Details of the Researcher

PHOTO

Satoshi Miura
Section
Graduate School of Science
Job title
Specially Appointed Professor(Research)
Degree

  • 博士（理学）（東北大学）

Committee Memberships 17

  • 日本測地学会　評議員

    2016/06 - 2018/05

  • 日本地震学会　代議員

    2016/04 - 2018/03

  • 日本測地学会　評議員

    2013/04 - 2015/03

  • 日本地震学会　代議員

    2008/04 - 2011/03

  • 日本地震学会公益法人移行推進委員会　委員

    2009/04 - 2010/03

  • 科学研究費委員会　専門委員

    2008/12 - 2009/11

  • 日本測地学会　評議員

    2007/04 - 2009/03

  • 日本地震学会大会企画委員会　委員

    2006/04 - 2008/03

  • 日本測地学会　編集委員

    2006/04 - 2008/03

  • 日本地震学会大会企画委員会　委員

    2006/04 - 2008/03

  • 日本測地学会　編集委員

    2006/04 - 2008/03

  • 日本地震学会　理事

    2004/04 - 2008/03

  • 日本測地学会　評議員

    2004/04 - 2006/03

  • 日本地震学会　代議員

    2002/04 - 2004/03

  • 日本測地学会　評議員

    2001/04 - 2003/03

  • 日本測地学会　庶務委員

    1997/04 - 2000/03

  • 日本測地学会　評議員

    1996/04 - 1998/03

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Professional Memberships 4

  • 日本火山学会

  • American Geophysical Union

  • Seismological Society of Japan

  • Geodetic Society of Japan

Research Interests 3

  • plate boundary

  • subduction zone

  • crustal deformation

Research Areas 1

  • Natural sciences / Solid earth science /

Awards 4

  1. 2020 Prize Paper Award of The Volcanological Society of Japan

    2020/08　The Volcanological Society of Japan

  2. Paper Prize Award of the Seismological Society of Japan in 2013

    2014/03　Strain anomalies induced by the 2011 Tohoku Earthquake (Mw 9.0) as observed by a dense GPS network in northeastern Japan

  3. 日本測地学会坪井賞（団体賞）

    2013/07　日本測地学会

  4. JGN2アワード（アプリケーション賞）

    2008/01/07　独立行政法人情報通信研究機構　高速広域レイヤ－2網によるリアルタイム地震観測波形データ交換システムの構築

Papers 112

  1. Updated absolute gravity rate of change associated with glacial isostatic adjustment in Southeast Alaska and its utilization for rheological parameter estimation Peer-reviewed

    Kazuhiro Naganawa, Takahito Kazama, Yoichi Fukuda, Satoshi Miura, Hideaki Hayakawa, Yusaku Ohta, Jeffrey T. Freymueller

    Earth, Planets and Space　74　(1)　1-27　2022/07/25

    Publisher: Springer Science and Business Media LLC

    DOI： 10.1186/s40623-022-01666-7 　

    eISSN： 1880-5981

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    Abstract In Southeast Alaska (SE-AK), rapid ground uplift of up to 3 cm/yr has been observed associated with post-Little Ice Age glacial isostatic adjustment (GIA). Geodetic techniques such as global navigation satellite system (GNSS) and absolute gravimetry have been applied to monitor GIA since the last 1990s. Rheological parameters for SE-AK were determined from dense GNSS array data in earlier studies. However, the absolute gravity rate of change observed in SE-AK was inconsistent with the ground uplift rate, mainly because few gravity measurements from 2006 to 2008 resulted in imprecise gravity variation rates. Therefore, we collected absolute gravity data at six gravity points in SE-AK every June in 2012, 2013, and 2015, and updated the gravity variation rate by reprocessing the absolute gravity data collected from 2006 to 2015. We found that the updated gravity variation rate at the six gravity points ranged from −2.05 to −4.40 $$\upmu$$Gal/yr, and its standard deviation was smaller than that reported in the earlier study by up to 88 %. We also estimated the rheological parameters under the assumption of the incompressible Earth to explain the updated gravity variation rate, and their optimal values were determined to be 55 km and $$1.2 \times 10^{19}$$ Pa s for lithospheric thickness and upper mantle viscosity, respectively. These optimal values are consistent with those independently obtained from GNSS observations, and this fact indicates that absolute gravimetry can be one of the most effective methods in determining sub-surface structural parameters associated with GIA accurately. Moreover, we utilized the gravity variation rates for estimating the ratio of gravity variation to vertical ground deformation at the six gravity points in SE-AK. The viscous ratio values were obtained as −0.168 and −0.171 $$\upmu$$Gal/mm from the observed data and the calculated result, respectively. These ratios are greater (in absolute) than those for other GIA regions (−0.15 to −0.16 $$\upmu$$Gal/mm in Antarctica and Fennoscandia), because glaciers in SE-AK have melted more recently than in other regions. Graphical Abstract

  2. Along-arc heterogeneous rheology inferred from post-seismic deformation of the 2011 Tohoku-oki earthquake

    Sambuddha Dhar, Jun Muto, Yoshiaki Ito, Satoshi Miura, James D P Moore, Yusaku Ohta, Takeshi Iinuma

    Geophysical Journal International　230　(1)　202-215　2022/03/24

    Publisher: Oxford University Press (OUP)

    DOI： 10.1093/gji/ggac063 　

    ISSN： 0956-540X

    eISSN： 1365-246X

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    SUMMARY The Japan forearc plays a crucial role in modulating the post-seismic deformation in response to the enormous stress perturbation induced by the 2011 Tohoku-oki earthquake. Dense geodetic observations across Japan have revealed coupled interactions between afterslip on the subducting plate interface and viscous deformation within the mantle wedge, and detailed numerical models can provide further profound insights into the forearc rheology. Recent studies have revealed the presence of a stagnant section in the forearc mantle of the Tohoku subduction zone, and here we investigate the associated along-arc variation of the stagnant part of the mantle wedge (cold nose) across Japan. We utilize a newly deployed geodetic network along a corridor in the Fukushima–Niigata region and compare the surface deformation pattern to that of the Miyagi–Yamagata corridor close to the main rupture area. We present a 3-D rheological model using laboratory-derived constitutive laws to simulate the geodetic observations including displacement fields and their time-series. Our results suggest along-arc heterogeneity in the forearc mantle rheology; specifically, we find a narrower cold nose in the Miyagi region and a wider one in the Fukushima forearc. The geodetic inferences on the forearc variation are consistent with along-arc spatial heterogeneity in the cut-off depth for shallow earthquakes as well as comparative measurements of the respective geothermal gradients between the Miyagi and Fukushima regions.

  3. Hydrological and Chemical Budgets of Okama Crater Lake in Active Zao Volcano, Japan

    Kazuhisa A. Chikita, Akio Goto, Jun Okada, Takashi Yamaguchi, Satoshi Miura, Mare Yamamoto

    Hydrology　9　(2)　2022/02

    DOI： 10.3390/hydrology9020028 　

    eISSN： 2306-5338

  4. Magma reservoir beneath Azumayama Volcano, NE Japan, as inferred from a three-dimensional electrical resistivity model explored by means of magnetotelluric method

    Masahiro Ichiki, Toshiki Kaida, Takashi Nakayama, Satoshi Miura, Mare Yamamoto, Yuichi Morita, Makoto Uyeshima

    Earth, Planets and Space　73　(1)　2021/12

    Publisher: Springer Science and Business Media LLC

    DOI： 10.1186/s40623-021-01451-y 　

    eISSN： 1880-5981

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    <title>Abstract</title>An electrical resistivity model beneath Azumayama Volcano, NE Japan, is explored using magnetotelluric method to probe the magma/hydrothermal fluid distribution. Azumayama is one of the most concerning active volcanoes capable of producing a potential eruption triggered by the 2011 Tohoku-Oki Earthquake. The three-dimensional resistivity model reveals a conductive magma reservoir (&lt; 3 Ωm) at depths of 3–15 km below sea level (bsl). The 67% and 90% confidence intervals of resistivity are 0.2–5 Ωm and 0.02–70 Ωm, respectively, for the magma reservoir. We assumed dacitic melt + rock at a shallow depth of 4 km bsl and andesitic melt + rock at a greater depth of 9 km bsl. The confidence interval of resistivity cannot be explained by using dacitic melt + rock condition at a depth of 4 km bsl. This suggests that very conductive hydrothermal fluids coexist with dacitic melt and rock in the shallow part of the magma reservoir. For the depth of 9 km bsl, the 67% confidence interval of resistivity is interpreted as water-saturated (8.0 weight %) andesitic melt–mafic rock complex with melt volume fractions greater than 4 volume %, while the shear wave velocity requires the fluid and/or melt volume fraction of 6–7 volume % at that depth. Considering the fluid and/or melt volume fraction of 6–7 volume %, the conductive hydrous phase is likewise required to explain the wide range of the 67% confidence interval of resistivity. The Mogi inflation source determined from geodetic data lies on the resistive side near the top boundary of the conductive magma reservoir at a depth of 2.7 or 3.7 km bsl. Assuming that the resistivity of the inflation source region is above the upper bound of the confidence interval of resistivity for the conductive magma reservoir and that the source region is composed of hydrothermal fluid + rock, the resistivity of the source region is explained by a hydrothermal fluid volume fraction below 5 volume %, which is the percolation threshold porosity in an effusive eruption. This indicates that the percolation threshold characterizes the inflation source region.

  5. Source location of volcanic earthquakes and subsurface characterization using fiber-optic cable and distributed acoustic sensing system

    Takeshi Nishimura, Kentaro Emoto, Hisashi Nakahara, Satoshi Miura, Mare Yamamoto, Shunsuke Sugimura, Ayumu Ishikawa, Tsunehisa Kimura

    SCIENTIFIC REPORTS　11　(1)　2021/03

    DOI： 10.1038/s41598-021-85621-8 　

    ISSN： 2045-2322

  6. Magma Reservoir Beneath Azumayama Volcano, NE Japan as Inferred from Three-dimensional Electrical Resistivity Image by Magnetotellurics

    Masahiro Ichiki, Toshiki Kaida, Takashi Nakayama, Satoshi Miura, Mare Yamamoto, Yuichi Morita, Makoto Uyeshima

    2021/01/07

    DOI： 10.21203/rs.3.rs-139301/v1 　

  7. An Electrical Resistivity Exploration of Zao Volcano using Audio-frequency Magnetotelluric Method to Evaluate the Eruption Potential Field

    M. Ichiki,, Kaida T., Yamamoto M., Miura S., Kanda W., Ushioda M., Seki K., Morita Y., Uyeshima M.

    PROGRAMME AND ABSTRACTS THE VOLCANOLOGICAL SOCIETY OF JAPAN　2021　100-100　2021

    Publisher: The Volcanological Society of Japan

    DOI： 10.18940/vsj.2021.0_100 　

    ISSN： 2433-5320

    eISSN： 2189-7190

  8. Urgent Joint Seismic Observation Data of the 2016 Kumamoto Earthquakes Peer-reviewed

    Azusa SHITO, Ayaho MITSUOKA, Satoshi MATSUMOTO, Takeshi MATSUSHIMA, Koki AIZAWA, Hiroshi SHIMIZU, Kazunari UCHIDA, Megumi KAMIZONO, Yoshiko TEGURI, Manami NAKAMOTO, Rintaro MIYAMACHI, Masayoshi ICHIYANAGI, Mako OHZONO, Kazumi OKADA, Kei KATSUMATA, Masamitsu TAKADA, Hiroaki TAKAHASHI, Yuichiro TANIOKA, Teruhiro YAMAGUCHI, Masahiro KOSUGA, Ryosuke AZUMA, Naoki UCHIDA, Kentaro EMOTO, Yusaku OHTA, Tomomi OKADA, Toshiki KAIDA, Tomofumi KOZONO, Syuichi SUZUKI, Ryota TAKAGI, Tomotsugu DEMACHI, Hisashi NAKAHARA, Takashi NAKAYAMA, Satoshi HIRAHARA, Toru MATSUZAWA, Satoshi MIURA, Mare YAMAMOTO, Kazutoshi IMANISHI, Takahiko UCHIDE, Masayuki YOSHIMI, Shin AOI, Youichi ASANO, Tomotake UENO, Eisuke FUJITA, Eiji ABE, Takashi IIDAKA, Takaya IWASAKI, Aitaro KATO, Eiji KURASHIMO, Shin’ichi SAKAI, Takahiro SHIINA, Masato SERIZAWA, Shinichi TANAKA, Shigeki NAKAGAWA, Naoshi HIRATA, Masataka MASUDA, Koji MIYAKAWA, Takeo YAGI, Atsushi WATANABE, Kazuhiko GOTO, Takeo ITO, Takashi OKUDA, Toshiko TERAKAWA, Shinichiro HORIKAWA, Yuta MAEDA, Kenjiro MATSUHIRO, Yoshiko YAMANAKA, Toshiki WATANABE, Yoshihisa IIO, Hiroshi KATAO, Yasuyuki KANO, Hiroo TSUDA, Tsutomu MIURA, Tomoya MURAMOTO, Yusuke YAMASHITA, Makoto OKUBO, Tadashi YAMASHINA, Takahiro OHKURA, Shigeru NAKAO, Shuichiro HIRANO, Hiroki MIYAMACHI, Hiroshi YAKIWARA

    Zisin (Journal of the Seismological Society of Japan. 2nd ser.)　73　149-157　2020/10/27

    Publisher: Seismological Society of Japan

    DOI： 10.4294/zisin.2019-11 　

    ISSN： 0037-1114

    eISSN： 1883-9029 2186-599X

  9. Late Cenozoic Igneous Activity and Crustal Structure in the NE Japan Arc: Background of Inland Earthquake Activity

    Takeyoshi Yoshida, Reishi Takashima, Takeshi Kudo, Oky Dicky Ardiansyah Prima, Sumire Maeda, Keisuke Yoshida, Tomomi Okada, Satoshi Miura, Tomohiro Takahashi, Yoshitaka Nagahashi, Kyoko Kataoka

    JOURNAL OF GEOGRAPHY-CHIGAKU ZASSHI　129　(4)　529-563　2020

    DOI： 10.5026/jgeography.129.529 　

    ISSN： 0022-135X

    eISSN： 1884-0884

  10. Prediction of Eruption Courses in Volcanoes Without Eruptions Under Modern Observation System: Example of Zao Volcano

    BAN Masao, OIKAWA Teruki, YAMASAKI Seiko, GOTO Akio, YAMAMOTO Mare, MIURA Satoshi

    BULLETIN OF THE VOLCANOLOGICAL SOCIETY OF JAPAN　64　(2)　131-138　2019

    Publisher: The Volcanological Society of Japan

    DOI： 10.18940/kazan.64.2_131 　

    ISSN： 0453-4360

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    &lt;p&gt;Based on the history of volcanic activity of Zao stage VI, we examined possible courses of future activity of Zao volcano. All activities will start with precursory phenomena. Next, phreatic eruptions from Okama crater or other place inner part of Umanose caldera will occur, and may cause ballistic materials release, ash fall, pyroclastic surge, and lahar. The possibility of small scales edifice collapse and lava flow swelled out is very low but should be included. When the activity progresses, magmatic eruptions will be taken place from Goshikidake, and cause same phenomena as in the phreatic eruptions but larger in scale. The possibility magmatic eruption takes place without preceding phreatic eruption can not be excluded. Rarely, the activity will go up further and resulted in sub-Plinian eruption. Aside from the above sequence, larger scale phreatic eruption from Goshikidake area should be listed, although the possibility of this is very low.&lt;/p&gt;

  11. Extremely early recurrence of intraplate fault rupture following the Tohoku-Oki earthquake Peer-reviewed

    Yo Fukushima, Shinji Toda, Satoshi Miura, Daisuke Ishimura, Jun'ichi Fukuda, Tomotsugu Demachi, Kenji Tachibana

    NATURE GEOSCIENCE　11　(10)　777-+　2018/10

    DOI： 10.1038/s41561-018-0201-x 　

    ISSN： 1752-0894

    eISSN： 1752-0908

  12. Small-scale rheological heterogeneity controlled postseismic deformation of the 2011 Tohoku-oki earthquake

    Jun Muto, Bunichiro Shibazaki, Takeshi Iinuma, Yoshihiro Ito, Yusaku Ohta, Satoshi Miura, Yoshihiko Nakai

    ICF 2017 - 14th International Conference on Fracture　1　421-422　2017

  13. 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

  14. Heterogeneous rheology controlled postseismic deformation of the 2011 Tohoku-Oki earthquake Peer-reviewed

    Jun Muto, Bunichiro Shibazaki, Takeshi Iinuma, Yoshihiro Ito, Yusaku Ohta, Satoshi Miura, Yoshihiko Nakai

    GEOPHYSICAL RESEARCH LETTERS　43　(10)　4971-4978　2016/05

    DOI： 10.1002/2016GL068113 　

    ISSN： 0094-8276

    eISSN： 1944-8007

  15. Electromagnetic image, and potential change in 2014-2016, beneath Zao volcano, NE Japan

    M. Ichiki, Kaida T., Demachi T., Hirahara S., Nakayama T., Sato M., Yamamoto M., Miura S., Moriyama T., Akutagawa M., Kobayashi T., Matsuura S., Omori S., Ono K., Seki S., Kanda W., Seki K., Ogawa Y., Ushioda M., Uyeshima M.

