Mw7.2, 7.2）の津波記録から推定した震源モデルの再検討

日本地震学会2015年度秋季大会　2015/10/28
日本海溝を挟んだ音響測距観測：長期・長基線・多点観測に向けて

日本測地学会第124回講演会　2015/09/25
Detecting tectonic tremor through frequency scanning and polarization analyses at a single station in the Japan Trench subduction zone International-presentation

Joint workshop on slow earthquakes 2015 in Nagoya　2015/07/16
海底地殻変動観測によって捉えた2011年東北沖地震の余効変動

日本地球惑星科学連合連合大会２０１５年大会　2015/05/28
2011年東北地方太平洋沖地震震源域北限周辺における人工震源地震波構造調査による浅部P 波速度構造

日本地球惑星科学連合連合大会２０１５年大会　2015/05/27
近地海底圧力観測記録によって推定した2012 年12 月7 日三陸沖地震（Mw7.3）に伴う津波の波源

日本地球惑星科学連合連合大会２０１５年大会　2015/05/27
海底地震計を用いた2011 年東北沖地震震源域における地震活動モニタリング

日本地球惑星科学連合連合大会２０１５年大会　2015/05/26
2011年東北沖地震の震源域海底で起こったこと:海底長期観測の成果と展望

日本地球惑星科学連合連合大会２０１５年大会　2015/05/26
Small low-frequency tremor coincident with slow slip events near the Japan Trench International-presentation

日本地球惑星科学連合連合大会２０１５年大会　2015/05/24
海底地殻変動観測による東北地方太平洋沖地震の余効変動検出

日本地球惑星科学連合連合大会２０１４年大会　2015/05/02
高潮流域下におけるリアルタイム津波・地殻変動観測ブイシステムの海域試験

日本地球惑星科学連合連合大会２０１４年大会　2015/05/02
GEONETリアルタイム解析システム（REGARD）の全国対応

日本地球惑星科学連合連合大会２０１４年大会　2015/05/01
稠密海底地震計アレイ観測データを用いた2011年東北沖地震発生前後の震源南限域における地震活動に関する研究

日本地球惑星科学連合連合大会２０１４年大会　2015/04/30
ハイパフォーマンスコンピューティングが拓く固体地球科学の未来：導入

日本地球惑星科学連合連合大会２０１４年大会　2015/04/30
ハイパフォーマンスコンピューティングが拓く固体地球科学の未来ー総合討論

日本地球惑星科学連合連合大会２０１４年大会　2015/04/30
2011 年東北地方太平洋沖地震の発生直後に震央域で観測された海底水温の急上昇について

日本地球惑星科学連合連合大会２０１４年大会　2015/04/30
海陸地殻変動観測に基づく2011年東北地方太平洋沖地震の余効変動モデル

日本地球惑星科学連合連合大会２０１４年大会　2015/04/30
2011年東北地方太平洋沖地震の余効変動

平成２６年度東北地域災害科学研究集会　2015/01/10
地殻変動観測を応用した津波即時予測の試み

平成２６年度東北地域災害科学研究集会　2015/01/10
Dominance of Viscoelastic Relaxation after the 2011 Tohoku Earthquake Revealed by Seafloor GPS Observations International-presentation

American Geophysical Union 2014 Fall Meeting　2014/12/19
Transient crustal deformation due to slow slip observed at sea bottom in the Hikurangi margin International-presentation

American Geophysical Union 2014 Fall Meeting　2014/12/19
JDASH – Japan Trench Deep-sea Research for Assessing Shallow Seismic Slips and Their History International-presentation

American Geophysical Union 2014 Fall Meeting　2014/12/19
Direct-path acoustic ranging across the Japan Trench axis, Adjacent to the Large Shallow Thrusting in 2011 Tohoku-Oki earthquake International-presentation

American Geophysical Union 2014 Fall Meeting　2014/12/18
Fast Displacement Rate of the Subducting Pacific Plate After the 2011 Tohoku-oki Earthquake Measured by GPS/Acoustic Surveys International-presentation

American Geophysical Union 2014 Fall Meeting　2014/12/18
Fault modeling of the Mw 7.0 shallow intra-slab strike-slip earthquake occurred on 2011 July 10th using near-field tsunami record International-presentation

American Geophysical Union 2014 Fall Meeting　2014/12/18
Development of real-time mobile buoy observation system for tsunami and crustal movement International-presentation

American Geophysical Union 2014 Fall Meeting　2014/12/18
GPS/Acoustic Observations Along the Japan Trench for Postseismic deformation after the 2011 Tohoku-Oki Earthquake International-presentation

American Geophysical Union 2014 Fall Meeting　2014/12/18
Spatial distribution of earthquakes around the southern end of the co-seismic slip of the 2011 Tohoku Earthquake International-presentation

American Geophysical Union 2014 Fall Meeting　2014/12/18
Recent development for near-field tsunami forecasting from real time GNSS and offshore tsunami data International-presentation

American Geophysical Union 2014 Fall Meeting　2014/12/17
Real-time tsunami innudation forecasting and damage mapping towards enhancing tsunami saster regiliency International-presentation

American Geophysical Union 2014 Fall Meeting　2014/12/16
A trial estimation of frictional properties and propagation process by focusing on temporal aperiodicity off Kamaishi just after the 2011 Tohoku Earhthquake International-presentation

American Geophysical Union 2014 Fall Meeting　2014/12/15
Revisiting the Interplate Coupling Beneath the Northeast Japan Before the 2011 Tohoku Earthquake (M9.0) Based on Terrestrial and Seafloor Geodetic Observations International-presentation

American Geophysical Union 2014 Fall Meeting　2014/12/15
2011 年東北地方太平洋沖地震の地震時すべりと余効すべりの空間的相補性

日本地震学会2014年度秋季大会　2014/11/26
白鳳丸KH-13-5次航海による2011年東北沖地震震源域北限周辺における人工震源構造調査（序報）

日本地震学会2014年度秋季大会　2014/11/26
OBS観測による2011年東北沖地震以降の宮城沖日本海溝海溝軸周辺および海溝海側の地震活動

日本地震学会2014年度秋季大会　2014/11/25
2011年東北沖地震で発生した最大余震周辺の微小地震活動

日本地震学会2014年度秋季大会　2014/11/25
Transient crustal deformation due to slow slip observed on ocean bottom pressure recorders in the Hikurangi margin

日本地震学会2014年度秋季大会　2014/11/24
地震活動から見る2011年東北沖地震の震源域南限

日本地震学会2014年度秋季大会　2014/11/24
巨大地震発生域の固着回復過程の解明にむけた日本海溝軸を挟む海底間音響測距観測

日本地震学会2014年度秋季大会　2014/11/24
GPS音響結合方式によって計測された東北沖地震後の太平洋プレートにおける高変位速度

日本地震学会2014年度秋季大会　2014/11/24
自己浮上式海底水圧計データを用いた2011年東北地方太平洋沖地震の津波波源の推定

日本地震学会2014年度秋季大会　2014/11/24
日本海溝沿いの東北沖地震後の余効変動検出に向けた海底地殻変動繰り返し観測

日本地震学会2014年度秋季大会　2014/11/24
係留ブイを用いたGPS/音響測距結合方式によるリアルタイム海底地殻変動連続観測の精度評価と実用化に向けた課題

日本地震学会2014年度秋季大会　2014/11/24
リアルタイムGPS解析によって推定された震源断層解の不確実性にもとづいた津波浸水予測精度の評価

日本地震学会2014年度秋季大会　2014/11/24
海陸地殻変動観測に基づく2011年東北地方太平洋沖地震の余効変動の解析

日本測地学会第122回講演会　2014/11/07
海底地殻変動観測による2011年東北沖地震後の太平洋プレートにおける高変位速度の検出

日本測地学会第122回講演会　2014/11/05
東北地方太平洋沖地震後の日本海溝沿いの海底地殻変動

日本測地学会第122回講演会　2014/11/05
リアルタイムGNSSデータを用いたCMT解の推定手法

日本測地学会第122回講演会　2014/11/05
津波監視および海底地殻変動観測用係留ブイにおけるGPSデータの精度評価

日本測地学会第122回講演会　2014/11/05
Spatial Distribution of Earthquakes Around the Southern Japan Trench After the 2011 Tohoku Earthquake International-presentation

