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Dapeng Zhao

Section

Graduate School of Science

Job title

Professor

Degree

理学博士（東北大学）
理学修士（東北大学）

researchmap

https://researchmap.jp/read0134549

J-GLOBAL ID

200901027204933484

e-Rad No.

70304665

ORCID

https://orcid.org/0000-0002-4407-594X

Education 4

Tohoku University

1988/04 - 1991/03
Tohoku University　Graduate School, Division of Natural Science　Geophysics (Master course)

1986/04 - 1988/03
北京大学　理学部　地球科学科

1980/09 - 1984/08
Peking University　Faculty of Science　Department of Geoscience

1980/09 - 1984/08

Committee Memberships 5

Surveys in Geophysics誌 (Springer Nature), 副編集長

2024/10 - Present
日本地震学会　代議員

2024/04 - Present
Japan Geoscience Union　Representative

2000/04 - Present
Polar Science誌 (Elsevier社)　副編集長

2006/09 - 2025/06
Journal of Asian Earth Sciences (Elsevier)　Editor

2010/11 - 2019/12

Professional Memberships 5

Japan Geoscience Union

1998/04 - Present
European Geosciences Union
Seismological Society of America
American Geophysical Union
日本地震学会

Research Interests 7

活火山
地震の発生機構
マントルプルーム
ホットスポット
沈み込み帯
地震波トモグラフィー
地球の構造

Research Areas 1

Natural sciences / Solid earth science / Solid-Earth Physics

Awards 9

AGU Fellow

2024/09　American Geophysical Union
JpGU Fellow

2023/04　Japan Geoscience Union
The Seismological Society of Japan Award

2023/03　Seismological Society of Japan
Highly Cited Research 賞

2016/12　Elsevier社
AGU Research Spotlight

2016/08　American Geophysical Union
The most influential researchers from AGU publications

2016/06　American Geophysical Union
Island Arc賞

2014/06　日本地質学会
Elsevier社PEPI 誌 Top-1 Cited 論文

2009/10　Elsevier社
Elsevier社PEPI 誌 Most Cited Paper賞

2008/01　Elsevier

Show all ︎Show 5

Papers 445

Ghost plumes hidden beneath Earth’s continents Peer-reviewed

Simone Pilia, Giampiero Iaffaldano, D. Rhodri Davies, Mohammad Ismaiel, Paolo A. Sossi, Scott Whattam, Dapeng Zhao, Hao Hu

Earth and Planetary Science Letters　666　119467　2025/09
Publisher: Elsevier BV
DOI： 10.1016/j.epsl.2025.119467 　

ISSN： 0012-821X
Updated Pn wave anisotropic tomography and dynamics of the North China Craton Peer-reviewed

Weiwei Yin, Jianshe Lei, Rongyi Qian, Dapeng Zhao

Tectonophysics　913　230878　2025/08
Publisher: Elsevier BV
DOI： 10.1016/j.tecto.2025.230878 　

ISSN： 0040-1951
Seismic tomography of the Pampean flat-slab subduction zone and its implications for volcanism and seismicity in the Central Andes Peer-reviewed

Rui Nie, Xin Liu, Dapeng Zhao

Earth and Planetary Science Letters　669　119575　2025/08

DOI： 10.1016/j.epsl.2025.119575 　
Changbai intraplate volcanism and big mantle wedge Peer-reviewed

Dapeng Zhao, Genti Toyokuni, YoungHee Kim

Physics of the Earth and Planetary Interiors　367　107425　2025/08
Publisher: Elsevier BV
DOI： 10.1016/j.pepi.2025.107425 　

ISSN： 0031-9201
Receiver-function imaging of the Moho discontinuity beneath the Tanlu fault zone and its tectonic implications Peer-reviewed

Tao Zhang, Jianshe Lei, Dapeng Zhao

Geophysical Journal International　243　1-17　2025/08/01
Publisher: Oxford University Press (OUP)
DOI： 10.1093/gji/ggaf298 　

ISSN： 0956-540X

eISSN： 1365-246X

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Summary In this study we obtain 35 903 high-quality P-wave receiver functions from 1737 teleseismic events recorded at 120 dense broadband TanluArray temporary stations deployed in and around the Tanlu fault zone (TLFZ). After station azimuth and sediment correction are made, a detailed Moho depth distribution is obtained by CCP stacking. Our results show a sharp change in the Moho depth across the TLFZ from the west to east, which well corresponds to the surface geological structure. The deepest Moho (38.0 ∼ 40.0 km) occurs beneath the Dabie orogenic belt and the Sulu orogenic belt. The Moho beneath the Luxi uplift, Jiangnan orogenic belt and Jiaodong uplift is deeper (36.0 ∼ 37.0 km), whereas the Subei basin and the southern basin of the South Yellow Sea have a shallow Moho (28.0 ∼ 30.0 km). There is an obvious Moho uplift near Weifang, which corresponds to the Changle ancient volcano on the surface and may be a channel for upwelling of hot mantle material. The Moho is unclear under the fault zone near Tancheng, which is speculated to be a channel for upwelling of hot mantle material. It may be related to upwelling of hot and wet flows in the big mantle wedge above the subducted Pacific slab that is stagnant in the mantle transition zone beneath East Asia, which is a possible cause of the 1668 M8.5 Tancheng earthquake.
Magmatic System of the Hainan Plume Revealed by Ambient Noise Tomography Peer-reviewed

Gong Deng, Jianshe Lei, Dapeng Zhao, Rui Gao

Journal of Geophysical Research: Solid Earth　130　(7)　e2024JB030696　2025/07/09
Publisher: American Geophysical Union (AGU)
DOI： 10.1029/2024jb030696 　

ISSN： 2169-9313

eISSN： 2169-9356

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Abstract The magmatic system of the Hainan plume is important for unraveling the mechanism of intraplate volcanism. We develop a detailed three‐dimensional shear‐wave velocity (Vs) model of the crust and uppermost mantle using ambient noise tomography to investigate the magmatic system of the Hainan plume. Rayleigh wave phase velocity dispersions (5–40 s) are extracted from seismograms recorded at 74 broadband stations, including 32 Chinese provincial network stations and 42 portable stations of the Hainan Active Volcano Experiment of Seismic Array (HAVESArray). The integration of the HAVESArray data substantially improves the spatial resolution of the new Vs model. Our results show that high‐Vs zones mainly exist under southern Hainan Island and northern Leizhou peninsula, whereas low‐Vs zones appear primarily beneath the Beibuwan basin and the Leiqiong volcanic field. Two distinct low‐Vs zones are revealed beneath the Leiqiong volcanic field. The deeper zone exists at depths of 24–40 km and has a Vs reduction of ∼5%, whereas the shallower zone exists at depths of 12–20 km and has a Vs reduction of ∼8%. The two low‐Vs zones are connected vertically. These results suggest that the interconnected deep and shallow magma reservoirs may regulate the magma supply between the volcanic field and the Hainan mantle plume. Furthermore, seismic swarms in the Qiongshan area are predominantly located along the boundaries between high‐Vs and low‐Vs anomalies. We infer that the 1605 M7.5 Qiongshan earthquake was likely caused by the disruption of the overlying brittle crustal seal due to the rapid intrusion of the underlying magmatic fluids.
Pn Velocity Structure and Anisotropy of the Uppermost Mantle Beneath Southeast Asia Peer-reviewed

Yuan Li, Jianshe Lei, Jinli Huang, Dapeng Zhao

Journal of Geophysical Research: Solid Earth　130　(6)　e2025JB031116　2025/06/24
Publisher: American Geophysical Union (AGU)
DOI： 10.1029/2025jb031116 　

ISSN： 2169-9313

eISSN： 2169-9356

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Abstract Systematic investigation of the uppermost mantle structure beneath Southeast Asia is of great significance to understand the dynamics of oceanic plate subductions, continental collisions, and material upwelling associated with a mantle plume. To obtain high‐resolution images of Pn wave velocity structure and anisotropy of the uppermost mantle beneath Southeast Asia, we collect 182,875 high‐quality Pn arrival time data of 8,647 local earthquakes recorded at 860 stations from seismograms of temporary HAVESArray and permanent seismic networks in and around Hainan Island, as well as from the ISC‐EHB Bulletin. Our results generally align with previous findings but provide new insights into the tectonic evolution and dynamics of the Indochina block and the Hainan mantle plume. The Andaman‐Sumatra‐Java‐Timor and Philippine‐Taiwan‐Ryukyu arcs, associated with active volcanoes, exhibit prominent low‐velocity (low‐V) anomalies, whereas trenches and sea basins show higher velocities. Notably, the northwestern part of the Indochina block displays significant low‐V anomalies with an NW‐SE fast propagation direction (FPD), which are divided into two branches with dominant N‐S and NE‐SW FPDs at the northwest margin of the Khorat Plateau. This result suggests that southeastward mantle flow of the Indochina block bifurcates when encountering the Khorat Plateau. In addition, distinct velocity anomalies beneath the South China Sea and the southern Indochina block reflect unique traces of material upwelling from the Hainan mantle plume, contributing to the wide distribution of late Cenozoic basalts in Southeast Asia.
A Narrow Magma Conduit of the Changbaishan Volcano Revealed by high-resolution Receiver Function Imaging Peer-reviewed

Dong Yan, You Tian, Dapeng Zhao

Journal of Geophysical Research: Solid Earth　130　(6)　e2024JB030535　2025/06/20
Publisher: American Geophysical Union (AGU)
DOI： 10.1029/2024jb030535 　

ISSN： 2169-9313

eISSN： 2169-9356

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Abstract The Changbaishan volcano (CBV) is the largest Cenozoic intraplate stratovolcano in Northeast China. Although many seismic imaging studies have been conducted in the CBV area during the past two decades, the detailed crustal structure beneath the Tianchi caldera is still poorly understood due to the sparse seismic observations limited by the harsh natural conditions. In this study, we deployed dense linear seismic arrays along three slopes of the Changbaishan‐Tianchi volcanic area for the first time to obtain unprecedented high‐resolution images of the crustal structure by using the teleseismic receiver‐function imaging technique. Our results reveal detailed variations of crustal interface characteristics beneath the Tianchi caldera and adjacent areas. Several intracrustal interfaces are clearly revealed that correspond well to geological bodies, which might indicate boundaries of consolidated igneous bodies related to the primitive magmatic activities. A continuous Moho discontinuity at ∼37 km depth is revealed, whereas a weak Moho zone with a vertical offset of ∼4 km appears directly beneath the Tianchi caldera, which shows a clear positive correlation with the average crustal Vp/Vs ratio. We deem that the prominent crustal thickening and the higher Vp/Vs ratio beneath the Tianchi caldera might be closely associated with the complicated mantle‐derived mafic materials underplating at the crust‐mantle boundary. The joint effect of the multilevel magmatic plumbing system and a narrow magma conduit beneath the Tianchi caldera could account for the distinctive bimodal volcanic eruption history of the CBV.
Fine Crustal Velocity Structure and Deep Mineralization in South China from Joint Inversion of Gravity and Seismic Data Peer-reviewed

Ao Li, Zhengyuan Jia, Guoming Jiang, Dapeng Zhao, Guibin Zhang

Minerals　15　(7)　668-668　2025/06/20
Publisher: MDPI AG
DOI： 10.3390/min15070668 　

eISSN： 2075-163X

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The South China block (SCB) is characterized by complex tectonics, large-scale lithospheric deformation, and extensive mineralization in its southeastern region. However, the geodynamic processes and mechanisms driving mineralization remain controversial, partly due to the lack of information on its fine crustal structure. The resolution of crustal seismic tomography is relatively low due to the uneven distribution of local earthquakes in South China. In this study, we conduct a joint inversion of Bouguer gravity and seismic travel-time data to investigate the detailed 3-D P-wave velocity (Vp) structure of the crust beneath the SCB. Our results show the following: (1) strong lateral heterogeneities exist in the crust, which reflect the surface geology and tectonics well; (2) the Vp patterns at different depths beneath the Yangtze block are almost consistent, but those beneath the Cathaysia block vary significantly, which might be related to the lithosphere thinning in the Mesozoic; (3) decoupling between the upper crust and the lower crust occurs at ~20 km depth beneath the eastern SCB; (4) the Vp patterns vary beneath different metallogenic belts; and (5) distinct low-Vp anomalies exist in the lower crust beneath mineral deposits. These results suggest that the deep mineralization is closely associated with the lithospheric thinning and upwelling thermal flow in the Mesozoic beneath the eastern SCB. Our Vp tomographic result also strongly supports the viewpoint that the mineralization mechanism varies for different metallogenic belts.
High-resolution Lithospheric Shear Velocity Structure of the Suqian Segment of the Tanlu Fault Zone From Ambient Noise Tomography Peer-reviewed

Chen Ma, Jianshe Lei, Dongping Wei, Dapeng Zhao

Journal of Geophysical Research: Solid Earth　130　(5)　e2024JB030717　2025/05/06
Publisher: American Geophysical Union (AGU)
DOI： 10.1029/2024jb030717 　

ISSN： 2169-9313

eISSN： 2169-9356

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Abstract To understand causes of the Suqian seismic gap and the 1668 M8.5 Tancheng earthquake, we determine a new 3‐D S‐wave velocity (Vs) model of the lithosphere under the Suqian segment of the Tanlu fault zone in eastern China using ambient noise tomography. Rayleigh wave phase velocity dispersions at periods of 5–33 s are collected from seismograms recorded at our newly deployed TanluArray portable stations and permanent provincial seismic stations in and around the Suqian area. The addition of the TanluArray data leads to much higher tomographic resolution in the study region. Our model well depicts surface geological features and reveals strong lateral heterogeneities in and around the fault zone. Beneath the Suqian seismic gap, the upper crust and uppermost mantle show low‐velocity anomalies, whereas the middle and lower crust exhibit high‐velocity anomalies. Such a structure in the Suqian area may hinder the accumulation of tectonic stress, leading to the formation of a seismic gap. The Tancheng earthquake occurred in a transition zone between high‐ and low‐Vs anomalies in the middle crust, which is prone to stress accumulation and earthquake nucleation. The Tanlu fault zone serves as a channel for hot and wet mantle material upwelling into the crust, where fluids reduced the threshold for fault rupture and so triggered the Tancheng earthquake. The mantle upwelling may be related to dynamic processes in the big mantle wedge associated with stagnation and dehydration of the subducted Pacific slab in the mantle transition zone under East Asia.
Crustal anisotropy and deformation in the South China Block Peer-reviewed

Longchun Qian, Jianshe Lei, Dapeng Zhao

Journal of Asian Earth Sciences　289　106627　2025/04/24
Publisher: Elsevier BV
DOI： 10.1016/j.jseaes.2025.106627 　

ISSN： 1367-9120
Shear-wave tomography and cause of the 2021 Mw 7.4 Qinghai Maduo earthquake Peer-reviewed

Chao Wang, Jianshe Lei, Dapeng Zhao

Seismological Research Letters　96　2822-2835　2025/04/15
Publisher: Seismological Society of America (SSA)
DOI： 10.1785/0220240436 　

ISSN： 0895-0695

eISSN： 1938-2057

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Abstract To better understand the cause of the 2021 Mw 7.4 Maduo earthquake in western China, we collect continuous waveforms recorded at 34 portable broadband MaduoArray seismic stations newly deployed from May 2021 to June 2023, as well as those from five permanent stations near the Maduo source area. Applying the ambient noise surface-wave direct tomography method to the data set, we determine detailed 3D crustal shear-wave velocity (VS) tomography of the Maduo source area. Our results show that the shallow VS structure closely correlates with surface geological features. Secondary fault zones in the study area are located at boundaries between high- and low-VS anomalies. The Maduo mainshock took place in a high-VS anomaly, whereas most aftershocks occurred near the transition zone of high- and low-VS anomalies in the upper crust. However, a large low-VS anomaly exists beneath the Maduo source area. Integrating with previous results, we deem that this low-VS anomaly may reflect fluids in the lower crustal flow, which entered a weak section of the seismogenic fault, reduced the effective normal stress, and so triggered the 2021 Maduo earthquake. Our tomographic results reveal detailed seismic structures around two seismic gaps near the Maduo mainshock hypocenter. The eastern gap is located in a stronger high-VS anomaly, whereas the western gap is in a weaker high-VS anomaly. Our two-year earthquake sequence data show that the western gap still exists, whereas the eastern gap eventually disappeared with time.
Seismic evidence for large-scale intraslab heterogeneity beneath Northeast Japan Peer-reviewed

Jian Wang, Dengda Zhu, Zhigang Zhang, Jianming He, Ling Chen, Dapeng Zhao, Zhenxing Yao

Journal of Geophysical Research: Solid Earth　130　(4)　e2024JB030046　2025/04/05
Publisher: American Geophysical Union (AGU)
DOI： 10.1029/2024jb030046 　

ISSN： 2169-9313

eISSN： 2169-9356

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Abstract Understanding the heterogeneity within a subducting slab is essential for elucidating its rheological properties, which can significantly affect subduction dynamics. Despite the importance, the fine structure of the slab has remained largely enigmatic due to the limited resolution of seismic tomography. Here, we utilize a deep learning approach, PickNet, to collect a comprehensive data set of arrival‐times of the first P and S waves from local earthquakes in Northeast Japan. This enables the determination of a high‐resolution () model of P‐wave velocity (Vp), S‐wave velocity (Vs), and Vp/Vs ratio within the subducting Pacific slab. Our model reveals a distinct intraslab structure characterized by relatively high Vp (>+3%), slightly high Vs (<+1%), and a high Vp/Vs ratio (>+1%), extending deep into the lithospheric mantle of the slab, approximately in size between longitudes 140.6°E and 142.0°E, and latitudes 39.8°N and 40.2°N beneath Northeast Japan. This anomalous structure is associated with a decrease or absence in lower‐plane intermediate‐depth seismicity of the double seismic zone within the slab. This result suggests that the presence of intrusive minerals, potentially affected by increased iron (Fe) content due to hot mantle upwelling, may reduce the viscosity of the slab at lithospheric depths and subsequently diminish the lower‐plane seismicity. Our results highlight the presence of rheological heterogeneity within the subducting slab, providing new insights into its role in impacting the deep structure and geodynamics of the Earth, potentially facilitating slab detachment or tearing.
Oceanic subduction and craton underthrusting beneath the Bolivian orocline in Central Andes: Insight from anisotropic tomography Peer-reviewed

Zhaochen Dong, Xin Liu, Dapeng Zhao, Shujuan Zhao

Geophysical Journal International　241　1762-1779　2025/04/01
Publisher: Oxford University Press (OUP)
DOI： 10.1093/gji/ggaf123 　

ISSN： 0956-540X

eISSN： 1365-246X

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Summary To clarify the 3-D crustal and upper mantle structure of the Bolivian orocline in the Central Andes, we conduct azimuthal anisotropy tomography using newly measured teleseismic fundamental mode Rayleigh-wave phase and amplitude data at periods of 25-110 s. Our tomography shows that the subducting Nazca slab is imaged as a high-velocity zone beneath the study region, except for areas where the Nazca ridge is subducting. Azimuthal anisotropy in the subducting slab generally exhibits trench-parallel fast-velocity directions (FVDs), but it becomes complex in and around the subducting Nazca ridge. Low-velocity anomalies with trench-normal FVDs exist in the mantle wedge beneath active arc volcanoes and backarc regions beneath Altiplano. A significant high-velocity zone with relative weak anisotropy exists in the crust of the overriding plate above the Peruvian flat slab in the study region. In contrast, low-velocity anomalies with trench-parallel FVDs are revealed in the crust beneath Altiplano. Furthermore, a high-velocity zone with depth-varying FVDs appears beneath Eastern Cordillera and its surrounding regions, which may indicate the westward underthrusting cratonic lithosphere. These tomographic features well capture the primary 3-D structure of the middle-lower crust and upper mantle beneath the Bolivian orocline, which results from the subduction of an oceanic lithosphere and the delamination and underthrust of a continental lithosphere, leading to the second-highest plateau on Earth.
Anisotropic tomography and seismotectonics of the central Tanlu fault zone in East China Peer-reviewed

Guoqiang Ji, Jianshe Lei, Dapeng Zhao

Geophysical Journal International　241　1413-1431　2025/03/20
Publisher: Oxford University Press (OUP)
DOI： 10.1093/gji/ggaf104 　