    PROGRAMME AND ABSTRACTS THE VOLCANOLOGICAL SOCIETY OF JAPAN　2016　38-38　2016

    Publisher: The Volcanological Society of Japan

    DOI： 10.18940/vsj.2016.0_38 　

  16. 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

    IAG 150 YEARS　143　467-475　2016

    DOI： 10.1007/1345_2015_109 　

    ISSN： 0939-9585

  17. Development and assessment of real-time fault model estimation routines in the GEONET real-time processing system Peer-reviewed

    Kawamoto S, K. Miyagawa, T. Yahagi, M. Todoroki, T. Nishimura, Y. Ohta, R. Hino, S. Miura

    International Association of Geodesy Symposia　89-96　2015/03

    Publisher: Springer International Publishing

    DOI： 10.1007/1345_2015_49 　

    ISSN： 0939-9585

    eISSN： 2197-9359

  18. 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

    Iinuma T, R. Hino, M. Kido, Y. Ohta, S. Miura

    International Association of Geodesy Symposia　2015/03

    DOI： 10.1007/1345_2015_48 　

  19. 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 　

  20. The effects of compressibility on the GIA in southeast Alaska Peer-reviewed

    Yoshiyuki Tanaka, Tadahiro Sato, Yusaku Ohta, Satoshi Miura, Jeffrey T. Freymueller, Volker Klemann

    JOURNAL OF GEODYNAMICS　84　55-61　2015/03

    DOI： 10.1016/j.jog.2014.10.001 　

    ISSN： 0264-3707

  21. Development of visualization tool for real-time GNSS time-series

    Tomotsugu Demachi, Yusaku Ohta, Satoshi Miura, Kenji Tachibana, Toshiya Sato, Ryota Hino

    Journal of the Geodetic Society of Japan　60　(3)　99-104　2015

    Publisher: Geodetic Society of Japan

    ISSN： 0038-0830

  22. 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　2015

  23. Imaging of the early acceleration phase of the 2013-2014 Boso slow slip event Peer-reviewed

    Jun'ichi Fukuda, Aitaro Kato, Kazushige Obara, Satoshi Miura, Teruyuki Kato

    GEOPHYSICAL RESEARCH LETTERS　41　(21)　7493-7500　2014/11

    DOI： 10.1002/2014GL061550 　

    ISSN： 0094-8276

    eISSN： 1944-8007

  24. The effects of compressibility on the GIA in southeast Alaska Peer-reviewed

    Tanaka Y, T. Sato, Y. Ohta, S. Miura, J.T.Freymueller, V. Klemann

    J. Geodynamics　84　55-61　2014/10/14

    DOI： 10.1016/j.jog.2014.10.0011 　

  25. 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

  26. Active Seismic Source Experiment in and around Sakurajima Volcano in 2013 and Comparison with the Experiment in 2008

    NAKAMICHI HARUHISA, TSUTSUI TOMOKI, TAMEGURI TAKESHI, IGUCHI MASATO, YAKIWARA HIROSHI, OMINATO TAKAO, SUGAI AKIRA, OSHIMA HIROMITSU, MIURA SATOSHI, YAMAMOTO MARE, ICHIKI MASAHIRO, NOGAMI KENJI, TAKEO MINORU, ICHIHARA MIE, OIKAWA JUN, YAMANAKA YOSHIKO, OKURA TAKAHIRO, ABE YUKI, SHIMIZU HIROSHI, YAMASHITA YUSUKE, MIYAMACHI HIROKI, KOBAYASHI REIJI, MIKI DAISUKE, YAMAMOTO KEIGO, MAEKAWA TOKUMITSU, HIRAHARA SATOSHI, WATANABE ATSUSHI, OKUDA TAKASHI, HORIKAWA SHIN'ICHIRO, MATSUHIRO KENJIRO, SONODA TADAOMI, SEKI KENJIRO, YOSHIKAWA SHIN, HIRANO SHUICHIRO, WATANABE YUKIHIRO, USUI YUJI, KOBAYASHI TSUKASA, IKEDA KEIJI, NAGATO SHIN'YA, KOEDA TOMOYUKI

    京都大学防災研究所年報(CD-ROM)　(57)　14-137　2014/09

    Publisher:

    ISSN： 0386-412X

  27. Repetitive Seismic Survey 2013 in Sakurajima Volcano, South Kyushu, Japan. The Fifth Round

    TSUTSUI TOMOKI, IGUCHI MASATO, NAKAMICHI HARUHISA, TAMEGURI TAKESHI, YAKIWARA HIROSHI, OMINATO TAKAO, SUGAI AKIRA, OSHIMA HIROMITSU, MIURA SATOSHI, YAMAMOTO MARE, ICHIKI MASAHIRO, NOGAMI KENJI, TAKEO MINORU, ICHIHARA MIE, OIKAWA JUN, YAMANAKA YOSHIKO, OKURA TAKAHIRO, ABE YUKI, SHIMIZU HIROSHI, YAMASHITA YUSUKE, MIYAMACHI HIROKI, KOBAYASHI REIJI, MIKI DAISUKE, YAMAMOTO KEIGO, MAEKAWA TOKUMITSU, HIRAHARA SATOSHI, WATANABE ATSUSHI, OKUDA TAKASHI, HORIKAWA SHIN'ICHIRO, MATSUHIRO KENJIRO, SONODA TADAOMI, SEKI KENJIRO, YOSHIKAWA SHIN, HIRANO SHUICHIRO, WATANABE YUKIHIRO, USUI YUJI, KOBAYASHI TSUKASA, IKEDA KEIJI, NAGATO SHIN'YA, KOEDA TOMOYUKI

    京都大学防災研究所年報(CD-ROM)　(57)　15-149　2014/09

    Publisher:

    ISSN： 0386-412X

  28. 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

  29. 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

  30. リアルタイムGNSS 時系列可視化ツールの開発 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

    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.

  31. 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

    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.

  32. 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

  33. Time-Series Modeling of Tide Gauge Records for Monitoring of the Crustal Activities Related to Oceanic Trench Earthquakes Around Japan Peer-reviewed

    Hiromichi Nagao, Tomoyuki Higuchi, Satoshi Miura, Daisuke Inazu

    COMPUTER JOURNAL　56　(3)　355-364　2013/03

    DOI： 10.1093/comjnl/bxs139 　

    ISSN： 0010-4620

    eISSN： 1460-2067

  34. 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

  35. 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

    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 StarFireTM 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.

  36. Improvement on Automatic Detection Method of Coseismic Displacement in the RTK-GPS Time Series using neighboring sites information Peer-reviewed

    KOBAYASHI Tatsuya, OHTA Yusaku, MIURA Satoshi, HINO Ryota, FUJIMOTO Hiromi, DEMACHI Tomotsugu, TACHIBANA Kenji

    Journal of the Geodetic Society of Japan　58　(2)　77-87　2012/10/25

    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 &sim;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.

  37. 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　(L16304)　2012/08

    DOI： 10.1029/2012GL052430 　

    ISSN： 0094-8276

    eISSN： 1944-8007

  38. 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　(B07409)　2012/07

    DOI： 10.1029/2012JB009186 　

    ISSN： 2169-9313

    eISSN： 2169-9356

  39. 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　(B02311)　2012/02

    DOI： 10.1029/2011JB008750 　

    ISSN： 2169-9313

    eISSN： 2169-9356

  40. The 2011 Tohoku Earthquake Preface

    Akira Hasegawa, Takashi Furumura, Stephen H. Kirby, Satoshi Miura, Tomomi Okada, Akinori Saito, Masanao Shinohara

    EARTH PLANETS AND SPACE　64　(12)　1059-1059　2012

    DOI： 10.5047/eps.2012.12.014 　

    ISSN： 1343-8832

  41. Particle Filter Algorithm to Analyze Long-Term Tide Gauge Records for Monitoring of the Earth's Crustal Activities(<Special Section>Statistical Evaluation of Tohoku Great Earthquake Disaster and Some Related Topics) Peer-reviewed

    Nagao Hiromichi, Higuchi Tomoyuki, Miura Satoshi, Inazu Daisuke

    42　(1)　119-133　2012

    Publisher:

    ISSN： 0389-5602

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    The 140 tide gauge observatories located along the coastline of Japan have measured the sea levels for more than 100 years. A number of tide gauge records provide the information of the Earth's crustal activities associated with great earthquakes, e.g., the 2011 Great East Japan Earthquake, that occur periodically at the oceanic plate boundaries. The present paper develops an analysis procedure using the particle filter algorithm, which enables us to extract the crustal displacements from monthly means of the tide gauge records. The proposed method results that the plate boundary called "Nankai Trough" offshore west Japan has been rapidly accumulating the stress and strain energies, which will cause a great earthquake eventually. This result supports the hypothesis that the Tokai-Tonankai-Nankai Earthquake may occur in near future.

  42. Geodetic evidence of viscoelastic relaxation after the 2008 Iwate-Miyagi Nairiku earthquake Peer-reviewed

    Mako Ohzono, Yusaku Ohta, Takeshi Iinuma, Satoshi Miura, Jun Muto

    EARTH PLANETS AND SPACE　64　(9)　759-764　2012

    DOI： 10.5047/eps.2012.04.001 　

    ISSN： 1343-8832

  43. Gravity and uplift rates observed in southeast Alaska and their comparison with GIA model predictions Peer-reviewed

    Tadahiro Sato, Satoshi Miura, Wenke Sun, Takayuki Sugano, Jeffrey T. Freymueller, Christopher F. Larsen, Yusaku Ohta, Hiromi Fujimoto, Daisuke Inazu, Roman J. Motyka

    JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH　117　(B01401)　2012/01

    DOI： 10.1029/2011JB008485 　

    ISSN： 2169-9313

    eISSN： 2169-9356

  44. Strain anomalies induced by the 2011 Tohoku Earthquake (M-w 9.0) as observed by a dense GPS network in northeastern Japan Peer-reviewed

    Mako Ohzono, Yasuo Yabe, Takeshi Iinuma, Yusaku Ohta, Satoshi Miura, Kenji Tachibana, Toshiya Sato, Tomotsugu Demachi

    EARTH PLANETS AND SPACE　64　(12)　1231-1238　2012

    DOI： 10.5047/eps.2012.05.015 　

    ISSN： 1343-8832

  45. Reevaluation of the viscoelastic and elastic responses to the past and present-day ice changes in Southeast Alaska Peer-reviewed

    Tadahiro Sato, Christopher F. Larsen, Satoshi Miura, Yusasku Ohta, Hiromi Fujimoto, Wenke Sun, Roman J. Motyka, Jeffrey T. Freymueller

    TECTONOPHYSICS　511　(3-4)　79-88　2011/11

    DOI： 10.1016/j.tecto.2010.05.009 　

    ISSN： 0040-1951

    eISSN： 1879-3266

  46. Slip distribution beneath the Central and Western Himalaya inferred from GPS observations Peer-reviewed

    M. Ponraj, S. Miura, C. D. Reddy, S. Amirtharaj, S. H. Mahajan

    GEOPHYSICAL JOURNAL INTERNATIONAL　185　(2)　724-736　2011/05

    DOI： 10.1111/j.1365-246X.2011.04958.x 　

    ISSN： 0956-540X

    eISSN： 1365-246X

  47. Large intraslab earthquake (2011 April 7, M 7.1) after the 2011 off the Pacific coast of Tohoku Earthquake (M 9.0): Coseismic fault model based on the dense GPS network data Peer-reviewed

    Yusaku Ohta, Satoshi Miura, Mako Ohzono, Saeko Kita, Takeshi Iinuma, Tomotsugu Demachi, Kenji Tachibana, Takashi Nakayama, Satoshi Hirahara, Syuichi Suzuki, Toshiya Sato, Naoki Uchida, Akira Hasegawa, Norihito Umino

    EARTH PLANETS AND SPACE　63　(12)　1207-1211　2011

    DOI： 10.5047/eps.2011.07.016 　

    ISSN： 1343-8832

    eISSN： 1880-5981

  48. Coseismic slip distribution of the 2011 off the Pacific coast of Tohoku Earthquake (M 9.0) estimated based on GPS data-Was the asperity in Miyagi-oki ruptured? Peer-reviewed

    Takeshi Iinuma, Mako Ohzono, Yusaku Ohta, Satoshi Miura

    EARTH PLANETS AND SPACE　63　(7)　643-648　2011

    DOI： 10.5047/eps.2011.06.013 　

    ISSN： 1343-8832

    eISSN： 1880-5981

  49. Gravity measurements in southeastern Alaska reveal negative gravity rate of change caused by glacial isostatic adjustment Peer-reviewed

    W. Sun, S. Miura, T. Sato, T. Sugano, J. Freymueller, M. Kaufman, C. F. Larsen, R. Cross, D. Inazu

    Journal of Geophysical Research: Solid Earth　115　(12)　2010/12/01

    Publisher: Blackwell Publishing Ltd

    DOI： 10.1029/2009JB007194 　

    ISSN： 2169-9356 2169-9313

  50. Estimation of strain distribution using GPS measurements in the Kumaun region of Lesser Himalaya Peer-reviewed

    M. Ponraj, S. Miura, C. D. Reddy, S. K. Prajapati, S. Amirtharaj, S. H. Mahajan

    JOURNAL OF ASIAN EARTH SCIENCES　39　(6)　658-667　2010/11

    DOI： 10.1016/j.jseaes.2010.04.037 　

    ISSN： 1367-9120

  51. Development of the GPS Observation System Using the Low-cost Dual-frequency GPS Receiver and Data Logger Peer-reviewed

    OHTA Yusaku, MIURA Satoshi, MATSUMURA Shinsuke, MORI Toshiyuki

    測地学会誌　56　(3)　101-106　2010/10/25

    Publisher:

    DOI： 10.11366/sokuchi.56.101 　

    ISSN： 0038-0830

  52. Quasi-static slip on the plate boundary associated with the 2003 M8.0 Tokachi-oki and 2004 M7.1 off-Kushiro earthquakes, Japan Peer-reviewed

    Naoki Uchida, Satoshi Yui, Satoshi Miura, Toru Matsuzawa, Akira Hasegawa, Yoshinobu Motoya, Minoru Kasahara

    GONDWANA RESEARCH　16　(3-4)　527-533　2009/12

    DOI： 10.1016/j.gr.2009.04.002 　

    ISSN： 1342-937X

    eISSN： 1878-0571

  53. Aseismic slow slip on an inland active fault triggered by a nearby shallow event, the 2008 Iwate-Miyagi Nairiku earthquake (Mw6.8) Peer-reviewed

    T. Iinuma, M. Ohzono, Y. Ohta, S. Miura, M. Kasahara, H. Takahashi, T. Sagiya, T. Matsushima, S. Nakao, S. Ueki, K. Tachibana, T. Sato, H. Tsushima, K. Takatsuka, T. Yamaguchi, M. Ichiyanagi, M. Takada, K. Ozawa, M. Fukuda, Y. Asahi, M. Nakamoto, Y. Yamashita, N. Umino

    GEOPHYSICAL RESEARCH LETTERS　36　2009/10

    DOI： 10.1029/2009GL040063 　

    ISSN： 0094-8276

  54. Accurate ocean tide modeling in southeast Alaska and large tidal dissipation around Glacier Bay Peer-reviewed

    Daisuke Inazu, Tadahiro Sato, Satoshi Miura, Yusaku Ohta, Kazuyuki Nakamura, Hiromi Fujimoto, Christopher F. Larsen, Tomoyuki Higuchi

    JOURNAL OF OCEANOGRAPHY　65　(3)　335-347　2009/06

    DOI： 10.1007/s10872-009-0031-y 　

    ISSN： 0916-8370

  55. Enigmatic, highly active left-lateral shear zone in southwest Japan explained by aseismic ridge collision Peer-reviewed

    Laura M. Wallace, Susan Ellis, Kayo Miyao, Satoshi Miura, John Beavan, Junichi Goto

    GEOLOGY　37　(2)　143-146　2009/02

    DOI： 10.1130/G25221A.1 　

    ISSN： 0091-7613

    eISSN： 1943-2682

  56. Earth tides observed by gravity and GPS in southeastern Alaska Peer-reviewed

    T. Sato, S. Miura, Y. Ohta, H. Fujimoto, W. Sun, C. F. Larsen, M. Heavner, A. M. Kaufman, J. T. Freymueller

    JOURNAL OF GEODYNAMICS　46　(3-5)　78-89　2008/10

    DOI： 10.1016/j.jog.2008.03.004 　

    ISSN： 0264-3707

  57. Introduction of 10Hz GPS Receiver for the Improved Observation of Seafloor Crustal Movement Peer-reviewed

    OSADA Yukihito, MIZUKAMI Tomoko, KIDO Motoyuki, OHTA Yusaku, TSUSHIMA Hiroaki, MIURA Satoshi, FUJIMOTO Hiromi

    測地学会誌　54　(3)　141-151　2008/09/25

    Publisher:

    DOI： 10.11366/sokuchi1954.54.141 　

    ISSN： 0038-0830

  58. Coseismic fault model of the 2008 Iwate-Miyagi Nairiku earthquake deduced by a dense GPS network Peer-reviewed

    Yusaku Ohta, Mako Ohzono, Satoshi Miura, Takeshi Iinuma, Kenji Tachibana, Kota Takatsuka, Kayo Miyao, Toshiya Sato, Norihito Umino

    EARTH PLANETS AND SPACE　60　(12)　1197-1201　2008

    DOI： 10.1186/BF03352878 　

    ISSN： 1880-5981

  59. Postseismic slip associated with the 2007 Chuetsu-oki, Niigata, Japan, Earthquake (M 6.8 on 16 July 2007) as inferred from GPS data Peer-reviewed

    Takeshi Iinuma, Yusaku Ohta, Satoshi Miura, Kenji Tachibanal, Takeshi Matsushima, Hiroaki Takahashi, Takeshi Sagiya, Takeo Ito, Shin'ichi Miyazaki, Ryosuke Doke, Akira Takeuchi, Kayo Miyao, Akihiko Hirao, Takahiro Maeda, Teruhiro Yamaguchi, Masamitsu Takada, Makiko Iwakuni, Tadafumi Ochi, Irwan Meilano, Akira Hasegawa

    EARTH PLANETS AND SPACE　60　(11)　1087-1091　2008

    DOI： 10.1186/BF03353141 　

    ISSN： 1880-5981

  60. Coseismic and postseismic deformation related to the 2007 Chuetsu-oki, Niigata Earthquake Peer-reviewed

    Yusaku Ohta, Satoshi Miura, Takeshi Iinuma, Kenji Tachibana, Takeshi Matsushima, Hiroaki Takahashi, Takeshi Sagiya, Takeo Ito, Shin'ichi Miyazaki, Ryosuke Doke, Akira Takeuchi, Kayo Miyao, Akihiko Hirao, Takahiro Maeda, Teruhiro Yamaguchi, Masamitsu Takada, Makiko Iwakuni, Tadafumi Ochi, Irwan Meilano, Akira Hasegawa

    EARTH PLANETS AND SPACE　60　(11)　1081-1086　2008

    DOI： 10.1186/BF03353140 　

    ISSN： 1343-8832

  61. Interplate Quasi-Static Slip off Miyagi and Fukushima Prefectures Estimated from Small Repeating Earthquake Data Peer-reviewed

    UCHIDA Naoki, MATSUZAWA Toru, MIURA Satoshi, HIRAHARA Satoshi, HASEGAWA Akira

    Zisin (Journal of the Seismological Society of Japan. 2nd ser.)　59　(4)　287-295　2007/03/25

    Publisher: SEISMOLOGICAL SOCIETY OF JAPAN

    DOI： 10.4294/zisin.59.287 　

    ISSN： 0037-1114

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    Spatio-temporal distribution of quasi-static slip on the plate boundary east off Miyagi and Fukushima prefectures, NE Honshu, Japan is estimated by using small repeating earthquake data. The analysis of small repeating earthquakes has advantages of relatively high spatial resolution, especially near the trench, and the availability of long-term data (22 years) compared to GPS data. The results show that the repeating earthquakes are distributed outside the coseismic slip areas (asperities) of large earthquakes, showing that fault creep is dominant outside the asperities. The cumulative slip (slip histories) of small repeating earthquake groups reveal the existence of many non-steady aseismic slip events. Most of the episodic quasi-static slip events are associated with M&ge; 6 earthquakes and they are frequently seen in the areas near the Japan trench in particular. Minor afterslip (&sim;15cm) of the 2005 Miyagi-oki earthquake (M7.2) is also estimated in the area which encompasses the coseismic slip area of the 2005 earthquake.

  62. Interplate Slip Distribution Inferred from Co- and Post-seismic Deformation Associated with the 2005 Miyagi-oki Earthquake (M7.2) Peer-reviewed

    MIURA Satoshi, IINUMA Takeshi, YUI Satoshi, SATO Toshiya, TACHIBANA Kenji, HASEGAWA Akira

    Zisin (Journal of the Seismological Society of Japan. 2nd ser.)　59　(4)　371-379　2007/03/25

    Publisher: SEISMOLOGICAL SOCIETY OF JAPAN

    DOI： 10.4294/zisin.59.371 　

    ISSN： 0037-1114

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    A typical interplate earthquake with M7.2 occurred on August 16, 2005 on the plate boundary off Miyagi Prefecture. Co- and post-seismic deformations associated with this event were investigated to reveal the causal interplate slips using continuous GPS data and geodetic inversion. The co-seismic slip distribution shows good agreement with that estimated by seismic waveform inversions. The major slip area is limited to the southeastern part of the rupture area of the 1978 Miyagi-oki earthquake (M7.4). The post-seismic slip extended uni-laterally to the southwest of the co-seismic slippage. These distinctive features both of the co- and post-seismic slips might be caused by the existence of the locked plate interface in the northern and southwestern parts of the 1978 rupture area, where seismogenic stress has not released yet.

  63. Development of a GPS/Acoustic Seafloor Positioning System for 6,000m Water Depth and its Trial Experiments at Sea Peer-reviewed

    OSADA Yukihito, FUJIMOTO Hiromi, KANAZAWA Toshihiko, NAKAO Shigeru, SAKAI Shin-ichi, MIURA Satoshi, HILDEBRAND John A., DAVE CHADWELL C.