2014 Asia Oceania Geosicences Society　2014/08/01
Concept of the New Real-time Observation System for Tsunami and Crustal Movement International-presentation

2014 Asia Oceania Geosicences Society　2014/08/01
Aftershock Distribution in the Northern Source Region of the 2011 Tohoku Earthquake by Long-term Ocean Bottom Seismometers International-presentation

2014 Asia Oceania Geosicences Society　2014/08/01
A Trial Monitoring of Seismic Coupling and Crustal Deformation by Focusing on Shallow Slow Earthquakes International-presentation

2014 Asia Oceania Geosicences Society　2014/07/31
Crustal Deformation in the Rupture Area of the 2011 Tohoku-oki Earthquake — Preseismic, Coseismic, and Postseismic Deformation International-presentation

2014 Asia Oceania Geosicences Society　2014/07/31
Episodic Tremor and Slip Occurred Near the Japan Trench Prior to the 2011 Tohoku-oki Earthquake International-presentation

2014 Asia Oceania Geosicences Society　2014/07/31
A Study on Seismicity Before and After the 2011 Tohoku Earthquake Around its Southern Boundary Using Dense Ocean-bottom Seismic Array Data International-presentation

2014 Asia Oceania Geosicences Society　2014/07/31
The Postseismic Deformation of the 2011 Tohoku-oki Earthquake Observed by Repeated GPS/Acoustic Surveys International-presentation

2014 Asia Oceania Geosicences Society　2014/07/31
Introduction for Creating Future of Solid Earth Science with High Performance Computing International-presentation

2014 Asia Oceania Geosicences Society　2014/07/29
Discussion for Creating Future of Solid Earth Science with High Performance Computing International-presentation

2014 Asia Oceania Geosicences Society　2014/07/29
Modelling of the Postseismic Deformation Associated with the 2011 Off the Pacific Coast of Tohoku Earthquake Based on Terrestrial and Seafloor Geodetic Observations International-presentation

2014 Asia Oceania Geosicences Society　2014/07/28
Achievement of the Project for Advanced GPS/Acoustic Survey in the Last Four Years International-presentation

International Symposium on Geodesy for Earthquake and Natural Hazard (GENAH 2014)　2014/07/24
Postseismic Movement of the 2011 Tohoku-oki Earthquake Revealed by Repeated GPS/Acoustic Observations International-presentation

International Symposium on Geodesy for Earthquake and Natural Hazard (GENAH 2014)　2014/07/24
Interplate Coupling in and Around the Rupture Area of the 2011 Tohoku Earthquake (M9.0) Before its Occurrence Based on Terrestrial and Seafloor Geodetic Observations International-presentation

International Symposium on Geodesy for Earthquake and Natural Hazard (GENAH 2014)　2014/07/24
Inspection of Continuous Seafloor Veritical Deformation Records Prior to the 2011 Tohoku Earthquake for Short-term Precursory Events International-presentation

International Symposium on Geodesy for Earthquake and Natural Hazard (GENAH 2014)　2014/07/24
Development and examination of new methods for traveltime detection in GPS/A geodetic data to high-precise and automated analysis International-presentation

International Symposium on Geodesy for Earthquake and Natural Hazard (GENAH 2014)　2014/07/23
A trial monitoring of seismic coupling and crustal deformation by focusing on shallow slow earthquakes International-presentation

International Symposium on Geodesy for Earthquake and Natural Hazard (GENAH 2014)　2014/07/23
Buoy Platform Development for Observation of Tsunami and Crustal deformation International-presentation

International Symposium on Geodesy for Earthquake and Natural Hazard (GENAH 2014)　2014/07/23
Fault Modeling of the M-7 Earthquakes Using the Records of Ocean Bottom Pressure Gauges International-presentation

International Symposium on Geodesy for Earthquake and Natural Hazard (GENAH 2014)　2014/07/23
tFISH/RAPiD: Rapid Improvement of Near-Field Tsunami Forecasting Based on Offshore Tsunami Data by Incorporating Onshore GNSS Data International-presentation

International Symposium on Geodesy for Earthquake and Natural Hazard (GENAH 2014)　2014/07/23
Seafloor crustal movement monitoring at Japan Trench axis using a direct-path acoustic ranging system International-presentation

International Symposium on Geodesy for Earthquake and Natural Hazard (GENAH 2014)　2014/07/23
Heterogeneity of frontal structure of overriding plate controls co-seismic megathrust slip distribution in trench axial zone, Japan Trench and other subduction zones International-presentation

AGU 2013 Fall Meeting　2013/12/09
Tsunami-genic turbidity currents: observation and estimation of flow conditions International-presentation

AGU 2013 Fall Meeting　2013/12/09
Seismicity detection around the subduting seamount off Ibaraki the Japan Trench using dense OBS array data International-presentation

AGU 2013 Fall Meeting　2013/12/09
The Great 1933 Sanriku-oki Earthquake: Possible Compound Rupture of Outer Trench Slope and Triggered Interplate Seismicity International-presentation

AGU 2013 Fall Meeting　2013/12/09
Comparison of two shallow episodic tremor and slip events within the coseismic slip area of the 2011 Tohoku-Oki earthquake International-presentation

AGU 2013 Fall Meeting　2013/12/09
Seismicity and state of stress near the Japan Trench axis off Miyagi, northeast Japan, after the 2011 Tohoku-Oki earthquake International-presentation

AGU 2013 Fall Meeting　2013/12/09
Geodetic characteristic of the postseismic deformation following the interplate large earthquake along the Japan Trench International-presentation

AGU 2013 Fall Meeting　2013/12/09
The detectability of slow earthquakes in shallower part of subduction zone around Tonankai earthquake by the Dense Oceanfloor Network system for Earthquakes and Tsunamis (DONET) International-presentation

AGU 2013 Fall Meeting　2013/12/09
The development of the self pop-up ocean bottom pressure gauge (OBP) with precision thermometers attached International-presentation

AGU 2013 Fall Meeting　2013/12/09
An accuracy assessment of realtime GNSS time series toward semi- real time seafloor geodetic observation International-presentation

AGU 2013 Fall Meeting　2013/12/09
Reprocessed records of seafloor vertical motion prior to the 2011 Tohoku earthquake International-presentation

AGU 2013 Fall Meeting　2013/12/09
Postseismic deformation associated with the 2011 Tohoku Earthquake (M9.0) based on terrestrial and seafloor geodetic observations International-presentation

AGU 2013 Fall Meeting　2013/12/09
Ocean bottom pressure records of the 2011 Tohoku-Oki earthquake International-presentation

11th SEGJ International Symposium　2013/11/18
海底地殻変動観測による太平洋プレートの沈み込み速度検出の試み

日本測地学会第120回講演会　2013/10/29
海底圧力観測における2011年東北地方太平洋沖地震の余効変動

日本測地学会第120回講演会　2013/10/29
日本海溝における海底GPS集中観測の速報

日本測地学会第120回講演会　2013/10/29
海陸測地観測データに基づく2011年東北地方太平洋沖地震の余効すべりの時空間発展（その３）

日本地震学会2013年度秋季大会　2013/10/07
Investigation on the postseismic deformation associated with the 2011 Tohoku Earthquake basd on terrestrial and seafloor geodetic observations - to evaluate the further seismic hazard potential on tha plate interface beneath the northeastern Japanese Isla International-presentation

IAG Scientific Assembly 2013　2013/09/04
Real-time crustal deformation monitoring based on RTK-GPS: Application to 2011 Tohoku earthquake and its improvement for implementation to actual GPS network International-presentation

IAG Scientific Assembly 2013　2013/09/04
Seafloor geodetic monitoring in the hypocentral area of the 2011 Great Tohoku Earthquake International-presentation