ISSN： 0956-540X

eISSN： 1365-246X

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Summary We determine detailed 3-D velocity and anisotropy models of the crust beneath the central segment of the Tanlu fault zone (TLFZ) in east China using hand-picked arrival times of direct waves (Pg, Sg), refracted waves (Pn, Sn), and the Moho reflected waves (PmP and SmS) of local earthquakes recorded at 55 portable seismic stations of our newly deployed TanluArray and 45 Chinese provincial stations. Our results show that the pattern of seismic velocity and anisotropy is in good agreement with surface geological and tectonic features in the study region. Along the TLFZ, obvious low-velocity (low-V) anomalies are visible in the lower crust in the north of the Cangni fault, whereas high-velocity (high-V) anomalies appear in the upper and middle crust. The 1668 Tancheng earthquake (M8.5) and small-to-moderate earthquakes occurred in the high-V zones but underlain by low-V anomalies. The low-V zones may reflect significant effects of fluids derived from hot and wet upwelling flow in the big mantle wedge. Under the Suqian seismic gap, low-V anomalies are clearly imaged in the middle crust, whereas high-V anomalies appear in the lower crust, suggesting the absence of fluids in the deep crust, which could explain why few earthquakes occurred there. The fast velocity direction (FVD) of P-wave azimuthal anisotropy changes with depth. The FVD is parallel with the TLFZ strike in the upper crust in and around the TLFZ, reflecting the strike-slip features of the fault zone. Our results provide new seismic constraints on the structure and tectonic evolution of the TLFZ.
Whole-mantle tomography beneath eastern Mediterranean and adjacent regions Peer-reviewed

Genti Toyokuni, Dapeng Zhao

Geophysical Journal International　241　1155-1172　2025/03/07
Publisher: Oxford University Press (OUP)
DOI： 10.1093/gji/ggaf086 　

ISSN： 0956-540X

eISSN： 1365-246X

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Summary The Mediterranean and its surrounding regions are characterized by strong interactions of the Eurasian, African and Arabian Plates, as well as several microplates, resulting in significant seismic and volcanic activities. In addition, this region has a complex history of plate movements, leading to the formation of distinct orogenies such as the Alps, Apennines, and Carpathians, as well as a complex distribution of subducted slabs in the mantle. Intermediate-depth earthquakes actively occur in the subducting Vrancea slab beneath Romania. Furthermore, volcanic activity in the Caucasus and Arabian Peninsula may be stimulated by mantle plumes. To better understand the complex tectonics and seismic and volcanic activities, we need to study the detailed 3-D structure of the crust and mantle beneath this region. However, previous studies did not thoroughly investigate the 3-D structure of the whole mantle, particularly the lower mantle. Here we apply the updated global tomography method to reveal the 3-D P-wave velocity (${V}_P$) structure of the whole mantle beneath this region. We use ∼7 million P, pP, PP, PcP, and Pdiff wave arrival times of 21,629 earthquakes recorded at 14,283 seismograph stations worldwide. The resulting ${V}_P$ tomography clearly shows stagnation of the subducted African and Tethys slabs above the 660-km discontinuity, although a portion of the slab penetrates the discontinuity and sinks into the lower mantle. A big mantle wedge (BMW) has formed above the stagnant slab, which may affect the surface topography and seismic activity such as the Vrancea intermediate-depth earthquakes. A window appears between the subducting Hellenic and Cyprus slabs. Given the development of subslab hot mantle upwelling (SHMU) beneath this region, an extensive volcanic eruption in the Aegean Sea area might be powered by a mixture of island arc magma and SHMU through the slab window. Intraplate volcanoes in the Arabian Peninsula and Caucasus may be fed by hot mantle plumes rising from the core-mantle boundary.
Whole-mantle isotropic and anisotropic tomography beneath Japan and adjacent regions Peer-reviewed

Genti Toyokuni, Dapeng Zhao, Daisuke Takada

Journal of Geophysical Research: Solid Earth　130　(3)　e2024JB029593　2025/03
Publisher: American Geophysical Union (AGU)
DOI： 10.1029/2024jb029593 　

ISSN： 2169-9313

eISSN： 2169-9356

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Abstract The Japan Islands and surrounding regions have complex structures and tectonics due to strong interactions of four lithospheric plates, including the subducting Pacific and Philippine Sea slabs beneath the Okhotsk and Amurian plates, which have caused catastrophic interplate and intraplate earthquakes, as well as arc and intraplate volcanoes. The subducted Pacific slab becomes flat within the mantle transition zone, forming a big mantle wedge above the flat slab, which stimulates intraplate volcanic activities in East Asia. Furthermore, subslab hot mantle upwelling (SHMU) beneath the subducting Pacific slab may contribute to various seismic and volcanic activities. However, SHMU was sometimes claimed to be an artificial ghost resulting from isotropic tomography. Seismic anisotropy tomography is crucial for addressing such issues, because it is a powerful tool to visualize flow field in the mantle. In this study, we first use an existing isotropic tomographic method called multiscale global tomography to reveal whole‐mantle isotropic P‐wave velocity structure beneath Japan and its surrounding regions. Then we develop a novel program that incorporates seismic anisotropy into multiscale global tomography, revealing whole‐mantle P‐wave azimuthal anisotropy beneath the study region. As a result, we find for the first time that, even when anisotropy is considered, SHMU beneath the subducting Pacific slab is clearly imaged, indicating that SHMU is not a ghost of isotropic tomography. Furthermore, beneath the Izu‐Bonin region, our anisotropic tomography clearly shows that the subducted slab is split into two blocks vertically in the lower mantle, indicating intermittent slab subductions.
Late Cenozoic magmatism of the South China Sea driven by the Hainan mantle plume Peer-reviewed

Shaohong Xia, Tao Gou, Fang Zhao, Dapeng Zhao, Chaoyan Fan

Science Bulletin　70　604-608　2025/03
Publisher: Elsevier BV
DOI： 10.1016/j.scib.2024.12.010 　

ISSN： 2095-9273
Anisotropic tomography and seismotectonics of the Longmenshan fault zone in East Tibet Peer-reviewed

Xiaohui Hu, Jianshe Lei, Dapeng Zhao, Baoshan Wang

Geophysical Journal International　241　(1)　184-202　2025/02/06
Publisher: Oxford University Press (OUP)
DOI： 10.1093/gji/ggaf035 　

ISSN： 0956-540X

eISSN： 1365-246X

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SUMMARY We invert 122 147 P, S, and PmP phase arrival-times from 1549 local earthquakes for both isotropic and azimuthally anisotropic lithospheric P-wave velocity structures beneath the region of the Longmenshan fault zone, China. The use of PmP data significantly improves the spatial resolution of the middle-lower crust tomography. Our results show that widespread low-Vp anomalies exist in the middle and lower crust of the Songpan–Ganzi block and the Chuandian block, which contribute most crustal anisotropy. Moderate and strong earthquakes mainly occurred in the high-Vp and low-Vp transition zone, and obvious low-Vp anomalies appear below the seismogenic zone, indicating that the occurrence of earthquakes is affected by crustal fluids. The upper-crust anisotropy is mainly controlled by the stress field and local faults. The fast Vp directions (FVDs) on the Longmenshan fault zone are NE–SW in the lower crust and uppermost mantle, suggesting that the material flow is blocked by the Sichuan basin, so the flow moves in the NE–SW direction. The FVDs in the Longmenshan fault zone are different from the core-phase SKS splitting measurements, suggesting that the crust and lithospheric mantle are decoupled there. Our anisotropy results also suggest that the thickening deformation of the upper crust and the middle-lower crustal flow jointly control the uplift and deformation of the Longmenshan mountain.
The reservoir-induced 2023 Heyuan earthquake sequence in Guangdong, China and its geodynamic implications Peer-reviewed

Huimin Guan, Jianshe Lei, Dapeng Zhao, Xiaohui Hu

Tectonophysics　902　230681　2025/02
Publisher: Elsevier BV
DOI： 10.1016/j.tecto.2025.230681 　

ISSN： 0040-1951
Relocation of the 2024 Ms 7.1 Wushi, Xinjiang, China earthquake sequence and implications for seismogenic structure Peer-reviewed

Penghu Guan, Jianshe Lei, Dapeng Zhao

Journal of Asian Earth Sciences　279　106456　2025/02
Publisher: Elsevier BV
DOI： 10.1016/j.jseaes.2024.106456 　

ISSN： 1367-9120
Crust and uppermost mantle S-wave velocity structure of the Wudalianchi volcanic belt from direct surface-wave tomography Peer-reviewed

Xiaoyan Song, Jianshe Lei, Dapeng Zhao, Yinshuang Ai

Journal of Asian Earth Sciences　278　106426　2025/02
Publisher: Elsevier BV
DOI： 10.1016/j.jseaes.2024.106426 　

ISSN： 1367-9120
Three-dimensional ray tracing in P-wave azimuthal anisotropic media Peer-reviewed

Ryo Tsunashima, Dapeng Zhao, Genti Toyokuni

Geophysical Journal International　240　160-173　2025/01/10
Publisher: Oxford University Press (OUP)
DOI： 10.1093/gji/ggae374 　

ISSN： 0956-540X

eISSN： 1365-246X

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Summary A new 3-D ray tracing method is developed for P-wave azimuthal anisotropic (AAN) media. We assume anisotropic media with hexagonal symmetry and take advantage of the property that the AAN symmetry axis, the phase velocity vector, and the group velocity vector are located in the same plane. The 3-D ray tracing method that combines the pseudo-bending technique and Snell's law is improved for the AAN media. We compute isotropic (ISO) and AAN rays in synthetic models and an actual 3-D P-wave AAN model of the East Japan subduction zone. The accuracy of our ray tracing code is evaluated by comparing the ray-path and travel-time differences between the ISO and AAN rays. Our results show that the AAN rays in each model bend in the right direction and satisfy Fermat's principle, so the theory and approximations adopted in the calculations are reasonable. For long rays (&gt;350 km), the ray-path difference between the ISO and AAN rays is &gt; 20 km, and the travel-time difference is &gt; 0.1 s, suggesting that it is necessary and important to take azimuthal anisotropy into account in the 3-D ray tracing.
Lithospheric structure of Northeast China from dense array receiver functions: Insight into two-side subduction of the Paleo-Asian Ocean plate Peer-reviewed

Honghao Li, You Tian, Dapeng Zhao, Hongli Li

Gondwana Research　139　166-178　2025/01
Publisher: Elsevier BV
DOI： 10.1016/j.gr.2024.11.012 　

ISSN： 1342-937X
Teleseismic evidence for structural heterogeneity in East Japan forearc from seafloor S-net data Peer-reviewed

Motoya Suzuki, Dapeng Zhao, Genti Toyokuni, Ryota Takagi

Tectonophysics　895　230579　2025/01
Publisher: Elsevier BV
DOI： 10.1016/j.tecto.2024.230579 　

ISSN： 0040-1951
Mantle structure, anisotropy, and dynamics of the Mendocino Triple Junction, northern California, USA Peer-reviewed

Ziqiang Yang, Dapeng Zhao, Yunpeng Dong, Bin Cheng

Geological Society of America Bulletin　137　(1)　156-166　2025/01/01
Publisher: Geological Society of America
DOI： 10.1130/b37367.1 　

ISSN： 0016-7606

eISSN： 1943-2674

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We determined a detailed 3-D model of P-wave anisotropic tomography of the crust and upper mantle beneath the Mendocino Triple Junction (northern California, USA) by using a large number of high-quality P-wave travel-time data of local and teleseismic events recorded by the dense seismic network on the North American continent. Our results show the presence of a slab window and the upwelling asthenosphere material through the slab window directly contacts the surrounding plates. A high-velocity anomaly is revealed at depths of ∼300−400 km beneath the triple junction, which reflects a fragment of the Monterey microplate associated with breaking-off of the Farallon plate. Depth-varying seismic anisotropy occurs in the upper mantle and exhibits a circular pattern, which is mainly caused by 3-D mantle flow around the southern edge of the Gorda plate. Subduction-driven corner flow appears in the mantle wedge. After the Farallon plate first contacted the North American plate, as it broke apart and a slab window formed, the Pacific plate captured the plate remnant and moved northwestward together. Then the Monterey plate fractured and sank into the mantle, where it was subjected to shearing forces from both the Pacific and North American plates and moved to its current position.
Uncovering the complexity of source mechanism in an anisotropic coal mine using sequential inversion

Chun-Hui Song, Cai-Ping Lu, Xiu-Feng Zhang, Chao Wang, Jie-Fang Song, Yang Liu, Shi-Dong Li, Dapeng Zhao

Scientific Reports　14　(1)　31495　2024/12/28
Publisher: Springer Science and Business Media LLC
DOI： 10.1038/s41598-024-83226-5 　

eISSN： 2045-2322
Accretionary wedge, arc magmatism and fluid migration in northern Sumatra: Insight from seismic attenuation tomography Peer-reviewed

Debiao Liu, Zewei Wang, Dapeng Zhao, Hao Hu, Rui Gao

Journal of Geophysical Research: Solid Earth　129　(12)　e2024JB029777　2024/12/16
Publisher: American Geophysical Union (AGU)
DOI： 10.1029/2024jb029777 　

ISSN： 2169-9313

eISSN： 2169-9356

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Abstract The first three‐dimensional (3‐D) P and S wave attenuation (Qp and Qs) tomography of the crust and upper mantle of the northern Sumatra subduction zone is determined. We adopt an improved calculation scheme to precisely measure attenuation factor t* values from velocity amplitude spectral ratios among different stations that recorded the same earthquake. Our tomographic results show that the forearc accretionary wedge in Sumatra exhibits a significant high‐attenuation (low‐Q) zone along the trench. The seismic attenuation characteristics of the forearc accretionary wedge are probably influenced by variations in temperature and water content. The middle and upper crust beneath active arc volcanoes shows low‐Q and high‐Qp/Qs, while the lower crust exhibits less low‐Q and low‐Qp/Qs, probably reflecting hot volcanic roots with different water saturations from the upper to lower crust. Beneath the Toba volcano that had a super‐eruption ∼74,000 years ago, a distinct low‐Qp/Qs zone is revealed, which may reflect a transport pathway of fluids and/or local melts ascending from a slab window. The subducting Indo‐Australian slab beneath the forearc island chain exhibits a low‐Q and low‐Qp/Qs belt, reflecting a moderate water saturation probably associated with backthrust faulting. High‐Q and high‐Qp/Qs zones appear along the slab surface, reflecting large amounts of fluids releasing from the slab dehydration, which may increase pore pressure and cause intense intraslab seismicity.
地震波トモグラフィーから見た地震火山活動と地球内部ダイナミクス Invited Peer-reviewed

趙大鵬

地震ジャーナル　78　13-31　2024/12

DOI： 10.60191/eqj.2024.78_13 　
Slab-plume interactions beneath Australia and New Zealand: New insight from whole-mantle tomography Peer-reviewed

Genti Toyokuni, Dapeng Zhao

Geochemistry, Geophysics, Geosystems　25　(11)　e2024GC011739　2024/11/26
Publisher: American Geophysical Union (AGU)
DOI： 10.1029/2024gc011739 　

ISSN： 1525-2027

eISSN： 1525-2027

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Abstract Australia, New Zealand, and the surrounding regions have experienced complex plate interactions with significant seismic and volcanic activities. The Taupo volcano on the North Island of New Zealand has experienced multiple catastrophic eruptions. Although Australia is known as a stable landmass with low seismic and volcanic activity, intraplate volcanoes along its eastern coast are considered to be caused by hot mantle plumes. To better understand the seismic and volcanic activities in the region, it is necessary to study the detailed 3‐D structure of the crust and mantle. Here we apply a well‐established global tomography method to reveal the 3‐D P‐wave velocity () structure of the whole mantle beneath this region. We used ∼7 million P, pP, PP, PcP, and Pdiff wave arrival times of 23,666 earthquakes recorded at 14,181 seismograph stations worldwide. The resulting tomography clearly shows high‐ subducted slabs, and low‐ anomalies above and below the slabs, which may reflect corner flow in the mantle wedge and subslab hot mantle upwelling (SHMU), respectively. A slab window is revealed beneath the North Island of New Zealand. Given the development of SHMU beneath this region, the catastrophic eruptions of the Taupo volcano might be powered by a mixture of island arc magma and SHMU through the slab window. Beneath the intraplate volcanoes along the eastern coast of Australia and the Tasman Sea, a thin low‐ zone exists and extends down to the core‐mantle boundary, suggesting that the intraplate volcanoes might be, at least partially, fed by a plume rising from the lower mantle.
The magmatic plumbing beneath the Wudalianchi volcanic region, northeast China, is recharged by magma reservoirs under Keluo volcano Peer-reviewed

Ziqiang Lü, Jianshe Lei, Dapeng Zhao, Yi-Gang Xu, Lijun Liu, Changqing Sun, Yinshuang Ai, Tuncay Taymaz

Communications Earth & Environment　5　(1)　575　2024/10/09
Publisher: Springer Science and Business Media LLC
DOI： 10.1038/s43247-024-01748-2 　

eISSN： 2662-4435
Upper mantle shear velocity structure of the Cathaysia Block and surrounding areas: New insight into deep geodynamics Peer-reviewed

Yao Xu, Qingtian Lü, Dapeng Zhao, Jiayong Yan, Danian Shi, Yongqian Zhang, Shuai Ruan, Zhiwu Xu, Changxin Chen, Wenwen Zhang, Xu Wang

Tectonophysics　892　230542　2024/10
Publisher: Elsevier BV
DOI： 10.1016/j.tecto.2024.230542 　

ISSN： 0040-1951
Machine-learning based location of the 2021 Mw 7.4 Maduo, Qinghai, China earthquake sequence: Insight into intraplate seismogenesis Peer-reviewed

Penghu Guan, Jianshe Lei, Dapeng Zhao

Tectonophysics　888　230458　2024/10
Publisher: Elsevier BV
DOI： 10.1016/j.tecto.2024.230458 　

ISSN： 0040-1951
Subduction-driven mantle flow beneath active back-arc basins inferred from seismic anisotropy tomography Peer-reviewed

Di Zhao, Xin Liu, Dapeng Zhao, Qingyu Qiao, Long Zhao

Earth and Planetary Science Letters　643　118890　2024/10
Publisher: Elsevier BV
DOI： 10.1016/j.epsl.2024.118890 　

ISSN： 0012-821X
Wudalianchi volcanism and mantle dynamics in Northeast China: New insight from Pn and Sn tomography Peer-reviewed

Mofei Du, Jianshe Lei, Dapeng Zhao, Yinshuang Ai, Hongbin Lu, Changqing Sun

Physics of the Earth and Planetary Interiors　356　107260　2024/09
Publisher: Elsevier BV
DOI： 10.1016/j.pepi.2024.107260 　

ISSN： 0031-9201
Multiple Slabs and Complex Mantle Flows in the Molucca Sea Subduction Zone Peer-reviewed

Tianmeng Yuan, Zewei Wang, Dapeng Zhao, Rui Gao, Xiaofei Chen

Geochemistry, Geophysics, Geosystems　25　(8)　e2024GC011500　2024/08/13
Publisher: American Geophysical Union (AGU)
DOI： 10.1029/2024gc011500 　

ISSN： 1525-2027

eISSN： 1525-2027

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Abstract The Molucca Sea subduction zone is unique for its active divergent double‐subducted slab located in the north of the Java and Banda subduction zones. The spatial proximity of these subduction zones would cause a complex mantle flow field. To clarify the mantle dynamics, here we present P‐wave tilting‐axis anisotropic tomography obtained by inverting a large number of local and teleseismic travel‐time data recorded at 254 seismic stations in eastern Southeast Asia. Our results suggest that the mantle structure and dynamics of the western Molucca Sea subduction zone may be remotely controlled by the Java and Banda subduction zones. Mantle convection in the big mantle wedge west of the Molucca Sea subduction zone is possibly influenced by east‐west mantle flow associated with compression of the Indo‐Australian slab as well as north‐south mantle flow related to rollback of the Indo‐Australian slab. In contrast, the eastern Molucca Sea subduction zone is virtually unaffected by other subduction zones, probably due to the ongoing slab subduction there.
Relocation of the 2021 Mw 7.4 Maduo, Qinghai, China earthquake sequence and implications for seismogenic structure Peer-reviewed

Penghu Guan, Jianshe Lei, Dapeng Zhao

Journal of Asian Earth Sciences　274　106276　2024/08
Publisher: Elsevier BV
DOI： 10.1016/j.jseaes.2024.106276 　