    J. Geod. Soc. Japan　52　(3)　171-182　2006/09/25

    Publisher:

    DOI： 10.11366/sokuchi1954.52.171 　

    ISSN： 0038-0830

  64. Initial Results of GPS/Acoustic Seafloor Positioning using a Small Towed Buoy off Miyagi Prefecture, Northeastern Japan Peer-reviewed

    FUNAKOSHI Minoru, OSADA Yukihito, MIURA Satoshi, NISHINO Minoru, KUWANO Asako, HINO Ryota, FUJIMOTO Hiromi

    測地学会誌　52　(2)　115-130　2006/06/25

    Publisher:

    DOI： 10.11366/sokuchi1954.52.115 　

    ISSN： 0038-0830

  65. Interplate coupling beneath NE Japan inferred from three-dimensional displacement field Peer-reviewed

    Y Suwa, S Miura, A Hasegawa, T Sato, K Tachibana

    JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH　111　(B4)　doi:101029/2004JB003203　2006/04

    DOI： 10.1029/2004JB003203 　

    ISSN： 2169-9313

    eISSN： 2169-9356

  66. Co- and post-seismic slip associated with the 2005 Miyagi-oki earthquake (M7.2) as inferred from GPS data Peer-reviewed

    Satoshi Miura, Takeshi Iinuma, Satsoshi Yui, Naoki Uchida, Toshiya Sato, Kenji Tachibana, Akira Hasegawa

    EARTH PLANETS AND SPACE　58　(12)　1567-1572　2006

    DOI： 10.1186/BF03352662 　

    ISSN： 1343-8832

  67. Seafloor displacement at Kumano-nada caused by the 2004 off Kii Peninsula earthquakes, detected through repeated GPS/Acoustic surveys Peer-reviewed

    Motoyuki Kido, Hiromi Fujimoto, Satoshi Miura, Yukihito Osada, Kentaro Tsuka, Takao Tabei

    EARTH PLANETS AND SPACE　58　(7)　911-915　2006

    DOI： 10.1186/BF03351996 　

    ISSN： 1343-8832

  68. Deep structure of the northeastern Japan arc and its implications for crustal deformation and shallow seismic activity Peer-reviewed

    A Hasegawa, J Nakajima, N Umino, S Miura

    TECTONOPHYSICS　403　(1-4)　59-75　2005/07

    DOI： 10.1016/j.tecto.2005.03.018 　

    ISSN： 0040-1951

  69. Asperities and quasi-static slips on the subducting plate boundary east off Tohoku, NE Japan, Margins Theoretical Institute

    Hasegawa, A, N. Uchida, T. Igarashi, T. Matsuzawa, T. Okada, S. Miura, Y. Suwa

    SEIZE volume, Columbia University Press　2005

  70. Temporal change of interplate coupling in northeastern Japan during 1995-2002 estimated from continuous GPS observations Peer-reviewed

    T Nishimura, T Hirasawa, S Miyazaki, T Sagiya, T Tada, S Miura, K Tanaka

    GEOPHYSICAL JOURNAL INTERNATIONAL　157　(2)　901-916　2004/05

    DOI： 10.1111/j.1365-246X.2004.02159.x 　

    ISSN： 0956-540X

  71. The 2003 M8.0 Tokachi-Oki earthquake - How much has the great event paid back sip debts? Peer-reviewed

    Miura.S, Y.Suwa, A. Hasegawa

    Geophys. Res. Lett.　31　doi:10.1029/003GL01902　2004/04

  72. ＧＰＳ連続観測による長町－利府断層帯およびその周辺（東北地方中部）の地殻変動 Peer-reviewed

    西村卓也, 鷺谷 威, 三浦 哲

    地震 第2輯　56　497-509　2004/04

    DOI： 10.4294/zisin1948.56.4_497 　

  73. Spatio-temporal Change of Interplate Coupling in the Northeastern Japan Subduction Zone Peer-reviewed

    SUWA Yoko, MIURA Satoshi, HASEGAWA Akira, SATO Toshiya, TACHIBANA Kenji

    Zisin : Journal of the Seismological Society of Japan　56　(4)　471-484　2004/03/25

    Publisher:

    DOI： 10.4294/zisin1948.56.4_471 　

    ISSN： 0037-1114

  74. Crustal Deformation and Shallow Seismic Activity beneath the Northeastern Japan Arc Peer-reviewed

    HASEGAWA Akira, NAKAJIMA Junichi, UMINO Norihito, MIURA Satoshi, SUWA Yoko

    Zisin : Journal of the Seismological Society of Japan　56　(4)　413-424　2004/03/25

    Publisher:

    DOI： 10.4294/zisin1948.56.4_413 　

    ISSN： 0037-1114

  75. Strain concentration zone along the volcanic front derived by GPS observations in NE Japan arc Peer-reviewed

    S Miura, T Sato, A Hasegawa, Y Suwa, K Tachibana, S Yui

    EARTH PLANETS AND SPACE　56　(12)　1347-1355　2004

    DOI： 10.1186/BF03353360 　

    ISSN： 1343-8832

  76. Slip distribution of the 2003 northern Miyagi earthquake (M6.4) deduced from geodetic inversion Peer-reviewed

    S Miura, Y Suwa, T Sato, K Tachibana, A Hasegawa

    EARTH PLANETS AND SPACE　56　(2)　95-101　2004

    DOI： 10.1186/BF03353393 　

    ISSN： 1343-8832

  77. Estimation and correction for the effect of sound velocity variation on GPS/Acoustic seafloor positioning: An experiment off Hawaii Island Peer-reviewed

    Y Osada, H Fujimoto, S Miura, A Sweeney, T Kanazawa, S Nakao, SI Sakai, JA Hildebrand, CD Chadwell

    EARTH PLANETS AND SPACE　55　(12)　E17-E20　2003

    DOI： 10.1186/BF03352464 　

    ISSN： 1343-8832

  78. Crustal Deformation around Ou Backbone Range, Northeastern Japan Observed by a Dense GPS Network Peer-reviewed

    SATO Toshiya, MIURA Satoshi, TACHIBANA Kenji, SATAKE Yoshimi, HASEGAWA Akira

    Zisin (Journal of the Seismological Society of Japan. 2nd ser.)　55　(2)　181-191　2002/10/31

    Publisher: SEISMOLOGICAL SOCIETY OF JAPAN

    DOI： 10.4294/zisin1948.55.2_181 　

    ISSN： 0037-1114

    More details Close

    A dense GPS network was established in 1997 around Ou Backbone Range (OBR), northeastern Japan, by deploying 9 new continuous GPS stations so as to complement the sparse portion of GEONET (GPS Earth Observation Network) operated by Geographical Survey Institute (GSI), Japan. This new observation network is aimed to investigate the present deformation and to understand the relationship between the occurrence of intraplate earthquakes and the deformation process of an island-arc crust.<BR>GPS data are analyzed using a precise point positioning strategy of GIPSY/OASIS-II. Coordinates of the GEONET stations in daily SINEX files have been supplied by GSI. A map of the intraplate deformation field derived by combining the two data sets and by subtracting the motion of the North American Plate demonstrates displacements toward WNW along the Pacific coast. This is caused by the interplate coupling between the Pacific and North American Plates. Displacements along the Japan Sea coast, on the other hand, are considerably small in magnitude, and directed to NW and N in the southern and northern area, respectively. OBR lies halfway between the two coasts and shows the transitional pattern of both deformation characteristics.<BR>By producing grid data of displacement velocities and taking spatial derivatives, we obtained a map of strain rate distribution. We found that the region between 38.8&deg;N and 39.8&deg;N in OBR demonstrates notable concentration of EW contraction. The region coincides with the area of active seismicity and includes the focal areas of 1896 (M7.2), 1962 (M6.5), 1970 (M6.2), and 1998 (M6.1) events. The observed strain is larger than can be explained by the total moment release of earthquakes that occurred in the same period of this study. Possible sources of the strain concentration may be viscoelastic deformation due to the large earthquakes and/or aseismic slip along the deeper extension of active faults.

  79. Geodetic Observations of the 2000 Eruption of Usu Volcano Using Dual Frequency GPS Receivers(Special Section：The 2000 Eruption of Usu Volcano) Peer-reviewed

    TAKAHASHI Hiroaki, KIMATA Fumiaki, KASAHARA Minoru, OKAZAKI Noritoshi, ISHIMARU Satoshi, MORI Hitoshi, MATSUSHIMA Takeshi, WATANABE Atsushi, MIURA Satoshi, NAKAO Shigeru, KATO Teruyuki

    BULLETIN OF THE VOLCANOLOGICAL SOCIETY OF JAPAN　47　(3)　161-166　2002

    Publisher: The Volcanological Society of Japan

    DOI： 10.18940/kazan.47.3_161 　

    ISSN： 0453-4360

    More details Close

    To monitor the crustal deformation associated with the Usu volcano unrest from 27th March, 2001, we started GPS observations from 28th March, 2001 using Ashtech Z-XII receivers. We succeeded installing 6 new continuous stations around the volcano before the beginning of the eruption at 13:07 (JST), 31st March, 2000. Data were collected via a cellular-phone telemetry system. We carried out automatic rapid data analysis every 3 hours using the Bernese GPS Software Version 4.2, Bernese Processing Engine and IGS predicted ephemeredes. Results were published immediately on the WWW server at Hokkaido University to monitor the volcanic activity. From our GPS observations, we find that: (1) cumulative horizontal displacements from 29th March to noon of 31st March, 2000 exceeded 1 m at the KON, OHD, UVO stations, (2) just before the beginning of the eruption, striking deformation was observed at KON located right above the new crater, (3) after the beginning of the eruption, large scale crustal deformation was generally terminated

  80. Volcanic and Seismic Activities Observed around Iwate Volcano in 1998 Peer-reviewed

    UEKI Sadato, MIURA Satoshi

    Journal of geography　111　(2)　154-165　2002

    Publisher: Tokyo Geographical Society

    DOI： 10.5026/jgeography.111.2_154 　

    ISSN： 0022-135X

    More details Close

    The relationship between volcanic and seismic activities observed around Iwate volcano in 1998 are discussed. The first subject is the relation between the seismic activity and the ground deformation, which were simultaneously observed in the period from February to August, 1998. The seismic activity is a characterized by westward extension of the focal region in the western part of the volcano. The ground deformation is explained by moving sources of tensile faults and pressure sources located near the west end of the focal region at each twomonth period considered. The synchronism of these phenomena is explained by the idea that both of the activities are two different aspects of volcanic activity caused by the westward migration of magma in the western part of the volcano. The idea is confirmed by the examination using the temporal change of the Coulomb failure function (&Delta;CFF). The second subject is the relation between the volcanic activity mentioned above and a moderate earthquake (M6.1) of Sept. 3, 1998, that took place at 10 km SW from the summit of the volcano. The &Delta;CFF calculated from the source model for the volcanic ground deformation shows no evidence that the volcanic activity triggered the earthquake. On the other hand, temporal changes in seismicity in the volcanic area are explained as the effects of the stress changes caused by the earthquake. Nevertheless, some relations between the seismic activities and the volcanic activity are explained by changes in static stress, but there remain other phenomena that were observed at the same time and whose relationships are not yet understood.

  81. Strain accumulation in and around Ou Backbone Range, northeastern Japan as observed by a dense GPS network Peer-reviewed

    S Miura, T Sato, K Tachibana, Y Satake, A Hasegawa

    EARTH PLANETS AND SPACE　54　(11)　1071-1076　2002

    DOI： 10.1186/BF03353304 　

    ISSN： 1343-8832

  82. 稠密GPS観測アレイによる断層深部すべり過程の解明

    鷺谷威, 西村卓也, 三浦哲, 飯尾能久, 多田堯

    月刊地球　23　321-327-327　2001

  83. Distribution of seismic coupling on the subducting plate boundary in northeastern Japan inferred from GPS observations Peer-reviewed

    T Nishimura, S Miura, K Tachibana, K Hashimoto, T Sato, S Hori, E Murakami, T Kono, K Nida, M Mishina, T Hirasawa, S Miyazaki

    TECTONOPHYSICS　323　(3-4)　217-238　2000/08

    DOI： 10.1016/S0040-1951(00)00108-6 　

    ISSN： 0040-1951

  84. Seismic activity and deformation process of the overriding plate in the northeastern Japan subduction zone Peer-reviewed

    A Hasegawa, A Yamamoto, N Umino, S Miura, S Horiuchi, DP Zhao, H Sato

    TECTONOPHYSICS　319　(4)　225-239　2000/04

    DOI： 10.1016/S0040-1951(99)00296-6 　

    ISSN： 0040-1951

  85. Deep structure of the northeastern Japan arc and its implications for crustal deformation and shallow seismic activity Peer-reviewed

    Hasegawa, A, J. Nakajima, N. Umino, S. Miura

    Tectonophysics　403　59-75　2000

    DOI： 10.1016/j.tecto.2005.03.018 　

  86. Crustal deformation associated with the 1998 seismo-volcanic crisis of Iwate Volcano, Northeastern Japan, as observed by a dense GPS network Peer-reviewed

    S Miura, S Ueki, T Sato, K Tachibana, H Hamaguchi

    EARTH PLANETS AND SPACE　52　(11)　1003-1008　2000

    DOI： 10.1186/BF03352321 　

    ISSN： 1343-8832

  87. The Amurian plate motion and current plate kinematics in Eastern Asia Peer-reviewed

    Heki, K, S. Miyazaki, H. Takahashi, M. Kasahara, F. Kimata, S. Miura, N. Vasilenco, A. Ivashchenco, K. An

    J. Geophys. Res.　104　(12)　29147-29155　1999/04

    DOI： 10.1029/1999JB900295 　

  88. Velocity field of around the Sea of Okhotsk and Sea of Japan regions determined from a new continuous GPS network data Peer-reviewed

    H. Takahashi, M. Kasahara, F. Kimata, S. Miura, K. Heki, T. Seno, T. Kato, N. Vasilenko, A. Ivashchenko, V. Bahtiarov, V. Levin, E. Gordeev, F. Korchagin, M. Gerasimenko

    Geophysical Research Letters　26　(16)　2533-2536　1999

    Publisher: American Geophysical Union

    DOI： 10.1029/1999GL900565 　

    ISSN： 0094-8276

  89. Source model of the co- and post-seismic deformation associated with the 1994 far off Sanriku earthquake (M7.5) inferred from strain and GPS measurements Peer-reviewed

    Nishimura, T, S. Miura, K. Tachibana, K. Hashimoto, T. Sato, S. Hori, E. Murakami, T. Kono, K. Nida, M. Mishina, T.Hirasawa, S. Miyazaki

    Tohoku Geophysical Journal, Science Reports of the Tohoku University, Fifth Series　35　(1)　15-32　1998/04

    Publisher: Faculty of Science, Tohoku University

    ISSN： 0040-8794

  90. Global Positioning System Observation before and after the Hyogo-ken Nanbu Earthquake of January 17, 1995, Japan Peer-reviewed

    KATO Teruyuki, Catane John Patrick L., CHACHIN Toshikazu, FUJIMORI Kunio, HIRAHARA Kazuro, HIRATA Yasuhiro, HOSO Yoshinobu, ICHIKAWA Ryuichi, INOKUCHI Hiroo, ISEZAKI Nobuhiro, IWABUCHI Tetsuya, KASAHARA Minoru, KIMATA Fumiaki, KOTAKE Yoshiko, KUBO Atsuki, KUMAGAI Hiroyuki, MATSUSHIMA Takeshi, MIURA Satoshi, NAKAMURA Kajuro, NAKANO Takehide, NAKAO Shigeru, OKUDA Takashi, OTUSKA Shigeaki, TABEI Takao, TADOKORO Keiichi, TAKAHASHI Hiroaki, TERASHIMA Tsutomu, TOKUYAMA Akira, YAMAMOTO Takeyasu, YAMAOKA Koshun

    測地学会誌　43　(3)　181-207　1997/09/25

    Publisher:

    DOI： 10.11366/sokuchi1954.43.181 　

    ISSN： 0038-0830

  91. Statistically detected anomalous chages in secular variation of crustal deformation Peer-reviewed

    Nakao, S, N. Kato, S. Miura, M. Mishina, K. Yamamoto, T. Hirasawa

    Tohoku Geophysical Journal, Science Reports of the Tohoku University, Fifth Series　34　135-151　1996/04

  92. GPS observations of post-seismic crustal movements in the focal region of the 1995 Hyogo-ken Nanbu Earthquake - Static and real-time kinematic GPS observations Peer-reviewed

    K Hirahara, T Nakano, M Kasahara, H Takahashi, R Ichikawa, S Miura, T Kato, S Nakao, Y Hirata, Y Kotake, T Chachin, F Kimata, K Yamaoka, T Okuda, H Kumagai, K Nakamura, K Fujimori, T Yamamoto, T Terashima, JPL Catane, K Tadokoro, A Kubo, S Otsuka, A Tokuyama, T Tabei, T Iwabuchi, T Matsushima

    JOURNAL OF PHYSICS OF THE EARTH　44　(4)　301-315　1996

    DOI： 10.4294/jpe1952.44.301 　

    ISSN： 0022-3743

  93. Representation for Horizontal Crustal Deformation by Means of Chebychev Polynomials. Peer-reviewed

    Toshiya Sato, Satoshi Miura, Kenji Tachibana

    Journal of the Geodetic Society of Japan　39　(3)　p263-274　1993/09

    Publisher:

    DOI： 10.11366/sokuchi1954.39.263 　

    ISSN： 0038-0830

  94. GPS Observation for Regional Crustal Deformation around the Northeastern Japan Arc Peer-reviewed

    Satoshi Miura, Kenji Tachibana, Keiichi Hashimoto, Eiju Murakami, Toshio Kong, Koichi Nida, Toshiya Sato, Shuichiro Hori

    Journal of the Geodetic Society of Japan　39　(2)　167-178　1993

    DOI： 10.11366/sokuchi1954.39.167 　

    ISSN： 0038-0830

  95. Pre- and post-seismic crustal deformation associated with the 1983 Japan Sea Earthquake Peer-reviewed

    Miura, S, S. Nakao, T. Sato, K. Tachibana, M. Mishina, H. Ishii, A. Takagi

    Tohoku Geophysical Journal Science Reports of the Tohoku University, Fifth Series　33　115-125　1990/04

  96. Earth tide observation by borehole strainmeters and extensometers in Tohoku district, Japan Peer-reviewed

    Nakao, S, M. Mishina, S. Miura, T. Sato, K. Tachibana

    Tohoku Geophysical Journal, Science Reports of the Tohoku University, Fifth Series　33　55-67　1990/04

  97. 相模湾周辺におけるＧＰＳ観測（概論） Peer-reviewed

    村田一郎他

    測地学会誌　36　23-36　1990/04

    DOI： 10.11366/sokuchi1954.36.23 　

  98. 相模湾ＧＰＳ合同集中観測－Trimble4000ＳＤによる観測と解析－ Peer-reviewed

    木股文昭他

    測地学会誌　36　155-167　1990/04

    DOI： 10.11366/sokuchi1954.36.155 　

  99. MIGRATION OF VERTICAL DEFORMATIONS AND COUPLING OF ISLAND-ARC PLATE AND SUBDUCTING PLATE Peer-reviewed

    S MIURA, H ISHII, A TAKAGI

    SLOW DEFORMATION AND TRANSMISSION OF STRESS IN THE EARTH　49　125-138　1989

  100. NONLINEAR BAROMETRIC RESPONSE OF BOREHOLE STRAINMETERS AND ITS INTERPRETATION Peer-reviewed

    S NAKAO, AT LINDE, S MIURA, M MISHINA, A TAKAGI

    JOURNAL OF PHYSICS OF THE EARTH　37　(6)　357-383　1989

    DOI： 10.4294/jpe1952.37.357 　

    ISSN： 0022-3743

  101. Time comparisons between video and seismic signals from explosions in the lava lake of Erebus volcano, Antarctica Peer-reviewed

    Dibble, R. R, S. I. D. Barrett, K. Kaminuma, S. Miura, J. Kienle, C. A. Rowe, P. R. Kyle, W. C. McIntosh