Joint Assembly IAHS-IAPSO-IASPEI　2013/07/21
2011年東北地方太平洋沖地震前後の海底上下変動

日本地球惑星科学連合2013年大会　2013/05/19
海底GPS手法による海底地殻変動観測高度化に向けた新たな取り組み

日本地球惑星科学連合2013年大会　2013/05/19
セミリアルタイム海底地殻変動観測に向けたGNSS測位精度評価

日本地球惑星科学連合2013年大会　2013/05/19
日本海溝沿いの海底地殻変動観測点の強化と観測の開始について

日本地球惑星科学連合2013年大会　2013/05/19
Characteristic of the postseismic deformation following the 2011 Sanriku-Oki earthquake (Mw 7.2) by comparing the 1989 and 1992 Sanriku-Oki events International-presentation

EGU General Assembly 2013　2013/04/07
3D Seismic Velocity Structure along the southwestern Kuril Trench International-presentation

7th general assembly of Asian seismological commission and seismological society of Japan, 2008 Fall meeting　2008/11
3D Seismic Structure of the Forearc Area in Eastern Hokkado, Japan, by Using Ocean Bottom Seismographic Observation International-presentation

13th International symposium on deep seismic profiling of the continents and their margins　2008/06
海陸地震観測データを用いた北海道南東部の地殻・上部マントル構造

地球惑星科学連合2008年大会　2008/05
高密度地震観測ネットワーク時代における海底地震観測

地球惑星科学連合2008年大会　2008/05
Ocean bottom seismographic study on the 2005 off-Sanriku intralate earthquake (M7.1) occurred in the outer rise of the Japan Trench International-presentation

R. Hino, Y. Ito, Y. Yamamoto, K. Suzuki, H. Tsushima, S. Suzuki, M. Miyashita, T. Tomori, M. Arizono, G. Tange

AGU 2007 Fall Meeting　2007/12
2005年に三陸沖 trench outer rise域で発生したプレート内地震（M7.1）の余震分布

日本地震学会2007年秋期大会　2007/10
3D Seismic Velocity Structure Around the Rupture Area of the 1968 Tokachi-Oki Earthquake (Mw 8.3), northeastern Japan International-presentation

Hino, R, A. Kuwano, Y. Yamamoto, A. Hasegawa, T. Yamada, T. Kanazawa, M. Shinohara, K. Nakahigashi, K. Mochizuki, S. Sakai, Y. Murai, T. Takanami, M. Yamashita

AGU 2006 Fall Meeting　2006/12
Seismic structure of the seismogenic subduction plate interface in the northeastern Japan arc

日本地球惑星科学連合2006年大会　2006/05
Ocean bottom seismographic observation of the aftershock activity accompanied with the 2005 off Miyagi Earthquake (M 7.2)

日野亮太, 西野実, 桑野亜佐子, 山本揚二朗, 鈴木健介, 金沢敏彦, 山田知朗, 中東和夫, 望月公廣, 篠原雅尚, 青木元, 田中昌之, 荒木英一郎, 小平秀一, 藤江剛, 金田義行

日本地球惑星科学連合2006年大会　2006/05
Spatio-temporal variation of the aftershock activity following the 2021 and 2022 intraslab earthquakes in off-Fukushima prefecture

Osawa, R., R. Hino, K. Yoshida

American Geophysical Union Annual Meeting 2024　2024/12
Development of a Mobile OBP Observation System with a Self-calibration Function of Long-term Sensor Drift

Ohta, Y., R. Hino, M. Sato, S. Suzuki, H. Kajikawa, S. Nishida, H. Matsumoto, Y. Machida, E. Araki

American Geophysical Union Annual Meeting 2024　2024/12
Evaluation of shallow tremor distribution in the northern Japan Trench using relative hypocenter determination\

Minamoto, K., R. Hino, K. Matsumoto

American Geophysical Union Annual Meeting 2024　2024/12
The spatiotemporal evolution of aseismic slips before the 2011 Tohoku earthquake based on the reprocessed OBPR data

Hirata, K., Hino, R., Yamada, T., Minamoto, K., Otsuka, H., Ohta, Y., Kubota, T.

American Geophysical Union Annual Meeting 2024　2024/12
A Thin and Weak Oceanic Lithosphere-Asthenosphere Boundary (LAB) Inferred From Crustal Deformation Following the 2011 Mw=9 Tohoku Earthquake

T. Sun, F. Tomita, T. Iinuma, R. Hino, M. Kido, Y. Ohta, J. He, K. Wang

American Geophysical Union Annual Meeting 2024　2024/12
海底間音響測距による根室沖千島海溝海溝軸近傍における地殻変動の評価

松本祥太郎, 木戸元之, 日野亮太, 太田雄策

日本地震学会2024年度秋季大会　2024/10

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本学修士学生
岩手県三陸沖におけるDASデータを用いた制御地震探査：海域浅部P波速度構造の高分解能推定

福島駿, 篠原雅尚, 山田知朗, 日野亮太, 東龍介, 伊藤喜宏, 山下裕亮

日本地震学会2024年度秋季大会　2024/10
日本海溝北部における浅部テクトニック微動の相対震源決定を用いた高精度震源分布

源孝祐, 日野亮太, 松本一駿

日本地震学会2024年度秋季大会　2024/10

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本学修士学生
OBPRデータ再解析による東北地方太平洋沖地震の最大前震（M 7.3）に伴う余効変動の時空間的発展

平田京輔, 日野亮太, 山田太介, 源孝祐, 大塚英人, 太田雄策, 久保田達矢

日本地震学会2024年度秋季大会　2024/10

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本学修士学生
令和６年能登半島地震震源域における応力降下量の空間変化

高橋努, 藤江剛, 篠原雅尚, 日野亮太, 小平秀一, 山田知朗, 悪原岳, 尾鼻浩一郎, 東龍介, 山下裕亮, 村井芳夫, 馬塲久紀, 八木原寛

日本地震学会2024年度秋季大会　2024/10
日本海溝北部における浅部微動分布とS波速度構造の空間相関

髙木涼太, 東龍介, 日野亮太, 西田究, 篠原雅尚

日本地震学会2024年度秋季大会　2024/10
緊急海底地震観測による令和６年能登半島地震東部震源域における精密余震活動

篠原雅尚, 日野亮太, 高橋努, 尾鼻浩一郎, 小平秀一, 東龍介, 山田知朗, 悪原岳, 山下裕亮, 蔵下英司, 村井芳夫, 一瀬建日, 中東和夫, 馬場久紀, 太田雄策, 伊藤喜宏, 八木原寛, 仲谷幸浩, 藤江剛, 佐藤利典, 塩原肇, 望月公廣, 酒井慎一, 白鳳丸KH, および KH, 乗船研究者

日本地震学会2024年度秋季大会　2024/10
GNSS-音響測距結合方式の海底地殻変動観測における無人機の活用

飯沼卓史, 木戸元之, 福田達也, 太田雄策, 富田史章, 日野亮太, 高橋浩晃, 堀高峰, 横田裕輔

日本地震学会2024年度秋季大会　2024/10
短周期海底地震計記録を用いた令和6年能登半島地震余震のモーメントテンソル解析

悪原岳, 篠原雅尚, 山田知朗, 東龍介, 日野亮太, 尾鼻浩一郎, 高橋努, 藤江剛, 小平秀一, 村井芳夫, 馬塲久紀, 山下裕亮, 八木原寛

日本地震学会2024年度秋季大会　2024/10
S-netデータを用いた精密震源決定による2021年M6.0茨城県沖地震の前震活動の時空間分布

松本圭晶, 吉田圭佑, 内田直希, 日野亮太

日本地震学会2024年度秋季大会　2024/10

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本学博士学生
GNSS・GNSS音響・小繰り返し地震観測によって捉えられた2011年東北沖地震に伴う余効変動の全体像

富田史章, Sun Tianhaozhe, 飯沼卓史, 木戸元之, 太田雄策, 内田直希, 日野亮太, Wang Kelin

日本地震学会2024年度秋季大会　2024/10
2021・2022年福島県沖スラブ内地震の余震活動の時空間変化

大澤亮, 日野亮太, 吉田圭佑

日本地震学会2024年度秋季大会　2024/10

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本学修士学生
根室沖でのGNSS音響観測から示唆されるプレート境界浅部でのすべり欠損