ISSN： 1367-9120
Anisotropic tomography of eastern Tibet and its uncertainty from hypocentral errors Peer-reviewed

Ruo Jia, Dapeng Zhao, Rizheng He

Geophysical Journal International　238　1223-1236　2024/06/22
Publisher: Oxford University Press (OUP)
DOI： 10.1093/gji/ggae221 　

ISSN： 0956-540X

eISSN： 1365-246X

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Summary The mechanism responsible for the lateral expansion and uplift of the eastern Tibetan Plateau remains a topic of ongoing debate, partly due to discrepancies in the results of seismic velocity and anisotropy. In local earthquake tomography, hypocentral uncertainties can cause significant errors in the tomographic model. However, this issue has received limited attention in previous studies. In this work, we employ the weighted least-squares (WLS) method to solve the tomographic inversion problem. A power exponent coefficient, which is called weighting level, is introduced into the weighting matrix to control the relative contribution of the data with different hypocentral errors to the final tomographic result. Our data set contains high-quality Pg, Pn and Sg arrival times of local earthquakes recorded by the dense Chinese seismic network in eastern Tibet during 2008 to 2022. We comprehensively analyze the inversion results derived from the WLS inversions with different weighting levels to evaluate the robustness of isotropic velocity anomalies and azimuthal anisotropy. The most robust feature of our results is a striking low-velocity (low-Vp) zone surrounded by high-velocity (high-Vp) anomalies and fault parallel fast-velocity directions (FVDs) of azimuthal anisotropy in the lower crust beneath the western side of the Longmenshan fault zone. Taking into account many previous results of the region, we deem that the low-Vp zone reflects hot and wet upwelling flow from the deep asthenosphere, which ascends to the lower crust along the fault zone. At the NE margin of the Tibetan Plateau, significant low-Vp anomalies exist in the lower crust and the FVDs are consistent with the motion direction of the Tibetan block revealed by GPS observations. We think that lower crustal flow exists beneath NE Tibet, which controls the plateau expansion toward the northeast. A low-Vp anomaly appears at 30 km depth beneath the Sichuan Basin. However, as the weighting level increases, the amplitude of this low-Vp anomaly decreases by more than 6%, suggesting that this low-Vp anomaly has a larger uncertainty than the other features.
Azimuthal seismic anisotropy in the crust beneath the Granada Basin (Spain) Peer-reviewed

I. Serrano, M.A. Dengra, F. Torcal, D. Zhao

Tectonophysics　882　230360　2024/05
Publisher: Elsevier BV
DOI： 10.1016/j.tecto.2024.230360 　

ISSN： 0040-1951
Shear wave splitting and mantle dynamics of the southern Great Xing'an orogenic belt Peer-reviewed

Fei Gao, You Tian, Dapeng Zhao, Hongli Li, Cai Liu

Tectonophysics　880　230336　2024/05
Publisher: Elsevier BV
DOI： 10.1016/j.tecto.2024.230336 　

ISSN： 0040-1951
Uppermost mantle structure and dynamics of the Tanlu fault zone: New insights from Pn anisotropic tomography Peer-reviewed

Hongbin Lu, Jianshe Lei, Dapeng Zhao

Journal of Asian Earth Sciences　268　106170　2024/05
Publisher: Elsevier BV
DOI： 10.1016/j.jseaes.2024.106170 　

ISSN： 1367-9120
Modification of Archean cratons in southern Africa with foundered segments dropped into the shallow lower mantle Peer-reviewed

Jiaji Xi, Youqiang Yu, Dapeng Zhao, Jiashun Hu

Geology　52　468-472　2024/03/19
Publisher: Geological Society of America
DOI： 10.1130/g52023.1 　

ISSN： 0091-7613

eISSN： 1943-2682

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Subducted slabs have been detected in the lower mantle for almost 30 years, yet the presence of foundered cratonic segments in the lower mantle is still unclear and inadequately investigated. We present the first P-wave radial anisotropy tomography of southern Africa (our model SA-RAnis2024), which reveals a contrasting feature of preserved northwest and modified southeast Kalahari cratonic root. Segments from the modified cratonic lithosphere are inferred to have dropped into the shallow lower mantle where seismic evidence of isolated high-velocity anomalies are observed. We detect such a high-velocity anomaly under the southwest margin of the Kalahari craton, which possibly detached from the southeast Zimbabwe craton at ca. 60 Ma based on plate reconstructions. Foundered segments can be partially brought back up to shallow depths, and contribute to the geochemical heterogeneity of younger lithosphere, through large-scale mantle convection.
Remnants of shifting early Cenozoic Pacific lower mantle flow imaged beneath the Philippine Sea Plate Peer-reviewed

Jianke Fan, Dapeng Zhao, Cuilin Li, Lijun Liu, Dongdong Dong

Nature Geoscience　17　(4)　347-352　2024/03/12
Publisher: Springer Science and Business Media LLC
DOI： 10.1038/s41561-024-01404-6 　

ISSN： 1752-0894

eISSN： 1752-0908

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Abstract Seismic anisotropy could provide vital information about the evolution and internal convection of the deep Earth interior. Although previous seismological studies have revealed a wide distribution of seismic anisotropy in the upper portion of the lower mantle beneath many subduction zones, the existence of anisotropy at these depths away from subducted slabs remains debated. Here we use P-wave azimuthal anisotropy tomography to image the crust and mantle down to 1,600-km depth. We find prominent anisotropic patterns in the upper portion of the lower mantle beneath the Philippine Sea Plate. Substantial azimuthal anisotropy with N–S fast-velocity directions occurs at 700–900-km depths. We interpret this azimuthal anisotropy as a remnant of the Pacific lower mantle flow field about 50 million years ago. Two isolated high-velocity anomalies at 700–1,600-km depths may be vestigial pieces of the subducted Izanagi slab with seismic velocity features suggesting a shift in the Pacific lower mantle flow field by about 40 million years ago. Our findings provide seismic evidence for the existence of complex lower mantle flows and deformation mechanisms away from subduction zones.
Tilting‐Axis Anisotropic Tomography and Subduction Dynamics of the Java‐Banda Arc Peer-reviewed

Fan Xie, Zewei Wang, Dapeng Zhao, Rui Gao, Xiaofei Chen

Geophysical Research Letters　51　(5)　e2023GL107720　2024/03/05
Publisher: American Geophysical Union (AGU)
DOI： 10.1029/2023gl107720 　

ISSN： 0094-8276

eISSN： 1944-8007

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Abstract The 180° curvature of the Banda arc at the eastern end of the Java‐Banda subduction zone reflects complicated geodynamic processes. A detailed investigation of its anisotropic structure would reveal its subduction dynamics, further resolving the controversial issue on how the highly arcuate Banda arc formed. We apply tilting‐axis anisotropic tomography to obtain a high‐resolution 3‐D anisotropic model beneath the Java‐Banda region. Our results show significant differences between Java and Banda in the pattern of anisotropy in both the subducting slab and its surrounding mantle, which reflect two distinctly different deformation modes in the two domains. Our results support the single‐slab subduction model for the Banda region. In addition, trench‐normal and upright fast‐velocity‐planes appear in the deep upper mantle, which may indicate material migrations in the big mantle wedge. Fast‐velocity‐planes in the shallow mantle exhibit a toroidal distribution, reflecting past counter‐clockwise rotation and asthenospheric material extrusion.
Structure and dynamics of southern Mariana margin: Constraints from seismicity, tomography and focal mechanisms Peer-reviewed

Xinyang Wang, Shaohong Xia, Hongfeng Yang, Han Chen, Dapeng Zhao

Tectonophysics　878　230300　2024/03
Publisher: Elsevier BV
DOI： 10.1016/j.tecto.2024.230300 　

ISSN： 0040-1951
Subduction transforms azimuthal anisotropy in the Juan de Fuca plate Peer-reviewed

Xingyu Ren, Xin Liu, Dapeng Zhao

Tectonophysics　877　230272　2024/03
Publisher: Elsevier BV
DOI： 10.1016/j.tecto.2024.230272 　

ISSN： 0040-1951
Cause of Enigmatic Upper-Mantle Earthquakes in Central Wyoming Peer-reviewed

Dapeng Zhao, Xuran Liang, Genti Toyokuni, Yuanyuan Hua, Yi-Gang Xu

Seismological Research Letters　95　(4)　2497-2505　2024/02/29
Publisher: Seismological Society of America (SSA)
DOI： 10.1785/0220230333 　

ISSN： 0895-0695

eISSN： 1938-2057

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Abstract Earthquakes deeper than 60 km generally occur in subducting slabs. However, on 21 September 2013 two earthquakes (M 4.8 and 3.0) occurred at ∼71 to 75 km depths in the upper mantle beneath central Wyoming in the stable North American continent, where there is no actively subducting slab at present. The cause of the two events is still unclear. Here, we present detailed 3D P-wave isotropic and anisotropic tomography down to 750 km depth under Wyoming and adjacent areas. Our result shows that the two Wyoming events took place within a high-velocity (high-V) body at 0–160 km depths, which may be part of dense continental lithosphere. Another high-V body exists at ∼300 to 500 km depths, which may reflect a remnant of the subducted Farallon slab. A significant low-velocity (low-V) zone appears at ∼200 to 300 km depths between the two high-V bodies, and the low-V zone exhibits seismic anisotropy that VP is greater in the vertical direction than that in the horizontal direction. The low-V zone may include ascending fluids from dehydration of the subducted slab remnant, which was promoted by the nearby hot Yellowstone plume. It is highly possible that the ascending fluids induced the 2013 Wyoming upper-mantle earthquakes.
Anisotropic tomography and mantle dynamics of the North China Craton Peer-reviewed

Huili Guo, Dapeng Zhao, Zhifeng Ding

Geophysical Journal International　236　1455-1470　2024/01/18
Publisher: Oxford University Press (OUP)
DOI： 10.1093/gji/ggad497 　

ISSN： 0956-540X

eISSN： 1365-246X

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Summary We present high-resolution 3-D images of isotropic P wave velocity (Vp), azimuthal anisotropy (AAN), and radial anisotropy (RAN) down to 700 km depth beneath the North China Craton (NCC) and adjacent areas, which are obtained by inverting a great number of high-quality arrival time data recorded at 1 374 portable seismic stations and 635 permanent stations in the study region. Our results reveal new and detailed features of the upper mantle structure beneath the NCC. Varying structural heterogeneities are revealed beneath different tectonic blocks, and differences also exist between northern and southern parts of each block. The fast velocity directions (FVDs) of azimuthal anisotropy are mainly NW-SE under the Alaxa block, and NE-SW beneath the Tibetan Plateau. The FVDs present an arc transition along the boundary faults separating the Tibetan Plateau, the Alaxa block, the western NCC and the Sichuan basin. Low-Vp anomalies with positive RANs (i.e. horizontal Vp &gt; vertical Vp) are revealed at 100-200 km depths under the Tibetan Plateau, reflecting frozen-in anisotropy in the thick lithosphere. Significant low-Vp anomalies with a circular AAN pattern exist at 0-700 km depths beneath the Datong volcano. In addition, negative RAN occurs right below the volcano, whereas positive RANs appear around it, suggesting that the Datong volcano is fed by hot upwelling flow from the lower mantle associated with collapsing of subducted slab materials down to the lower mantle. The eastern NCC shows complex Vp AANs and RANs. Seismic anisotropy exhibits east-west variations in the upper mantle across the Tanlu fault zone. The west of the Tanlu fault shows negative RANs (vertical Vp &gt; horizontal Vp), whereas its east shows positive RANs at 300-500 km depths. The low-Vp anomaly under the Datong volcano is connected with a large low-Vp anomaly beneath the eastern NCC above ∼250 km depth, suggesting that the hot upwelling flow under Datong may migrate laterally to the asthenosphere under the eastern NCC and contribute to the lithospheric delamination and destruction there.
Seismic evidence for break-off of the Molucca Sea slab Peer-reviewed

Tianmeng Yuan, Zewei Wang, Dapeng Zhao, Rui Gao, Xiaofei Chen

Tectonophysics　874　230218　2024/01
Publisher: Elsevier BV
DOI： 10.1016/j.tecto.2024.230218 　

ISSN： 0040-1951
Big Mantle Wedge and Intraplate Volcanism in Alaska: Insight From Anisotropic Tomography Peer-reviewed

Xuran Liang, Dapeng Zhao, Yuanyuan Hua, Yi‐Gang Xu

Journal of Geophysical Research: Solid Earth　129　(1)　e2023JB027617　2024/01/01
Publisher: American Geophysical Union (AGU)
DOI： 10.1029/2023jb027617 　

ISSN： 2169-9313

eISSN： 2169-9356

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Abstract We determine high‐resolution tomographic models of isotropic P‐wave velocity (Vp) and tilting‐axis anisotropy of the Alaska subduction zone using a large number of local and teleseismic data recorded at many portable and permanent network stations in and around Alaska. We find a flat high‐Vp slab in the mantle transition zone (410–670 km depths) beneath western Alaska, which is connected with the subducting Pacific slab at 0–410 km depths, suggesting that a big mantle wedge has formed under western Alaska. Our tilting‐axis anisotropy model reveals complex mantle flows in the asthenosphere. Corner flow in the mantle wedge above the subducting Pacific slab and toroidal flow in the big mantle wedge are revealed, which may cause the Cenozoic intraplate volcanoes in western Alaska and the Bering Sea. In central Alaska, the mantle wedge beneath the Denali volcanic gap is characterized by high‐Vp and subhorizontal fast velocity directions normal to the volcanic arc, which may reflect a remnant of the subducted Yakutat slab. In SE Alaska, the shallow subduction of the Wrangell slab is visible above 150 km depth, and hot mantle upwelling through the Wrangell‐Yakutat slab gap may contribute to the Wrangell volcanic field.
Mapping Mantle Flows and Slab Anisotropy in the Cascadia Subduction Zone Peer-reviewed

Xuran Liang, Dapeng Zhao, Yuanyuan Hua, Yi‐Gang Xu

Geophysical Research Letters　50　(23)　e2023GL105527　2023/12/02
Publisher: American Geophysical Union (AGU)
DOI： 10.1029/2023gl105527 　

ISSN： 0094-8276

eISSN： 1944-8007

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Abstract The Cascadia margin is an unusual subduction zone characterized by the downdip movement of young and thin oceanic plates, where mantle flow and intraslab deformation are still unclear. Here we present new anisotropic tomography of the Cascadia subduction zone, in which the hexagonal symmetry axis of anisotropy is tilting rather than horizontal or vertical as assumed in previous studies of seismic anisotropy. Subduction‐induced entrained and toroidal flows under the Cascadia margin are discriminated well by the spatial relationship between tilting‐axis anisotropy and slab geometry. The obliquely entrained flow is trapped in a narrow zone (<100 km wide) above and below the subducting slab and reaches ∼200 km depth, which is surrounded by large‐scale sub‐horizontal toroidal flow. The intraslab anisotropy is trench‐normal above 80 km depth but changes to trench‐parallel at 100–400 km depths, which may reflect fossil anisotropy overprinted by deep deformation beneath the arc, or joint effect of serpentinization and hydrous faulting.
Ancient slabs beneath Arctic and surroundings: Izanagi, Farallon, and in-betweens Peer-reviewed

Genti Toyokuni, Dapeng Zhao

Progress in Earth and Planetary Science　10　(1)　64　2023/11/08
Publisher: Springer Science and Business Media LLC
DOI： 10.1186/s40645-023-00595-7 　

eISSN： 2197-4284

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Abstract A detailed 3-D tomographic model of the whole mantle beneath the northern hemisphere (north of ~ 30°N latitude) is obtained by inverting a large amount of P-wave arrival time data (P, pP, and PP) to investigate transition of subducted slabs beneath Eurasia–Arctic–North America. We apply an updated global tomographic method that can investigate the whole mantle 3-D structure beneath a target area with high resolution comparable to that of regional tomography. The final tomographic model is obtained by performing independent calculations for 12 different target areas and stitching together the results. Our model clearly shows the subducted Izanagi and Farallon slabs penetrating into the lower mantle beneath Eurasia and North America, respectively. In the region from Canada to Greenland, a stagnant slab lying below the 660-km discontinuity is revealed. Because this slab has a texture that seems to be due to subducted oceanic ridges, the slab might be composed of the Farallon and Kula slabs that had subducted during ~60–50 Ma. During that period, a complex rift system represented by division between Canada and Greenland was developed. The oceanic ridge subduction and hot upwelling in the big mantle wedge above the stagnant slab caused a tensional stress field, which might have induced these complex tectonic events.
Deep geodynamics and metallogenic mechanism of the South China block: New insight from mantle tomography Peer-reviewed

Shiying Li, Guoming Jiang, Dapeng Zhao, Guibin Zhang, Qingtian Lü, Danian Shi, Guangbin Chai

Tectonophysics　869　230107　2023/11
Publisher: Elsevier BV
DOI： 10.1016/j.tecto.2023.230107 　

ISSN： 0040-1951
Shear-wave tomography of the Changbai volcanic area in NE China derived from ambient noise and seismic surface waves Peer-reviewed

Honghao Li, You Tian, Dapeng Zhao, Rajesh Kumar, Hongli Li, Dong Yan, Cai Liu

Journal of Asian Earth Sciences　258　105482　2023/11
Publisher: Elsevier BV
DOI： 10.1016/j.jseaes.2022.105482 　

ISSN： 1367-9120
Seismic evidence for collisional tectonics of the North China and Yangtze blocks in the Tongbai-Dabie orogenic belt Peer-reviewed

Hongwei Zheng, Dapeng Zhao, Rizheng He, Hui Yang, Xiao Niu, Zongxu Li

Journal of Asian Earth Sciences　258　105878　2023/10/09
Publisher: Elsevier BV
DOI： 10.1016/j.jseaes.2023.105878 　

ISSN： 1367-9120
Detached Pacific Slab Beneath the Philippine Sea Plate and Its Geodynamical Implications Peer-reviewed

Jianke Fan, Dapeng Zhao, Cuilin Li, Dongdong Dong

Geochemistry, Geophysics, Geosystems　24　(10)　e2023GC010883　2023/10/02
Publisher: American Geophysical Union (AGU)
DOI： 10.1029/2023gc010883 　

ISSN： 1525-2027

eISSN： 1525-2027

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Abstract Formation and evolution of the Philippine Sea Plate (PSP) are still highly debated, mainly because the PSP has been surrounded by subduction zones since its inception. Therefore, it is vital to determine a new tomographic model with higher resolution to precisely portray the subducted slabs beneath and around the PSP, in particular, the subducted Pacific slab that has played an essential role in the PSP formation and evolution. In this study, an updated tomographic model is obtained by inverting a large number of P‐wave arrival times of local and regional earthquakes in and around the PSP. Our tomography reveals a detached piece of the Pacific slab in the mantle transition zone beneath the middle PSP, which may be mainly related to the PSP clockwise rotation and transform or strike‐slip faults in this region. The detached Pacific slab may promote the formation and evolution of the Shikoku and Parece‐Vela basins and the Mariana Trough by inducing hot mantle upwelling. Our tomography also reveals isolated high‐velocity anomalies beneath the southernmost PSP, which may reflect remnants of the subducted slab at the beginning of the PSP formation. A high‐velocity gap appears beneath the southern PSP, which may reflect the influence of a mantle plume.
P and S Wave Anisotropic Tomography of the Banda Subduction Zone Peer-reviewed

Yuanyuan Hua, Dapeng Zhao, Yi‐Gang Xu

Geophysical Research Letters　50　(18)　e2023GL105611　2023/09/16
Publisher: American Geophysical Union (AGU)
DOI： 10.1029/2023gl105611 　

ISSN： 0094-8276

eISSN： 1944-8007

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Abstract In subduction zones with slab‐slab interactions, the pattern of mantle convection is very complex and still unclear. In this study, we jointly invert a large number of P and S wave arrival time data of local earthquakes for 3‐D isotropic and anisotropic velocity structures of the Banda subduction zone. Along the curved Banda arc, the subducting Indo‐Australian slab is detected clearly as a high‐velocity zone, and its azimuthal anisotropy changes along the arc strike, representing fossil anisotropy within the slab and modified anisotropy by the subduction processes. Around the northern edge of the Banda slab, a semi‐toroidal pattern of anisotropy appears in low‐velocity anomalies, representing mantle flow extruded from the Banda arc and escaped from a gap of the Banda‐Molucca slab toward the northeast. Our 3‐D anisotropic tomography uncovers the mantle convection pattern induced by the slab‐slab interactions, shedding new light on the complex dynamical processes in this curved subduction zone.
Seismicity and magmatic system of the Changbaishan intraplate volcano in East Asia Peer-reviewed