    Bull. Disas. Prev. Res. Inst., Kyoto Univ.　38　49-63　1988/04

  102. A Process of Mount Erebus Eruption Peer-reviewed

    Kaminuma, K, S. Miura, R. R. Dibble

    Proc. NIPR Symp. Antarct. Geosci.　2　7-16　1988/04

  103. Temperature measurements in the crater of Mount Erebus, Ross Island, Antarctica Peer-reviewed

    Miura, S, K. Kaminuma, R. R. Dibble

    Proc. NIPR Symp. Antarct. Geosci.　2　17-24　1988/04

  104. Measurements and interpretation of Gravity Anomaly in and around Ross Island, Antarctica Peer-reviewed

    Miura, S, K. Kaminuma

    Proc. NIPR Symp. Antarct. Geosci.　2　25-30　1988/04

  105. Episodic aseismic earthquake precursors Peer-reviewed

    Alan T. Linde, Kiyoshi Suyehiro, Satoshi Miura, I. Selwyn Sacks, Akio Takagi

    Nature　334　(6182)　513-515　1988

    DOI： 10.1038/334513a0 　

    ISSN： 0028-0836

  106. Seismic Activity of Mount Erebus in 1984-1985 Peer-reviewed

    Kaminuma, K, J. Amino, S. Miura

    Proc. NIPR Symp. Antarct. Geosci.　1　1-5　1987/04

  107. Episodic Aseismic Strain Signals; Precursors to the Japan Sea Earthquake of 1983 Peer-reviewed

    Linde, A. T, K. Suyehiro, S. Miura, I. S. Sacks, A. Takagi

    Tohoku Geophysical Journal, Science Reports of the Tohoku University, Fifth Series　31　29-42　1987/04

  108. Gravity survey in Ross Island, Antarctica Peer-reviewed

    Miura, S, K. Kaminuma, E. Koyama

    Proc. NIPR Symp. Antarct. Geosci.　1　6-14　1987/04

  109. Large-scale crustal movements before and after the 1983 japan sea earthquake Peer-reviewed

    Hiroshi Ishii, Akio Takagi

    Journal of Physics of the Earth　34　S159-S174　1986

    DOI： 10.4294/jpe1952.34.Supplement_S159 　

    ISSN： 0022-3743

  110. Crustal strain, crustal stress and microearthquake activity in the northeastern Japan arc Peer-reviewed

    Hiroshi Ishii, Toshiya Sato, Kenji Tachibana, Keiichi Hashimoto, Eijyu Murakami, Masaaki Mishina, Satoshi Miura, Kachishige Sato, Akio Takagi

    Developments in Geotectonics　20　(C)　217-230　1983/01/01

    DOI： 10.1016/B978-0-444-42243-9.50036-9 　

    ISSN： 0419-0254

  111. CRUSTAL STRAIN, CRUSTAL STRESS AND MICROEARTHQUAKE ACTIVITY IN THE NORTHEASTERN JAPAN ARC Peer-reviewed

    H ISHII, T SATO, K TACHIBANA, K HASHIMOTO, E MURAKAMI, M MISHINA, S MIURA, K SATO, A TAKAGI

    TECTONOPHYSICS　97　(1-4)　217-230　1983

    DOI： 10.1016/0040-1951(83)90149-X 　

    ISSN： 0040-1951

  112. 傾斜多層媒質中を伝播する任意の変換回数をもつ変換波と屈折波の走時計算 Peer-reviewed

    三浦哲, 石井紘

    地震 第2輯　35　(3)　469-471　1982/04

    Publisher:

    DOI： 10.4294/zisin1948.35.3_469 　

    ISSN： 0037-1114

Show all ︎Show first 5

Misc. 112

  1. 干渉SAR時系列解析による桜島の地盤変動

    三浦 哲, 森下 遊, 太田雄策, 出町知嗣

    地殻活動研究委員会報告書（令和2年度）　46　55-60　2021/03

  2. 2015年蔵王山膨張イベントの変動源

    三浦 哲, 山本 希, 太田雄策, 市來雅啓, 出町知嗣

    地殻活動研究委員会報告書（令和元年度）　44　7-14　2021/03

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    知北和久, 後藤章夫, 岡田純, 三浦哲, 山本希

    日本地球惑星科学連合大会予稿集(Web)　2021　2021

  4. Hypocenter determination of volcanic earthquakes at Azuma volcano: analyses of seismic array data of fiber optics and DAS system

    西村太志, 江本賢太郎, 中原恒, 三浦哲, 山本希, 杉村俊輔, 植田尚大, 石川歩, 木村恒久

    日本地球惑星科学連合大会予稿集(Web)　2020　2020

  5. Estimation of Site Amplification of Azuma volcano: Analyses of Seismic Signals Recorded by Fiber Optic Cable and DAS

    西村太志, 江本賢太郎, 中原恒, 三浦哲, 山本希, 杉村俊輔, 石川歩, 木村恒久

    日本地震学会秋季大会講演予稿集(CD-ROM)　2020　2020

  6. Estimates of hydrological, thermal and chemical budgets of Okama Crater Lake, Zao Volcano, Japan: A preliminary study

    知北和久, 後藤章夫, 岡田純, 三浦哲, 山本希

    日本地球惑星科学連合大会予稿集(Web)　2020　2020

  7. 霧島山高千穂河原における重力連続観測

    三浦 哲, 金 娧希, 出町知嗣, 中尾 茂, 木村一洋, 森田裕一

    地殻活動研究委員会報告書（平成30年度）　42　1-5　2019/03

  8. On the Source Characteristics of Demagnetization and Ground Deformation Associated with Non-magmatic Activity

    橋本武志, 宇津木充, 大倉敬宏, 神田径, 寺田暁彦, 三浦哲, 井口正人

    火山　64　(2)　2019

    ISSN： 0453-4360

  9. 蔵王山の2015年膨張イベント

    三浦哲, 山本希, 市來雅啓, 出町知嗣

    日本地球惑星科学連合大会予稿集(Web)　2019　2019

  10. 2015年蔵王山膨張イベントの変動源

    三浦哲, 山本希, 太田雄策, 出町知嗣, 立花憲司, 市來雅啓

    日本火山学会講演予稿集　2019　2019

    ISSN： 2433-5320

  11. Post‐seismic deformation of 2016 Kumamoto Earthquake by continuous GNSS network (3)

    NAKAO Shigeru, MATSUSHIMA Takeshi, TABEI Takao, OKUBO Makoto, YAMASHINA Tadashi, OHKURA Takahiro, NISHIMURA Takuya, NISHIMURA Takuya, SHIBUTANI Takuo, TERAISHI Masahiro, ITO Takeo, SAGIYA Takeshi, MATSUHIRO Kenjiro, KATO Teruyuki, FUKUDA Jun’ichi, WATANABE Atsushi, MIURA Satoshi, OHTA Yusaku, DEMACHI Tomotsugu, TAKAHASHI Hiroaki, OHZONO Mako, YAMAGUCHI Teruhiro, OKADA Kazumi

    日本地球惑星科学連合大会予稿集(Web)　2019　ROMBUNNO.SSS16‐P23 (WEB ONLY)　2019

  12. 2016年熊本地震後のGNSSによる地殻変動観測(3)

    中尾茂, 松島健, 田部井隆雄, 大久保慎人, 山品匡史, 大倉敬宏, 西村卓也, 澁谷拓郎, 寺石眞弘, 伊藤武男, 鷺谷威, 松廣健二郎, 加藤照之, 福田淳一, 渡邉篤志, 三浦哲, 太田雄策, 出町知嗣, 高橋浩晃, 大園真子, 山口照寛, 岡田和見

    日本測地学会講演会要旨　130th　173‐174　2018/10/16

  13. サブミリ測地解析による火山活動モニタリング (地殻活動研究委員会報告書(平成29年度))

    三浦 哲, 山本 希, 市來 雅啓, 出町 知嗣, 立花 憲司, 西村 太志

    東濃地震科学研究所報告　(40)　81-85　2018/03

    Publisher: 地震予知総合研究振興会東濃地震科学研究所

  14. サブミリ測地解析による火山活動モニタリング

    三浦 哲, 山本 希, 市來雅啓, 出町知嗣, 立花憲司, 西村太志

    地殻活動研究委員会報告書（平成29年度）　40　81-86　2018/03

  15. 非噴火期の地盤膨張源および消磁源の特徴について

    橋本武志, 宇津木充, 大倉敬宏, 神田径, 寺田暁彦, 三浦哲, 井口正人

    日本地球惑星科学連合大会予稿集(Web)　2018　2018

  16. Post‐seismic deformation of 2016 Kumamoto Earthquake by continuous GNSS network (2)

    NAKAO Shigeru, MATSUSHIMA Takeshi, TABEI Takao, OKUBO Makoto, YAMASHINA Tadashi, OHKURA Takahiro, NISHIMURA Takuya, SHIBUTANI Takuo, TERAISHI Masahiro, ITO Takeo, SAGIYA Takeshi, MATSUHIRO Kenjiro, KATO Teruyuki, FUKUDA Jun’ichi, WATANABE Atsushi, MIURA Satoshi, OHTA Yusaku, DEMACHI Tomotsugu, TAKAHASHI Hiroaki, OHZONO Mako, YAMAGUCHI Teruhiro, OKADA Kazumi

    日本地球惑星科学連合大会予稿集(Web)　2018　ROMBUNNO.SSS09‐P04 (WEB ONLY)　2018

  17. 2016年熊本地震後のGNSSによる余効変動の観測(2)

    中尾茂, 松島健, 田部井隆雄, 山品匡史, 大倉敬宏, 西村卓也, 澁谷拓郎, 寺石眞弘, 伊藤武男, 鷺谷威, 松廣健二郎, 加藤照之, 福田淳一, 渡邉篤志, 三浦哲, 太田雄策, 出町知嗣, 高橋浩晃, 大園真子, 山口照寛, 岡田和見

    日本地震学会秋季大会講演予稿集(CD-ROM)　2017　ROMBUNNO.S22‐14　2017/10/06

  18. 2016年熊本地震後のGNSSによる地殻変動観測

    中尾茂, 松島健, 田部井隆雄, 大久保慎人, 山品匡史, 大倉敬宏, 西村卓也, 澁谷拓郎, 寺石眞弘, 伊藤武男, 鷺谷威, 松廣健二郎, 加藤照之, 福田淳一, 渡邉篤志, 三浦哲, 太田雄策, 出町知嗣, 高橋浩晃, 大園真子, 山口照寛, 岡田和見

    日本測地学会講演会要旨　128th　153‐154　2017/10/04

  19. 超伝導重力計とgPhoneの比較観測

    三浦 哲, 金 娧希, 池田 博, 田村 良明

    東濃地震科学研究所報告　38　(38)　141-145　2017/03

    Publisher: 地震予知総合研究振興会東濃地震科学研究所

  20. 2016年熊本地震後のGNSSによる地殻変動観測

    中尾茂, 松島健, 田部井隆雄, 大久保慎人, 山品匡史, 大倉敬宏, 西村卓也, 澁谷拓郎, 寺石眞弘, 伊藤武男, 鷺谷威, 松廣健二郎, 加藤照之, 福田淳一, 渡邉篤志, 三浦哲, 太田雄策, 出町知嗣, 高橋浩晃, 大園真子, 山口照寛, 岡田和見

    日本測地学会講演会要旨　126th　141‐142　2016/10/19

  21. 2016年熊本地震後のGNSSによる余効変動の観測

    中尾茂, 松島健, 田部井隆雄, 山品匡史, 大倉敬宏, 西村卓也, 澁谷拓郎, 寺石眞弘, 伊藤武男, 鷺谷威, 松廣健二郎, 加藤照之, 福田淳一, 渡邉篤志, 三浦哲, 太田雄策, 出町知嗣, 高橋浩晃, 大園真子, 山口照寛, 岡田和見

    日本地震学会秋季大会講演予稿集　2016　23　2016/09/16

  22. 平成27年度 技術業務報告 蔵王山で実施した2015年人工地震火山体構造探査

    中山 貴史, 平原 聡, 山本 希, 三浦 哲, 市來 雅啓

    東京大学地震研究所技術研究報告　(22)　36-38　2016

    Publisher: 東京大学地震研究所

    ISSN： 1342-6486

  23. N型地震の振動特性から推定された吾妻山浅部熱水系の時間発展

    鳥本達矢, 山本希, 三浦哲, 植木貞人

    日本火山学会講演予稿集　2016　2016

    ISSN： 2433-5320

  24. N型地震の震動特性からみた2008年以降の吾妻山における浅部熱水系の時間発展

    鳥本達矢, 山本希, 三浦哲, 植木貞人

    日本地球惑星科学連合大会予稿集(Web)　2016　2016

  25. 吾妻山周辺の観測網強化

    三浦哲, 山本希, 市來雅啓, 出町知嗣, 立花憲司, 佐藤俊也

    東濃地震科学研究所報告　(36)　2016

  26. 吾妻山の火山活動

    三浦哲, 山本希, 市來雅啓, 太田雄策, 出町知嗣, 立花憲司, 佐藤俊也

    東濃地震科学研究所報告　(36)　2016

  27. GNSSによる2016年熊本地震発生後の地殻変動観測

    中尾茂, 松島健, 田部井隆雄, 山品匡史, 大倉敬宏, 西村卓也, 澁谷拓郎, 寺石眞弘, 伊藤武男, 鷺谷威, 松廣健二郎, 加藤照之, 福田淳一, 渡邉篤志, 三浦哲, 太田雄策, 出町知嗣, 高橋浩晃, 大園真子, 山口照寛, 岡田和見

    日本地球惑星科学連合大会予稿集(Web)　2016　ROMBUNNO.MIS34‐P31 (WEB ONLY)　2016

  28. 蔵王山における人工地震構造探査

    山本希, 三浦哲, 市來雅啓, 青山裕, 筒井智樹, 江本賢太郎, 平原聡, 中山貴史, 鳥本達矢, 大湊隆雄, 渡邉篤志, 安藤美和子, 前田裕太, 松島健, 中元真美, 宮町凛太郎, 大倉敬宏, 吉川慎, 宮町宏樹, 柳澤宏彰, 長門信也

    日本地球惑星科学連合大会予稿集(Web)　2016　ROMBUNNO.SVC47‐21 (WEB ONLY)　2016

  29. 東北地方の火山活動

    三浦 哲

    はくさん（仙台工業団地協同組合機関誌）　20　3-7　2015/11/25

  30. 2015年5-6月にアラスカ南東部で測定された絶対重力値

    風間卓仁, 三浦哲, 福田洋一, M. Kaufman, K. DeGrandpre, J.T. Freymueller

    日本測地学会第124回講演会, P24, 福岡県福岡市 (poster)　2015/10

  31. アラスカ南東部で観測された絶対重力変化の再検討

    風間卓仁, 福田洋一, 佐藤忠弘, 太田雄策, 三浦哲

    日本地球惑星科学連合2015年大会, SGD21-01, 千葉県千葉市 (oral)　2015/05

  32. 蔵王山周辺の地殻変動(2) (地殻活動研究委員会報告書(平成26年度))

    三浦 哲, 太田 雄策, 出町 知嗣

    東濃地震科学研究所報告　(34)　39-44　2015/03

    Publisher: 地震予知総合研究振興会東濃地震科学研究所

  33. N型地震の振動特性からみた吾妻山熱水系の時間発展

    鳥本達矢, 山本希, 三浦哲, 植木貞人

    日本地震学会秋季大会講演予稿集　2015　2015

  34. 蔵王山総合観測における地震観測網の展開

    平原聡, 三浦哲, 岡田知己, 中山貴史, 太田雄策, 立花憲司, 出町知嗣, 市來雅啓, 海田俊輝, 山本希, 西村太志, 大園真子

    東京大学地震研究所技術研究報告　(20)　2015

    ISSN： 1342-6486

  35. 吾妻山周辺の地殻変動

    三浦哲, 山本希, 市來雅啓, 西村太志, 太田雄策, 出町知嗣

    日本地球惑星科学連合大会予稿集(Web)　2015　2015

  36. A fundamental study to detection of magma transfer from Aira caldera

    2014/06

  37. 蔵王山周辺の地殻変動 (地殻活動研究委員会報告書(平成25年度))

    三浦 哲, 太田 雄策, 出町 知嗣

    東濃地震科学研究所報告　(32)　39-45　2014/03

    Publisher: 地震予知総合研究振興会東濃地震科学研究所

  38. A3-13 Shallow long-period seismic events at Zao volcano

    Yamamoto Mare, Miura Satoshi, Ichiki Masahiro, Hirahara Satoshi

    PROGRAMME AND ABSTRACTS THE VOLCANOLOGICAL SOCIETY OF JAPAN　2014　53-53　2014

    Publisher: The Volcanological Society of Japan

    DOI： 10.18940/vsj.2014.0_53 　

    ISSN： 2433-5320

  39. B1-05 Postseismic strain anomaly along Volcanic Front after the 2011 Tohoku Earthquake

    Miura Satoshi, Ohta Yusaku, Iinuma Takeshi, Demachi Tomotsugu, Tachibana Kenji, Sato Toshiya, Ohzono Mako

    PROGRAMME AND ABSTRACTS THE VOLCANOLOGICAL SOCIETY OF JAPAN　2014　59-59　2014

    Publisher: The Volcanological Society of Japan

    DOI： 10.18940/vsj.2014.0_59 　

    ISSN： 2433-5320

  40. 桜島火山における反復地震探査（2013年)

    筒井智樹, 井口正人, 中道治久, 為栗健, 八木原寛, 大湊隆雄, 菅井明, 大島弘光, 三浦哲, 山本希, 市來雅啓, 野上健治, 武尾実, 市原美恵, 及川純, 山中佳子, 大倉敬宏, 安部祐希, 清水洋, 山下裕亮, 宮町宏樹, 小林励司, 味喜大介, 山本圭吾, 前川徳光, 平原聡, 渡邉篤志, 奥田隆, 堀川信一郎, 松廣健二郎, 園田忠臣, 関健次郎, 吉川慎, 平野舟一郎, 渡邊幸弘, 碓井勇二, 小林宰, 池田啓二, 長門信也, 小枝智幸

    日本地球惑星科学連合2014年大会　SVC55-P25　2014

  41. 超伝導重力計iGrav #003を用いたアラスカ南東部における重力連続観測

    風間卓仁, 三浦哲, 早河秀章, 佐藤忠弘, M. Kaufman, J.T. Freymueller

    日本測地学会第120回講演会, P-11, 立川 (poster)　2013/10

  42. A2-18 Crustal deformation around Zao Volcano observed by GPS

    Miura Satoshi, Ohta Yusaku, Demachi Tomotsugu, Tachibana Kenji, Ohmi Katsuya, Shinohara Eiichiro

    Programme and abstracts the Volcanological Society of Japan　2013　37-37　2013/09/29

    Publisher: Volcanological Society of Japan

  43. 絶対重力計FG5および超伝導重力計iGravを用いたアラスカ南東部における重力観測

    風間卓仁, 佐藤忠弘, 太田雄策, 三浦哲, M. Kaufman, S. Herreid, J. Freymueller

    日本測地学会第118回講演会, 21, 仙台 (oral)　2012/10/31

  44. Seismic observation network and surveillance study activities immediately after the 2011 off the Pacific coast of Tohoku Earthquake

    TAKANO Kiyoshi, TSURUOKA Hiroshi, URABE Taku, NAKAGAWA Shigeki, MIURA Satoshi

    IEICE technical report. Internet Architecture　111　(229)　11-14　2011/10/05

    Publisher: The Institute of Electronics, Information and Communication Engineers

    ISSN： 0913-5685

    More details Close

    We report the damage of seismic observation network of Tohoku area immediately after the 2011 off the Pacific coast of Tohoku Earthquake on March 11, and surveillance study activities of the earthquake researchers of the whole country from the day of the great earthquake disaster.

  45. 津波計としての地殻変動連続観測 (地殻活動研究委員会報告書(平成21年度))

    三浦 哲, 高塚 晃多, 太田 雄策

    東濃地震科学研究所報告　(25)　155-167　2010/03

    Publisher: 地震予知総合研究振興会東濃地震科学研究所

  46. Metal Detector Visualization System using RTK-GPS and its application to surveys in landslides by Iwate-Miyagi Nairiku Earthquake

    SATO Motoyuki, PARISOD Antoine, KIDO Takashi, MIURA Satoshi, OHTA Yusaku

    IEICE technical report　109　(219)　79-84　2009/10/01

    Publisher: The Institute of Electronics, Information and Communication Engineers

    ISSN： 0913-5685

    More details Close

    17 people were killed and 6 people are-still missing by the Iwate-Miyagi Nairiku Earthquake occurred in June 2008. Most of the disaster were caused by landslides in mountain side in Miyagi prefecture, North Japan. In order to detect automobiles buried in deep soil, we developed a system combining a metal detector (EMI sensors) for UXO detection with RTK-GPS, which can visualize the metal detector response. Due to the high accuracy of the positioning by RTK-GPS, 3D visualization of the metal detector response on the steep slope of 50m in width by 150m in height at maximum 45 degree was obtained. We found that we can roughly identify the shape of the buried metal objects, and therefore we could discriminate larger objects from metal fragments such as reinforcement bars in concrete blocks. We identified three possible points where cars can be buried in that area.