富田史章, 太田雄策, 木戸元之, 飯沼卓史, 黒須直樹, 大園真子, 高橋浩晃, 日野亮太

日本地球惑星科学連合2024年大会　2024/05
SPEPS特集「10 years after the 2011 Tohoku earthquake: A milestone of solid earth science」 Invited

日野亮太, 飯沼卓史, 小平秀一, 山田昌樹, rgmann Rolan, 松澤暢

日本地球惑星科学連合2024年大会　2024/05

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本人
No significant deformation at the axis of the Kuril Trench off Nemuro based on Acoustic Distant Meter survey

2024/05
Simultaneous hypocenter determination of shallow tremors and regular earthquakes in the northern Japan Trench

2024/05
Association between regular small earthquakes and tectonic tremors along the northern Japan Trench

2024/05
GNSS音響観測位における不確定性を考慮した東北沖における上下変動場評価

富田史章, 木戸元之, 飯沼卓史, 太田雄策, 日野亮太

日本地球惑星科学連合2024年大会　2024/05
ウェーブグライダーを用いたGNSS-音響測距結合方式の海底地殻変動観測（その５）

飯沼卓史, 木戸元之, 福田達也, 太田雄策, 富田史章, 日野亮太, 高橋浩晃, 堀高峰, 佐藤大祐

日本地球惑星科学連合2024年大会　2024/05
ガラス球海底地震計の長期観測化と広帯域観測対応化

2024/05
SSE activity before the 2011 Tohoku Earthquake: A revisit based on the reprocessed OBPR data

2024/05
稠密海底地震観測データに基づく日本海溝北部の3次元S波速度構造推定

高木涼太, 東龍介, 日野亮太, 西田究, 篠原雅尚

日本地球惑星科学連合2024年大会　2024/05
Structural controls on the spatial extent of tectonic tremors in Kumano-nada

2024/05
Hypocenter determination using S-net data of shallow earthquakes off Fukushima and Ibaraki prefectures, Japan

2024/05
地震波干渉法による日本海溝北部の海底下構造の時空間変化とその解釈

佐藤豪大, 東龍介, 高木涼太, 日野亮太, 篠原雅尚

日本地球惑星科学連合2024年大会　2024/05
Shallow tectonic tremor activity in Off Sanriku, near the Japan Trench: does tremor occur in the tsunami earthquake source regions?

2024/05
Detection of slow slip event from seafloor pressure record using PCA: A case study in Hikurangi Subduction zone

2024/05
USING SEAFLOOR GEODESY TO DETECT SLOW-SLIP-RELATED VERTICAL DEFORMATION AT THE HIKURANGI SUBDUCTION ZONE: INSIGHTS FROM SELF-CALIBRATING PRESSURE SENSORS AND OCEAN MODELS

Woods, K, S. Webb, Y. Ito, C. Collins, N. Palmer, R. Hino, M. Savage, D. Saffer, E. Davis, D. Barker

Ocean Science Meting 2022

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Industrial Property Rights 3

津波浸水予測システム，制御装置，並列計算システムの制御方法及びプログラム

越村俊一, 小林広明, 日野亮太, 太田雄策, 撫佐昭裕, 佐藤佳彦, 村嶋陽一, 鈴木崇之, 井上拓也, 村田泰洋, 加地正明

特許6362178

Property Type: Patent
津波浸水予測システム、データ処理サーバ、津波浸水予測の依頼方法及びプログラム

越村俊一, 小林広明, 日野亮太, 太田雄策, 撫佐昭裕, 佐藤佳彦, 村嶋陽一, 鈴木崇之, 井上拓也, 村田泰洋, 加地正明

特許6323880

Property Type: Patent
津波浸水予測システム、制御装置、津波浸水予測の提供方法及びプログラム

越村俊一, 小林広明, 日野亮太, 太田雄策, 撫佐昭裕, 佐藤佳彦, 村嶋陽一, 鈴木崇之, 井上拓也, 村田泰洋, 加地正明

P6161130

Property Type: Patent

Research Projects 26

海底地殻変動観測技術の高度化 Competitive

2008/04 - Present
リアルタイム津波予測システムの開発と高度化 Competitive

2008/04 - Present
Mechanism of large tsunamigenic fault slip without stress drop during the 2011 Tohoku-oki earthquake

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

Category: Grant-in-Aid for Scientific Research (A)

Institution: Tohoku University

2024/04/01 - 2028/03/31
Head and tail of massive earthquakes: Mechanism arresting growth of interpolate earthquakes

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (S)

Category: Grant-in-Aid for Scientific Research (S)

Institution: Tohoku University

2019/06 - 2024/03
Do slow-slip events reach to the axis of the Japan Trench?

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A)

Category: Grant-in-Aid for Scientific Research (A)

Institution: Tohoku University

2019/04 - 2020/03
Development of models for deformation and fault slip processes in the island arc crust

Bunichiro Shibazaki, HINO Ryota, KIDO Motoyuki, HORI Takane, ARIYOSHI Keisuke, SASAJIMA Ryohei

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)

Category: Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)

Institution: Building Research Institute

2014/07/10 - 2019/03/31

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We advanced the understanding of the deformation process before and after the 2011 Tohoku-oki earthquake and the generation processes of the large inland earthquakes by reproducing them through numerical modeling. (1) We analyzed and modeled postseismic deformation of the Tohoku-oki earthquake, and reproduced the forearc subsidence in around 100 years before the earthquake and the stress field before and after the earthquake. (2) We analyzed the crustal deformation data of the Japanese island arc, and clarified the strain concentration zones and major fault movements in southwest Japan. We also clarified that the strain concentration process in each region of the Japanese island is controlled by thermal anomaly, crustal fluid, and geological structure. (3) We succeeded in modeling the earthquake cycle by considering fault rheology such as brittle-ductile transition and pressure solution creep, and in reproducing the dynamic rupture propagation of the recent large inland earthquakes.
Slow slip to the trench ?

Ito Yoshihiro, HINO Ryota, OBARA Kazushige, SHINOHARA Masanao, MOCHIZUKI Kimihiro

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A)

Category: Grant-in-Aid for Scientific Research (A)

Institution: Kyoto University

2014/04/01 - 2019/03/31

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We investigated slow slip events in the Hikurangi Margin, New Zealand with ocean bottom pressure observations and numerical modeling based on the observation data. Our results from the pressure data indicated that the slip area of the slow slip event in 2014 reached the trench in the 2014 slow slip event. Our numerical model simulated the dynamic effect on triggering the slow slip event after the 2016 Kaikoura earthquake captured features of the actual slow slip event observed after the mainshock.
Earthquake tsunami generation and inundation: elastic-fluid dynamics and nonlinear wave

Saito Tatsuhiko, HINO Ryota, FUKUYAMA Eiichi

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B)

Category: Grant-in-Aid for Young Scientists (B)

Institution: National Research Institute for Earth Science and Disaster Prevention

2015/04/01 - 2018/03/31

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A theoretical foundation was constructed for tsunami generation, propagation, and inundation. By taking the interaction between fluid and elastic medium into account, we theoretically calculated the pressure change caused by the earthquake and tsunami generation. The contributions of gravity, elasticity, and inertia force during the generation were quantitatively investigated. Moreover, based on this theoretical consequence, we proposed a new numerical method that can simulate more realistic tsunami generation in an elastic medium and the nonlinear inundation with high-resolution (~6 m) bathymetry/topography data. We synthesized the records of ocean-bottom pressure change and ocean-surface displacement together with the inundation into a city area with an anticipated huge earthquake dynamic rupture scenario in the Nankai Trough. These synthesized records are available for the measurement of the performance of our tsunami monitoring and predicting ability.
深海調査で迫るプレート境界浅部すべりの謎～その過去・現在