Dong Yan, You Tian, Dapeng Zhao, Hongli Li

Journal of Geophysical Research: Solid Earth　128　e2023JB026853　2023/09/11
Publisher: American Geophysical Union (AGU)
DOI： 10.1029/2023jb026853 　

ISSN： 2169-9313

eISSN： 2169-9356

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Abstract A high‐precision earthquake catalog is made from continuous waveform data recorded at 360 portable seismographs deployed for one month in the Changbaishan‐Tianchi volcanic area based on an automatic earthquake detection and location workflow. Then we investigate detailed 3‐D structures of P and S wave velocities (Vp and Vs) and Vp/Vs ratio of the crust beneath the study region. Our results reveal a high‐Vp/Vs zone accompanied with active volcanic earthquakes beneath the Tianchi caldera at ∼5 km depth, which may reflect a magma chamber. The intense seismic activities within 2 km depth beneath the Tianchi caldera from 2002 to 2005 occurred directly above the magma chamber revealed by this study, which could be related to upward migration of high‐pressure volatiles originating from the magma chamber. A potential middle‐crustal magma chamber might provide continuous magmatic materials feeding the upper‐crust magma chamber and lead to ruptures of surrounding rocks, resulting in two swarms of volcanic seismicity during the observation period. We deem that the diverse eruption styles of the Changbaishan volcano are closely associated with the multilevel structure of magma chambers in the upper and middle crust.
Seismic anisotropy tomography beneath La Palma in the Canary Islands, Spain Peer-reviewed

I. Serrano, M.A. Dengra, F.J. Almendros, F. Torcal, D. Zhao

Journal of Volcanology and Geothermal Research　441　107870　2023/07
Publisher: Elsevier BV
DOI： 10.1016/j.jvolgeores.2023.107870 　

ISSN： 0377-0273
New seismic constraints on arc magmatism and subduction dynamics beneath the Japan Islands from Sn tomography Peer-reviewed

Mofei Du, Jianshe Lei, Dapeng Zhao

Journal of Asian Earth Sciences　256　105802　2023/07
Publisher: Elsevier BV
DOI： 10.1016/j.jseaes.2023.105802 　

ISSN： 1367-9120
A slab window beneath North Sumatra revealed by P‐wave mantle tomography Peer-reviewed

Hao Hu, Dapeng Zhao, Jian Lin, Simone Pilia

Journal of Geophysical Research: Solid Earth　128　(6)　e2022JB025976　2023/06/17
Publisher: American Geophysical Union (AGU)
DOI： 10.1029/2022jb025976 　

ISSN： 2169-9313

eISSN： 2169-9356
Anisotropic tomography of the East Japan subduction zone: influence of inversion algorithms Peer-reviewed

Ruo Jia, Dapeng Zhao

Geophysical Journal International　234　2199-2213　2023/05/12
Publisher: Oxford University Press (OUP)
DOI： 10.1093/gji/ggad197 　

ISSN： 0956-540X

eISSN： 1365-246X

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Summary An important element of seismic tomography is the inversion process. In this work we use P-wave arrival times of local earthquakes recorded at onshore and offshore seismic stations in East Japan to investigate the influence of two well-known inversion algorithms (LSQR and L-BFGS-B) on anisotropic tomography. Our synthetic tests show that a large damping parameter in the LSQR algorithm can lead to a stable and fast convergence, but it can result in many small value disturbances. The L-BFGS-B algorithm, which has second-order convergence, could converge fast to the optimal solution without damping regularization, but an inappropriate bound on the unknown parameters makes them hard to be recovered fully and causes strong trade-off between isotropic velocity and azimuthal anisotropy. If appropriate control parameters are adopted, the two inversion algorithms lead to almost the same results, though the L-BFGS-B provides a more efficient convergence and leads to a slightly better fit to the data than LSQR does. The two algorithms are applied to investigate the 3-D P-wave velocity (Vp) structure and azimuthal anisotropy of the East Japan subduction zone. Our results show that high-Vp anomalies and trench-normal fast-velocity directions (FVDs) exist in the forearc crust beneath the Pacific Ocean off South Hokkaido, which may reflect a cold and hydrated forearc crust with aligned microcracks or fractures. Significant low-Vp anomalies and trench-parallel FVDs exist at 40–80 km depths beneath Hokkaido, reflecting a water-rich mantle wedge with aligned B-type olivine. In the subducting Pacific slab, strong anisotropy with trench-parallel FVDs is revealed, reflecting localized horizontal bending of the slab.
Seismic anisotropy and geodynamics of the East Japan subduction zone Peer-reviewed

Dapeng Zhao, Jian Wang, Zhouchuan Huang, Xin Liu, Zewei Wang

Journal of Geodynamics　156　101975　2023/05
Publisher: Elsevier BV
DOI： 10.1016/j.jog.2023.101975 　

ISSN： 0264-3707
The 4 January 2020 offshore Pearl River Estuary earthquake sequence in South China: Implications for seismic potential of the NW-striking local faults Peer-reviewed

Shaohong Xia, Jiangnan Lin, Dapeng Zhao, Jinghe Cao, Changrong Zhang, Xinyang Wang, Kuiyuan Wan, Chaoyan Fan

Journal of Asian Earth Sciences　258　105697　2023/05
Publisher: Elsevier BV
DOI： 10.1016/j.jseaes.2023.105697 　

ISSN： 1367-9120
Seismic evidence for slab detachment beneath the Taiwan Orogen Peer-reviewed

Wenhui Quan, Xin Liu, Dapeng Zhao, Sanzhong Li

Earth and Planetary Science Letters　610　118131　2023/05
Publisher: Elsevier BV
DOI： 10.1016/j.epsl.2023.118131 　

ISSN： 0012-821X
Magmatic System and Seismicity of the Arxan Volcanic Group in Northeast China Peer-reviewed

Jie Li, You Tian, Dapeng Zhao, Dong Yan, Zhiqiang Li, Hongli Li

Geophysical Research Letters　50　(6)　e2022GL101105　2023/03/13
Publisher: American Geophysical Union (AGU)
DOI： 10.1029/2022gl101105 　

ISSN： 0094-8276

eISSN： 1944-8007
Hot mantle upwelling and Mesozoic mineralization in Southeast China Peer-reviewed

Jiaji Xi, Guoming Jiang, Dapeng Zhao, Guibin Zhang, Lijuan She, Qingtian Lü, Danian Shi

Journal of Asian Earth Sciences　258　105648　2023/03
Publisher: Elsevier BV
DOI： 10.1016/j.jseaes.2023.105648 　

ISSN： 1367-9120
Seismic imaging of the Java subduction zone: New insight into arc volcanism and seismogenesis Peer-reviewed

Fan Xie, Zewei Wang, Dapeng Zhao, Rui Gao, Xiaofei Chen

Tectonophysics　854　229810　2023/03
Publisher: Elsevier BV
DOI： 10.1016/j.tecto.2023.229810 　

ISSN： 0040-1951
The Adriatic Thrust Fault of the 2021 Seismic Sequence Estimated from Accurate Earthquake Locations Using sP Depth Phases Peer-reviewed

Raffaele Di Stefano, Maria Grazia Ciaccio, Paola Baccheschi, Dapeng Zhao

Bulletin of the Seismological Society of America　113　(1)　480-493　2023/01/26
Publisher: Seismological Society of America (SSA)
DOI： 10.1785/0120220111 　

ISSN： 0037-1106

eISSN： 1943-3573

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ABSTRACT An earthquake sequence occurred in the Central Adriatic region during March–June 2021. This sequence started on 27 March with a mainshock of moment magnitude (Mw) 5.2 occurring at 13:47 coordinated universal time (UTC). No foreshock was observed before this mainshock. The sequence lasted approximately three months, until the end of June 2021. Approximately 200 seismic events were recorded by the regional seismic network during this time, including four M ≥ 4.0 earthquakes. The 27 March 2021 earthquake was one of the strongest instrumentally recorded events in the area bounded approximately by the Ancona–Zadar line to the north and the Gargano–Dubrovnik line to the south. The mainshock originated at a focal depth of 9.9 km. The seismicity spread from the mainshock up-dip and down-dip along a northeast-dipping plane. Here, we investigate the geometry of the fault activated by this seismic sequence by using sP depth phases. We aim to significantly reduce the large uncertainties associated with the hypocentral locations of offshore earthquakes beneath the Adriatic Sea—an area that plays a fundamental role in the geodynamics of the Mediterranean. These refined earthquake locations also allow us to make inferences with regards to the seismotectonic context responsible for the analyzed seismicity, thus identifying a structure (here referred to as the Mid-Adriatic fault) consisting of a northwest–southeast-striking thrust fault with a ∼35° northeast-dipping plane. The use of depth-phase arrival times to constrain off-network event locations is of particular interest in Italy due to both the peculiar shape of the peninsula and the extreme scarcity of seafloor stations, the cost and management of which are very expensive and complex. Here, we present the first attempt to apply this off-network locating technique to the Italian offshore seismicity research with the aim of improving hazard estimations in these hard-to-monitor regions.
Seismic Anisotropy Tomography and Mantle Dynamics Peer-reviewed

Dapeng Zhao, Xin Liu, Zewei Wang, Tao Gou

Surveys in Geophysics　44　947-982　2023/01/16
Publisher: Springer Science and Business Media LLC
DOI： 10.1007/s10712-022-09764-7 　

ISSN： 0169-3298

eISSN： 1573-0956

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Abstract Seismic anisotropy tomography is the updated geophysical imaging technology that can reveal 3-D variations of both structural heterogeneity and seismic anisotropy, providing unique constraints on geodynamic processes in the Earth’s crust and mantle. Here we introduce recent advances in the theory and application of seismic anisotropy tomography, thanks to abundant and high-quality data sets recorded by dense seismic networks deployed in many regions in the past decades. Applications of the novel techniques led to new discoveries in the 3-D structure and dynamics of subduction zones and continental regions. The most significant findings are constraints on seismic anisotropy in the subducting slabs. Fast-velocity directions (FVDs) of azimuthal anisotropy in the slabs are generally trench-parallel, reflecting fossil lattice-preferred orientation of aligned anisotropic minerals and/or shape-preferred orientation due to transform faults produced at the mid-ocean ridge and intraslab hydrated faults formed at the outer-rise area near the oceanic trench. The slab deformation may play an important role in both mantle flow and intraslab fabric. Trench-parallel anisotropy in the forearc has been widely observed by shear-wave splitting measurements, which may result, at least partly, from the intraslab deformation due to outer-rise yielding of the incoming oceanic plate. In the mantle wedge beneath the volcanic front and back-arc areas, FVDs are trench-normal, reflecting subduction-driven corner flows. Trench-normal FVDs are also revealed in the subslab mantle, which may reflect asthenospheric shear deformation caused by the overlying slab subduction. Toroidal mantle flow is observed in and around a slab edge or slab window. Significant azimuthal and radial anisotropies occur in the big mantle wedge beneath East Asia, reflecting hot and wet upwelling flows as well as horizontal flows associated with deep subduction of the western Pacific plate and its stagnation in the mantle transition zone. The geodynamic processes in the big mantle wedge have caused craton destruction, back-arc spreading, and intraplate seismic and volcanic activities. Ductile flow in the middle-lower crust is clearly revealed as prominent seismic anisotropy beneath the Tibetan Plateau, which affects the generation of large crustal earthquakes and mountain buildings.
Slab morphology around the Philippine Sea: New insights from P‐wave mantle tomography Peer-reviewed

Lijuan She, Guibin Zhang, Guoming Jiang, Dapeng Zhao, Jiaji Xi, Qingtian Lü, Danian Shi

Journal of Geophysical Research: Solid Earth　128　(1)　e2022JB024757　2023/01/10
Publisher: American Geophysical Union (AGU)
DOI： 10.1029/2022jb024757 　

ISSN： 2169-9313

eISSN： 2169-9356
Older magma at Aso caldera than at Unzen stratovolcano in south west Japan as recorded through helium isotopes Peer-reviewed

Yuji Sano, Takanori Kagoshima, Maoliang Zhang, Naoto Takahata, Tetsuji Onoue, Tomo Shibata, Yoshiro Nishio, Ai-Ti Chen, Hyunwoo Lee, Tobias P. Fischer, Dapeng Zhao

Communications Earth & Environment　4　(1)　1-8　2023/01/04
Publisher: Springer Science and Business Media LLC
DOI： 10.1038/s43247-022-00649-6 　

eISSN： 2662-4435
Fine Structure of the Subducting Slab and the 2022 M7.4 Fukushima–Oki Intraslab Earthquake Peer-reviewed

Zewei Wang, Dapeng Zhao, Xiaofei Chen

Seismological Research Letters　94　(1)　17-25　2023/01/02
Publisher: Seismological Society of America (SSA)
DOI： 10.1785/0220220234 　

ISSN： 0895-0695

eISSN： 1938-2057

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Abstract The 16 March 2022 M 7.4 Fukushima–Oki earthquake is the largest one among forearc intraslab earthquakes in Japan since 2000. These subcoast events can cause severe damage to the local society because of their proximity to inhabited areas. However, their generating mechanism is still not clear. Here, we present 3D high-resolution seismic tomography of the source zone of four large intraslab events (M ≥7.0) during 2003–2022 in northeast Japan, which is obtained by inverting high-quality arrival-time data recorded at both onshore and offshore seismic stations. Aftershocks of the subcoast intraslab earthquakes are mainly distributed in gaps of high-velocity bodies with high Poisson’s ratio and at the upper ∼20 km depth of the subducting Pacific slab. Our results indicate that the four large intraslab events were caused by rupturing of buried hydrated faults that formed at the outer rise and dehydration embrittlement on the fault planes.
Robust Seismic Images of the Hawaiian Plume Peer-reviewed

Chuanwei Ye, Xin Liu, Dapeng Zhao, Shujuan Zhao

Geophysical Research Letters　49　(23)　e2022GL100707　2022/12/16
Publisher: American Geophysical Union (AGU)
DOI： 10.1029/2022gl100707 　

ISSN： 0094-8276

eISSN： 1944-8007
Seismic anisotropy tomography and mantle dynamics of central‐eastern USA Peer-reviewed

Xuran Liang, Dapeng Zhao, Yuanyuan Hua, Yi‐Gang Xu

Journal of Geophysical Research: Solid Earth　127　(12)　e2022JB025484　2022/11/25
Publisher: American Geophysical Union (AGU)
DOI： 10.1029/2022jb025484 　

ISSN： 2169-9313

eISSN： 2169-9356
Mantle tomography of central‐eastern USA: Influence of inversion volume size Peer-reviewed

Xuran Liang, Dapeng Zhao, Yuanyuan Hua, Yi‐Gang Xu

Journal of Geophysical Research: Solid Earth　127　(12)　e2022JB024782　2022/11/22
Publisher: American Geophysical Union (AGU)
DOI： 10.1029/2022jb024782 　

ISSN： 2169-9313

eISSN： 2169-9356
Whole‐Mantle Tomography of Southeast Asia: New Insight Into Plumes and Slabs Peer-reviewed

Genti Toyokuni, Dapeng Zhao, Kenkichi Kurata

Journal of Geophysical Research: Solid Earth　127　(11)　e2022JB024298　2022/11
Publisher: American Geophysical Union (AGU)
DOI： 10.1029/2022jb024298 　

ISSN： 2169-9313

eISSN： 2169-9356
Structural Heterogeneity of the Alaska‐Aleutian Forearc: Implications for Interplate Coupling and Seismogenic Behaviors Peer-reviewed

Tao Gou, Shaohong Xia, Zhouchuan Huang, Dapeng Zhao

Journal of Geophysical Research: Solid Earth　127　(11)　e2022JB024621　2022/11
Publisher: American Geophysical Union (AGU)
DOI： 10.1029/2022jb024621 　

ISSN： 2169-9313

eISSN： 2169-9356
Structure and dynamics of the Tonga subduction zone: New insight from P-wave anisotropic tomography Peer-reviewed

Zhiteng Yu, Dapeng Zhao, Jiabiao Li

Earth and Planetary Science Letters　598　117844　2022/11
Publisher: Elsevier BV
DOI： 10.1016/j.epsl.2022.117844 　

ISSN： 0012-821X
Thermal and rheological structure of lithosphere beneath Northeast China Peer-reviewed

Dong Yan, You Tian, Dapeng Zhao, Hongli Li

Tectonophysics　840　229560　2022/10/05
Publisher: Elsevier BV
DOI： 10.1016/j.tecto.2022.229560 　

ISSN： 0040-1951
Northeastward expansion of the Tibetan Plateau: Seismic anisotropy evidence from shear-wave splitting measurements Peer-reviewed

Bin Cheng, Yuan Liu, Yunpeng Dong, Dapeng Zhao, Zhao Yang, Guowei Zhang

Journal of Asian Earth Sciences　240　105430　2022/09
Publisher: Elsevier BV
DOI： 10.1016/j.jseaes.2022.105430 　

ISSN： 1367-9120
Seismotectonics of Mongolia and Baikal Rift Zone Controlled by Lithospheric Structures Peer-reviewed

Zhouchuan Huang, Dapeng Zhao

Geophysical Research Letters　49　(15)　2022/08/16
Publisher: American Geophysical Union (AGU)
DOI： 10.1029/2022gl099525 　

ISSN： 0094-8276

eISSN： 1944-8007
The Moho, slab and tomography of the East Japan forearc derived from seafloor S-net data Peer-reviewed

Dapeng Zhao, Yu Katayama, Genti Toyokuni

Tectonophysics　837　229452　2022/08
Publisher: Elsevier BV
DOI： 10.1016/j.tecto.2022.229452 　

ISSN： 0040-1951
Anatomy of large earthquakes in North China Peer-reviewed

Hongli Li, You Tian, Dapeng Zhao, Dong Yan

Journal of Asian Earth Sciences　237　105342　2022/07
Publisher: Elsevier BV
DOI： 10.1016/j.jseaes.2022.105342 　

ISSN： 1367-9120
Pn Anisotropic Tomography of Hainan Island and Surrounding Areas: New Insights Into the Hainan Mantle Plume Peer-reviewed

Hongbin Lu, Jianshe Lei, Dapeng Zhao, Yi‐Gang Xu, Changqing Sun, Xiaohui Hu

Journal of Geophysical Research: Solid Earth　127　(6)　e2021JB023609　2022/06
Publisher: American Geophysical Union (AGU)
DOI： 10.1029/2021jb023609 　

ISSN： 2169-9313

eISSN： 2169-9356
Subducting slabs, Hainan plume and intraplate volcanism in SE Asia: Insight from P-wave mantle tomography Peer-reviewed

Zewei Wang, Dapeng Zhao, Xiaofei Chen, Rui Gao

Tectonophysics　831　229329　2022/05/20

DOI： 10.1016/j.tecto.2022.229329 　

ISSN： 0040-1951
Complex patterns of mantle flow in eastern SE Asian subduction zones inferred from P-wave anisotropic tomography Peer-reviewed

Wei Wei, Dapeng Zhao, Weiqian Yu, Yaolin Shi

127　(4)　2022/04
Seismic Structure of the Caroline Plateau-Yap Trench Collision Zone Peer-reviewed

Jianke Fan, Hong Zheng, Dapeng Zhao, Dongdong Dong, Yongliang Bai, Cuilin Li, Zhengyi Zhang

Geophysical Research Letters　49　(6)　2022/03/28

DOI： 10.1029/2022GL098017 　

ISSN： 0094-8276

eISSN： 1944-8007
Continental Break-Up Under a Convergent Setting: Insights From P Wave Radial Anisotropy Tomography of the Woodlark Rift in Papua New Guinea Peer-reviewed

Youqiang Yu, Frederik Tilmann, Dapeng Zhao, Stephen S. Gao, Kelly H. Liu

Geophysical Research Letters　49　(5)　2022/03/16

DOI： 10.1029/2022GL098086 　

ISSN： 0094-8276

eISSN： 1944-8007
Seismogenic crustal structure affected by the Hainan mantle plume Peer-reviewed

Jiangnan Lin, Shaohong Xia, Xinyang Wang, Dapeng Zhao, Dawei Wang

Gondwana Research　103　23-36　2022/03

DOI： 10.1016/j.gr.2021.10.029 　

ISSN： 1342-937X
Crustal flow and fluids affected the 2021 M7.4 Maduo earthquake in Northeast Tibet Peer-reviewed