  47. Postseismic deformation associated with off Fukushima earthquakes as inferred data of borehole strainmeters

    Mishina Masaaki, Tachibana Kenji, Miura Satoshi

    Geophysical bulletin of Hokkaido University　72　(72)　287-298　2009/03

    Publisher: Department of Natural History Sciences (Geophysics), Graduate School of Science, Hokkaido University

    DOI： 10.14943/gbhu.72.287 　

    ISSN： 0439-3503

  48. Coseismic fault model of the 2008 Iwate-Miyagi Nairiku earthquake deduced by a dense GPS network

    OHTA Yusaku, OHZONO Mako, MIURA Satoshi, IINUMA Takeshi, TACHIBANA Kenji, TAKATSUKA Kota, MIYAO Kayo, SATO Toshiya, UMINO Norihito

    EPS　60　(12)　1197-1201　2008/12/01

    Publisher: Terra Scientific Pub. Co.

    ISSN： 1343-8832

  49. Postseismic slip associated with the 2007 Chuetsu-oki, Niigata, Japan, Earthquake (M 6.8 on 16 July 2007) as inferred from GPS data

    IINUMA Takeshi, OHTA Yusaku, MIURA Satoshi, TACHIBANA Kenji, MATSUSHIMA Takeshi, TAKAHASHI Hiroaki, SAGIYA Takeshi, ITO Takeo, MIYAZAKI Shin'ichi, DOKE Ryosuke, TAKEUCHI Akira, MIYAO Kayo, HIRAO Akihiko, MAEDA Takahiro, YAMAGUCHI Teruhiro, TAKADA Masamitsu, IWAKUNI Makiko, OCHI Tadafumi, MEILANO Irwan, HASEGAWA Akira

    EPS　60　(11)　1087-1091　2008/11/01

    Publisher: Terra Scientific Pub. Co.

    ISSN： 1343-8832

  50. 2008年岩手・宮城内陸地震(M7.2)に伴った地震時・地震後地殻変動

    三浦哲, 太田雄策, 大園真子, 飯沼卓史, 立花憲司, 植木貞人, 高塚晃太, 宮尾佳世, 佐藤俊也, 対馬弘晃, 高橋浩晃, 山口照寛, 笠原稔, 鷺谷威, 小澤和浩, 福田真人, 朝日友香, 松島健, 中元真美, 山下裕亮, 中尾茂

    日本地震学会秋季大会講演予稿集　2008　5　2008/11/01

  51. 稠密GPS観測網による2008年岩手・宮城内陸地震の余効変動の時空間変化推定

    飯沼卓史, 大園真子, 太田雄策, 三浦哲, 植木貞人, 高塚晃多, 対馬弘晃, 立花憲司, 松島健, 中元真美, 山下裕亮, 鷺谷威, 小澤和浩, 福田真人, 朝日友香, 笠原稔, 高橋浩晃, 山口照寛, 中尾茂

    日本測地学会講演会要旨　110th　149-150　2008/10

  52. 2008年岩手・宮城内陸地震(M7.2)に伴った地震時・地震後地殻変動

    三浦哲, 太田雄策, 大園真子, 飯沼卓史, 立花憲司, 植木貞人, 高塚晃多, 宮尾佳世, 佐藤俊也, 対馬弘晃, 高橋浩晃, 山口照寛, 笠原稔, 鷺谷威, 小澤和浩, 福田真人, 朝日友香, 松島健, 中元真美, 山下裕亮, 中尾茂

    日本地震学会ニュースレター　20　(4)　10-14　2008/10

  53. JGN2の高速広域レイヤー2網を用いたリアルタイム地震観測波形データ交換システムの構築研究プロジェクトについて

    鷹野 澄, 卜部 卓, 鶴岡 弘, 中川 茂樹, 平田 直, 酒井 慎一, 三浦 哲, 松澤 暢, 岡田 知己, 中島 淳一, 内田 直希, 中山 貴史, 平原 聡, 大見 士朗, 伊藤 武男, 中道 治久, 植平 賢司, 松島 健, 一柳 昌義, 高田 真秀, 山口 照寛, 高橋 浩晃, 笠原 稔, 須田 直樹, 小原 一成, 関根 秀太郎, 松村 稔, 針生 義勝

    日本地震学会ニュースレター　19　(6)　10-12　2008/03/10

    ISSN： 0919-5319

  54. Seismic and Tsunami wave signal detection of the 2004 Sumatra- Andaman earthquake by high-rate kinematic GPS and broadband seismometer analysis

    Ohta.Y, K.Takatsuka, S.Miura, T.Sato

    Proceedings of Symposium on Giant Earthquakes and Tsunamis　1　(1)　135-141　2008

  55. プレートの沈み込みと大地震発生メ カニズム ―最新の研究成果から―

    三浦哲

    第39回溶融塩化学討論会講演要旨集　49-50　2007/11

  56. 稠密GPS観測に基づく2007年中越沖地震の余効変動

    太田雄策, 三浦哲, 立花憲司, 飯沼卓史, 松島健, 高橋浩晃, 宮崎真一, 鷺谷威, 伊藤武男, 道家涼介, 竹内章, 宮尾佳世, 平尾暁彦, 前田宜浩, 山口照寛, 高田真秀, 岩國真紀子, 落唯史, MEILANO Irwan

    日本地震学会秋季大会講演予稿集　2007　182　2007/10/01

  57. 稠密GPS観測網による2007年中越沖地震の余効変動観測 その2 余効変動の時空間変化推定

    飯沼卓史, 太田雄策, 三浦哲, 立花憲司, 長谷川昭, 宮尾佳世, 松島健, 平尾暁彦, 高橋浩晃, 前田宜浩, 山口照寛, 高田真秀, 宮崎真一, 岩國真紀子, 落唯史, 鷺谷威, 伊藤武男, MEILANO Irwan, 道家涼介, 竹内章

    日本測地学会講演会要旨　108th　49-50　2007/10

  58. 稠密GPS観測網による2007年中越沖地震の余効変動観測 その1―GPS臨時観測の概要―

    太田雄策, 三浦哲, 立花憲司, 飯沼卓史, 松島健, 高橋浩晃, 宮崎真一, 鷺谷威, 伊藤武男, 道家涼介, 竹内章, 宮尾佳世, 平尾暁彦, 前田宜浩, 山口照寛, 高田真秀, 岩國真紀子, 落唯史, MEILANO Irwan

    日本測地学会講演会要旨　108th　47-48　2007/10

  59. 氷の島の火山－冷気と蒸気がおりなす南極「エレバス山」の風景

    三浦哲

    Newton　27　(5)　88-95　2007/04

  60. プレート境界大地震の発生予測の現状―2005年8月16日の宮城沖地震(M7.2)と想定宮城県沖地震―

    三浦哲

    技術士東北　42　(4)　34-37　2006/11

  61. 岩手火山におけるGPS連続観測－主として1999年の変動について－

    植木貞人, 三浦哲, 佐藤俊也, 立花憲司, 浜口博之

    1999年岩手火山集中観測報告　61-67　2006

  62. 岩手火山における重力変化観測

    植木貞人, 前川徳光, 佐藤俊也, 仁田交市, 三浦哲

    1999年岩手火山集中観測報告　81-91　2006

  63. 相似地震・GPS解析から推定された十勝沖及び釧路沖アスペリティ周辺の準静的すべり (地殻活動研究委員会報告書(平成16年度))

    三浦 哲, 油井 智史, 長谷川 昭

    東濃地震科学研究所報告　(16)　37-57　2005/10

    Publisher: 地震予知総合研究振興会東濃地震科学研究所

  64. 超高速ネットワークJGNIIによるリアルタイム地震波形データ交換システムの構築実験

    鷹野澄, 卜部卓, 鶴岡弘, 中川茂樹, 三浦哲, 松沢暢, 岡田知己, 中島淳一, 中山貴史, 平原聡, 伊藤武男, 大見士朗, 植平賢司, 松島健

    日本地震学会秋季大会講演予稿集　2005　157　2005/10/01

  65. ＧＰＳ連続観測網による長町-利府線断層帯の地殻変動

    西村卓也, 鷺谷 威, 三浦 哲

    月刊地球　号外50　75-82　2005/04

  66. 宮城県沖およびその周辺における最近の地震活動と地殻変動

    三浦哲, 油井智史, 長谷川昭, 佐藤俊也, 立花憲司

    月刊地球　27　(2)　126-131　2005/02

    Publisher: 海洋出版

    ISSN： 0387-3498

  67. 測地インバージョンによる2003年宮城県北部地震のすべり分布

    三浦哲, 諏訪謡子, 佐藤俊也, 立花憲司, 長谷川昭

    月刊地球　27　(2)　116-120　2005/02

    Publisher: 海洋出版

    ISSN： 0387-3498

  68. プレート境界大地震その発生予測をめざして

    長谷川昭, 三浦哲

    東北大学総合学術博物館ニュースレター Omnividens　(16)　3-4　2005

  69. 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　(51)　188-192　2005

    Publisher: 海洋出版

    ISSN： 0916-9733

  70. ＧＰＳ連続観測網により得られた東北日本弧の歪分布－火山フロントに沿う歪集中帯－

    三浦 哲, 佐藤俊也, 諏訪謡子, 長谷川 昭, 立花憲司

    月刊地球　号外50　(50)　83-88　2005

    Publisher: 海洋出版

    ISSN： 0916-9733

  71. 測地インバージョンによる2003年5月26日宮城県沖地震（Ｍ7.1）の断層モデルの推定

    油井智史, 諏訪謡子, 三浦哲, 長谷川昭

    月刊地球　27　(1)　35-38　2005/01

    Publisher: 海洋出版

    ISSN： 0387-3498

  72. Recent advances of marine positioning technologies

    MIURA Satoshi, ASADA Akira

    Journal of Japan Society for Marine Surveys and Technology　16　(1)　29-45　2004/03/31

    Publisher: 海洋調査技術学会

    ISSN： 0915-2997

  73. 測地学的データに基づいて推定された2003年宮城県北部地震の断層モデル

    三浦哲, 諏訪謡子, 佐藤俊也, 立花憲司, 長谷川昭

    東北地域災害科学研究　40　65-70　2004/03

    Publisher: 東北大学大学院工学研究科東北地区自然災害資料センター

  74. GPS・音響を用いた海底地殻変動観測

    藤本博巳, 三浦哲, 金沢敏彦, 長田幸仁

    京都大学防災研究所研究集会報告　14K-07　155-159　2003

  75. GPS/Acoustic seafloor positioning experiment in the subduction zone of the Japan Trench

    Fujimoto, H, S. Miura, A. Sweeney, M. Ito, Y. Osada, T. Kanazawa

    Proceedings of Oceans 2003 Marine Technology and Ocean Science Conference,IEEE　#827　2003

  76. Crustal Deformation Associated with the 1998 Seismo-Volcanic Crisis of Iwate Volcano, Northeastern Japan, As Observed by a Dense GPS Network (Extended Abstract)

    Miura Satoshi, Ueki S, Sato T, Tachibana K, Hamaguchi H

    The science reports of the Tohoku University. Fifth series, Tohoku geophysical journal　36　(2)　297-297　2001/09

    Publisher: Faculty of Science, Tohoku University

    ISSN： 0040-8794

  77. Spatio-Temporal Distribution of Interplate Coupling East off Northeastern, Japan Deduced from GPS Observation (Extended Abstract)

    Nishimura Takuya, Miyazaki Shin-Ichi, Sagiya. Takeshi, Tada Takashi, Miura Satoshi, Tanaka Kazuo, Hirasawa Tomowo

    The science reports of the Tohoku University. Fifth series, Tohoku geophysical journal　36　(2)　254-256　2001/09

    Publisher: Faculty of Science, Tohoku University

    ISSN： 0040-8794

  78. ロス島およびその周辺における重力測定

    三浦哲

    月刊地球　35　(号外)　144-145　2001/04

  79. 海底地殻変動観測システムと音響測距

    藤本博巳, 金沢敏彦, 小泉金一郎, 長田幸仁, 三浦哲

    月刊地球　23　(1)　27-32　2001

    Publisher: 海洋出版

    ISSN： 0387-3498

  80. Crustal deformation observed by a dense GPS network around Ou Backbone range, northeastern Japan

    Miura, S, T. Sato, K. Tachibana, Y. Satake, A. Hasegawa

    Proceedings of the International Symposium on Slip and Flow Processes in and below the Seismogenic Region　363-368　2001

  81. Crustal deformation associated with the 2000 eruption of Usu volcano : dual frequencies GPS receivers observation

    Takahashi H., Kimata F., Kasahara M., Okazaki N., Ishimaru S., Mori H. Y., Nakao S., Miura S., Kato T., Matsushima T., Watanabe A.

    PROGRAMME AND ABSTRACTS THE VOLCANOLOGICAL SOCIETY OF JAPAN　2000　41-41　2000

    Publisher: The Volcanological Society of Japan

    DOI： 10.18940/vsj.2000.2.0_41 　

    ISSN： 2433-5320

  82. Spatio-temporal distribution of interplate coupling east off Tohoku district -deduced from GPS observation for five years-

    NISHIMURA Takuya, MIYAZAKI Shin-ichi, SAGIYA Takeshi, TADA Takashi, MIURA Satoshi, HIRASAWA Tomowo, TANAKA Kazuo

    1999　(2)　B65　1999/11/09

  83. Source model of crustal deformation beneath Iwate volcano inferred from GPS observation

    MIURA S., UEKI S., SATO T., TACHIBANA K., HAMAGUCHI H.

    1999　(2)　P155　1999/11/09

  84. Observation system for seismological research newly established at Kamaishi mine

    MIURA S., KONO T., MATSUZAWA T., OKADA T., NIDA K., SATO T., TACHIBANA K., HASHIMOTO K., HASEGAWA A.

    1999　(2)　P175　1999/11/09

  85. Modeling of Deep Slip Process at Seismogenic Inland Faults - GPS Observation and Numerical Modeling -

    SAGIYA Takeshi, NISHIMURA Takuya, TADA Takashi, MIURA Satoshi, IIO Yoshihisa, SHIBAZAKI Bun'ichiro, HORIKAWA Haruo

    日本地震学会講演予稿集 = Programme and abstracts, the Seismological Society of Japan　1999　(2)　A90　1999/11/09

  86. 高密度ＧＰＳ観測により解明された岩手火山の地殻変動

    植木貞人, 三浦 哲, 佐藤俊也, 立花憲司, 浜口博之

    月刊地球　21　(5)　296-301　1999/05

    Publisher: 海洋出版

    ISSN： 0387-3498

  87. 1998年9月3日岩手県内陸北部の地震（Ｍ6.1）の断層近傍で記録された強震動

    中原 恒, 西村太志, 佐藤春夫, 大竹政和, 木下繁夫, 三浦 哲, 植木貞人, 浜口博之

    月刊地球　21　322-326　1999/04

  88. ＧＰＳにより観測された岩手火山の地殻変動

    植木貞人, 三浦哲, 佐藤俊也, 立花憲司, 浜口博之

    東北地域災害科学研究　35　43-48　1999/04

  89. 1994年三陸はるか沖地震の余震効変動と三陸沖プレート間カップリング

    西村卓也, 三浦哲, 立花憲司, 橋本恵一, 佐藤俊也, 堀 修一郎, 村上栄寿, 河野俊夫, 仁田交市, 三品正明, 平澤朋郎, 宮崎真一

    月刊地球　S25　(25)　152-157　1999

    Publisher: 海洋出版

    ISSN： 0916-9733

  90. Crustal Deformation Observed by a GPS Network Associated with the Activity of Iwate Volcano and the Iwateken-hokubu Earthquate(Sep. 3, 1998 ; M6.1)

    UEKI S., MIURA S., SATO T., TACHIBANA K., NIDA K., HAMAGUCHI H.

    1998　(2)　1998/10/09

  91. Crustal Deformation Observed by a Dense GPS Network around Ito, Izu Peninsula, Central Japan and its Source Model -1996-1998-

    SATAKE Yoshimi, MIURA Satoshi, HIRASAWA Tomowo

    1998　(2)　1998/10/09

  92. Re-determination of the Movement of the Amurian Plate

    HEKI Kosuke, MIYAZAKI Shin'ichi, TAKAHASHI Hiroaki, KASAHARA Minoru, KIMATA Fumiaki, MIURA Satoshi, SENO Tetsuzo, VASILENKO N., IVASHCHENKO A., KORCHAGIN F., GITOKU An

    1998　(2)　1998/10/09

  93. Near-source strong-motion records of the northern part of Iwate Prefecture earthquake (M6.1) of September 3, 1998

    NAKAHARA Hisashi, NISHIMURA Takeshi, SATO Haruo, OHTAKE Masakazu, KINOSHITA Shigeo, MIURA Satoshi, UEKI Sadato, HAMAGUCHI Hiroyuki

    1998　(2)　1998/10/09

  94. 東北日本弧の地殻変形過程と応力集中過程の解明－歪、応力、強度の時空間分布推定による－

    長谷川 昭, 堀内茂木, 海野徳仁, 山本 明, 山本清彦, 三品正明, 三浦哲, 佐藤魂夫, 小菅正裕, 長谷見晶子, 松本 聡, 伊東明彦

    月刊地球　S20　(20)　22-25　1998/04

    Publisher: 海洋出版

    ISSN： 0916-9733

  95. プレート境界地震の発生予測

    山本清彦, 三品正明, 三浦哲, 矢部康男

    月刊地球　S20　(20)　81-84　1998/04

    Publisher: 海洋出版

    ISSN： 0916-9733

  96. Crustal Deformation around Iwate Volcano Observed by a GPS Network

    Ueki S., Miura S., Sato T., Tachibana K., Nida K., Hamaguchi H.