日野亮太, 小平秀一, 金松敏也, 篠原雅尚, 伊藤喜宏

Offer Organization: 日本学術振興会

System: 科学研究費助成事業特別推進研究

Category: 特別推進研究

Institution: 東北大学

2014 - 2018

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日本海溝南部(茨城県沖)において高分解能反射法地震波探査を実施したほか, 堆積物調査を日本海溝沿いだけではなく千島海溝にまで範囲を拡大して行った. 海底地震・地殻変動観測は, 2011年の地震時すべりが大きかった日本海溝中部域に加えて, 地震時すべりが小さかった南部にも観測域を拡大して実施した. 高分解能地震波探査の結果, 茨城県沖においては沈み込む太平洋プレート上の堆積層が厚く, この特徴は地震時に大規模浅部すべりを起こした日本海溝中部とは異なり, より北部の岩手県沖で見られる特徴に似ている. 今年度の探査海域では, 海山が沈み込んでいることが特徴であるが, その一つである香取海山近傍では, 海溝軸において逆断層性の変形構造が発達していることが認められた. 従来, やや水深が浅い海溝斜面堆積物の年代決定において有効であることが示されている, 堆積物試料に残された古地磁気永年変動の記録が海溝軸堆積層物の年代決定にも適応可能であることが示され、これを活用することにより, 海溝軸にまで及ぶ浅部すべりイベントに対応する堆積層の堆積年代を広域にわたって対比できる見通しがたった。地震時と地震後の地殻変動観測データから地震時すべりと地震後すべりの同時推定を試み, 日本海溝近くで浅部すべりイベントは, 従来の地震・地殻変動観測データに基づく推定に比べて, より北側にまで及んでいることがわかった. 浅部すべりの北限は, 地震探査によって地質構造が南北で大きく変化する位置と良い一致を示す. 海底地震観測データを用いた低周波微動検知手法の高度化を進め, 2011年の浅部すべりイベントの発生以前においては, 通常地震の群発的な活動や地殻変動をともなうようなゆっくりすべりイベントが顕在化する前から, 微動活動が海溝軸近くのプレート境界断層ごく浅部において開始していたことが明らかとなった.
南海トラフＶＳＰによる地震波速度・減衰構造

日野亮太

Offer Organization: 日本学術振興会

System: 科学研究費助成事業新学術領域研究(研究領域提案型)

Category: 新学術領域研究(研究領域提案型)

Institution: 東北大学

2012/04 - 2014/03

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南海トラフ前弧域に位置する熊野灘で2009年に実施されたIODP Exp. 319の際に行った長測線VSPの地震探査データを用いて，同海域の付加帯内の地震波P波減衰率（Qp）を推定した．Qpは海底直下の堆積物内での地震波減衰の影響が大きいために，海底地震観測のデータを用いた推定が困難であり，海域下での値が精度よく推定された研究例は少ない．本研究では，熊野灘の海底下約1,000mの孔内に設置された地震計アレイで観測された人工地震探査の信号の周波数解析を行い，同海域の海底下およそ8kmまでの深さ範囲におけるQpの推定に成功した．Qpの解析にはP波速度構造の情報が必要であるが，これは先行研究と本VSP探査のデータから導いたものを用いた．解析の結果，海底直下の未固結堆積層内のQpの値が36ないし57であると推定された．この値は，北大西洋の海底で推定されている値に近く，こうした値が広域で共通したものである可能性がある．堆積層下側の基盤層内では，Qpは487という高い値を示し，これは陸上の上部地殻層と同程度である．得られた値は，中米コスタリカ沈み込み帯の前弧海底下で推定されたQpより有意に大きい．この違いは，前弧域基盤層の地震波減衰構造が，付加型のテクトニクスが卓越する南海トラフ沈み込み帯と，浸食型テクトニクスに支配されるコスタリカ沈み込み帯との違いを反映している可能性がある．本研究で推定されたQp構造は，今後のこの地域での地下構造やプレート間大地震による強震動予測の研究に重要な情報をもたらす．本研究の成果は，"Qp structure of the accretionary wedge in Kumano Basin, Nankai Trough, Japan, revealed by long offset walk-away VSP"という論文にまとめ，Earth Planets Spaces誌に１月に投稿し，現在査読中である．
Multi-scale types of slow earthquakes based on ocean-bottom geodetic and seismological observations

FUJIMOTO Hiromi, ITO Yoshihiro, ITO Yoshihiro, HINO Ryota

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A)

Category: Grant-in-Aid for Scientific Research (A)

Institution: Tohoku University

2008 - 2012

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We have observed two slow slip events in the Japan subduction zone. The slow slip events was observed in 2008 and 2011 by ocean-bottom geodetic network that had been newly established on the present work. Moderate and large Interpate earthquakes in 2008 and 2011 were preceded by the slow slip events respectively. The slow slip event in 2011 preceded the largest foreshock of the 2011 Tohoku-Oki earthquake. These suggest that slow slip plays an leading role in stress buildup to earthquake generation.
Comprehensive studies for the 2011 off the Pacific coast of Tohoku earthquake

SHINOHARA Masanao, FUJIMOTO Hiromi, KANEDA Yoshiyuki, KODAIRA Syuichi, HIRATA Kenji, MURAI Yoshio, UEHIRA Kenji, YAKIWARA Hiroshi, SATAKE Kenji, TANIOKA Yuichiro, IMAMURA Fumihiko, TAKAHASHI Tomoyuki, KOKETSU Kazuki, HORI Muneo, YASUDA Susumu, MOTOSAKA Masato, KONAGAI Kazuo, SATO Shinji, KAZAMA Motoki, SAKAI Yuki, HINO Ryota, SATO Toshinori, SHIOBARA Hajime, ISHIYAMA Tatsuya, OKAMURA Makoto, TSUJI Yoshinobu, NAKAHARA Hisashi, HONDA Ryo, ASANO Kimiyuki, TAKAHASHI Yoshikazu, GOTO Hiroyuki, MORIKAWA Hitoshi

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

Institution: The University of Tokyo

2011 - 2011

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The ocean bottom seismometers deployed above the source region of the 2011 off the Pacific coast of Tohoku earthquake were recovered and precise aftershock distribution was obtained. The seafloor observations were continued to clear variation of the aftershock activity. The crustal movement after the mainshock was estimated by using seafloor geodetic observations. Seismic reflection surveys revealed seismic structures above the source region. Field surveys for tsunami were carried and slip distribution on the source fault was obtained. Damage of constructions was clarified by filed surveys and widespread survey was also carried out from a view of disaster prevention of urban areas.
Comprehensive studies for the 2011 off the Pacific coast of Tohoku earthquake

SHINOHARA Masanao, MURAI Yoshio, FUJIMOTO Hiromi, HINO Ryota, SATO Toshinori, HIRATA Naoshi, OBARA Kazunari, SHIOBARA Hajime, IIO Yoshihisa, UEHIRA Kenji, MIYAMACHI Hiroki, KANEDA Yoshiyuki, KODAIRA Syuichi, MATSUZAWA Toru, OKADA Tomomi, YAGI Yuji, KOKETSU Kazuki, YAMANAKA Yoshiko, HIRAHARA Kazuro, TANIOKA Yuichiro, IMAMURA Fumihiko, SATAKE Kenji, TANAKA Jun, TAKAHASHI Tomoyuki, OKAMURA Makoto, YASUDA Susumu, KABEYASAWA Toshimi, HORI Muneo, HIRATA Kenji, TSUJI Yoshinobu, TAKAHASHI Yoshikazu, GOTO Hiroyuki, MORIKAWA Hitoshi

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

Institution: The University of Tokyo

2010 - 2010

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The 2011 off the Pacific coast of Tohoku earthquake occurred offshore of northeast Japan region on March 11, 2011, and large ground motion with long duration and huge tsunami damaged human society. To clarify the generation mechanism of this large earthquake, we carried out various observations. Seismic observations in marine and land areas revealed variation of seismic activities in time and space. Geometry of the source was estimated by seismic surveys and ocean bottom crustal movement measurements. In addition, the slip distribution during the mainshock was obtained using various geophysical datasets. Field surveys revealed tsunamis and the generation process of the tsunamis was estimated. Damage of constructions was also clarified and useful information for disaster mitigation in future was obtained.
A study on heterogeneity in the seismic structure within the Pacific plate subducting at the Kuril and Japan Trench