Ziqiang Yang, Dapeng Zhao, Yunpeng Dong, Bin Cheng

Journal of Asian Earth Sciences　225　105050　2022/03

DOI： 10.1016/j.jseaes.2021.105050 　

ISSN： 1367-9120
Structural control on the 2019 Ridgecrest earthquake from local seismic tomography Peer-reviewed

Ziqiang Yang, Dapeng Zhao, Bin Cheng, Yunpeng Dong

Physics of the Earth and Planetary Interiors　324　106853　2022/03

DOI： 10.1016/j.pepi.2022.106853 　

ISSN： 0031-9201
Oceanic plate subduction and continental extrusion in Sumatra: Insight from S-wave anisotropic tomography Peer-reviewed

Xiao Wang, Xin Liu, Dapeng Zhao, Bo Liu, Qingyu Qiao, Long Zhao, Xiaotong Wang

Earth and Planetary Science Letters　580　117388　2022/02/15

DOI： 10.1016/j.epsl.2022.117388 　

ISSN： 0012-821X
P-wave anisotropic tomography of NE China: insight into lithospheric deformation, mantle dynamics and intraplate volcanism Peer-reviewed

Ruo Jia, Dapeng Zhao, Jianping Wu

Geophysical Journal International　229　(2)　1372-1391　2022/02/12
Publisher: Oxford University Press (OUP)
DOI： 10.1093/gji/ggab516 　

ISSN： 0956-540X

eISSN： 1365-246X

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SUMMARY We determine robust 3-D P-wave anisotropic tomography of the crust and upper mantle beneath NE China using high-quality traveltime data of local earthquakes and teleseismic events recorded at 334 network and portable stations. In the upper crust, nearly E-W fast-velocity directions (FVDs) of azimuthal anisotropy are revealed in the central Songliao basin, which is surrounded by circular-shaped FVDs along the basin edges. The E-W FVDs may reflect microcracks or fractures in the upper crust, which are aligned under the control of regional tectonic stress. In the lower crust, low-velocity (low-V) anomalies with NE-SW FVDs exist along the Tanlu fault zone, which may reflect NE-SW trending ductile deformation or viscous flow along the fault zone. The FVDs are mainly NNW-SSE to N-S in the uppermost mantle beneath most of the study region, which may reflect fossil deformation of the mantle lithosphere caused by the Palaeo-Pacific plate subduction. High-velocity anomalies with NE-SW FVDs are revealed at ∼100 km depth directly beneath the Great XingAn Mountain, which may reflect an old lithospheric remnant. In the deep upper mantle, the FVDs are mostly NW-SE, consistent with SKS splitting measurements, which may be closely related to the intermittently retreating stagnant Pacific slab beneath East Asia. Under the Changbai and other intraplate volcanoes in NE China, prominent low-V anomalies exist in the big mantle wedge (BMW) above the slab in the mantle transition zone, suggesting that these volcanoes are caused by hot and wet upwelling flows in the BMW closely associated with the deep subduction and dehydration of the western Pacific plate.
Azimuthal Anisotropy Tomography of the Southeast Asia Subduction System Peer-reviewed

Yuanyuan Hua, Dapeng Zhao, Yi Gang Xu

Journal of Geophysical Research: Solid Earth　127　(2)　2022/02

DOI： 10.1029/2021JB022854 　

ISSN： 2169-9313

eISSN： 2169-9356
Anisotropic Tomography and Dynamics of the Big Mantle Wedge Peer-reviewed

Xuran Liang, Dapeng Zhao, Yi-Gang Xu, Yuanyuan Hua

Geophysical Research Letters　49　(2)　1-10　2022/02

DOI： 10.1029/2021GL097550 　

ISSN： 0094-8276

eISSN： 1944-8007
Seismic Anisotropy and Intraslab Hydrated Faults Beneath the NE Japan Forearc Peer-reviewed

Zewei Wang, Dapeng Zhao, Xiaofei Chen

Geophysical Research Letters　49　(2)　e2021GL097266　2022/01/28
Publisher: American Geophysical Union (AGU)
DOI： 10.1029/2021gl097266 　

ISSN： 0094-8276

eISSN： 1944-8007
Mantle structure and flow beneath the central-western US: Constraints from anisotropic tomography Peer-reviewed

Xinyang Wang, Dapeng Zhao, Shaohong Xia, Jiabiao Li

Tectonophysics　822　229180　2022/01/05

DOI： 10.1016/j.tecto.2021.229180 　

ISSN： 0040-1951
Pn Anisotropic Tomography of Northeast Asia: New Insight Into Subduction Dynamics and Volcanism Peer-reviewed

Mofei Du, Jianshe Lei, Dapeng Zhao, Hongbin Lu

Journal of Geophysical Research: Solid Earth　127　(1)　2022/01

DOI： 10.1029/2021JB023080 　

ISSN： 2169-9313

eISSN： 2169-9356
P-Wave Tomography for 3-D Radial and Azimuthal Anisotropy Beneath Greenland and Surrounding Regions Peer-reviewed

Genti Toyokuni, Dapeng Zhao

Earth and Space Science　8　(12)　2021/12

DOI： 10.1029/2021EA001800 　

eISSN： 2333-5084
Upper Mantle Structure Beneath Mariana: Insights From Rayleigh-Wave Anisotropic Tomography Peer-reviewed

Qingyu Qiao, Xin Liu, Dapeng Zhao, Sanzhong Li, Shujuan Zhao, Long Zhao, Xiao Wang

Geochemistry, Geophysics, Geosystems　22　(11)　2021/11

DOI： 10.1029/2021GC009902 　

eISSN： 1525-2027
Mapping the Pacific Slab Edge and Toroidal Mantle Flow Beneath Kamchatka Peer-reviewed

Long Zhao, Xin Liu, Dapeng Zhao, Xiao Wang, Qingyu Qiao

Journal of Geophysical Research: Solid Earth　126　(11)　2021/11

DOI： 10.1029/2021JB022518 　

ISSN： 2169-9313

eISSN： 2169-9356
Anisotropic tomography of the Cascadia subduction zone Peer-reviewed

Dapeng Zhao, Yuanyuan Hua

Physics of the Earth and Planetary Interiors　318　106767　2021/07
Publisher: Elsevier BV
DOI： 10.1016/j.pepi.2021.106767 　

ISSN： 0031-9201
Seismic Reflection Images of Possible Mantle-Fluid Conduits and Basal Erosion in the 2011 Tohoku Earthquake Rupture Area Peer-reviewed

J. Park, T. Tsuru, G. Fujie, E. Hondori, T. Kagoshima, N. Takahata, D. Zhao, Y. Sano

Frontiers in Earth Science　9　687382　2021/07

DOI： 10.3389/feart.2021.687382 　

eISSN： 2296-6463
Conditions of magma generation at the Me-akan volcano, northern Japan Peer-reviewed

Takeshi Kuritani, Eiichi Sato, Keiji Wada, Akiko Matsumoto, Mitsuhiro Nakagawa, Dapeng Zhao, Kenji Shimizu, Takayuki Ushikubo

Journal of Volcanology and Geothermal Research　417　107323　2021/06
Publisher: Elsevier BV
DOI： 10.1016/j.jvolgeores.2021.107323 　

ISSN： 0377-0273
Mantle Flow and Dynamics Beneath Central‐East China: New Insights From P‐Wave Anisotropic Tomography Peer-reviewed

Guoming Jiang, Guibin Zhang, Dapeng Zhao, Qingtian Lü, Danian Shi, Hongyi Li, Xinfu Li

Journal of Geophysical Research: Solid Earth　126　(5)　2021/05
Publisher: American Geophysical Union (AGU)
DOI： 10.1029/2020jb020070 　

ISSN： 2169-9313

eISSN： 2169-9356
Subslab heterogeneity and giant megathrust earthquakes Peer-reviewed

Jianke Fan, Dapeng Zhao

Nature Geoscience　14　(5)　349-353　2021/05
Publisher: Springer Science and Business Media LLC
DOI： 10.1038/s41561-021-00728-x 　

ISSN： 1752-0894

eISSN： 1752-0908
Structural control on the 2018 and 2019 Hualien earthquakes in Taiwan Peer-reviewed

Genti Toyokuni, Dapeng Zhao, Kate Huihsuan Chen

Physics of the Earth and Planetary Interiors　312　106673　2021/03
Publisher: Elsevier BV
DOI： 10.1016/j.pepi.2021.106673 　

ISSN： 0031-9201
Seismic structure and subduction dynamics of the western Japan arc Peer-reviewed

Dapeng Zhao, Jian Wang, Zhouchuan Huang, Xin Liu

Tectonophysics　802　228743　2021/03
Publisher: Elsevier BV
DOI： 10.1016/j.tecto.2021.228743 　

ISSN： 0040-1951
Seismic imaging of Northwest Pacific and East Asia: New insight into volcanism, seismogenesis and geodynamics Invited Peer-reviewed

Dapeng Zhao

Earth-Science Reviews　214　103507　2021/03
Publisher: Elsevier BV
DOI： 10.1016/j.earscirev.2021.103507 　

ISSN： 0012-8252
Seismic evidence for a plume-modified oceanic lithosphere–asthenosphere system beneath Cape Verde Peer-reviewed

Xin Liu, Dapeng Zhao

Geophysical Journal International　225　(2)　872-886　2021/02/15
Publisher: Oxford University Press (OUP)
DOI： 10.1093/gji/ggab012 　

ISSN： 0956-540X

eISSN： 1365-246X

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<title>SUMMARY</title> We determine a new 3-D shear wave velocity (Vs) model down to 400 km depth beneath the Cape Verde hotspot that is far from plate boundaries. This Vs model is obtained by using a new method of jointly inverting P- and S-wave receiver functions, Rayleigh-wave phase-velocity data and S-wave arrival times of teleseismic events. Two Vs discontinuities at ∼15 and ∼60 km depths are revealed beneath volcanic islands, which are interpreted as the Moho discontinuity and the Gutenberg (G) discontinuity. Between the north and south islands, obvious high-Vs anomalies exist in the uppermost mantle down to a depth of ∼100–150 km beneath the Atlantic Ocean, whereas obvious low-Vs anomalies exist in the uppermost mantle beneath the volcanic islands including the active Fogo volcano. These low-Vs anomalies merge into a significant column-like low-Vs zone at depths of ∼150–400 km beneath the Cape Verde swell. We propose that these features in the upper mantle reflect a plume-modified oceanic lithosphere–asthenosphere system beneath the Cape Verde hotspot.
Deep mantle structure and origin of Cenozoic intraplate volcanoes in Indochina, Hainan and South China Sea Peer-reviewed

Dapeng Zhao, Genti Toyokuni, Kenkichi Kurata

Geophysical Journal International　225　(1)　572-588　2021/02/14
Publisher: Oxford University Press (OUP)
DOI： 10.1093/gji/ggaa605 　

ISSN： 0956-540X

eISSN： 1365-246X

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<title>SUMMARY</title> Cenozoic basalts with ages ranging from 28.5 to &lt; 0.1 Ma are widely distributed in the Indochina block, the South China Sea basin and the Leiqiong area in South China including the Leizhou Peninsula and the northern Hainan Island, which form the southeastern Asian basalt province (SABP). These Cenozoic basalts share common petrological and geochemical characteristics. However, the origin of the Cenozoic intraplate volcanism in the SABP is still a controversial issue. In this work, we apply a novel technique of multiscale global tomography to study the whole-mantle 3-D P-wave velocity (Vp) structure beneath the SABP. Our results show that low-Vp anomalies prevail in the whole mantle beneath the SABP. Although the strongest low-Vp zones exist beneath Hainan, significant low-Vp anomalies are also visible in the mantle beneath other parts of the SABP. These low-Vp anomalies appear somehow independent, rather than deriving from a single plume. We deem that a cluster of plumes rather than a single plume existed in the Cenozoic and may still exist now in the mantle beneath the SABP, though the Hainan plume may be the strongest one. A geochemical study suggested that the Hainan plume upwelling might be slowing down and close to exhausting its source zone. This geochemical inference is supported by our tomographic images showing that the low-Vp zones under Hainan are weak and intermittent in the lower mantle (∼700–2889 km depths). The low-Vp zones in the mantle beneath other SABP Cenozoic volcanoes are also weak, suggesting that those mantle plumes, if any, are also dying or already dead. As compared with a strong single plume, each member in a plume cluster should be small and weak, and so hard to exist long. The SABP is surrounded by subduction zones. The hot mantle upwelling beneath the SABP might be caused by collapsing of subducted slabs down to the lowermost mantle.
Upper Mantle Heterogeneity and Radial Anisotropy Beneath the Western Tibetan Plateau Peer-reviewed

Heng Zhang, Dapeng Zhao, Junmeng Zhao, Yunyue Elita Li, Hongbing Liu, Min Ding, Yong Jiang, Xin Xu

Tectonics　40　(2)　2021/02
Publisher: American Geophysical Union (AGU)
DOI： 10.1029/2020tc006403 　

ISSN： 0278-7407

eISSN： 1944-9194
Cracks and fluids in the Northeast Tibetan crust: New insight into seismotectonics Peer-reviewed

Anhui Sun, Dapeng Zhao, Huili Guo

Physics of the Earth and Planetary Interiors　311　106634　2021/02
Publisher: Elsevier BV
DOI： 10.1016/j.pepi.2020.106634 　

ISSN： 0031-9201
P‐wave Tomography and Azimuthal Anisotropy of the Manila‐Taiwan‐Southern Ryukyu Region Peer-reviewed

Jianke Fan, Dapeng Zhao

Tectonics　40　(2)　2021/02
Publisher: American Geophysical Union (AGU)
DOI： 10.1029/2020tc006262 　

ISSN： 0278-7407

eISSN： 1944-9194
Deep structure beneath the southwestern flank of the Baikal rift zone and adjacent areas Peer-reviewed

Hanting Wu, Zhouchuan Huang, Dapeng Zhao

Physics of the Earth and Planetary Interiors　310　106616　2021/01
Publisher: Elsevier BV
DOI： 10.1016/j.pepi.2020.106616 　

ISSN： 0031-9201
3D anisotropic structure of the Japan subduction zone Peer-reviewed

Zewei Wang, Dapeng Zhao

Science Advances　7　(4)　eabc9620　2021/01
Publisher: American Association for the Advancement of Science (AAAS)
DOI： 10.1126/sciadv.abc9620 　

eISSN： 2375-2548

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How mantle materials flow and how intraslab fabrics align in subduction zones are two essential issues for clarifying material recycling between Earth’s interior and surface. Investigating seismic anisotropy is one of a few viable technologies that can directly answer these questions. However, the detailed anisotropic structure of subduction zones is still unclear. Under a general hexagonal symmetry anisotropy assumption, we develop a tomographic method to determine a high-resolution three-dimensional (3D) <italic>P</italic> wave anisotropic model of the Japan subduction zone by inverting 1,184,018 travel time data of local and teleseismic events. As a result, the 3D anisotropic structure in and around the dipping Pacific slab is firstly revealed. Our results show that slab deformation plays an important role in both mantle flow and intraslab fabric, and the widely observed trench-parallel anisotropy in the forearc is related to the intraslab deformation during the outer-rise yielding of the subducting plate.
Groundwater Anomaly Related to CCS-CO2 Injection and the 2018 Hokkaido Eastern Iburi Earthquake in Japan Peer-reviewed

Yuji Sano, Takanori Kagoshima, Naoto Takahata, Kotaro Shirai, Jin-Oh Park, Glen T. Snyder, Tomo Shibata, Junji Yamamoto, Yoshiro Nishio, Ai-Ti Chen, Sheng Xu, Dapeng Zhao, Daniele L. Pinti

Frontiers in Earth Science　8　2020/12/10

DOI： 10.3389/feart.2020.611010 　

eISSN： 2296-6463
Isotropic and Anisotropic P Wave Velocity Structures of the Crust and Uppermost Mantle Beneath Turkey Peer-reviewed

Haibo Wang, Zhouchuan Huang, Tuna Eken, Derya Keleş, Tulay Kaya‐Eken, Judith M. Confal, Ceyhun Erman, Seda Yolsal‐Çevikbilen, Dapeng Zhao, Tuncay Taymaz

Journal of Geophysical Research: Solid Earth　125　(12)　2020/12
Publisher: American Geophysical Union (AGU)
DOI： 10.1029/2020jb019566 　

ISSN： 2169-9313

eISSN： 2169-9356
P Wave Tomography Beneath Greenland and Surrounding Regions: 2. Lower Mantle Peer-reviewed

Genti Toyokuni, Takaya Matsuno, Dapeng Zhao

Journal of Geophysical Research: Solid Earth　125　(12)　2020/12
Publisher: American Geophysical Union (AGU)
DOI： 10.1029/2020jb019839 　

ISSN： 2169-9313

eISSN： 2169-9356
P Wave Tomography Beneath Greenland and Surrounding Regions: 1. Crust and Upper Mantle Peer-reviewed

Genti Toyokuni, Takaya Matsuno, Dapeng Zhao

Journal of Geophysical Research: Solid Earth　125　(12)　2020/12
Publisher: American Geophysical Union (AGU)
DOI： 10.1029/2020jb019837 　

ISSN： 2169-9313

eISSN： 2169-9356
Tomography of the source zone of the great 2011 Tohoku earthquake Peer-reviewed

Yuanyuan Hua, Dapeng Zhao, Genti Toyokuni, Yixian Xu

Nature Communications　11　(1)　2020/12
Publisher: Springer Science and Business Media LLC
DOI： 10.1038/s41467-020-14745-8 　

eISSN： 2041-1723

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<title>Abstract</title>The mechanism and rupture process of the giant 2011 Tohoku-oki earthquake (Mw 9.0) are still poorly understood due to lack of permanent near-field observations. Using seismic arrival times recorded by dense seismograph networks on land and at ocean floor, we determine a detailed seismic tomography model of the megathrust zone beneath the Tohoku forearc. Our results show that the coseismic slip of the 2011 Tohoku-oki earthquake initiated at a boundary between a down-dip high-velocity anomaly and an up-dip low-velocity anomaly. The slow anomaly at shallow depths near the Japan trench may reflect low-rigidity materials that are close to the free surface, resulting in large slip and weak high-frequency radiation. Our new tomographic model can account for not only large slip near the trench but also weak high-frequency radiation from the shallow rupture areas.
Anisotropic Tomography Beneath Northeast Tibet: Evidence for Regional Crustal Flow Peer-reviewed

Anhui Sun, Dapeng Zhao

Tectonics　39　(7)　2020/07
Publisher: American Geophysical Union (AGU)
DOI： 10.1029/2020tc006161 　

ISSN： 0278-7407

eISSN： 1944-9194
Upper Mantle Deformation of the Terror Rift and Northern Transantarctic Mountains in Antarctica: Insight From P Wave Anisotropic Tomography Peer-reviewed

Heng Zhang, Dapeng Zhao, Changhui Ju, Yunyue Elita Li, Guohui Li, Min Ding, Shuze Chen, Junmeng Zhao

Geophysical Research Letters　47　(9)　2020/05/16
Publisher: American Geophysical Union (AGU)
DOI： 10.1029/2019gl086511 　

ISSN： 0094-8276

eISSN： 1944-8007
A new method to estimate ocean-bottom-seismometer orientation using teleseismic receiver functions Peer-reviewed

Hong Zheng, Jianke Fan, Dapeng Zhao, Cuilin Li, Dongdong Dong, Guangxu Zhang, Xiujuan Wang

Geophysical Journal International　221　(2)　893-904　2020/05/01
Publisher: Oxford University Press (OUP)
DOI： 10.1093/gji/ggaa041 　

ISSN： 0956-540X

eISSN： 1365-246X

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<title>SUMMARY</title> The orientation of an ocean-bottom-seismometer (OBS) is a critical parameter for analysing three-component seismograms, but it is difficult to estimate because of the uncontrollable OBS posture after its deployment. In this study, we develop a new and effective method to estimate the OBS orientation by fitting the amplitude of direct P wave of teleseismic receiver functions. The reliability of this method is verified using synthetic data and observed waveforms recorded at land seismic stations in Shandong Province, China. Our extensive synthetic tests show that our new method is little affected by a thin sedimentary layer that has a low S-wave velocity. The orientations of OBS stations that we deployed in the Yap subduction zone in the Western Pacific Ocean are estimated and corrected using our new method. After the correction, the direct P waves of teleseismic receiver functions show very good consistency. The effects of white and coloured noise in different levels, epicentral distance and backazimuth are also investigated, and the results show that these factors have small effects on the new method. We also examine the effect of sensor tilting on estimation of the OBS orientation, and find that a tilting correction should be made before the misorientation correction. We compare the OBS orientations determined with the new method and other methods and find that they are generally consistent with each other. We also discuss advantages and shortcomings of various methods, and think that our new method is more robust than the existing methods.
Seismogenic structure in the source zone of the 1918 M7.5 NanAo earthquake in the northern South China Sea Peer-reviewed