    PROGRAMME AND ABSTRACTS THE VOLCANOLOGICAL SOCIETY OF JAPAN　1998　4-4　1998

    Publisher: The Volcanological Society of Japan

    DOI： 10.18940/vsj.1998.2.0_4 　

    ISSN： 2433-5320

  97. Moment tensor inversion based on strong-motion data recorded around Mount Iwate

    Nakahara Hisashi, Nishimura Takeshi, Kinoshita Shigeo, Sato Haruo, Ohtake Masakazu, Miura Satoshi, Ueki Sadato, Hamaguchi Hiroyuki

    PROGRAMME AND ABSTRACTS THE VOLCANOLOGICAL SOCIETY OF JAPAN　1998　7-7　1998

    Publisher: The Volcanological Society of Japan

    DOI： 10.18940/vsj.1998.2.0_7 　

    ISSN： 2433-5320

  98. GPS観測

    三浦 哲

    日本地震学会ニュースレター　9　(3)　15-16　1997/09/10

    ISSN： 0919-5319

  99. 歪計・傾斜計により観測された津波

    三品正明, 三浦哲, 立花憲司, 西村卓也, 橋本恵一, 村上栄寿

    東北地域災害科学研究　32　157-164　1996/04

  100. 兵庫県南部地震震源域におけるリアルタイムキネマテックGPS観測

    平原和朗, 中野健秀, 松島健, 高橋浩晃, 三浦哲, 市川隆一, 田部井隆雄, 加藤照之, 中尾茂

    日本地震学会秋季大会講演予稿集　1995　181　1995/09

  101. 地震予知に関する研究 兵庫県南部地震におけるGPS観測 (文部省S)

    笠原稔, 三浦哲, 加藤照之, 木股文昭, 平原和郎, 藤森邦夫, 寺島敦, 大塚成昭, 松島健

    平成7年兵庫県南部地震とその被害に関する調査研究 平成6年度 No.06306022　42-54　1995

  102. ジャワ島西部におけるＧＰＳ観測

    田中寅夫, 中村佳重郎, 木股文昭, 村田一郎, 大久保修平, 三浦 哲, Joenil Kahar, Ponimin Mento Sumitro, Kosasih Priatna, Bangbang Setyadji, Agoes Soewandito Soedomo

    京大防災年報　37B-1　(37)　p251-256　1994/04

    Publisher: 京都大学防災研究所

    ISSN： 0386-412X

  103. 深度500ｍにおける歪・傾斜観測－プレートダイナミクス観測システム－

    三浦 哲, 長谷川 昭, 立花憲司, 橋本恵一, 三品正明, 平澤朋郎

    月刊地球　16　320-323　1994/04

  104. Preliminary analyses of the 1992 Sagami Bay GPS campaign using the Bernese GPS software

    Miura, S, T. Sato, K. Tachibana, Y. Sumino, J. Endo, K. Goto, T. Moriguchi, M. Otsu

    Proc. Japanese Symp. on GPS(1993)　5-9　1993/04

  105. ＧＰＳによる東北日本弧の広域地殻変動

    三浦 哲, 橋本恵一, 佐藤俊也, 堀修一郎, 村上栄寿, 立花憲司, 河野俊夫, 仁田交市

    月刊地球　14　436-441　1992/04

  106. GPS observation in Tohoku District, northeastern Japan －Results of 1989-1990－

    Miura, S, K. Hashimoto, T. Sato, S. Hori, E. Murakami, K. Tachibana, T. Kono, K. Nida

    Proc. of the Japanese Symp. on GPS(1991)　157-166　1991/04

  107. GPS observation in Tohoku District, northeastern Japan －Results of 1988-1989－

    Miura, S, S. Nakao, K. Hashimoto, T. Sato, S. Hori, E. Murakami, K. Tachibana, T. Kono, K. Nida

    Proc. of the Japanese Symp. on GPS(1989)　46-54　1989/04

  108. GPS observation in the Tohoku District, Japan －Results of 1988 operarions－

    Miura, S, S. Nakao, K. Hashimoto, T. Sato, S. Hori, E. Murakami, K. Tachibana, T. Kono, K. Nida, A. Takagi

    Proc. of the GPS Workshop 1989　106-113　1989

  109. 42B. Geodetic Measurement by GPS and EDM on Bandai Volcano.(Abstracts of Papers Presented at the Fall Meeting of the Society)

    Ueki S., Miura S., Tachibana K., Nakao S., Yoshida K., Hashimoto K., Hamaguchi H.

    SECOND SERIES BULLETIN OF THE VOLCANOLOGICAL SOCIETY OF JAPAN　33　(4)　351-351　1988

    Publisher: The Volcanological Society of Japan

    DOI： 10.18940/kazanc.33.4_351_2 　

    ISSN： 0453-4360

  110. 42B 磐梯山における GPS 観測および光波測距による測地測量

    植木 貞人, 三浦 哲, 立花 憲司, 中尾 茂, 吉田 佳一郎, 橋本 恵一, 浜口 博之

    日本火山学会講演予稿集　1988　60-60　1988

    Publisher: 特定非営利活動法人 日本火山学会

    DOI： 10.18940/vsj.1988.2.0_60 　

    ISSN： 2433-5320

  111. Gravity Measurements around Mount Erebus, Ross Island, Antarctica.

    Miura S., Kaminuma K., Koyama E.

    Bulletin of the Volcanological Society of Japan. Second series　32　(4)　353-353　1987/12/28

    Publisher: Volcanological Society of Japan

    ISSN： 0453-4360

  112. Volcanic activity of Erebus Volcano, Antarctica.

    Kaminuma K., Amino J., Miura S.

    Bulletin of the Volcanological Society of Japan. Second series　32　(2)　138-138　1987/07/01

    Publisher: Volcanological Society of Japan

    ISSN： 0453-4360

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Books and Other Publications 7

  1. 弾性体力学 : 変形の物理を理解するために

    中島, 淳一(地震学), 三浦, 哲

    共立出版　2014/07

    ISBN: 9784320035157

  2. 現代地球科学入門シリーズ8 測地・津波

    藤本博己, 三浦 哲, 今村文彦

    2013

  3. Using Global Positioning System Data to Assess Tectonic Hazards

    Wallace, L. M, J. Beavan, S. Miura, R. McCaffrey

    Cambridge University Press　2009

  4. The Seismogenic Zone of Subduction Thrust Faults

    Hasegawa, A, N. Uchida, T. Igarashi, T. Matsuzawa, T. Okada, S. Miura, Y. Suwa

    Columbia University Press　2007/08

  5. 海洋調査フロンティア 海を計測する―増補版―

    三浦 哲, 他

    海洋調査技術学会　2004/04

  6. Application of GPS and Other Space Geodetic Techniques to Earth Sciences

    Satoshi Miura, Sadato Ueki, Toshiya Sato, Kenji Tachibana, Hiroyuki Hamaguchi

    Terra Scientific Publishing Company, Tokyo　2000/04

  7. Slow Deformation and Transmission of Stress in the Earth

    Satoshi Miura, Hiroshi Ishii, Akio Takagi

    American Geophysical Union　1989/04

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Presentations 93

  1. Geophysical observations at Zao volcano, Japan

    Yamamoto, M, S. Miura, M. Ichiki

    15th International Workshop on WATER DYNAMICS　2018/03/13

  2. Audio-frequency magnetotelluric, and total magnetic intensity observations in 2014-2016, at Zao volcano, NE Japan

    Ichiki, M, T. Kaida, T. Demachi, S. Hirahara, T. Nakayama, M. Yamamoto, S. Miura, T. Moriyama, M. Akutagawa

    2017 AGU Fall Meeting　2017/12/11

  3. Monitoring of Volcanic Activity by Sub-mm Geodetic Analyses

    Miura, S, M. Yamamoto, M. Ichiki, T. Demachi, K. Tachibana, T. Nishimura

    2017 AGU Fall Meeting　2017/12/11

  4. 北海道・東北地方におけるGNSS速度場のクラスタ解析

    伊藤嘉秋, 三浦哲, 太田雄策

    日本地震学会2017年度秋季大会　2017/10/25

  5. 金華山における2011年東北地方太平洋沖地震前の体積ひずみの挙動について

    高波鐵夫, 有吉雄哉, 斎藤正也, 三浦哲, 内田直希, 出町知嗣, 伊藤喜宏

    日本地震学会2017年度秋季大会　2017/10/25

  6. サブミリ測地解析による火山活動モニタリング

    三浦 哲, 山本 希, 市來雅啓, 出町知嗣, 立花憲司, 西村太志

    日本地震学会2017年度秋季大会　2017/10/25

  7. 北海道・東北地方におけるGNSS速度場のクラスタ解析

    伊藤嘉秋, 三浦哲, 太田雄策

    日本測地学会第128回講演会　2017/10/04

  8. サブミリ測地解析による火山活動モニタリング

    三浦 哲, 山本 希, 市來雅啓, 出町知嗣, 立花憲司, 西村太志

    日本測地学会第128回講演会　2017/10/04

  9. 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

    Iinuma, T, Y. Ohta, S. Miura, J. Muto, F. Tomita, M. Kido, R. Hino

    IAG-IASPEI 2017　2017/07/30

  10. Comparison of Superconducting and Spring Gravimeters at the Mizusawa VLBI Observatory of the National Astronomical Observatory of Japan

    Miura, S, H. Ikeda, T-H. Kim, Y. Tamura

    IAG-IASPEI 2017　2017/07/30

  11. InSAR解析とGNSSデータの比較による吾妻山火山の地殻変動

    阿部 華菜, 小川 佳子, 久田 泰広, 出村 裕英, 三浦 哲, 小澤 拓

    JpGU-AGU Joint Meeting 2017　2017/05/20

  12. 東北地方におけるGNSS速度場のクラスタ解析

    伊藤嘉秋, 三浦哲, 太田雄策

    JpGU-AGU Joint Meeting 2017　2017/05/20

  13. アラスカ南東部のiGrav-003超伝導重力計で観測された陸水重力変化の物理的モデリング

    横山 智也, 風間 卓仁, 三浦 哲, 金 _希, 田村 良明

    JpGU-AGU Joint Meeting 2017　2017/05/20

  14. 高感度地殻歪観測を基にした地球の内部進化と自転効果の解明

    花田 英夫, 大江 昌嗣, 三浦 哲

    JpGU-AGU Joint Meeting 2017　2017/05/20

  15. 国立天文台水沢VLBI観測所における超伝導重力計とスプリング重力計の比較観測

    三浦 哲, 金 _希, 池田 博, 田村 良明

    JpGU-AGU Joint Meeting 2017　2017/05/20

  16. Modeling deformation processes of the island arc crust and mantle during the postseismic periods of the Tohoku-oki earthquake considering the heterogeneous rheological structure

    芝崎 文一郎, 三浦 哲, 野田 朱美, 飯沼 卓史, 松本 拓己

    JpGU-AGU Joint Meeting 2017　2017/05/20

  17. Post-seismic deformation of 2016 Kumamoto Earthquake by continuous GNSS network

    中尾 茂, 他, 数, 三浦 哲, 太田 雄策, 出町 知嗣

    JpGU-AGU Joint Meeting 2017　2017/05/20

  18. 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

    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

    JpGU-AGU Joint Meeting 2017　2017/05/20

  19. Early recurrence of M~6 interpolate earthquake (5.8 years) observed in northern Kanto region, Japan

    Fukushima, Y, S. Toda, S. Miura

    JpGU-AGU Joint Meeting 2017　2017/05/20

  20. Temporal Variation of Interplate Coupling in Java Subduction Zone Based on 2008-2012 GPS Observations

    Kuncoro, H, S. Miura, I. Milano, S. Susilo

    JpGU-AGU Joint Meeting 2017　2017/05/20

  21. Comparison of Superconducting and Spring Gravimeters at the Mizusawa VLBI Observatory of the National Astronomical Observatory of Japan

    Miura, S, H. Ikeda, T-H. Kim, Y. Tamura

    EGU General Assembly 2017　2017/04/23

  22. 蔵王山のAMT観測と全磁力繰り返し観測

    市來雅啓, 海田俊輝, 出町知嗣, 平原聡, 中山貴史, 佐藤真樹子, 山本希, 三浦哲, 森山多加志

    CA研究会2017　2017/01

  23. N型地震の振動特性から推定された吾妻山浅部熱水系の時間発展

    鳥本達矢, 山本希, 三浦哲, 植木貞人

    日本火山学会2016年秋季大会　2016/10/13

  24. 電磁気学的に観た蔵王山の2014-2016年の活動と地殻構造

    市來雅啓, 海田俊輝, 出町知嗣, 平原聡, 中山貴史, 佐藤真樹子, 山本希, 三浦哲, 森山多加志

    日本火山学会2016年度秋季大会　2016/10/13

  25. 蔵王山・吾妻山周辺の火山性地殻変動

    三浦 哲, 太田雄策, 出町知嗣, 立花憲司, 山本 希, 市來雅啓

    日本地球惑星科学連合2016年大会　2016/05/22

  26. N型地震の震動特性からみた2008年以降の吾妻山における浅部熱水系の時間発展

    鳥本達矢, 山本希, 三浦哲, 植木貞人

    日本地球惑星科学連合2016年大会　2016/05/22

  27. 蔵王山における人工地震構造探査

    山本 希, 三浦 哲, 市來 雅啓, 青山 裕, 筒井 智樹, 江本 賢太郎, 平原 聡, 中山 貴史, 鳥本 達矢, ほ

    日本地球惑星科学連合2016年大会　2016/05/22

  28. Block Rotation and Intra-plate Deformation in Java, Indonesia based on GPS observations

    Kuncoro, H, S. Miura, I. Meilano, S. Susilo

    日本地球惑星科学連合2016年大会　2016/05/22

  29. Spatial partitioning between co- and post-seismic slip of the 2011 Tohoku Earthquake based on seafloor and terrestrial geophysical observations

    Iinuma, T, R. Hino, N. Uchida, W. Nakamura, M. Kido, Y. Osada, S. Miura

    2015 AGU Fall Meeting　2015/12/13

  30. Crustal deformation associated with the unrest of Azumayama Volcano International-presentation

    Miura, S, M. Yamamoto, M. Ichiki, T. Nishimura, Y. Ohta, T. Demachi

    AOGS 2015　2015/08/04

  31. 地殻変動に起因する大気中ラドン濃度変動

    岩田 大地, 長濱 裕幸, 武藤 潤, 安岡 由美, 三浦 哲, 太田 雄策

    日本地球惑星科学連合2015年大会　2015/05/24

  32. GEONETリアルタイム解析を用いた地震規模即時推定システム（REGARD）の概要

    佐藤 雄大, 宮川 康平, 川元 智司, 健一, 村松 弘規, 犬飼 孝明, 太田 雄策, 出町 知嗣, 三浦 哲, 日野 亮太, 中村 康弘, 西山 眞衣, 道家 友紀

    日本地球惑星科学連合2015年大会　2015/05/24

  33. 吾妻山周辺の地殻変動

    三浦 哲, 山本 希, 市來 雅啓, 西村 太志, 太田 雄策, 出町 知嗣

    日本地球惑星科学連合2015年大会　2015/05/24

  34. 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

    富田 史章, 木戸 元之, 長田 幸仁, 日野 亮太, 太田 雄策, 飯沼 卓史, 東 龍介, 和田 育子, 三浦 哲

    日本地球惑星科学連合2015年大会　2015/05/24

  35. アラスカ南東部で観測された絶対重力変化の再検討

    風間 卓仁, 福田 洋一, 佐藤 忠弘, 太田 雄策, 三浦 哲

    日本地球惑星科学連合2015年大会　2015/05/24

  36. 存否法を用いたN型地震の波形解析

    鳥本達矢, 山本希, 三浦哲, 植木貞人

    日本地球惑星科学連合2015年大会　2015/05/24

  37. GPS観測による蔵王山周辺の地殻変動

    日本測地学会第120回講演会　2013/10/29

  38. GPS 観測による蔵王山周辺の地殻変動

    太田雄策, 出町知嗣, 立花憲司, 近江克也, 篠原英一郎

    日本火山学会2013年秋季大会　2013/09/29

  39. 内陸地震発生過程の解明

    「地震及び火山噴火予知のための観測研究計画」成果報告シンポジウム　2010/03

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    3/3～3/5

  40. 宮城県沖プレート境界の多項目・高精度モニタリングによる大地震発生過程の解明

    「地震及び火山噴火予知のための観測研究計画」成果報告シンポジウム　2010/03

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    3/3～3/5

  41. RTK-GPS と金属探知機による2008 年岩手・宮城内陸地震被災者の捜索

    三浦哲, 太田雄策, アントワン パリソド, 城戸隆, 佐藤源之

    日本測地学会第112回講演会　2009/11

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    2009/11/4～11/6

  42. 陸上GPS観測に基づく2005年宮城県沖地震の余効変動

    海上保安庁海洋情報部海洋研究室セミナー　2009/06

  43. 測地データによる1978年・2005年宮城沖地震の比較

    三浦哲, 飯沼卓史, 太田雄策

    日本地球惑星科学連合2009年大会　2009/05

  44. Geodetic measurements for monitoring rapid crustal uplift in southeastern Alaska caused by the recent deglaciation International-presentation

    Miura, S, W. Sun, T. Sugano, A. Kaufman, T. Sato, H. Fujimoto, Y. Ohta, C. Larsen, J. Freymueller

    AGU 2008 Fall meeting　2008/12

  45. 2008年岩手・宮城内陸地震（M7.2）に伴った地震時・地震後地殻変動 International-presentation

    三浦哲, 太田雄策, 大園真子, 飯沼卓史, 立花憲司, 植木貞人, 高塚晃多, 宮尾佳世, 佐藤俊也, 対馬弘晃, 高橋浩晃, 山口照寛, 笠原稔, 鷺谷威, 小澤和浩, 福田真人, 朝日友香, 松島健, 中元真美, 山下裕亮, 中尾茂

    ASC・SSJ合同大会　2008/11

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    11/24～27 つくば国際会議場 Tsukuba International Congress Center (EPOCHAL TSUKUBA) 7th General Assembly of Asian Seismological Commission and Seismological Society of Japan, 2008 Fall meeting

  46. Geodetic measurements for monitoring rapid crustal uplift in southeastern Alaska caused by the recent deglaciation International-presentation

    Miura, S, T. Sato, H. Fujimoto, Y. Ohta, W. Sun, T. Sugano, A. Kaufman, C. Larsen, J. T. Freymueller

    ASC-SSJ合同大会　2008/11

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    11/24~27 7th General Assembly of Asian Seismological Commission and Seismological Society of Japan, 2008 Fall meeting Tsukuba International Congress Center (EPOCHAL TSUKUBA)

  47. アラスカ州南東部における氷河融解に伴う高速地殻隆起・長期的重力変化の観測

    三浦哲, 佐藤忠弘, 藤本博己, 太田雄策, 孫文科, 菅野貴之, M. Kaufman, C. Larsen, J. T. Freymueller

    日本測地学会第110回講演会　2008/10

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    函館市民会館

  48. Long term gravity change and rapid uplifting caused by glacial isostatic adjustment in southeastern Alaska International-presentation

    Miura, S, T, Sato, W. Sun, T. Sugano, A. M. Kaufman, J. T. Freymuller, H. Fujimoto

    AGU 2007 Fall Meeting　2007/12

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    Moscone Center

  49. プレートの沈み込みと大地震発生メ カニズム ―最新の研究成果から―

    第39回溶融塩化学討論会　2007/11

  50. アラスカ州南東部における氷河後退に伴う高速地殻隆起の総合測地観測－長期的重力変化－

    三浦哲, 佐藤忠弘, 藤本博己, 孫文科, 菅野貴之, M. Kaufman, J. Freymuller

    日本測地学会第108回講演会　2007/11

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    会場：ホテル浦島

  51. アラスカ州南東部における氷河後退に伴う高速地殻隆起の総合測地観測－長期的重力変化－

    三浦哲, 佐藤忠弘, 藤本博己, 孫文科, 菅野貴之, A. Kaufman, J. Freymueller

    日本地震学会2007年秋季大会　2007/10

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    仙台国際センター

  52. Rapid uplifting and gravity change caused by glacial isostatic adjustment in southeastern Alaska International-presentation

    Miura, S, T. Sato, J. T. Freymuller, M. Kaufman, W. Sun, T. Sugano, H. Fujimoto

    EASTEC symposium 2007 Dynamic Earth -its origin and future-　2007/09

  53. Geodetic measurements for monitoring rapid crustal uplift in southeast Alaska caused by post-glacial rebound - Outline of the project - International-presentation

    Miura, S, T. Sato, Jeff T. Freymueller

    7th International Conference on Global Change: Connection to the Arctic (GCCA-7)　2007/02/19

  54. ISEA (International geodetic project in SouthEastern Alaska) for rapid uplifting caused by glacial retreat: (1) Outline of the project International-presentation

    T. Sato, H. Fujimoto, W. Sun, J.T. Freymueller, A. M. Kaufman, R. Cross

    AGU 2006 Fall Meeting　2006/12

  55. Seismic structure at the junction between Izu-Bonin and Mariana Arcs and its implication for arc rifting International-presentation

    S. Kodaira, N. Takahashi, G. Fujie, T. Sato, M. Yamashita, Y. Kaiho, T. No, K. Takizawa, Y. Kaneda

    AGU 2006 Fall Meeting　2006/12

  56. アラスカ州南東部における氷河後退に伴う高速地殻隆起の総合測地観測－プロジェクトの概要とGPS観測－

    佐藤忠弘, 孫文科, 藤本博己

    日本地震学会2006年秋季大会　2006/10/31

  57. アラスカ州南東部における氷河後退に伴う高速地殻隆起の総合測地観測－プロジェクトの

    三浦 哲, 佐藤忠弘, 藤本博己, 孫 文科, Freymueller, Jeff, Kaufman, Alexande, Cross, Rya

    日本測地学会第106回講演会　2006/10/18

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    1: 東北大・院理，2: 国立天文台，3: 東大地震研，4: アラスカ大学フェアバンクス 校