HINO Ryota, MIURA Seiichi, FUJIE Go

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)

Category: Grant-in-Aid for Scientific Research (C)

Institution: Tohoku University

2007 - 2009

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Seismic structure in the Pacific lithosphere around the Japan and Kuril Trenches has been clarified by offshore seismic observations. The results indicate that the seismic velocity in the oceanic crust and uppermost mantle is altered by fracture development accompanied by down-bending of the lithosphere in the subduction process.
Investigation for geodetic detection of variation in crustal deformation near the subduction plate boundary

FUJIMOTO Hiromi, HINO Ryota, MIURA Satoshi, NISHINO Minoru, SHINOHARA Masanao

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)

Category: Grant-in-Aid for Scientific Research (B)

Institution: Tohoku University

2003 - 2006

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The objectives of this research program are to investigate for spatial and temporal variations in crustal deformation induced by the subducting plate motion through seafloor geodetic observation in the vicinity of the subduction plate boundary, and to estimate the repeatability of the seafloor geodetic observation. Repeated precise seafloor positioning based on sea surface KGPS positioning and underwater acoustic ranging has been carried out off Iwate and Miyagi prefectures, and has been initiated off Fukushima Prefecture. Judging from seismic activities off Fukushima, seismic coupling on the plate boundary in the region can be relatively weak. However, land-based GPS observation in these several years suggests strong coupling off Fukushima as well as off Miyagi. Although the estimated error is fairly large in the crustal deformation obtained from two-year observations, the result shows that the seismic coupling off Fukushima is as strong as that off Miyagi. The coupling off Fukushima may possibly show temporal variation. GPS/Acoustic (GPS/A) seafloor positioning off Kii Peninsula detected a large co-seismic crustal movement up to 30 cm associated with the 2004 earthquake (M7.4) off Kii Peninsula. The repeatability of the positioning obtained from an observation for two days is estimated to be about 3-5 cm. This value was larger than the estimated displacements at our GPS/A sites associated with the 2005 earthquake off Miyagi Prefecture. We confirmed that the value can be improved with higher GPS sampling. Long-term ocean bottom pressure monitoring was carried out off Iwate Prefecture under two crossover points of the satellite tracks for altimetry. The results coincide with recent five ocean tide models within 1.3 cm in terms of root sum square of vector differences for eight principal constituents. Although we have acquired know-how for long-term ocean bottom pressure monitoring, we need more research works to get long-term stability of pressure monitoring.
2004年紀伊半島南東沖の地震の余震に関する調査研究

金沢敏彦, 金田義行, 高波鐵夫, 清水洋, 日野亮太, 篠原雅尚

Offer Organization: 日本学術振興会

System: 科学研究費助成事業特別研究促進費

Category: 特別研究促進費

Institution: 東京大学

2004 - 2004

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1.自己浮上式海底地震計による余震観測の実施:紀伊半島南東沖の地震の震源域直上に、10〜15km間隔で自己浮上式海底地震計を25台設置し、約3週間の余震観測を行った。陸域観測網から決定されている前震、本震、余震の震央位置を参考にしながら観測点配置を決め、海洋研究開発機構の研究船かいようで9月に海底地震計の設置を実施、海底地震計の回収は同じく海洋研究開発機構の研究船かいれいで10月に実施した。 2.震源決定のための構造調査の実施:マルチチャンネル反射法地震探査を実施し、余震の震源決定のための構造調査を行った。本研究においては、海洋研究開発機構の研究船かいれいのエアガンアレイシステムと多チャンネルのハイドロフォンストリーマを使用して、マルチチャンネル反射法地震探査を実施すると同時に、同航海で、海底地震計を回収した。 3.データ解析と結果:海底地震計およびマルチチャンネル反射法地震探査のデータ処理を行い。余震の精密な空間分布を求めた。本研究による海域の現場観測によって、陸域の基盤観測網からは観ることのできなかった地震活動の詳細が明らかとなった。余震は南海トラフより沈みこむフィリピン海プレートの内部で発生している。しかもプレート境界に近いプレート浅部にほぼ水平に分布する余震活動と、より深いところにほぼ水平に分布する地震活動の2群に分かれて発生していることが分かった。これら2群に分かれた余震分布が前震、本震、最大余震の断層面に相当しているのではなく、地震のメカニズムからは断層面はこれら2群をつなぐような面であることが想定されている。また陸域の観測データからは南落ちあるいは北落ちの断層面どちらであるかは特定できていなかった。本研究の高精度余震分布によって初めて、地震のメカニズムとも整合する2群をつなぐ本震の断層面を特定することができ、本研究の当初目的は十分に達成した。
プレート境界地震発生層の微細構造と微小地震の空間分布

日野亮太

Offer Organization: 日本学術振興会

System: 科学研究費助成事業

Category: 若手研究(B)

Institution: 東北大学

2001 - 2002

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プレート境界地震の地震活動に対応するプレート境界の地震波反射効率の空間的な変化に関する理解をさらに進めるため,海底地震計によりとらえられたプレート境界面からの広角反射波の波形データに対して反射法地震探査で従来用いられてきた処理手法を適用することにより,反射効率の空間変化のマッピングに成功した.また,人工地震探査によって得られた速度構造を用いて,探査領域で発生する微小地震の詳細な震源分布を求めた.その結果を上記のプレート境界面での地震波反射効率の空間変化と比較すると,顕著な地震活動が低調な領域で特に強い反射波を観測しているという,申請者を含む研究グループが従来主張してきた観測事実をサポートする結果を得た.従来,地震波反射効率と地震活動度の空間的対応関係は,陸上地震観測網によって決定された震源分布との比較に基づいて議論されてきたが,探査域での地震観測によって決定した震源分布を比較対象として用いることができるようになった点で,本研究の結果は重要である.本年度は,東京大学地震研究所用船航海によるエアガン-海底地震計を用いた海底地震観測に参加し,従来の探査域より南側の宮城沖海域において,非常に高品位のプレート境界から広角反射波データを得ることに成功した.将来発生すると予想されている宮城県沖地震震源域の海溝側延長にあってそこでのプレート間カップリング強度の評価は,地震の規模予測の上で重要な課題であるが,本研究で開発したデータ解析手法を用いることによって反射効率の空間変化を求めることができれば有益な知見を与えることになると期待され,本研究期間の終了後も継続して解析/研究を進めていく予定である.
Study on the behavior and nature of the plate boundary around the edges of coupling areas

MATSUZAWA Toru, OKADA Tomomi, HINO Ryota

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)

Category: Grant-in-Aid for Scientific Research (C)

Institution: Tohoku University

1999 - 2002

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Numerical simulations based on the recent frictional constitutive laws indicate that plate boundaries slip quasi-statically in the inter-seismic period especially around the edges of coupling areas. The purpose of this study was to detect the quasi-static slips and investigate the nature. The study revealed that many small repeating earthquakes were occurring on the plate boundary east off the northeastern Japan arc. Using the repeating earthquakes we succeeded in estimating the spatio-temporal distribution of quasi-static slips on the plate boundary. The results indicate that the boundary around the western (deeper) edges of coupling areas slips quasi-statically with a speed of almost the same as the interplate convergence rate. We also revealed that large afterslips had followed the 1994 Far-off-Sanriku earthquake even in the regions close to the Japan trench, which was not detected by the GPS data analyses. Moreover, we found that all the interplate events of M6 or lager had been followed by large afterslips. We also investigated the relation between the structure and seismicity around the trench. We have proposed a model that the property of the oceanic layer 2 strongly affects the seismicity. The slip behavior should be affected by the rigidity as well as the frictional parameters on the boundary. Thus, it is very important for understanding the slip property to investigate the detailed structure on and around the boundary.
Research of a Next-Generation Laser Tsunami Measurement Network system

ITO Hiromasa, HINO Ryota, IMAMURA Fumihiko, NAKAMURA Koichiro, HARA Takefumi, DOBASHI Koji