Shaohong Xia, Pengxiang Zhou, Dapeng Zhao, Jinghe Cao

Physics of the Earth and Planetary Interiors　302　106472　2020/05
Publisher: Elsevier BV
DOI： 10.1016/j.pepi.2020.106472 　

ISSN： 0031-9201
Seismic Evidence for Water Transportation in the Forearc off Northern Japan Peer-reviewed

Zhiteng Yu, Dapeng Zhao

Journal of Geophysical Research: Solid Earth　125　(4)　2020/04
Publisher: American Geophysical Union (AGU)
DOI： 10.1029/2019jb018600 　

ISSN： 2169-9313

eISSN： 2169-9356
SKS Splitting Measurements in NE China: New Insights Into the Wudalianchi Intraplate Volcanism and Mantle Dynamics Peer-reviewed

Mingwen Lu, Jianshe Lei, Dapeng Zhao, Yinshuang Ai, Xiwei Xu, Guibin Zhang

Journal of Geophysical Research: Solid Earth　125　(3)　2020/03
Publisher: American Geophysical Union (AGU)
DOI： 10.1029/2019jb018575 　

ISSN： 2169-9313

eISSN： 2169-9356
Structural Heterogeneity in Source Zones of the 2018 Anchorage Intraslab Earthquake and the 1964 Alaska Megathrust Earthquake Peer-reviewed

Tao Gou, Dapeng Zhao, Zhouchuan Huang, Liangshu Wang

Geochemistry, Geophysics, Geosystems　21　(3)　2020/03
Publisher: American Geophysical Union (AGU)
DOI： 10.1029/2019gc008812 　

ISSN： 1525-2027

eISSN： 1525-2027
Foundered lithospheric segments dropped into the mantle transition zone beneath southern California, USA Peer-reviewed

Youqiang Yu, Stephen S. Gao, Kelly H. Liu, Dapeng Zhao

Geology　48　(2)　200-204　2020/02/01
Publisher: Geological Society of America
DOI： 10.1130/g46889.1 　

ISSN： 0091-7613

eISSN： 1943-2682

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<title>Abstract</title>The diverse range of active tectonics occurring in southern California, USA, offers an opportunity to explore processes of continental deformation and modification in response to the instability of the Pacific and Farallon plates. Here, we present a high-resolution receiver-function image of the mantle transition zone (MTZ). Our result reveals significant lateral heterogeneities in the deep mantle beneath southern California. Both seismic tomography and MTZ discontinuity deflections reveal foundered lithospheric segments that have dropped into the MTZ beneath the western Transverse Ranges, the Peninsular Ranges, and part of the southern Sierra Nevada. Water dehydrated from these foundered materials may contribute to the observed MTZ thickening. Our observations, combined with previous tomography and geochemical results, indicate that lithospheric foundering of fossil arc roots provides a way for geochemical heterogeneities to be recycled into the underlying mantle, and suggest that the foundered materials can play a significant role in inducing lateral variations of MTZ structure.
Upper mantle tomography of the Western Junggar: Implications for its geodynamic evolution Peer-reviewed

Yuanyuan Hua, Yixian Xu, Dapeng Zhao, Rong Huang, Xiaohuan Jiang

Physics of the Earth and Planetary Interiors　299　106405　2020/02
Publisher: Elsevier BV
DOI： 10.1016/j.pepi.2019.106405 　

ISSN： 0031-9201
Mantle Structure and Flow Beneath an Early‐Stage Continental Rift: Constraints From P Wave Anisotropic Tomography Peer-reviewed

Youqiang Yu, Stephen S. Gao, Dapeng Zhao, Kelly H. Liu

Tectonics　39　(2)　2020/02
Publisher: American Geophysical Union (AGU)
DOI： 10.1029/2019tc005590 　

ISSN： 0278-7407

eISSN： 1944-9194
P-wave upper-mantle tomography of the Tanlu fault zone in eastern China Peer-reviewed

Jianshe Lei, Dapeng Zhao, Xiwei Xu, Mofei Du, Qi Mi, Mingwen Lu

Physics of the Earth and Planetary Interiors　299　106402　2020/02
Publisher: Elsevier BV
DOI： 10.1016/j.pepi.2019.106402 　

ISSN： 0031-9201
Intraplate volcanism and mantle dynamics of Mainland China: New constraints from shear-wave tomography Peer-reviewed

Wei Wei, Dapeng Zhao

Journal of Asian Earth Sciences　188　104103　2020/02
Publisher: Elsevier BV
DOI： 10.1016/j.jseaes.2019.104103 　

ISSN： 1367-9120
Structural heterogeneity and megathrust earthquakes in Southwest Japan Peer-reviewed

Xiongwei Niu, Dapeng Zhao, Yukio Isozaki, Yukihisa Nishizono, Hirohito Inakura

Physics of the Earth and Planetary Interiors　298　106347-106347　2020
Publisher: Elsevier BV
DOI： 10.1016/j.pepi.2019.106347 　

ISSN： 0031-9201
Arc-arc collision caused the 2018 Eastern Iburi earthquake (M 6.7) in Hokkaido, Japan Peer-reviewed

Yuanyuan Hua, Dapeng Zhao, Yixian Xu, Zewei Wang

Scientific Reports　9　(1)　2019/12
Publisher: Springer Science and Business Media LLC
DOI： 10.1038/s41598-019-50305-x 　

eISSN： 2045-2322

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<title>Abstract</title> Inland crustal earthquakes usually occur in the brittle upper crust (0–20 km depths), but the 6 September 2018 Eastern Iburi earthquake (M 6.7) took place in southern Hokkaido with a focal depth of ~37 km, causing 41 fatalities and serious damage to the local infrastructure. The reason why this event was so deep and its causal mechanism are still unclear. In this work we study the three-dimensional P and S wave seismic attenuation (1/Q) structure in the source zone of the 2018 Iburi earthquake. Our results show that this event occurred at the boundary between the Sorachi-Yezo belt (low Q) and the dipping Northeastern (NE) Japan arc (high Q) that is descending beneath the Kuril arc. The collision between the NE Japan and Kuril arcs as well as fluids from dehydration of the subducting Pacific plate caused this big event and its unusual focal depth. Similar attenuation structures are revealed in source zones of the 1970 Hidaka earthquake (M 6.7) and the 1982 Urakawa-oki earthquake (M 7.1), suggesting that they were caused by similar processes. We think that large earthquakes will take place again on the active thrust faults in southern Hokkaido in the coming decades. Hence, we should pay much attention to the seismic risk and prepare for reduction of earthquake hazards there.
Updated attenuation tomography of Japan subduction zone Peer-reviewed

Zewei Wang, Dapeng Zhao

Geophysical Journal International　219　(3)　1679-1697　2019/12/01
Publisher: Oxford University Press (OUP)
DOI： 10.1093/gji/ggz339 　

ISSN： 0956-540X

eISSN： 1365-246X

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<title>SUMMARY</title> We determine an updated model of P- and S-wave attenuation (Qp, Qs) tomography of the Japan subduction zone using an improved inversion scheme, and derive the first Qp/Qs model of the study region. We establish a system of observation t* equations by taking 1/Q values at 3-D grid nodes arranged in the study volume as unknown parameters. This scheme can eliminate model errors caused by ignoring high-order terms of the Taylor expansion in the Q-format scheme adopted by previous studies. The inversion problem is considered as a quadratic programming problem with bound constraints for best fitting the observed t* data in a least-squares sense. The 3-D attenuation model is obtained by using a limited-memory Broyden–Fletcher–Goldfarb–Shanno algorithm for bound constrained optimization. Because this inversion scheme uses bound constraints to avoid negative Q values, damping regularization is not needed, hence the ranges of Qp and Qs values obtained are less affected by human subjectivity. The subducting Pacific and Philippine Sea slabs exhibit high-Q and high Qp/Qs, whereas the mantle wedge beneath the volcanic front and back-arc area shows low-Q and low Qp/Qs. Both Qp and Qs vary in a range of 10–2000, and the Qp/Qs ratio changes from 0.4 to 1.4. Our results reveal a narrow high-Qp/Qs belt that is coincident with the distribution of volcanic and non-volcanic low-frequency micro-earthquakes (M 0.0–2.5), which may reflect high water-saturation anomalies that are probably associated with slab-derived fluids and responsible for the generation of low-frequency micro-earthquakes.
Buoyant hydrous mantle plume from the mantle transition zone Peer-reviewed

Takeshi Kuritani, Qun Ke Xia, Jun Ichi Kimura, Jia Liu, Kenji Shimizu, Takayuki Ushikubo, Dapeng Zhao, Mitsuhiro Nakagawa, Shumpei Yoshimura

Scientific Reports　9　(1)　2019/12/01

DOI： 10.1038/s41598-019-43103-y 　

eISSN： 2045-2322
Importance of later phases in seismic tomography Peer-reviewed

Dapeng Zhao

Physics of the Earth and Planetary Interiors　296　106314　2019/11
Publisher: Elsevier BV
DOI： 10.1016/j.pepi.2019.106314 　

ISSN： 0031-9201
P and S Wave Tomography Beneath the SE Tibetan Plateau: Evidence for Lithospheric Delamination Peer-reviewed

Zhouchuan Huang, Liangshu Wang, Mingjie Xu, Dapeng Zhao, Ning Mi, Dayong Yu

Journal of Geophysical Research: Solid Earth　124　(10)　10292-10308　2019/10
Publisher: American Geophysical Union (AGU)
DOI： 10.1029/2019jb017430 　

ISSN： 2169-9313

eISSN： 2169-9356
Mantle Dynamics of the Eastern Mediterranean and Middle East: Constraints From P‐Wave Anisotropic Tomography Peer-reviewed

Wei Wei, Dapeng Zhao, Feixiang Wei, Xiang Bai, Jiandong Xu

Geochemistry, Geophysics, Geosystems　20　(10)　4505-4530　2019/10
Publisher: American Geophysical Union (AGU)
DOI： 10.1029/2019gc008512 　

ISSN： 1525-2027

eISSN： 1525-2027
Mapping P-wave azimuthal anisotropy of the New Madrid seismic zone Peer-reviewed

Zewei Wang, Dapeng Zhao

Physics of the Earth and Planetary Interiors　295　106296　2019/10
Publisher: Elsevier BV
DOI： 10.1016/j.pepi.2019.106296 　

ISSN： 0031-9201
Upper mantle temperature structure of the North China Craton Peer-reviewed

Dong Yan, You Tian, Dapeng Zhao, Cai Liu, Hongxiang Zhu, Honghao Li

Physics of the Earth and Planetary Interiors　293　106269　2019/08
Publisher: Elsevier BV
DOI： 10.1016/j.pepi.2019.106269 　

ISSN： 0031-9201
Tomography, Seismotectonics, and Mantle Dynamics of Central and Eastern United States Peer-reviewed

Haibo Wang, Dapeng Zhao, Zhouchuan Huang, Liangshu Wang

Journal of Geophysical Research: Solid Earth　124　(8)　8890-8907　2019/08
Publisher: American Geophysical Union (AGU)
DOI： 10.1029/2019jb017478 　

ISSN： 2169-9313

eISSN： 2169-9356
Seismic Anisotropy Evidence for Ductile Deformation of the Forearc Lithospheric Mantle in Subduction Zones Peer-reviewed

Jian Wang, Xiaoge Huang, Dapeng Zhao, Zhenxing Yao

Journal of Geophysical Research: Solid Earth　124　(7)　7013-7027　2019/07
Publisher: American Geophysical Union (AGU)
DOI： 10.1029/2018jb016912 　

ISSN： 2169-9313

eISSN： 2169-9356
Deep Learning for Picking Seismic Arrival Times Peer-reviewed

Jian Wang, Zhuowei Xiao, Chang Liu, Dapeng Zhao, Zhenxing Yao

Journal of Geophysical Research: Solid Earth　124　(7)　6612-6624　2019/07
Publisher: American Geophysical Union (AGU)
DOI： 10.1029/2019jb017536 　

ISSN： 2169-9313

eISSN： 2169-9356
Mantle Dynamics of Western Pacific and East Asia: New Insights from P Wave Anisotropic Tomography Peer-reviewed

Jincheng Ma, You Tian, Dapeng Zhao, Cai Liu, Tingting Liu

Geochemistry, Geophysics, Geosystems　20　(7)　3628-3658　2019/07
Publisher: American Geophysical Union (AGU)
DOI： 10.1029/2019gc008373 　

ISSN： 1525-2027

eISSN： 1525-2027
Structural Heterogeneity and Anisotropy in the Source Zone of the 2018 Eastern Iburi Earthquake in Hokkaido, Japan Peer-reviewed

Tao Gou, Zhouchuan Huang, Dapeng Zhao, Liangshu Wang

Journal of Geophysical Research: Solid Earth　124　(7)　7052-7066　2019/07
Publisher: American Geophysical Union (AGU)
DOI： 10.1029/2019jb017388 　

ISSN： 2169-9313

eISSN： 2169-9356
Is there a big mantle wedge under eastern Tibet? Peer-reviewed

Jianshe Lei, Dapeng Zhao, Xiwei Xu, Yi-Gang Xu, Mofei Du

Physics of the Earth and Planetary Interiors　292　100-113　2019/07
Publisher: Elsevier BV
DOI： 10.1016/j.pepi.2019.04.005 　

ISSN： 0031-9201
Complex subduction beneath the Tibetan plateau: A slab warping model Peer-reviewed

Zewei Wang, Dapeng Zhao, Rui Gao, Yuanyuan Hua

Physics of the Earth and Planetary Interiors　292　42-54　2019/07
Publisher: Elsevier BV
DOI： 10.1016/j.pepi.2019.04.007 　

ISSN： 0031-9201
Seismic Structure of the Changbai Intraplate Volcano in NE China From Joint Inversion of Ambient Noise and Receiver Functions Peer-reviewed

Hongxiang Zhu, You Tian, Dapeng Zhao, Honghao Li, Cai Liu

Journal of Geophysical Research: Solid Earth　124　(5)　4984-5002　2019/05
Publisher: American Geophysical Union (AGU)
DOI： 10.1029/2018jb016600 　

ISSN： 2169-9313

eISSN： 2169-9356
Stress Field in the 2016 Kumamoto Earthquake (M 7.3) Area Peer-reviewed

Zhiteng Yu, Dapeng Zhao, Jiabiao Li, Zhouchuan Huang, Yukihisa Nishizono, Hirohito Inakura

Journal of Geophysical Research: Solid Earth　124　(3)　2638-2652　2019/03
Publisher: American Geophysical Union (AGU)
DOI： 10.1029/2018jb017079 　

ISSN： 2169-9313

eISSN： 2169-9356
Aseismic Deep Slab and Mantle Flow Beneath Alaska: Insight From Anisotropic Tomography Peer-reviewed

Tao Gou, Dapeng Zhao, Zhouchuan Huang, Liangshu Wang

Journal of Geophysical Research: Solid Earth　124　(2)　1700-1724　2019/02
Publisher: American Geophysical Union (AGU)
DOI： 10.1029/2018jb016639 　

ISSN： 2169-9313

eISSN： 2169-9356
Crustal seismic imaging of Northeast Tibet using first and later phases of earthquakes and explosions Peer-reviewed

Anhui Sun, Dapeng Zhao, Yuan Gao, Qinjian Tian, Ning Liu

Geophysical Journal International　217　405-421　2019/01/16
Publisher: Oxford University Press (OUP)
DOI： 10.1093/gji/ggz031 　

ISSN： 0956-540X

eISSN： 1365-246X
P Wave Azimuthal Anisotropic Tomography in Northern Chile: Insight Into Deformation in the Subduction Zone Peer-reviewed

Zhouchuan Huang, Frederik Tilmann, Diana Comte, Dapeng Zhao

Journal of Geophysical Research: Solid Earth　124　(1)　742-765　2019/01
Publisher: American Geophysical Union (AGU)
DOI： 10.1029/2018jb016389 　

ISSN： 2169-9313

eISSN： 2169-9356
Seismic Evidence for a Mantle Transition Zone Origin of the Wudalianchi and Halaha Volcanoes in Northeast China Peer-reviewed

Wei Wei, James O. S. Hammond, Dapeng Zhao, Jiandong Xu, Qian Liu, Yaning Gu

Geochemistry, Geophysics, Geosystems　20　(1)　398-416　2019/01
Publisher: American Geophysical Union (AGU)
DOI： 10.1029/2018gc007663 　

ISSN： 1525-2027

eISSN： 1525-2027
P-wave anisotropic tomography of the central and southern Philippines Peer-reviewed

Jianke Fan, Dapeng Zhao

Physics of the Earth and Planetary Interiors　286　154-164　2019/01
Publisher: Elsevier BV
DOI： 10.1016/j.pepi.2018.12.001 　

ISSN： 0031-9201
Lunar Seismic Tomography and the Early Earth Peer-reviewed

ZHAO Dapeng, 丸山茂徳, 磯崎行雄

地学雑誌　127　(5)　619‐629(J‐STAGE)　2018/10

DOI： 10.5026/jgeography.127.619 　

ISSN： 0022-135X
Tomography of the 2016 Kumamoto earthquake area and the Beppu-Shimabara graben Peer-reviewed

Dapeng Zhao, Kei Yamashita, Genti Toyokuni

Scientific Reports　8　15488　2018/10
Deep structure of the Longmenshan fault zone and mechanism of the 2008 Wenchuan earthquake Peer-reviewed

Lei, J, D. Zhao, X. Xu, M. Du

Chinese Science Bulletin　63　1906-1916　2018/07
Is there a gap in the stagnant Pacific slab in the mantle transition zone under the Changbaishan volcano? Peer-reviewed

Lei, J, D. Zhao, Y. Xu, Q. Fan

Acta Petrologica Sinica　34　13-22　2018/07
Cenozoic lithospheric deformation in Northeast Asia and the rapidly-aging Pacific Plate Peer-reviewed

Ting Yang, Louis Moresi, Dapeng Zhao, Dan Sandiford, Joanne Whittaker

Earth and Planetary Science Letters　492　1-11　2018/06/15
Publisher: Elsevier B.V.
DOI： 10.1016/j.epsl.2018.03.057 　

ISSN： 0012-821X
Upper and lower plate controls on the great 2011 Tohoku-oki earthquake Peer-reviewed

Xin Liu, Dapeng Zhao

4　eaat4396　2018/06
Time-lapse seismic tomography of an underground mining zone Peer-reviewed

Zewei Wang, Xibing Li, Dapeng Zhao, Xueyi Shang, Longjun Dong

International Journal of Rock Mechanics and Mining Sciences　107　136-149　2018/05
Anisotropic 3-D Ray Tracing and Its Application to Japan Subduction Zone Peer-reviewed

Tao Gou, Dapeng Zhao, Zhouchuan Huang, Liangshu Wang

Journal of Geophysical Research: Solid Earth　123　(5)　4088-4108　2018/05/01
Publisher: Blackwell Publishing Ltd
DOI： 10.1029/2017JB015321 　

ISSN： 2169-9356 2169-9313
Crustal tomography of the 2016 Kumamoto earthquake area in West Japan using P and PmP data Peer-reviewed

Haibo Wang, Dapeng Zhao, Zhouchuan Huang, Mingjie Xu, Liangshu Wang, Y. Nishizono, H. Inakura

Geophysical Journal International　214　1151-1163　2018/04
Age of the Subducting Philippine Sea Slab and Mechanism of Low-Frequency Earthquakes Peer-reviewed

Yuanyuan Hua, Dapeng Zhao, Yixian Xu, Xin Liu

Geophysical Research Letters　45　(5)　2303-2310　2018/03/16
Publisher: Blackwell Publishing Ltd
DOI： 10.1002/2017GL076531 　

ISSN： 1944-8007 0094-8276
Seismic velocity structure, VP/VS ratio and anisotropy beneath Northeast Japan: implications for water migration in subduction zones

Jian Wang, Zhuowei Xiao, Dapeng Zhao, Zhenxing Yao

Acta Geophysica Sinica　61　(3)　832-844　2018/03/01
Publisher: Science Press
DOI： 10.6038/cjg2018L0621 　

ISSN： 0001-5733
Tottori earthquakes and Daisen volcano: Effects of fluids, slab melting and hot mantle upwelling Peer-reviewed

Dapeng Zhao, Xin Liu, Yuanyuan Hua

Earth and Planetary Science Letters　485　121-129　2018/03/01
Publisher: Elsevier B.V.
DOI： 10.1016/j.epsl.2017.12.040 　

ISSN： 0012-821X
Precise relocation of low-frequency earthquakes in Northeast Japan: New insight into arc magma and fluids Peer-reviewed

Xiongwei Niu, Dapeng Zhao, Jiabiao Li

Geophysical Journal International　212　(2)　1183-1200　2018/02/01
Publisher: Oxford University Press
DOI： 10.1093/gji/ggx445 　

ISSN： 1365-246X 0956-540X
Changes in Greenland ice bed conditions inferred from seismology Peer-reviewed

Toyokuni, G., Takenaka, H., Takagi, R., Kanao, M., Tsuboi, S., Tono, Y., Childs, D., Zhao, D.