  58. 宮城県沖地震のアスペリティのモニタリング

    EARSシンポジウム　2006/10

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    於：東京大学地震研究所

  59. GPSデータにより推定された宮城県沖プレート境界の非地震性すべり―2002年11月3日M6.3・2005年8月16日M7.2後の余効変動―

    三浦哲, 油井智史, 伊藤浩司, 長谷川昭, 佐藤俊也, 立花憲司

    日本地球惑星科学連合2006年大会　2006/05

  60. GPSデータから推定された2005年宮城県沖地震(M7.2)の地震時すべりと余効すべり

    2005年8月16日に発生した宮城県沖の地震に関する調査研究成果報告会　2006/03/30

  61. GPSによるプレート境界のすべり収支のモニタリング

    油井智史, 長谷川 昭

    研究集会「地殻活動データに基づく予測シミュレーションモデル構築に向けて」　2005/11

  62. 米国アラスカ州南部における後氷期地殻隆起の総合測地観測

    三浦哲, 藤本博己, 笠原 稔, 高橋浩晃, 宮城洋介, 佐藤忠弘, 孫文科, 奥野淳一, 菅野貴之

    平成17年度東京大学地震研究所共同利用研究集会　2005/11

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    平成17年度東京大学地震研究所共同利用研究集会「日本版」衛星重力ミッションの実現を目指して」

  63. ＧＰＳによって観測された2005年8月16日宮城県沖地震（Ｍ7.2）前後の地殻変動

    油井智史, 長谷川昭, 八木勇治

    日本地震学会2005年秋期大会　2005/10

  64. 2005年8月16日宮城県沖地震（Ｍ7.2）に伴った地殻変動

    油井智史, 長谷川昭, 佐藤俊也, 立花憲司

    日本地震学会2005年秋季大会　2005/10

  65. ＰＣを用いた低速サンプリングデータ伝送システムの開発

    小澤哲也, 立花憲司, 佐藤俊也

    日本地震学会2005年秋季大会　2005/10

  66. Geodetic estimation of slip deficits, co- and post-seismic slips on the plate boundary around northeastern Japan arc International-presentation

    21COE International Symposium 2005 Spatial and Temporal Fluctuations in the Solid Earth - Clues to the Future of Our Planet -　2005/07

  67. Spatio-temporal evolution of postseismic following the 2003 Tokachi-oki earthquake (M8.0) estimated by GPS and repeating earthquales International-presentation

    S. Yui, N. Uchida, A. Hasegawa, Y. Yagi

    AOGS 2005　2005/06

  68. Slow slip events around the source area presumed for the forthcoming M7.5 Miyagi-oki earthquake revealed by geodetic and seismological observations International-presentation

    N. Uchida, A. Hasegawa, T. Sato, K. Tachibana, Y. Suwa

    2004 WPGM　2004/08

  69. ＧＰＳによって観測された2003年10月31日福島県沖地震（Ｍ6.8）に伴った地震時・地震後地殻変動

    諏訪謡子, 佐藤俊也, 立花憲司, 油井智史, 長谷川昭

    地球惑星科学関連学会2004年合同大会　2004/05

  70. Slow slip events along the Japan Trench -Geodetic and seismological approach- International-presentation

    Y. Suwa, N. Uchida, A. Hasegawa

    International symposium on slow slip events at plate subduction zones　2004/03

  71. Strain distribution in the NE Japan arc as derived by GPS observations- Strain concentration zone along the volcanic front- International-presentation

    Y. Suwa, T. Sato, K. Tachibana, A. Hasegawa

    The Second International Symposium on Slip and Flow Processes in and below the Seismogenic Region　2004/03

  72. 測地学的データに基づいて推定された2003年宮城県北部地震の断層モデル

    諏訪謡子, 佐藤俊也, 立花憲司, 長谷川昭

    平成15年度東北地区自然災害科学研究集会　2003/12

  73. 宮城県・福島県沖の最近の地震活動・地殻変動と非地震性すべり

    諏訪謡子, 長谷川昭, 佐藤俊也, 立花憲司

    京都大学防災研究所研究集会　2003/12

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    京都大学防災研究所研究集会「長周期イベントの理解へ向けての現状と今後」

  74. 東北日本の歪集中帯

    佐藤俊也, 諏訪謡子, 長谷川昭

    京都大学防災研究所研究集会　2003/11

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    京都大学防災研究所研究集会「地殻のレオロジーと地震発生の関係‐歪集中と深部低周波微動のメカニズム‐」

  75. 宮城県沖とその周辺における最近の地震活動と地殻変動

    諏訪謡子, 佐藤俊也, 立花憲司, 長谷川昭

    日本地震学会2003年秋季大会　2003/10

  76. Evaluation of accuracy in kinematic GPS analyses for seafloor geodesy International-presentation

    A. Sweeney, H. Fujimoto, H. Osaki, E. Kawai, R. Ichikawa, T. Kondo, Y. Osada, C. D. Chadwell

    IUGG2003　2003/07

  77. ＧＰＳ・地殻変動連続観測によって捉えられた宮城県沖・福島県沖プレート境界のスロースリップイベント

    諏訪 謡子, 佐藤 俊也, 立花 憲司, 長谷川 昭

    地球惑星科学関連学会2003年合同大会　2003/05

  78. Evaluation of Accuracy in Kinematic GPS Analyses Using a Precision Roving Antenna Platform International-presentation

    A. Sweeney, H. Fujimoto, H. Osaki, E. Kawai, R. Ichikawa, T. Kondo, C.D.Chadwell

    AGU 2002 Fall meeting　2002/12

  79. 高精度アンテナ可動台によるキネマティックGPS精度検証実験 －通総研鹿島34mアンテナを利用した結果－

    アーロン スィーニー, 藤本 博巳, 大崎 裕生, 川合 栄治, 市川 隆一, 近藤 哲朗

    日本地震学会2002年度秋季大会　2002/11

  80. 通総研鹿島34mアンテナによるキネマティックGPS精度検証実験

    アーロン スィーニー, 藤本 博巳, 大崎 裕生, 川合 栄治, 市川 隆一, 近藤 哲朗

    測地学会第98回講演会　2002/10

  81. 海底地殻変動観測のためのキネマティックＧＰＳ解析の精度評価と誤差要因

    長田 幸仁, Aaron Sweeney, 藤本 博巳

    地球惑星科学関連学会2002年合同大会　2002/05

  82. Aseismic Slip Event with Mw6.6 Accompanying 2001 M5.8 Earthquake off Fukushima, NE Japan, International-presentation

    Y.Suwa, A.Hasegawa

    AGU 2001 Fall meeting　2001/12

  83. Crustal Deformation Observed by a Dense GPS Network around On Backbone Range, northeastern Japan International-presentation

    T.Sato, K.Tachibana, Y.Satake, A.Hasegawa

    International Symposium on slip and flow processes in and below the seismogenic region　2001/11

  84. 海底地殻変動観測システム －kinematic GPS解析による船位測定の精度評価（2）－

    藤本博巳, 村上栄寿, 長田幸仁, C.D.Chadwel

    地震学会2001年度秋季大会　2001/10

  85. 海底地殻変動観測システム －kinematic GPS解析による船位測定の精度評価（2）－

    藤本博巳, 村上栄寿, 長田幸仁, C.D.Chadwel

    測地学会第96回講演会　2001/10

  86. 海底地殻変動観測システム －kinematic GPS解析による船位測定の精度評価－

    藤本博巳, 日野亮太, 佐竹義美, 西野実, 桑野亜佐子, 伊藤亜妃, 長田幸仁, 金沢敏彦, 小泉金一郎

    地球惑星科学関連学会2001年合同大会　2001/06

  87. ハワイ島沖でのＧＰＳ/音響測位観測

    長田幸仁, 藤本博巳, 三浦哲, 金沢敏彦, J. H. Hildebrand, C.D.Chadwell

    地球惑星科学関連学会2001年合同大会　2001/06

  88. 東北奥羽脊梁山地稠密GPS観測網により観測された地殻変動

    佐藤俊也, 三浦哲, 立花憲司, 佐竹義美, 長谷川昭

    地球惑星科学関連学会2001年合同大会　2001/06

  89. GPS稠密連続観測から得られた東北地方南部の地殻変動

    西村卓也, 鷺谷威, 宮崎真一, 多田堯, 三浦哲

    地球惑星科学関連学会2001年合同大会　2001/06

  90. 高速サンプリングＧＰＳ観測システム

    佐藤俊也, 立花憲司

    日本地震学会2000年度秋季大会　2000/11/20

  91. 海底地殻変動観測システム －kinematic GPSによる船位測定の精度評価－

    藤本博巳, 日野亮太, 村上栄寿, 佐竹義美, 西野実, 桑野亜佐子, 伊藤亜妃, 長田幸仁, 金沢敏彦, 小泉金一郎, C.D.Chadwel

    日本地震学会2000年度秋季大会　2000/11/20

  92. Crustal deformation associated with the 1998 seismo-volcanic crisis of Iwate volcano, northeastern Japan, as observed by a dense GPS network International-presentation

    S.Ueki, T.Sato, K.Tachibana, H.Hamaguchi

    International Workshop Global Change : Connection to the Arctic　2000/08/23

  93. ＧＰＳ観測により得られた1998年岩手県内陸北部の地震（Ｍ6.1）の断層モデル

    平澤朋郎, 植木貞人, 佐藤俊也, 立花憲司, 西村卓也

    地球惑星科学関連学会2000年合同大会　2000/06/25

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Research Projects 20

  1. Resolution of crustal deformation of the Japan Islands in various spatio-temporal scales

    Sagiya Takeshi, Sueoka Shigeru, Miyakawa Ayumu, Yoshida Takeyoshi, Ichihara Mie, Aizawa Koki

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)

    Institution: Nagoya University

    2014/07/10 - 2019/03/31

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    We investigate crustal deformation in the Japan Islands combining geodetic, seismological, and geological approaches in order to understand the deformation processes in various spatio-temporal scales in a comprehensive manner. We find that long-lasting inelastic deformation is going on almost universally associated with active faults, playing an essential role in generation of inland earthquakes and geomorphic features. For a long time, geological and geodetic observations have been considered contradictory each other. But we have proven that these data can be integrated for better understanding of the whole deformation process of the Japan Islands.

  2. Study on viscoelastic structure and monitoring of global change by observation of uplifting and gravity in Alaska, US

    Miura Satoshi, SATO TADAHIRO, FUJIMOTO HIROMI, OHTA YUSAKU, MOTOYUKI SATO, TAKAHASHI HIROAKI, OKUBO SHUHEI, KAZAMA TAKAHITO, Jeff Freymueller, Chris Larsen, Max Kaufman

    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)

    2011/04/01 - 2016/03/31

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    In order to study crustal uplifting and gravity change in southeastern Alaska, United States, we carried out continuous GPS and gravity measurements together with absolute gravity survey three times in the area. From the continuous GPS measurements, the maximum uplifting rate of 3 cm/year, which is consistent with the previous study, was derived. Since the continuous gravity measurements by a superconducting gravimeter demonstrated very small, almost no instrumental drift rate, we may be able to use the gravimeter complementing the absolute gravity survey. Gravity change rates obtained by the survey show -1 to -3 micro-gal/year, which is about a half of those for the period from 2006 to 2008. This discrepancy can be attributed to the effects of underground water and/or loading of precipitation.

  3. Study on 2008 Iwate-Miyagi Inland Earthquake (M7.2)

    UMINO Norihito, HIRATA Naoshi, KOSUGA Masahiro, MATSUSHIMA Takeshi, IIO Yoshihisa, SAGIYA Takeshi, KASAHARA Minoru, MARUI Hideaki, TANAKA Atsushi, OKADA Tomomi, ASANO Youichi, IMAIZUMI Toshifumi, MIURA Satoshi, MOTOSAKA Masato, KOKETSU Kazuki, FUKUOKA Hiroshi, ATSUMI Tomohide, OYANE Jun, YOSHII Hiroaki

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Institution: Tohoku University

    2008 - 2008

  4. Integrated Research for 2007 Niigata-Ken Chuetsu-Oki Earthquake

    IWASAKI Takaya, KANAZAWA Toshihiko, MATSUZAWA Toru, MIURA Satoshi, KABEYASAWA Toshimi, TADANO Yuichi

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Institution: The University of Tokyo

    2007 - 2008

  5. Basic study for prediction of large earthquakes off Miyagi Prefecture by monitoring deep groundwater fluctuations

    OTSUKI Kenshiro, FUJIMAKI Hirokazu, NAKAMURA Norihiro, MTSUZAWA Toru, MIURA Satoshi

    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

    2006 - 2008

  6. Study on viscoelastic structure beneath Southeastern Alaska, United States through geodetic observation of crustal uplift Caused by deglaciation Competitive

    MIURA Satoshi, SATO Tadahiro, FUJIMOTO Hiromi, OHTA Yusaku, KASAHARA Minoru, TAKAHASHI Hiroaki, SON Bunka, SUGANO Takayuki, OKUNO Junichi, INAZU Daisuke

    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

    2005 - 2008

  7. Mapping of asperities and estimation of spatiotemporal distribution of interplate slip

    HASEGAWA Akira, UMINO Norihito, MATSUZAWA Toru, MIURA Satoshi, OKADA Tomomi, YABE Yasuo

    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

    2003 - 2006

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    In this research, we have been aiming to analyze details of lock and slip on the plate boundary under the Pacific Ocean in NE Japan and to understand the generation mechanism of interplate earthquakes. The main research contents are: 1. analysis of repeating earthquakes, 2. analysis of source process of medium ＆ large earthquakes based on broadband seismic waveform data, 3. GPS data analysis, 4. research on the property of asperities by using numerical simulation. According to the result of 1. analysis of repeating earthquakes, we successfully estimated the time variation of interplate slips around the rupture zone of the 2003 Tokachi-oki earthquake, by identifying the repeating earthquakes in all parts of the plate boundary under the Pacific Ocean from Hokkaido to NE Japan. As for the 2. analysis of source process based on seismic waveform data, we showed that the rupture area of Miyagi-oki earthquake (M7.2) on Aug. 16, 2005 is overlapped with the southeastern part of the rupture area of the 1978 Miyagi-oki earthquake. So, this means that the asperities of the 1978 earthquake located in the north and west part are left unruptured; our research pointed out the importance of continued and careful observation on this area. Moreover, we conducted reanalysis of aftershocks of Miyagi-oki earthquakes with magnitude >7 in 1930s, and found out that three asperities could have slipped separately, in three times, in the case of 1930s' Miyagi-oki earthquakes. With 3. GPS analysis, after 2005 Miyagi-oki earthquake, we detected the after slip which spread toward south of the rupture area of the event. This observation result corresponds with the result of seismic-waveform inversion analysis; the northern and western asperities are left unruptured. The result of 4. numerical simulation analysis shows that, in order to explain the propagation velocity of the after slip observed in the deep plate boundary close to land, pore pressure around the plate boundary should be extremely large. On the other hand, in order to explain the propagation velocity of the after slip observed in the shallow plate boundary close to the trench, large pore pressure is not necessary like in the case above. These results suggest the depth variation in the amount of water supplied to the plate boundary, which was caused by dehydration reaction, or the depth variation in coefficient of permeability around the plate boundary. As mentioned above, through this research, we have achieved substantial results to enhance understanding of the generation mechanism of interplate earthquakes.

  8. 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.

  9. Studies of seafloor geodetic measurements on observation platforms adapted for sediments

    FUJIMOTO Hiromi, KANAZAWA Toshihiko, NISHINO Minoru, MIURA Satoshi, MOCHIZUKI Kimihiro, KOIZUMI Kin-ichiro

    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

    2000 - 2002

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    Subduction zones around Japan are covered with sediments, where precise geodetic measurements for observation of seafloor crustal movements can be difficult. This study aims at examining the stability of seafloor geodetic measurements on the sediments: tilt measurements on a platform with pipes installed in sefloor sediments, precise point positioning and observation of ocean bottom pressure variations with self-landing instruments We have developed two sets of ocean bottom tiltmeter system for deployment by a remotely operated vehicle. The tiltmeter was divided into two parts for operation on the seafloor. A procedure for automatic leveling of the gimbals was improved to reduce consumption of the batteries We have confirmed resolution and stability of qaurtz pressure sensor through analysis of ocean bottom pressure data observed by three sensors over a spreading axis of the southern Pacific Rise for 14 manths in 1997-98. All of the sensors recorded pressure increase following the demise of the big 1997-98 El Nino event. The pressure variation suggests an ocean dynamics which can explain an abrupt change of J2 term of the Earth's gravity field. The results also suggest depression of the seafloor near the spreading center In July 2002 we could visually observe how a seafloor instrument for point positioning was deployed on the seafloor covered with thick sedimentary layer. The base of the instrument, 1m square of FRP mesh, looked quite stable and sunk only 1cm or less after deployment of 1year. We could confirm that we can carry out precise pressure monitoring and point positioning on thick sediments by using such a base

  10. オホーツクプレート運動の地球物理学的検証とそのテクトニクスの研究

    笠原 稔, 勝俣 啓, 宮町 宏樹, 三浦 哲, 木俣 文昭, 瀬野 徹三, IVASHCHENKO エイ・アイ, BAHTIAROV V., LEVIN V.E., MAGUSKIN M.A, GORDEEV E.I.

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業 国際学術研究

    Category: 国際学術研究

    Institution: 北海道大学

    1996 - 1998

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    オホーツクプレート運動の検証のために、平成8年度から10年度まで、カムチャカ・サハリン・ハバロフスクにGPS観測点を順次設置し,それらの観測点において可能な限りの連続観測を継続した.それによると、まづ、オホーツクプレートの東側にアムールプレートの存在が明らかになり,アムールとオホーツクのプレート収束速度が従来考えられていたよりも数倍大きい約2cm/yであることを明らかにした.本研究から得られたサハリンの速度ベクトルデータから,サハリン南部ではモネロン島西方を通ると考えられていたアムールプレートの東の境界が、サハリン中軸部よりも東に存在し,サハリン南部から北海道北部にかけての陸域がアムールプレートとオホーツクプレートの衝突境界になっていることが明らかになった. 北サハリン地震震源域で各年において臨時地震観測を継続し、余震活動と地震断層の変位分布との関係を解析した結果,大きい変位を生じた場所のb-値は小さく、より大きな応力降下を示す場であったこと,地震断層の西側は、b-値は大きく破砕度のおおきい場が誘発的な地震活動を発生させたことが明らかになった. 南サハリンでの、1995年から毎年夏期の臨時地震観測によると、ユジノサハリンスクのすぐ西側に、活動的な地震帯が南北に連なっており、これは、北海道北部の地震活動帯の延長のように見え,これらの活動帯がオホーツクとアムールプレートの境界である可能性は高い. カムチャッカ半島内のGPS観測網は、1996・1997年に設置されたが,カムチャッカ半島中部での地震観測を含めて,この地域の、長期的・広域的な変動とプレート境界を明らかにするには期間が短く十分な結果は得られなかったが、データ蓄積・解析中であり,それにより,オホーツクプレートの運動が決定しつつある.

  11. Comparative study on crustal earthquakes along active faults

    HASEGAWA Akira, MATSUMOTO Satoshi, MIURA Satoshi, HORIUCHI Shigeki, ZHENG Shihua, CHEN Tianchang

    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: Tohoku University

    1996 - 1997

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    Ningxia Hui Autonomous Region is located in the junction zone of Tibet block, North China block and Ordos block. Two GPS campaigns were operated at five newly constructed stations in 1997, which have revealed that Tibet block was moved toward northeast with a rate of about 3cm per year due to the collision between the Indian and Eurasian plates. In 1997, a PC-based data acquisition system for seismographs was installed at the Seismological Bureau of Ningxia Hui Autonomous Region, Yinchuan, China by Tohoku University, which has enabled to locate hypocenters accurately and to record digital wave form data. Preliminaly investigations of waveforms show the existence of some distinctive later phases, which are thought to be reflectors in the crust. The quality of waveform data is so high that it may be possible to be used for future researches of source process of earthquakes, seismic tomography, and so on.