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A)

Category: Grant-in-Aid for Scientific Research (A)

Institution: Tohoku University

1999 - 2001

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An optical hydraulic-pressure gauge for an optical ocean bottom tsunami meter was developed using a frequency, shifted feedback laser with a rolled fiber sensor based on optical frequency domain reflectometry. Measuring the optical path length of the fiber, the hydraulic pressure is calculated. The sensor consisted of an 870 m-long bare dispersion-shifted fiber rolled on a hollow cylindrical aluminum bobbin, and its pressure sensitivity was confirmed as -2.34 10^<-11> /Pa. The accuracy of distance measurement was 10^<-9> using the frequency shifted feedback laser oscillating at 1.55 μm. Then the accuracy of pressure measurement using this system was 62 Pa, which corresponds to a depth of 6.2 mm and is sufficient performance for tsunami-measurement applications. Moreover, an origin with a field-spread of a tsunami was estimated using the reverse propagation technique analysis. This draws the wave crest lines to the maximum high-water level point and zero-cross point of the first wave of tsunami about each of two ocean bottom tsunami meters, and estimates the intersection as the origin area. As a result of carrying out a simulation about the tsunami network for the Pacific rim, by adding ocean bottom tsunami meters to the Hawaii Islands circumference realized that an origin area could be estimated with less than 20 % of error. On the coast of our country, human life is taken by tsunami and it is inflicting serious material damage frequently. It is indispensable to damage mitigation by tsunami offering exact information promptly. Real-time multi-point measurement is possible by the multiplexing the laser hydraulic pressure gauge using a frequency-shifted feedback laser. A tsunami numerical simulation can grasp correctly the scale and arrival time of tsunami. If the measurement network by the ocean bottom tsunami meter of a wide area based on this research result is realized, an exact tsunami warning can be issued and it is expected to minimize the damage.
プレート境界地震はどこで起こっているのか?-三陸沖の場合-

日野亮太

Offer Organization: 日本学術振興会

System: 科学研究費助成事業奨励研究(A)

Category: 奨励研究(A)

Institution: 東北大学

1998 - 1999

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本研究では、従来「プレート境界地震」と呼ばれているものが、地震波速度構造から「プレート境界」と考えられる面上で実際に発生しているかどうかを、プレート境界近傍の詳細な地震波速度構造と震源の空間分布を解明することを通して検証することを目的としている。対象領域としては,20km以下の深さにおいて活発なプレート境界地震と思われる地震活動が活発である,日本海溝北部陸側斜面域(三陸沖)を選定した. 昨年度に引き続いて,1996,7年度に実施した人工地震探査のデータ解析を進め,地震波速度の分布の他,「プレート境界」面および沈み込む海洋性地殻内部の顕著な反射面の存在を明らかにした.さらに,海底地震計により観測された1992年に発生した「プレート境界」で発生したと考えられる地震の震源を,明らかとなった速度構造を用いて再決定したところ,多くの地震の震源が構造探査データによりイメージされた「プレート境界」面に集中して決定されたが,「プレート境界」面上ではなく,海洋性地殻内部で発生している地震もあることがわかった.こうした海洋性地殻内地震は,「プレート境界面」と海洋性地殻内反射面とに挟まれるように分布する.構造探査データは,海洋性地殻内の反射面からの地震反射波の明瞭度とその場所における地震活動度との間に相関があることを示していることから,従来「プレート境界地震」活動と考えられてきた地震活動には,本研究で見つかったような海洋性地殻内で発生する地震が多く含まれていることが予想される. こうして,本研究の課題である「プレート境界地震はどこで発生しているのか?」という疑問に対し,「プレート境界地震」は「プレート境界」の面上だけでなく、沈み込む海洋性地殻までを含む厚みを持った領域で発生している,という結論を得ることができた.
International Cooperative Research on the mid-Oceanic Ridges

TAMAKI Kensaku, ISEZAKI Nobuhiro, MEVEL Catherrine, NAKANISHI Masao, OOTA Suguru, FUJIMOT Hiromi

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research Grant-in-Aid for international Scientific Research

Category: Grant-in-Aid for international Scientific Research

Institution: the University of Tokyo

1996 - 1998

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This program corresponds to the InterRidge program, an international initiative of mid-oceanic ridge studies. The funds of this program are mainly used for travels of ridge researchers in Japan for participating cruises, attending workshops, program planning meetings, and society meetings. The other part of usage is transportation of instruments for the research cruises. The research cruises that the researchers of this program participated cover the global ridge system including the Juan de Fuca Ridge, the East Pacific Rise, the Mid-Atlantic Ridge, the Southwestern Indian Ridge, the Central Indian Ridge, and the western Pacific back-arc basins ridges. The major achievements were done in the studies in the Southwestern Ridge. Five research cruises were executed at the Southwestern Indian Ridge during this program. Multinarrow bathymetric survey, deep-tow sidescan sonnar survey, gravity and magnetic measurements, ocean bottom seismometer measurements, and bottom rock sampling were done. The compilation of these data sets clearly shows the unique segmentation pattern of this ridge, the ultraslow spreading system with striking heterogeneity of crustal structure and intensively focused magmatism.
Imaging of Mantle Diapir by Seismic Waves

HASEGAWA Akira, MATSUMOTO Satoshi, HINO Ryota, MATSUZAWA Toru, UMINO Norihito, HORIUCHI Shigeki

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)

Category: Grant-in-Aid for Scientific Research (B)

Institution: Tohoku University

1995 - 1997

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We carried out temporary seismic observations in two areas, Nikko area in Tochigi Prefecture and Onikobe area in Miyagi Prefecture, where anomalous seismic structure has been revealed. Based on the analyzes of data by these dense seismic observations or other stationary observation networks, we obtained the following results. Estimation of 3D seismic attenuation structure of the crust and upper mantle shows the existence of the inclined low-Q bodies in the crust and upper mantle. Spatial distribution of the low-Q bodies roughly coincides with that of seismic low-velocity bodies imaged by the travel time tomography. Low-velocity, low-Q bodies detected in the crust of Nikko and Onikobe areas are closely correlated in space with active volcanoes or caldera structure distributing in these areas. Mid-crustal S-wave reflectors have been detected in these areas, and they are also closely related in space with active volcanoes and caldera structure. Seismic low-velocity, low-Q bodies in the mantle wedge corresponding to the mantle diaptr, deep low-frequency microearthquakes and midcrustal S-wave refllectors reflect the root of arc volcanoes, and it is closely related with the occurrence of shallow inland earthquakes above it. Based on these obsservations we have constructed a qualitative model to explain the observed pattern of shallow seismic activity.
Upper Mantle beneath Oceanic Island Arcs

SUYEHIRO Kiyoshi, TAIRA Asahiko, TOKUYAMA Hidekazu, HINO Ryota

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)

Category: Grant-in-Aid for Scientific Research (B)

Institution: The University of Tokyo

1995 - 1996

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The aim of this study was to image the uppermantle heterogeneity beneath an oceanic island arc system using ocean bottom seismographic recordings of teleseismic events by conventional instrumants and by newly developed long-period long-term instrument, amd to geologically interpret the results. We have imaged the low-Q zone above the subducting slab in the Izu-Ogasawara src system and a deep aseismic subducting plate beneath the Solomons arc system using conventional instrumants. The subducting aseismic slab was detected by using teleseismic P-wave traveltime relativeresidual patterns. However, the predominant frequencies of 1 Hz or less are beyond the useful range of conventional OBS(ocean bottom seismograph), so that we developed a new OBS equipped with 1-Hz sensor and 4 GB data capacity for about 3-month recording. We have not yet acquired data with this system yet. The Izu-Ogasawara oceanic arc crust was interpreted to have been produced in an early stage of subduction when relatively hot environement existed. This environment produced Boninites with ample water content and it is interpreted that the re-melting of the lower crust formed the granitic crust.
1995年奄美大島近海の地震活動とその被害に関する調査研究