Physics of the Earth and Planetary Interiors　277　81-98　2018

DOI： 10.1016/j.pepi.2017.10.010 　
Crustal plumbing system of post-rift magmatism in the northern margin of South China Sea: New insights from integrated seismology Peer-reviewed

Xia, S, F. Zhao, D. Zhao, C. Fan

Tectonophysics　744　227-238　2018
P-wave tomography of Northeast Asia: Constraints on the western Pacific plate subduction and mantle dynamics Peer-reviewed

Jincheng Ma, You Tian, Cai Liu, Dapeng Zhao, Xuan Feng, Hongxiang Zhu

Physics of the Earth and Planetary Interiors　274　105-126　2018/01/01
Publisher: Elsevier B.V.
DOI： 10.1016/j.pepi.2017.11.003 　

ISSN： 0031-9201
Spatiotemporal distribution of low-frequency earthquakes in Southwest Japan: Evidence for fluid migration and magmatic activity Peer-reviewed

Zhiteng Yu, Dapeng Zhao, Xiongwei Niu, Jiabiao Li

Journal of Asian Earth Sciences　151　148-172　2018/01/01
Publisher: Elsevier Ltd
DOI： 10.1016/j.jseaes.2017.10.033 　

ISSN： 1367-9120
Evolution of the southern segment of the Philippine Trench: Constraints from seismic tomography Peer-reviewed

Fan, J, D. Zhao

Geochem. Geophys. Geosyst.　2018
P-wave anisotropic tomography of the SE Tibetan Plateau: Evidence for the crustal and upper-mantle deformations Peer-reviewed

Huang, Z, L. Wang, M. Xu, D. Zhao

J. Geophys. Res.　2018
Lithospheric deformation and asthenospheric flow associated with the Isabella anomaly in Southern California Peer-reviewed

Yu, Y, D. Zhao

J. Geophys. Res.　2018
Formation of rifts in central Tibet: Insight from P-wave radial anisotropy Peer-reviewed

Zhang, H, Y. Li, D. Zhao, J. Zhao, H. Liu

J. Geophys. Res.　2018
Eclogitization of the subducted oceanic crust and its implications for the mechanism of slow earthquakes Peer-reviewed

Wang, X, D. Zhao, H. Suzuki, J. Li, A. Ruan

Geophys. Res. Lett.　44　12125-12132　2017/11
Internal Deformation of Lithosphere Beneath Central Tibet Peer-reviewed

Heng Zhang, Dapeng Zhao, Junmeng Zhao, Zhaoguo Hu

JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH　122　(9)　7329-7342　2017/09

DOI： 10.1002/2017JB014184 　

ISSN： 2169-9313

eISSN： 2169-9356
Depth-varying azimuthal anisotropy in the Tohoku subduction channel Peer-reviewed

Xin Liu, Dapeng Zhao

EARTH AND PLANETARY SCIENCE LETTERS　473　33-43　2017/09

DOI： 10.1016/j.epsl.2017.05.034 　

ISSN： 0012-821X

eISSN： 1385-013X
Big mantle wedge, anisotropy, slabs and earthquakes beneath the Japan Sea Peer-reviewed

Dapeng Zhao

PHYSICS OF THE EARTH AND PLANETARY INTERIORS　270　9-28　2017/09

DOI： 10.1016/j.pepi.2017.06.009 　

ISSN： 0031-9201

eISSN： 1872-7395
Seismic imaging of the Asian orogens and subduction zones Invited Peer-reviewed

Dapeng Zhao, Yukio Isozaki, Shigenori Maruyama

JOURNAL OF ASIAN EARTH SCIENCES　145　349-367　2017/09

DOI： 10.1016/j.jseaes.2017.06.016 　

ISSN： 1367-9120

eISSN： 1878-5786
P-wave tomography of subduction zones around the central Philippines and its geodynamic implications Peer-reviewed

Jianke Fan, Dapeng Zhao, Dongdong Dong, Guangxu Zhang

JOURNAL OF ASIAN EARTH SCIENCES　146　76-89　2017/09

DOI： 10.1016/j.jseaes.2017.05.015 　

ISSN： 1367-9120

eISSN： 1878-5786
Mantle transition zone discontinuities beneath the Tien Shan Peer-reviewed

Yu, Y, D. Zhao, J. Lei

Geophys. J. Int.　2017/07
P-wave anisotropy, mantle wedge flow and olivine fabrics beneath Japan Peer-reviewed

Xin Liu, Dapeng Zhao

Geophysical Journal International　210　1410-1431　2017/06/08
Seismic anisotropy evidence for dehydration embrittlement triggering intermediate-depth earthquakes Peer-reviewed

Jian Wang, Dapeng Zhao, Zhenxing Yao

SCIENTIFIC REPORTS　7　2017/06

DOI： 10.1038/s41598-017-02563-w 　

ISSN： 2045-2322
P wave anisotropic tomography of the Alps Peer-reviewed

Yuanyuan Hua, Dapeng Zhao, Yixian Xu

JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH　122　(6)　4509-4528　2017/06

DOI： 10.1002/2016JB013831 　

ISSN： 2169-9313

eISSN： 2169-9356
Seismic imaging of the crust and uppermost mantle beneath the Qilian Orogenic Belt and its geodynamic implications Peer-reviewed

Ziteng Ding, Bin Cheng, Yunpeng Dong, Dapeng Zhao

TECTONOPHYSICS　705　63-79　2017/05

DOI： 10.1016/j.tecto.2017.03.016 　

ISSN： 0040-1951

eISSN： 1879-3266
P and S wave attenuation tomography of the Japan subduction zone Peer-reviewed

Zewei Wang, Dapeng Zhao, Xin Liu, Chuanxu Chen, Xibing Li

GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS　18　(4)　1688-1710　2017/04

DOI： 10.1002/2017GC006800 　

ISSN： 1525-2027
Age of the subducting Pacific slab beneath East Asia and its geodynamic implications Peer-reviewed

Xin Liu, Dapeng Zhao, Sanzhong Li, Wei Wei

EARTH AND PLANETARY SCIENCE LETTERS　464　166-174　2017/04

DOI： 10.1016/j.epsl.2017.02.024 　

ISSN： 0012-821X

eISSN： 1385-013X
Seismic attenuation tomography of the source zone of the 2016 Kumamoto earthquake (M 7.3) Peer-reviewed

Zewei Wang, Dapeng Zhao, Xin Liu, Xibing Li

JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH　122　(4)　2988-3007　2017/04

DOI： 10.1002/2016JB013704 　

ISSN： 2169-9313

eISSN： 2169-9356
Tomography of the subducting Pacific slab and the 2015 Bonin deepest earthquake (Mw 7.9) Peer-reviewed

Dapeng Zhao, Moeto Fujisawa, Genti Toyokuni

SCIENTIFIC REPORTS　7　(44487)　2017/03

DOI： 10.1038/srep44487 　

ISSN： 2045-2322
Mantle structure beneath the incipient Okavango rift zone in southern Africa Peer-reviewed

Youqiang Yu, Kelly H. Liu, Zhouchuan Huang, Dapeng Zhao, Cory A. Reed, Moikwathai Moidaki, Jianshe Lei, Stephen S. Gao

GEOSPHERE　13　(1)　102-111　2017/02

DOI： 10.1130/GES01331.1 　

ISSN： 1553-040X
Mantle transition zone, stagnant slab and intraplate volcanism in Northeast Asia Peer-reviewed

Chen, C, D. Zhao, Y. Tian, S. Wu, A. Hasegawa, J. Lei, J. Park, I. Kang

Geophys. J. Inter　209　68-85　2017/01/05
Groundwater helium anomaly reflects strain change during the 2016 Kumamoto earthquake in Southwest Japan Peer-reviewed

Yuji Sano, Naoto Takahata, Takanori Kagoshima, Tomo Shibata, Tetsuji Onoue, Dapeng Zhao

SCIENTIFIC REPORTS　6　(37939)　2016/11

DOI： 10.1038/srep37939 　

ISSN： 2045-2322
Backarc spreading and mantle wedge flow beneath the Japan Sea: insight from Rayleigh-wave anisotropic tomography Peer-reviewed

Xin Liu, Dapeng Zhao

GEOPHYSICAL JOURNAL INTERNATIONAL　207　(1)　357-373　2016/10

DOI： 10.1093/gji/ggw288 　

ISSN： 0956-540X

eISSN： 1365-246X
Tomography of the source zone of the 2016 South Taiwan earthquake Peer-reviewed

Genti Toyokuni, Dapeng Zhao, Kate Huihsuan Chen

GEOPHYSICAL JOURNAL INTERNATIONAL　207　(1)　635-643　2016/10

DOI： 10.1093/gji/ggw304 　

ISSN： 0956-540X

eISSN： 1365-246X
Complex deformation in western Tibet revealed by anisotropic tomography Peer-reviewed

Heng Zhang, Junmeng Zhao, Dapeng Zhao, Chunquan Yu, Hongbing Liu, Zhaoguo Hu

EARTH AND PLANETARY SCIENCE LETTERS　451　97-107　2016/10

DOI： 10.1016/j.epsl.2016.07.020 　

ISSN： 0012-821X

eISSN： 1385-013X
The 2013 Wyoming upper mantle earthquakes: Tomography and tectonic implications Peer-reviewed

Xinyang Wang, Dapeng Zhao, Jiabiao Li

JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH　121　(9)　6797-6808　2016/09

DOI： 10.1002/2016JB013118 　

ISSN： 2169-9313

eISSN： 2169-9356
Teleseismic imaging of the mantle beneath southernmost China: New insights into the Hainan plume Peer-reviewed

Shaohong Xia, Dapeng Zhao, Jinlong Sun, Haibo Huang

GONDWANA RESEARCH　36　46-56　2016/08

DOI： 10.1016/j.gr.2016.05.003 　

ISSN： 1342-937X

eISSN： 1878-0571
Mantle transition zone structure beneath the Changbai volcano: Insight into deep slab dehydration and hot upwelling near the 410km discontinuity Peer-reviewed

You Tian, Hongxiang Zhu, Dapeng Zhao, Cai Liu, Xuan Feng, Ting Liu, Jincheng Ma

JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH　121　(8)　5794-5808　2016/08

DOI： 10.1002/2016JB012959 　

ISSN： 2169-9313

eISSN： 2169-9356
Seismic velocity azimuthal anisotropy of the Japan subduction zone: Constraints from P and S wave traveltimes Peer-reviewed

Xin Liu, Dapeng Zhao

JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH　121　(7)　5086-5115　2016/07

DOI： 10.1002/2016JB013116 　

ISSN： 2169-9313

eISSN： 2169-9356
Depth variations of P-wave azimuthal anisotropy beneath Mainland China Peer-reviewed

Wei Wei, Dapeng Zhao, Jiandong Xu, Bengang Zhou, Yaolin Shi

SCIENTIFIC REPORTS　6　(29614)　2016/07

DOI： 10.1038/srep29614 　

ISSN： 2045-2322
Crack mystery of the damaging Kumamoto earthquakes Peer-reviewed

Dapeng Zhao, Xin Liu

SCIENCE BULLETIN　61　(11)　868-870　2016/06

DOI： 10.1007/s11434-016-1100-4 　

ISSN： 2095-9273

eISSN： 2095-9281
Seismic anisotropy tomography: New insight into subduction dynamics Peer-reviewed

Dapeng Zhao, Sheng Yu, Xin Liu

GONDWANA RESEARCH　33　24-43　2016/05

DOI： 10.1016/j.gr.2015.05.008 　

ISSN： 1342-937X

eISSN： 1878-0571
Varying deformation patterns in central Tibet revealed by radial anisotropy tomography Peer-reviewed

Heng Zhang, Dapeng Zhao, Chunquan Yu, Junmeng Zhao

JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH　121　(5)　3445-3461　2016/05

DOI： 10.1002/2016JB012832 　

ISSN： 2169-9313

eISSN： 2169-9356
Teleseismic P-wave tomography and mantle dynamics beneath Eastern Tibet Peer-reviewed

Jianshe Lei, Dapeng Zhao

GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS　17　(5)　1861-1884　2016/05

DOI： 10.1002/2016GC006262 　

ISSN： 1525-2027
Tomography of the source zone of the 2015 M 7.8 Nepal earthquake Peer-reviewed

Wei Wei, Dapeng Zhao

PHYSICS OF THE EARTH AND PLANETARY INTERIORS　253　58-63　2016/04

DOI： 10.1016/j.pepi.2016.01.008 　

ISSN： 0031-9201

eISSN： 1872-7395
Imaging of magma intrusions beneath Harrat Al-Madinah in Saudi Arabia Peer-reviewed

Mohamed F. Abdelwahed, Nabil El-Marry, Mohamed Rashad Moufti, Catherine Lewis Kenedi, Dapeng Zhao, Hani Zahran, Jamal Shawali

JOURNAL OF ASIAN EARTH SCIENCES　120　17-28　2016/04

DOI： 10.1016/j.jseaes.2016.01.023 　

ISSN： 1367-9120

eISSN： 1878-5786
P wave azimuthal and radial anisotropy of the Hokkaido subduction zone Peer-reviewed

Xiongwei Niu, Dapeng Zhao, Jiabiao Li, Aiguo Ruan

JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH　121　(4)　2636-2660　2016/04

DOI： 10.1002/2015JB012651 　

ISSN： 2169-9313

eISSN： 2169-9356
Seismic tomography and anisotropy of the Helan-Liupan tectonic belt: Insight into lower crustal flow and seismotectonics Peer-reviewed

Bin Cheng, Dapeng Zhao, Shunyou Cheng, Ziteng Ding, Guowei Zhang

JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH　121　(4)　2608-2635　2016/04

DOI： 10.1002/2015JB012692 　

ISSN： 2169-9313

eISSN： 2169-9356
Large earthquakes and structural heterogeneity in Eastern Tibetan Plateau. Peer-reviewed

Lei, J, D. Zhao

AGU Book “Plate Boundaries and Natural Hazards”　pp.167-191　2016/03
P and S wave tomography of Japan subduction zone from joint inversions of local and teleseismic travel times and surface-wave data Peer-reviewed

Xin Liu, Dapeng Zhao

PHYSICS OF THE EARTH AND PLANETARY INTERIORS　252　1-22　2016/03

DOI： 10.1016/j.pepi.2016.01.002 　

ISSN： 0031-9201

eISSN： 1872-7395
Subduction of a buoyant plateau at the Manila Trench: Tomographic evidence and geodynamic implications Peer-reviewed

Jianke Fan, Dapeng Zhao, Dongdong Dong

GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS　17　(2)　571-586　2016/02

DOI： 10.1002/2015GC006201 　

ISSN： 1525-2027
Teleseismic shear wave tomography of the Japan subduction zone Peer-reviewed

Koichi Asamori, Dapeng Zhao

GEOPHYSICAL JOURNAL INTERNATIONAL　203　(3)　1752-1772　2015/12

DOI： 10.1093/gji/ggv334 　

ISSN： 0956-540X

eISSN： 1365-246X
A seismic transect across West Antarctica: Evidence for mantle thermal anomalies beneath the Bentley Subglacial Trench and the Marie Byrd Land Dome Peer-reviewed

Andrew J. Lloyd, Douglas A. Wiens, Andrew A. Nyblade, Sridhar Anandakrishnan, Richard C. Aster, Audrey D. Huerta, Terry J. Wilson, Ian W. D. Dalziel, Patrick J. Shore, Dapeng Zhao

JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH　120　(12)　8439-8460　2015/12

DOI： 10.1002/2015JB012455 　

ISSN： 2169-9313

eISSN： 2169-9356
Mantle dynamics and Cretaceous magmatism in east-central China: Insight from teleseismic tomograms Peer-reviewed

Guoming Jiang, Guibin Zhang, Dapeng Zhao, Qingtian Lu, Hongyi Li, Xinfu Li

TECTONOPHYSICS　664　256-268　2015/11

DOI： 10.1016/j.tecto.2015.09.019 　

ISSN： 0040-1951

eISSN： 1879-3266
Lateral variation of crustal structure and composition in the Cathaysia block of South China and its geodynamic implications Peer-reviewed

Shaohong Xia, Yusong Shen, Dapeng Zhao, Xuelin Qiu

JOURNAL OF ASIAN EARTH SCIENCES　109　20-28　2015/09

DOI： 10.1016/j.jseaes.2015.05.010 　

ISSN： 1367-9120

eISSN： 1878-5786
Interior structure of the Moon: Constraints from seismic tomography, gravity and topography Peer-reviewed

Bernhard Steinberger, Dapeng Zhao, Stephanie C. Werner

PHYSICS OF THE EARTH AND PLANETARY INTERIORS　245　26-39　2015/08

DOI： 10.1016/j.pepi.2015.05.005 　

ISSN： 0031-9201

eISSN： 1872-7395
Tomographic imaging of the underthrusting Indian slab and mantle upwelling beneath central Tibet Peer-reviewed

Heng Zhang, Dapeng Zhao, Junmeng Zhao, Hongbing Liu

GONDWANA RESEARCH　28　(1)　121-132　2015/08

DOI： 10.1016/j.gr.2014.02.012 　

ISSN： 1342-937X

eISSN： 1878-0571
P wave tomography and anisotropy beneath Southeast Asia: Insight into mantle dynamics Peer-reviewed

Zhouchuan Huang, Dapeng Zhao, Liangshu Wang

JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH　120　(7)　5154-5174　2015/07

DOI： 10.1002/2015JB012098 　

ISSN： 2169-9313

eISSN： 2169-9356
On the trade-off between seismic anisotropy and heterogeneity: Numerical simulations and application to Northeast Japan Peer-reviewed

Zhouchuan Huang, Dapeng Zhao, Xin Liu

JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH　120　(5)　3255-3277　2015/05

DOI： 10.1002/2014JB011784 　

ISSN： 2169-9313

eISSN： 2169-9356
Seismic attenuation tomography of the Southwest Japan arc: new insight into subduction dynamics Peer-reviewed

Xin Liu, Dapeng Zhao

GEOPHYSICAL JOURNAL INTERNATIONAL　201　(1)　135-156　2015/04

DOI： 10.1093/gji/ggv007 　

ISSN： 0956-540X

eISSN： 1365-246X
Tomographic imaging of the Cascadia subduction zone: Constraints on the Juan de Fuca slab Peer-reviewed

Chuanxu Chen, Dapeng Zhao, Shiguo Wu

TECTONOPHYSICS　647　73-88　2015/04

DOI： 10.1016/j.tecto.2015.02.012 　

ISSN： 0040-1951

eISSN： 1879-3266
Recent advance in polar seismology: Global impact of the International Polar Year Peer-reviewed

Masaki Kanao, Dapeng Zhao, Douglas A. Wiens, Eleonore Stutzmann

POLAR SCIENCE　9　(1)　1-4　2015/03

DOI： 10.1016/j.polar.2014.12.003 　

ISSN： 1873-9652

eISSN： 1876-4428
P and S wave tomography and anisotropy in Northwest Pacific and East Asia: Constraints on stagnant slab and intraplate volcanism Peer-reviewed

Wei Wei, Dapeng Zhao, Jiandong Xu, Feixiang Wei, Guoming Liu

JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH　120　(3)　1642-1666　2015/03