  12. Study on Lembang and Cimandiri Faults in West Java

    TANAKA Torao, SUPARKA S, KAHAR Joenil, NAKAURA Kajuro, OKUBO Shuhei, ANDO Masataka

    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: KYOTO UNIVESITY

    1996 - 1997

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    Gravity survey was carried out crossing the Lembang and Cimandiri Faults. Gravity measurements were made with 500n intervals, and GPS observations were also made for precise positioning. A preliminary analysis shows that there is a density contrast between both sides of the faults and that the existence of a layer which tilts to north is expected. A Reconnaissance seismic observation near the Lembang fault was carried out for about 10 days in October 1997. Two seismographs were set near the Lembang fault. The seismograph consists of three component seismometers with a natural frequency of 2Hz, a digital recorder and a GPS receiver for timing. The recorder has an amplifier, a 16 bit AD-converter and DAT recording system. Some small earthquakes were observed during the observation period. According to reports of the volcanic activity, seismic swarms sometimes occur near active volcanoes. Therefore, seismic activity for small earthquake is not so low near the volcanoes, but not so high near the Lembang fault. GPS network extended in 1996 was repeatedly observed with Ashtech Z12 and Leica System 300 receivers. The network consists of 7 stations. The size of the network is about 10km and the prcision of positioning is a few mm in rms in average. From repeated GPS measurements a deformation which seems to indicate the buldge of the body of Guntur volcano was detected. Though the deformation is small compared with the positioning precision, it is in agreement with the result from leveling survey at the southeastern foot of the volcaco. In December 1997 an international symposium was held in Kyoto and investigators of this project participated in the symposium and special meeting in order to discuss the results of this program about the tectonics and structure of Lembang and Cimandiri faults.

  13. Unifying analysis of continyous crustal deformation data in Japan searching for Slow and Silent Earthquakes

    KASAHARA Minoru, SHIGETOMI Kunihiro, TAKEMOTO Shuzou, NAKAO Shigeru, ISHI Hiroshi, MIURA Satoshi

    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: HOKKAIDO UNIVERSITY

    1995 - 1996

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    In fiscal year of 1995, at meeting in Shizuoka and Kyoto, we have held a consultation to unify the data format (the period 1991-1995) and analysis method. Following a consultation, we have unified the data format and calculated trend-terms of the crustal deformation data by using Tidal analysis program, BAYTAP-G.At meeting in Mizusawa, we havemade first reporte of studying. In fiscal year of 1996, following the previous fiscal, we have analyzed of the crustal deformation data. At meetingin Kochi, we have made a second report, and then at meeting in Sapporo, we have made final report that (1) The 1994 Off Sanriku Earthquake, after seismic shock, a remarkably postseismic strain change of about 10^<-8> order with the time constant of from about one to three days were recorded in the trend term of record at Erimo, Miyako and Esashi etc.atthe same time. That were similar change recorded at Esashi and Miyako's extensometer of The 1992 Off Sanriku Earthquake (2) The 1995 Hyogoken-nanbu Earthquake, from about harf a year before, the changes of trend-term were recorded at Yamasaki, Abuyama, Amagase and Osakayama at the same time.

  14. TSUNAMI GENERATION WITHOUT SHAKING DUE TO EARTHQUAKES.

    SHUTO Nobuo, MIURA Satoshi, IMAMURA Fumihiko

    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

    1993 - 1994

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    A tsunami is ususlly considered to be generated by an earthquake. Once fault parameters are given, the initial tsunami profile is calculated with the elastic theory. It is assumed that the vertical displacement of sea bottom is closely related to the fault movement. However, this assumption is not always true. 1) In case of the 1983 Nihonkai-Chubu earthquake composed of two faults, a secondary fault in the north fault and a non-seismic movement are necessary in order to explain earlier arrival of the actual tsunami than the computed tsunami for the major fault movement determined by seismic data. 2) In case of the 1992 Nicaraguan tsunami, in spite of a large tsunami, the earthquake was very weak, as 2 in the JMA intensity scale. Whether this tsunami was generated by the earthquake or by other mechanism was examined. It is concluded that this earthquake was a tsunami earthquake. 3) In case of the 1993 Hokkaido Nansei-oki earthquake, the first tsunami arrived at the western coast of Hokkaido 5 minutes faster than that generated at the place of the fault estimated from seismic data. This strongly suggests that other tsunami generation mechanism than the earthquake should be found in the area between the fault and the coast. 4)The 1883 Krakatau tsunami which was not generated by an earthquake but by a caldera formation was numerically simulated. A method is developed to stably simulate a sudden fall of water at the initial profile.

  15. Geophysical Study on Hotspot Volcanisim in African Continent

    HAMAGUCHI Hiroyuki, KASEREKA M., SASSA M., AKUMBI M., MAVONGA T., WAFULA M., ZANA N., NISHIMURA T., KASAHARA M., MORITA Y., ISHII H.

    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: Faculty of Science, Tohoku University

    1992 - 1994

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    (1) We analyzed SmKS and PKP waves recorded by the GDSN in order to survey the lateral heterogeneity in the lower mantle and at the top of the Earth's core. The spherical harmonic analysis revealed that the hemishperical (degree 1) pattern in the heterogeneities predominants at the top of the Earth's outer core and inner core beneath the African continent. (2) We developed the small and low-power data logger with the precise GPS clock. This equipments were applied successfully to the field observations in the volcanic regions in Africa. (3) The Nyiragongo volcano in eastern Zaire presents the highest potential threat to human lives in Goma region, partly because of the abnormal increasing population fleeing from Rwanda and partly because of the lack of mitigation plan by the local government. (4) The recent volcano-magmatic activity of Nyiragongo and Nyamuragira are summarized as follows ; (a) After the initial episode of eruption in the lava-lake, we observed at least 37 eruptive episodes in the period from June, 1994 to February, 1995. The most significant features in the episodic pattern are not only the intermittent appearance of active periods but also the change of their tempo that happened at the middle of December, 1994. Since January, 1995, the intermittency has declined and continuous features of tremors with small amplitudes became predominant, which suggests that dike-like ocnduit changed to the open conduit system. (b) The seismic activity shows rather concentrated features at the depth of about 15 km just beneath the Nyiragongo carter. The earthquakes with very shallow focal depths were not located closely to the Nyiragongo crater. (c) The pattern of continuously recorded tilt vector indicates that Nyiragongo has slowly inflated since the beginning of eruption. This inflation was probably caused by the storage of excess magma in the very shallow reservoir or in the lava lake.

  16. An experimental study on the stress field in rocks uniformed under in situ stresses

    YAMAMOTO Kiyohiko, KATO Naoyuki, MIURA Satoshi, HIRASAWA Tomowo

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for General Scientific Research (C)

    Category: Grant-in-Aid for General Scientific Research (C)

    Institution: TOHOKU UNIVERSITY

    1992 - 1993

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    Inelastic deformation of rocks under uniaxial loading of compresion reflects the stresses that have been previously applied to the rocks. This effects of the previous stresses on the inelastic strain is called the rock property of stress memory. The absolute values of in situ stresses are suggested to be estimated from boring core samples by the method of deformation rate analysis(DRA) which has been developed on the basis of the property of the stress memory. We call the memory of the absolute values of in situ stress as in situ stress memory. In situ stress memory is however an unexpected property from the established knowledge on the deformation of rocks. We carried out this study for the purposes as follows ; 1) to confirm that the stresses estimated from core samples by DRA are regarded as the in situ stresses at the places where the samples were retrieved, 2) to propose a hypothesis for the explanation of in situ stress memory and 3) to prove the validity of the hypothesis. We compared the vertical stresses estimated by DRA on boring core samples up to 842 m depth with the calculated overburden pressures. a) We confirmed by the comparisom that rocks have in situ stress memory. b) We proposed the hypothesis that stress field in rocks has been uniformed at the in situ stresses which are almost constant for a long time and theoretically proved that the in situ stress memory is explianed by the hypothesis. The hypothesis predicts that the compliance of rock specimens decreases to the minimum at an applied stress nearly equal to the constant stress that has been being applied to the specimen for a long time. c) We experimentally found the decrease in the compliance for the rock specimens which have been subjected to a constant stress for a time more than 3 days.

  17. Slip Nucleation Process and Possibility of Aseismic Slip

    HIRASAWA Tomowo, KUSUNOSE Kinichiro, KATO Naoyuki, YAMAMOTO Kiyohiko, MIURA Satoshi, MISHINA Masaaki

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for General Scientific Research (A)

    Category: Grant-in-Aid for General Scientific Research (A)

    Institution: TOHOKU UNIVERSITY

    1991 - 1993

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    Along the northeastern Japan arc the Pacific plate is subducting beneath the continental plate on which the Japan islands lie. The subduction motion is not uniform either in space or in time. At shallow depths of the boundary between the two plates large earthquakes occasionally take place to produce almost instantaneously a significant amount of slip motion. At large depths, say deeper than 100 km, stable sliding seems to occur at the plate boundary. It may be reasonable to expect that aseismic but episodic slip occurs intermittently at intermediate depths. The present study is thus undertaken to examine the possibility of aseismic slip events propagating at very low speeds in relation to the slip nucleation process. Laboratory experiments were performed on a rock specimen with a pre-existing fault to generate stick-slip events with various propagation velocities. It is found that slip events with anomalously low propagation velocities are easy to occur on a composite fault made from granite and marble. This suggests the possibility of episodic slip events with very low rupture velocities on the inhomogeneous plate boundary. During the slip-weakening process acoustic emissions are found to be generated supposedly by microfractures of asperities on the fault. Their foci are located inside the slip nucleation zone. This implies that microscopically unstable phenomena (microfractures) are involved in a macroscopically stable phenomenon (stable sliding). In 1992 a large shallow earthquake of low-angle thrust fault type with the magunitude of 6.9 took place at the plate boundary in the region off the coast of Sanriku, Honshu, Japan. Following this shock noticeable post-seismic strain changes were recorded by extensometers at two stations, Miyako and Esashi, which are located near the coast of Sanriku. The observed strain changes are well explained by the model in which aseismic slip with a dacay constant of 12 hours is assumed to take place in the hypocentral region of the main shock. The seismic moment of the aseismic slip is found to be nearly the same as that of the main shock.

  18. A Study on the crustal movement around the junction of the Kurile and the Northeastern arc.

    KASAHARA Minoru, OSHIMA Hiromitsu, MIURA Satoshi

    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: HOKKAIDO UNIVERSITY

    1991 - 1993

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    The aim of this project is to reveal the feature of the crustal movement around the junction of the Kurile and the Northeastern arc, and to understand the difference of tectonics between Hokkaido and Northeastern Japan. In order to achieve the purpose, We established a regional GPS observation network for repeated campaign in Hokkaido, and performed the continuous measurements in Tohoku district. The correction of atmospheric path delay is also studied. The regional GPS network of which baseline's length ranges from 100 to 300 km is established in Hokkaido. Some local network for research on prediction of earthquakes and volcanic eruption is also founded. Repeated campaigns of GPS measurements for the regional network are performed, and Short term repeatabilities are obtained less than 0.3ppm. The regional network detected the crustal deformation associated with the 1993 Hokkaido Nansei-Oki earthquake. Continuous measurements with on site recording at 2 new sites installed just after this event reveals post-seismic deformation. The Continuous measurements carried out by using the network established in Tohoku district. It is confirmed that the continuous GPS array allows to detect variation of baseline with high temporary resolution and is effective to obtain the intraplate deformations. A new correction method of atmospheric path delay based on the numerical weather prediction data have been developed. This study reveals that the data set of perceptible water vapor and temperature obtained by the GPS networks are useful to improve the accuracy of numerical prediction model. A new system combined the numerical prediction with the GPS meteorology through the estimation of atmospheric path delay.

  19. 沈み込み帯における地震性地殼変動の蓄積過程に関する研究

    三浦 哲

    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

    1991 - 1991

  20. GPS観測データによる沈み込み帯の地殼変動に関する研究

    三浦 哲

    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

    1989 - 1989

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Works 2

  1. LPAS (a software to log and transfer Long period data)

    2005/10 -

    Type: Software

  2. com2rnx (a software to log GPS data)

    2001/05 -

    Type: Software

Social Activities 27

  1. 北茨城市民大学

    2014/06/28 - 2014/07/12

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    講義

  2. 市民のためのサイエンス講座２０１６

    2016/09/01 -

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    東北大学と読売新聞社の共同主催による、市民のためのサイエンス講座「火山噴火の謎に迫る～巨大地震と東北の噴火予知～」が、９月１日午後、東北大学文化科系総合講義棟にて２５０名の参加者のもと、盛況に行われました。講演は、東北大学理学研究科の西村太志教授、三浦哲教授、早坂忠裕教授の3先生により行われました。また、国内の火山活動を紹介する企画展「日本の火山噴火と火山災害」も併せて開催されました。

  3. 災害研金曜フォーラム

    2015/10/30 -

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    「東北地方の火山活動」

  4. 平成27年度高等学校理科実験研修会

    2015/10/30 -

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    「火山活動と噴火予知」

  5. 第３６回日本熱物性シンポジウム

    2015/10/20 -

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    「火山活動と噴火予知」

  6. 第2回「巨大地震と火山活動」研究会

    2015/10/10 -

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    「蔵王山・吾妻山の火山性地殻変動」

  7. 仙台市医師会勤務医ブロック総会・講演会

    2015/08/28 -

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    「蔵王山・吾妻山の最近の火山活動について」

  8. 第54 回日本地すベり学会山形大会県民講演会

    2015/08/25 -

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    「東北地方の活火山と蔵王山の活動について」

  9. 平成２７年度宮城県議会・山形県議会交流議員連盟総会

    2015/08/12 -

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    「火山観測の現状と噴火予知 ー噴火の前に何が起こるか？ー」

  10. 仙台ライフライン防災情報ネットワーク第2回幹事会（勉強会）

    2015/07/23 -

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    「火山噴火の前に何が起こるか？」

  11. ライオンズタワー仙台広瀬自治会文化講演会

    2015/06/27 -

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    「蔵王山の最近の火山活動について」

  12. 山形商工会議所青年部2月例会一般公開

    2015/02/12 -

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    講演「蔵王山における火山活動活発化について」

  13. 仙台市生出地区災害対応公開講座

    2014/11/29 -

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    講演「蔵王山における火山活動活発化について」

  14. 公益財団法人総合工学振興財団主催シンポジウム「理系の魅力発信フォーラム」

    2014/11/11 -

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    パネリスト

  15. 秋田県立横手高等学校

    2014/09/03 -

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    模擬講義

  16. 日本技術士会東北本部研修会

    2014/04/23 -

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    記念講演

  17. 秋田県教育委員会との連携に基づく出前授業

    2013/11/12 -

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    秋田県立花輪高等学校にて出前授業を実施

  18. 「青雲の志」講演会

    2013/09/18 -

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    秋田県立横手高等学校の卒業生として，将来を担う人材育成の観点から、その自覚と責任をもった「青雲の志」を育むことをテーマとした講演を実施

  19. 「蔵王山の火山防災に関する勉強会」への講師派遣

    2013/08/09 -

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    仙台管区気象台では，蔵王山の火山防災知識の普及・啓発活動の一環として、地元防災関係機関等を対象とした勉強会を開催することになり，そこで最近の蔵王山周辺の地震・火山活動等について講演を実施

  20. 不明の車 探査開始 内陸地震で東北大チーム

    2009/08/07 -

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    地雷探査で実績のある東北大東北アジア研究センターの佐藤源之教授（電波応用工学）の研究グループは６日、独自の金属探知システムを使い、岩手・宮城内陸地震で行方不明になった山形県金山町の農業高橋伸好さん＝不明当時（５６）＝と妻美也子さん＝同（５０）＝が乗っていた軽トラックの探査を始めた。初日はそれらしき反応はなかった。３、４日程度行う予定。 栗原市との共同調査で、不発弾を見つける金属探知機に高性能ＧＰＳを付け、金属物の位置を特定する。誤差１０センチ以内の精度があり、深さ約３メートルまでの探査が可能。ＧＰＳに詳しい東北大地震・噴火予知研究観測センターの三浦哲准教授も協力している。

  21. Glacier Bay Park Service

    2007/06 -

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    Does Deglaciation Slow the Acceleration of a Falling Apple? - An Overview of Recent Isostatic Rebound Research.

  22. 第3回JGNIIワークショップ：地域ICTネットワークとその運用・管理

    2006/05/18 -

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    『東北大学における地震・火山観測ネットワーク』

  23. 広帯域ネットワーク利用に関するワークショップ

    2006/01/17 -

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    『地震学・測地学におけるネットワーク利用について』

  24. 山元町坂元中学校

    2004/07 -

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    講演

  25. 2003年宮城県北部地震シンポジウム 地震から6ヶ月－震源域の地盤調査・地震災害調査で何が解明されたか

    2004/01 -

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    講演

  26. 日本学術会議測地学研究連絡委員会

    2002/12 -

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    講演

  27. 釜石市地震研究公開セミナー講演

    2001/02/02 -

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    講演

Show all Show first 5

Media Coverage 3

  1. 大地震に備える〜地震探求・宮城県沖地震を考える

    仙台放送

    2008/04

    Type: Other

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    仙台放送製作によるWebページに12回にわたって「宇宙から大地の動きをはかる」と題して一般向けの解説をおこなった．

  2. 2005年8月16日の宮城県沖地震(M7.2)以後の地殻変動の観測研究

    東北放送

    2006/08/16

    Type: TV or radio program

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    理学研究科附属地震・噴火予知研究観測センターでは、宮城県内を中心として稠密GPS連続観測網を構築し、 2005年8月16日の宮城県沖地震(M7.2)以後の地殻変動の観測研究を行っています。 その結果、同地震後にプレート境界上で年間数10cm程度のゆっくりとした余効すべりが捉えられていることがわかりました。 このような現象を把握することは今後の宮城県沖の地震活動を予測するうえで極めて重要な情報となります。 地震から1年後の8月16日に最近の研究成果などについて放送される予定です。

  3. サイエンスZERO「地震予知最前線 人工衛星で監視せよ」

    NHK

    2003/09/03

    Type: TV or radio program

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    2003年東北地方を大地震が相次いで襲った。続発する地震研究の最前線で、人工衛星による観測技術が注目されている。衛星から地上の場所を図るＧＰＳ技術を用い、地震の前に起こるわずかな地面の動きをとらえて地震を予知しようというのである。地球上空約２万キロを飛んでいるＧＰＳ衛星は、衛星からの電波が地上のアンテナに届くまでの時間から位置を求めることができ、大きなアンテナはミリメートルの精度を持っている。その大きなアンテナは全国におよそ1200カ所設置され、地面の動きを観測しているのである。

Other 3

  1. 東北地方太平洋沖で発生する 地震・津波の調査観測

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    平成23 年3 月11 日に発生した東北地方太平洋沖地震については、M9.0 というこれまでに日本圏内で観測された最大の地震であり、現在でも活発な余震活動や余効変動が継続している。今後も大きな余震やそれに伴う津波が発生する可能性が高いことから、今回の地震の震源域に隣接する領域を含めた広い陸海域での調査観測や研究を行い、今回の地震のような巨大な海溝型地震や津波の発生メカニズム等の解明を図り、防災・減災に資する情報を収集する必要がある。そのため、東北地方太平洋沖地震の震源域およびその周辺域において、地震・津波の調査観測を行い、本海域で今後発生する地震・津波の規模や発生確率等の評価の高度化に資することを目的とする。調査観測の結果から、正確な地殻活動や地殻構造を把握し、また、過去の地震・津波の発生履歴を明らかにする。さらに、それらの成果から、現状評価の高度化、地震・津波発生履歴の高精度化を目指す。そのため、①海底自然地震観測、②地殻構造調査、③海底堆積物調査、④海底地形調査、⑤東北地方太平洋沖で発生する地震・津波の調査観測の管理・運営の計5つのサブテーマを実施する。

  2. GPS/A海底地殻変動観測におけるGPSキネマティック解析の誤差要因の定量的研究

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    GPS/A海底地殻変動観測におけるGPSキネマティック解析の誤差要因の定量的研究

  3. 米国アラスカ州南部における後氷期地殻隆起の総合測地観測と粘弾性構造の推定