笠原順三, 角田寿喜, 鈴木貞臣, 平原和朗, 日野亮太, 塩原肇

Offer Organization: 日本学術振興会

System: 科学研究費助成事業総合研究(A)

Category: 総合研究(A)

Institution: 東京大学

1995 - 1995

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1985年10月18日震度V、19日震度IVの地震が奄美大島近海の喜界島周辺で発生した。気象庁によればこれらの地震のそれぞれマグニチュードはM=6.5、6.7であった。また津波波高は1.8m. 1.4mと発表された。過去南西諸島海溝周辺では1911年M8.0の喜界島の地震が発生した。今回の地震は海溝付近のプレート内正断層であったこと、また防災的見知からも地震活動の監視が重要であると判断し、地震、GPSを主とする臨時観測を行った。 1)海底地震-陸上臨時観測、2)強震観測、3)GPS観測、4)津波調査を実施した。海底地震観測は北大、東北大、東大地震研、鹿児島大の大学の他に海上保安庁水路部が参加した。陸上では3台の観測点を設置し鹿児島大学へテレメータをした。18台の海底地震計は水路部の測量船によって設置し、回収は地震研究所の用船により行った。これらの海底・陸上データを併合し、詳細な震源決定を行った。得られた震源分布から、今回の奄美大島近海地震活動は喜界島の南約30km付近に分布する。震源はほぼ東西に75kmの領域で発生した。震源の深さは10〜40kmに分布し、海底まで達する地震はまれであった。陸上だけから決定した震源位置に比べ、15〜20km喜界島よりに決まった。震源分布は遠地地震の波形を用いて菊池等が得たプレート内の正断層地震であることと矛盾しない。津波現地調査から、津波波高は最大3mで喜界島南部の浦原で得られた。また、島の北西部の中里でも2.3mの波高が認められた。GPSは京都大学、東大地震研究所が実施し、既設3点に加え、喜界島に1点を新たに設置し観測を開始し継続中である。GPSについては観測期間がまだ充分でなく引き続き観測と解析を継続する。
International Cooperative Research on the Mid-Ocean Ridges

FUJIMOTO Hiromi, HIRABAYASHI Jun-ichi, FUJII Naoyuki, ISEZAKI Nobuhiro, TANIMOTO Toshiro, MIYASHITA Sumio, TORII Masayuki, TAKEUCHI Akira, HONDA Satoru, URABE Tetsuro, NOGI Yoshifumi, NAGAO Toshiyasu

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research Grant-in-Aid for international Scientific Research

Category: Grant-in-Aid for international Scientific Research

Institution: University of Tokyo

1994 - 1995

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This research program aims international scientific joint researches on the seafloor spreading system in the framework of the IntrerRidge Program, which is an international initiatives to unveil the interdisciplinary activities of the global mid-ocean ridge system. Cooperative researches were carried out in this fiscal year on board five foreign cruises. Three were focused on analysis of seafloor magnetic structures with a shipboard three-component magnetometer (STCM) developed in Japan. Main results are (1) age-dependent variation in the effective depth of the magnetic layr off the West Coast of USA (Melville, USA), (2) variation in discontinuity structures in the slow-spreading Southwestern Indian Ridge (I'Atalante, France), and (3) relationship between magnetic intensity and rock minerals on the fast-spreading Pacific-Antarctic Ridge south of New Zealand (I'Atalante, France). Other two cruises aimed at searching for hydrothermal activities (4) on the Central Indian Ridge (Sonne, Germany), and (5) in the Derugin Basin in the Okhotsk Sea (Gagarinski, Russia). Active vent site still have not been found in the Indian Ocean. Surveys were also carried out on land in Oman ophiolites and found a structure indicating ridge propagation. Another activities supported by this program are participation in the planning activities mainly for for InterRidge Phase-II program. Dr.Tamaki is a member of InterRidge Steering Committee and will lead the planning activities related with back-arc basin researches and construction of midocean ridge digital data bases. Dr.Fujimoto, a member of SCOR WG99 at linked mass and energy fluxes at ridge crests, joined the activities and worked to publish a SCOR WG pamphlet. Another important aspect of this program is to have broaden the scientific community in our country. Big joint sessions on the Earth's spreading systems have been held in the Geophysical Joint Spring Meeting in Japan.
A study of deep structure of volcanoes and crustal earthquakes by seismic observations

HASEGAWA Akira, MATSUMOTO Satoshi, HINO Ryota, UMINO Norihito, MATSUZAWA Tohru, HORIUSHI Shigeki

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research Grant-in-Aid for General Scientific Research (B)

Category: Grant-in-Aid for General Scientific Research (B)

Institution: TOHOKU UNIVERSITY

1992 - 1993

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Possible evidence for manmatic activity in the crust and the uppermost mantle beneath northern Japan has been obtained from seismic observations. Tomographic image of the 3-D seismic velocity structure clearly delineate low-velocity zones, which are continuously distributed from the upper crust just beneath active volcanoes to the upper mantle. They are inclined to the west and nearly parallel to the dip of the subducted oceanic plate. Exceptionally deep (22-40km), low-freqyebcy micro earthquakes have been found at 12 locations around the low-velocity zones beneath volcanoes, suggesting a close relation to the deep magmatic activity. At shallower depth (10-15km) in or around the low-velocity zones, there exist distinct S-wave reflectors. Observed amplitude spectral rations of reflected to direct S-wave show that the reflector has a strong velocity contrast to the surrounding medium and its thickness is in the order of 100m, which suggests that the reflector body is a thin layr filled with partially molten materials. A detailed seismicity study reveals that the cutoff depth for shallow crustal seismicity changes with location and becomes shallow beneath active volcanoes. These observations appear to shed some light on the state of magma at depths and its close relation to shallow seismic activity in subduction zones.

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Social Activities 10

東北地方太平洋沖で起こる地震と津波の科学

くらしと安全B　開催国：日本，開催都市：多賀城市，開催会場：多賀城高校

2023/10/19 - 2023/10/19
東北地方太平洋沖地震の科学

地域未来学　開催国：日本，開催都市：仙台市，開催会場：オンライン

2023/09/30 - 2023/09/30
東北地方太平洋沖地震の科学

地域未来学

2022/10/15 - 2022/10/25

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一般向けオムニバス講義シリーズの分担，仙台市（オンライン開催）
地震・火山研究の最前線に迫る

開催国：日本，開催都市：仙台市，開催会場：NHK文化センター仙台

2024/01/21 -
東北大学復興シンポジウム

2015/03/15 -

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招待講演
地震学夏の学校2014

2014/09/17 -

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招待講演
地球と海洋の学校

2014/09/06 -

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招待講演
第５回震災対策技術展

2014/08/08 -

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招待講演
スーパーサイエンスハイスクール国内研修

2014/06/30 -

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研修会講師
宮城県高校理科研究会

2006/09 -

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研修会講師

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Media Coverage 4

巨大地震海底でプレート調査境界にひずみか

2015/10/11

Type: TV or radio program
サイエンスゼロ海底下1000m!巨大地震の謎を探る

2012/06/19

Type: TV or radio program
NHKスペシャル MEGAQUAKE II "大変動期”最悪のシナリオに備えろ

2012/06/17

Type: TV or radio program
東北地方太平洋沖地震の津波について

2011/04/04

Type: TV or radio program

Other 1

切迫度の高い震源域の先行調査観測

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宮城県沖及び根室沖においては海溝型大地震が発生する切迫度が非常に高く、こうした領域における調査観測は、海溝型大地震の発生準備ならびに直前過程と発生直後のプレート間すべりの拡大様式を理解する上で重要であり、南海トラフ巨大地震の連動性評価に大きく活用できるものである。このため、宮城県沖、根室沖地震の想定震源域において、地震計、水圧計等を用いた長期地殻活動観測・評価を行い、研究対象地震の再来前後の地殻活動評価を、南海トラフで発生する地震の連動発生可能性の評価に反映する。また、「宮城県沖地震における重点的調査観測」（以下、宮城県沖重点）において研究されている地震・地殻変動観測データにもとづくプレート間すべりのモニタリング技術を取り入れ、地殻活動観測・評価を高度化する。