DOI： 10.1002/2014JB011254 　

ISSN： 2169-9313

eISSN： 2169-9356
The 2011 Tohoku earthquake (Mw 9.0) sequence and subduction dynamics in Western Pacific and East Asia Peer-reviewed

Dapeng Zhao

JOURNAL OF ASIAN EARTH SCIENCES　98　26-49　2015/02

DOI： 10.1016/j.jseaes.2014.10.022 　

ISSN： 1367-9120

eISSN： 1878-5786
A water wall in the Tohoku forearc causing large crustal earthquakes Peer-reviewed

Dapeng Zhao, Hiroki Kitagawa, Genti Toyokuni

GEOPHYSICAL JOURNAL INTERNATIONAL　200　(1)　149-172　2015/01

DOI： 10.1093/gji/ggu381 　

ISSN： 0956-540X

eISSN： 1365-246X
Detection of metastable olivine wedge in the western Pacific slab and its geodynamic implications Peer-reviewed

Guoming Jiang, Dapeng Zhao, Guibin Zhang

PHYSICS OF THE EARTH AND PLANETARY INTERIORS　238　1-7　2015/01

DOI： 10.1016/j.pepi.2014.10.008 　

ISSN： 0031-9201

eISSN： 1872-7395
Structural control on the nucleation of megathrust earthquakes in the Nankai subduction zone Peer-reviewed

Xin Liu, Dapeng Zhao

GEOPHYSICAL RESEARCH LETTERS　41　(23)　8288-8293　2014/12

DOI： 10.1002/2014GL062002 　

ISSN： 0094-8276

eISSN： 1944-8007
Late Mesozoic magmatic plumbing system in the onshore-offshore area of Hong Kong: Insight from 3-D active-source seismic tomography Peer-reviewed

Shaohong Xia, Dapeng Zhao

JOURNAL OF ASIAN EARTH SCIENCES　96　46-58　2014/12

DOI： 10.1016/j.jseaes.2014.08.038 　

ISSN： 1367-9120

eISSN： 1878-5786
Genetic waveform modeling for the crustal structure in Northeast Japan Peer-reviewed

Mohamed F. Abdelwahed, Dapeng Zhao

JOURNAL OF ASIAN EARTH SCIENCES　89　66-75　2014/08

DOI： 10.1016/j.jseaes.2014.03.017 　

ISSN： 1367-9120

eISSN： 1878-5786
Structural control on the Tohoku earthquake rupture process investigated by 3D FEM, tsunami and geodetic data Peer-reviewed

F. Romano, E. Trasatti, S. Lorito, C. Piromallo, A. Piatanesi, Y. Ito, D. Zhao, K. Hirata, P. Lanucara, M. Cocco

SCIENTIFIC REPORTS　4　2014/07

DOI： 10.1038/srep05631 　

ISSN： 2045-2322
Three-dimensional P wave azimuthal anisotropy in the lithosphere beneath China Peer-reviewed

Zhouchuan Huang, Pan Wang, Dapeng Zhao, Liangshu Wang, Mingjie Xu

JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH　119　(7)　5686-5712　2014/07

DOI： 10.1002/2014JB010963 　

ISSN： 2169-9313

eISSN： 2169-9356
P wave radial anisotropy tomography of the upper mantle beneath the North China Craton Peer-reviewed

Jian Wang, Huohua Wu, Dapeng Zhao

GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS　15　(6)　2195-2210　2014/06

DOI： 10.1002/2014GC005279 　

ISSN： 1525-2027
Seismic structure of the Helan-Liupan-Ordos western margin tectonic belt in North-Central China and its geodynamic implications Peer-reviewed

Bin Cheng, Shunyou Cheng, Guowei Zhang, Dapeng Zhao

JOURNAL OF ASIAN EARTH SCIENCES　87　141-156　2014/06

DOI： 10.1016/j.jseaes.2014.01.006 　

ISSN： 1367-9120

eISSN： 1878-5786
P-wave tomography and dynamics of the crust and upper mantle beneath western Tibet Peer-reviewed

Junmeng Zhao, Dapeng Zhao, Heng Zhang, Hongbing Liu, Ying Huang, Honggang Cheng, Wei Wang

GONDWANA RESEARCH　25　(4)　1690-1699　2014/05

DOI： 10.1016/j.gr.2013.06.020 　

ISSN： 1342-937X

eISSN： 1878-0571
Crust and upper mantle structure of the New Madrid Seismic Zone: Insight into intraplate earthquakes Peer-reviewed

Chuanxu Chen, Dapeng Zhao, Shiguo Wu

PHYSICS OF THE EARTH AND PLANETARY INTERIORS　230　1-14　2014/05

DOI： 10.1016/j.pepi.2014.01.016 　

ISSN： 0031-9201

eISSN： 1872-7395
Seismic attenuation tomography of the Northeast Japan arc: Insight into the 2011 Tohoku earthquake ( Mw 9.0) and subduction dynamics Peer-reviewed

Xin Liu, Dapeng Zhao, Sanzhong Li

JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH　119　(2)　1094-1118　2014/02

DOI： 10.1002/2013JB010591 　

ISSN： 2169-9313

eISSN： 2169-9356
Seismic evidence for a mantle plume beneath the Cape Verde hotspot Peer-reviewed

Xin Liu, Dapeng Zhao

INTERNATIONAL GEOLOGY REVIEW　56　(10)　1213-1225　2014

DOI： 10.1080/00206814.2014.930720 　

ISSN： 0020-6814

eISSN： 1938-2839
Wave-equation-based travel-time seismic tomography-Part 1: Method Peer-reviewed

P. Tong, D. Zhao, D. Yang, X. Yang, J. Chen, Q. Liu

SOLID EARTH　5　(2)　1151-1168　2014

DOI： 10.5194/se-5-1151-2014 　

ISSN： 1869-9510

eISSN： 1869-9529
Wave-equation-based travel-time seismic tomography-Part 2: Application to the 1992 Landers earthquake (M-w 7.3) area Peer-reviewed

P. Tong, D. Zhao, D. Yang, X. Yang, J. Chen, Q. Liu

SOLID EARTH　5　(2)　1169-1188　2014

DOI： 10.5194/se-5-1169-2014 　

ISSN： 1869-9510

eISSN： 1869-9529
Complex slab structure and arc magmatism beneath the Japanese Islands Peer-reviewed

Hasegawa, A, J. Nakajima, T. Yanada, N. Uchida, T. Okada, D. Zhao, T. Matsuzawa, N. Umino

Journal of Asian Earth Sciences　78　277-290　2013/12

DOI： 10.1016/j.jseaes.2012.12.031 　

ISSN： 1367-9120
Mapping P-wave azimuthal anisotropy in the crust and upper mantle beneath the United States Peer-reviewed

Zhouchuan Huang, Dapeng Zhao

PHYSICS OF THE EARTH AND PLANETARY INTERIORS　225　28-40　2013/12

DOI： 10.1016/j.pepi.2013.10.003 　

ISSN： 0031-9201

eISSN： 1872-7395
Reactivation and mantle dynamics of North China Craton: insight from P-wave anisotropy tomography Peer-reviewed

You Tian, Dapeng Zhao

GEOPHYSICAL JOURNAL INTERNATIONAL　195　(3)　1796-1810　2013/12

DOI： 10.1093/gji/ggt333 　

ISSN： 0956-540X

eISSN： 1365-246X
Changbai intraplate volcanism and deep earthquakes in East Asia: a possible link? Peer-reviewed

Dapeng Zhao, You Tian

GEOPHYSICAL JOURNAL INTERNATIONAL　195　(2)　706-724　2013/11

DOI： 10.1093/gji/ggt289 　

ISSN： 0956-540X

eISSN： 1365-246X
Aseismic deep subduction of the Philippine Sea plate and slab window Peer-reviewed

Zhouchuan Huang, Dapeng Zhao, Akira Hasegawa, Norihito Umino, Jung-Ho Park, Ik-Bum Kang

JOURNAL OF ASIAN EARTH SCIENCES　75　82-94　2013/10

DOI： 10.1016/j.jseaes.2013.07.002 　

ISSN： 1367-9120
P-wave anisotropic tomography in Southeast Tibet: New insight into the lower crustal flow and seismotectonics Peer-reviewed

Wei Wei, Dapeng Zhao, Jiandong Xu

PHYSICS OF THE EARTH AND PLANETARY INTERIORS　222　47-57　2013/09

DOI： 10.1016/j.pepi.2013.07.002 　

ISSN： 0031-9201
Seismic heterogeneity and anisotropy of the southern Kuril arc: insight into megathrust earthquakes Peer-reviewed

Xin Liu, Dapeng Zhao, Sanzhong Li

GEOPHYSICAL JOURNAL INTERNATIONAL　194　(2)　1069-1090　2013/08

DOI： 10.1093/gji/ggt150 　

ISSN： 0956-540X

eISSN： 1365-246X
P-wave tomography for 3-D radial and azimuthal anisotropy of Tohoku and Kyushu subduction zones Peer-reviewed

Jian Wang, Dapeng Zhao

GEOPHYSICAL JOURNAL INTERNATIONAL　193　(3)　1166-1181　2013/06

DOI： 10.1093/gji/ggt086 　

ISSN： 0956-540X
The 2008 Iwate-Miyagi earthquake (M 7.2) and arc volcanism: Insight from irregular-grid tomography Peer-reviewed

Wei, W, D. Zhao

Earth Science Frontiers　20　(2)　155-171　2013/06
Upper mantle seismic structure beneath central East Antarctica from body wave tomography: Implications for the origin of the Gamburtsev Subglacial Mountains Peer-reviewed

Andrew J. Lloyd, Andrew A. Nyblade, Douglas A. Wiens, Patrick J. Shore, Samantha E. Hansen, Masaki Kanao, Dapeng Zhao

GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS　14　(4)　902-920　2013/04

DOI： 10.1002/ggge.20098 　

ISSN： 1525-2027
Towards Mapping the Three-Dimensional Distribution of Water in the Transition Zone from P-Velocity Tomography and 660-Km Discontinuity Depths

Daisuke Suetsugu, Toru Inoue, Akira Yamada, Dapeng Zhao, Masayuki Obayashi

Earth's Deep Water Cycle　237-249　2013/03/19
Publisher: Wiley Blackwell
DOI： 10.1029/168GM18 　
Seismic imaging of the Southwest Japan arc from the Nankai trough to the Japan Sea Peer-reviewed

Xin Liu, Dapeng Zhao, Sanzhong Li

PHYSICS OF THE EARTH AND PLANETARY INTERIORS　216　59-73　2013/03

DOI： 10.1016/j.pepi.2013.01.003 　

ISSN： 0031-9201

eISSN： 1872-7395
Global mantle heterogeneity and its influence on teleseismic regional tomography Peer-reviewed

Dapeng Zhao, Yoshihiro Yamamoto, Takahiro Yanada

Gondwana Research　23　(2)　595-616　2013/03

DOI： 10.1016/j.gr.2012.08.004 　

ISSN： 1342-937X
Relocating the 2011 Tohoku-oki earthquakes (M 6.0-9.0) Peer-reviewed

Zhouchuan Huang, Dapeng Zhao

TECTONOPHYSICS　586　35-45　2013/02

DOI： 10.1016/j.tecto.2012.10.019 　

ISSN： 0040-1951

eISSN： 1879-3266
Evolution of late Cenozoic magmatism and the crust–mantle structure in the NE Japan Arc Peer-reviewed

Takeyoshi Yoshida, Jun-Ichi Kimura, Ryoichi Yamada, Valerio Acocella, Hiroshi Sato, Dapeng Zhao, Junichi Nakajima, Akira Hasegawa, Tomomi Okada, Satoru Honda, Masahiro Ishikawa, Oky Dicky Ardiansyah Prima, Takeshi Kudo, Bunichiro Shibazaki, Akiko Tanaka, Toshifumi Imaizumi

Geological Society, London, Special Publications　385　(1)　2013

DOI： 10.1144/SP385.15 　

ISSN： 0305-8719
Crustal and uppermost mantle structure and seismotectonics of North China Craton Peer-reviewed

Jian Wang, Dapeng Zhao, Zhenxing Yao

TECTONOPHYSICS　582　177-187　2013/01

DOI： 10.1016/j.tecto.2012.10.004 　

ISSN： 0040-1951
Mechanism of the 2011 tohoku-oki earthquake (Mw 9.0) and tsunami: Insight from seismic tomography Peer-reviewed

Zhouchuan Huang, Dapeng Zhao

Journal of Asian Earth Sciences　70-71　(1)　160-168　2013
Publisher: Elsevier Ltd
DOI： 10.1016/j.jseaes.2013.03.010 　

ISSN： 1367-9120
Observation of high-frequency PKiKP in Japan: Insight into fine structure of inner core boundary Peer-reviewed

Guoming Jiang, Dapeng Zhao

JOURNAL OF ASIAN EARTH SCIENCES　59　167-184　2012/10

DOI： 10.1016/j.jseaes.2012.07.017 　

ISSN： 1367-9120

eISSN： 1878-5786
East Asia mantle tomography: New insight into plate subduction and intraplate volcanism Peer-reviewed

Wei Wei, Jiandong Xu, Dapeng Zhao, Yaolin Shi

JOURNAL OF ASIAN EARTH SCIENCES　60　88-103　2012/10

DOI： 10.1016/j.jseaes.2012.08.001 　

ISSN： 1367-9120
Imaging the subducting slabs and mantle upwelling under the Japan Islands Peer-reviewed

Dapeng Zhao, T. Yanada, A. Hasegawa, N. Umino, Wei Wei

GEOPHYSICAL JOURNAL INTERNATIONAL　190　(2)　816-828　2012/08

DOI： 10.1111/j.1365-246X.2012.05550.x 　

ISSN： 0956-540X
Seismic anisotropy and heterogeneity in the Alaska subduction zone Peer-reviewed

You Tian, Dapeng Zhao

GEOPHYSICAL JOURNAL INTERNATIONAL　190　(1)　629-649　2012/07

DOI： 10.1111/j.1365-246X.2012.05512.x 　

ISSN： 0956-540X
Seismic tomography and geochemical evidence for lunar mantle heterogeneity: Comparing with Earth Peer-reviewed

Dapeng Zhao, Tomoko Arai, Lucy Liu, Eiji Ohtani

GLOBAL AND PLANETARY CHANGE　90-91　29-36　2012/06

DOI： 10.1016/j.gloplacha.2012.01.004 　

ISSN： 0921-8181
P-wave tomography of the western United States: Insight into the Yellowstone hotspot and the Juan de Fuca slab Peer-reviewed

You Tian, Dapeng Zhao

PHYSICS OF THE EARTH AND PLANETARY INTERIORS　200　72-84　2012/06

DOI： 10.1016/j.pepi.2012.04.004 　

ISSN： 0031-9201

eISSN： 1872-7395
Convergence of the Indian and Eurasian plates under eastern Tibet revealed by seismic tomography Peer-reviewed

Heng Zhang, Dapeng Zhao, Junmeng Zhao, Qiang Xu

GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS　13　(Q06W14)　2012/06

DOI： 10.1029/2012GC004031 　

ISSN： 1525-2027
P wave anisotropic tomography of the Nankai subduction zone in Southwest Japan Peer-reviewed

Jian Wang, Dapeng Zhao

GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS　13　(Q05017)　2012/05

DOI： 10.1029/2012GC004081 　

ISSN： 1525-2027
沈み込み帯の地震の発生機構－地殻流体に規定されて発生する沈み込み帯の地震 Peer-reviewed

長谷川昭, 中島淳一, 内田直希, 梁田高広, 岡田知己, 趙大鵬, 松澤暢, 海野徳仁

地学雑誌　121　(1)　128-160　2012/03
Publisher: Tokyo Geographical Society
DOI： 10.5026/jgeography.121.128 　

ISSN： 0022-135X

More details Close

&emsp;The mechanisms that generate the three main types of earthquake in subduction zones are discussed addressing their relations to geofluids. Studies on the spatial distribution of earthquakes and seismic velocity structure within the subducted slab provide evidence that strongly supports the dehydration embrittlement hypothesis for the generation of intermediate-depth intraslab earthquakes. Detailed imaging of the seismic velocity structure in and around plate boundary zones suggests that interplate coupling is mainly controlled by local fluid over-pressure. Seismic tomography studies show the existence of inclined sheet-like seismic low-velocity zones in the mantle wedge, not only in Tohoku but also in other areas in Japan, which perhaps correspond to the upwelling flow of the subduction-induced convection system. These upwelling flows reach the Moho directly beneath the volcanic areas, suggesting that those volcanic areas are formed by the upwelling flows. Aqueous fluids derived from the slab are probably transported up through the upwelling flows to the arc crust, where they might weaken the surrounding crustal rocks and finally cause shallow inland earthquakes. All of these observations suggest that geofluids expelled from the subducting slab play an important role in the generation of earthquakes in subduction zones.
Tomography and dynamics of Western-Pacific subduction zones Invited Peer-reviewed

Zhao, D

Monogr. Environ. Earth Planets　1　(1)　1-70　2012/03
Publisher: TERRAPUB
DOI： 10.5047/meep.2012.00101.0001 　

ISSN： 2186-4837
Mapping the Tohoku forearc: Implications for the mechanism of the 2011 East Japan earthquake (Mw 9.0) Peer-reviewed

Zhi Wang, Wenli Huang, Dapeng Zhao, Shunping Pei

TECTONOPHYSICS　524　147-154　2012/02

DOI： 10.1016/j.tecto.2011.12.032 　

ISSN： 0040-1951

eISSN： 1879-3266
Tomography of the 2011 Iwaki earthquake (M 7.0) and Fukushima nuclear power plant area Peer-reviewed

P. Tong, D. Zhao, D. Yang

SOLID EARTH　3　(1)　43-51　2012

DOI： 10.5194/se-3-43-2012 　

ISSN： 1869-9510
Metastable olivine wedge in the subducting Pacific slab and its relation to deep earthquakes Peer-reviewed

Guoming Jiang, Dapeng Zhao

JOURNAL OF ASIAN EARTH SCIENCES　42　(6)　1411-1423　2011/11

DOI： 10.1016/j.jseaes.2011.08.005 　

ISSN： 1367-9120
Destruction mechanism of the North China Craton: Insight from P and S wave mantle tomography Peer-reviewed

You Tian, Dapeng Zhao

JOURNAL OF ASIAN EARTH SCIENCES　42　(6)　1132-1145　2011/11

DOI： 10.1016/j.jseaes.2011.06.010 　

ISSN： 1367-9120
Low-frequency earthquakes and tomography in western Japan: Insight into fluid and magmatic activity Peer-reviewed

Dapeng Zhao, Wei Wei, Yukihisa Nishizono, Hirohito Inakura

JOURNAL OF ASIAN EARTH SCIENCES　42　(6)　1381-1393　2011/11

DOI： 10.1016/j.jseaes.2011.08.003 　

ISSN： 1367-9120
Rupture process of the 9 March, 2011 Mw 7.4 Sanriku-Oki, Japan earthquake constrained by jointly inverting teleseismic waveforms, strong motion data and GPS observations Peer-reviewed

Guangfu Shao, Chen Ji, Dapeng Zhao

GEOPHYSICAL RESEARCH LETTERS　38　L00G20　2011/11

DOI： 10.1029/2011GL049164 　

ISSN： 0094-8276

eISSN： 1944-8007
Tomography of the 1995 Kobe earthquake area: comparison of finite-frequency and ray approaches Peer-reviewed

Ping Tong, Dapeng Zhao, Dinghui Yang

GEOPHYSICAL JOURNAL INTERNATIONAL　187　(1)　278-302　2011/10

DOI： 10.1111/j.1365-246X.2011.05139.x 　

ISSN： 0956-540X
Seismic imaging of the Amur-Okhotsk plate boundary zone in the Japan Sea Peer-reviewed

Dapeng Zhao, Zhouchuan Huang, Norihito Umino, Akira Hasegawa, Takeyoshi Yoshida

PHYSICS OF THE EARTH AND PLANETARY INTERIORS　188　(1-2)　82-95　2011/09

DOI： 10.1016/j.pepi.2011.06.013 　

ISSN： 0031-9201
Structural heterogeneity in the megathrust zone and mechanism of the 2011 Tohoku-oki earthquake (Mw 9.0) Peer-reviewed

Dapeng Zhao, Zhouchuan Huang, Norihito Umino, Akira Hasegawa, Hiroo Kanamori

GEOPHYSICAL RESEARCH LETTERS　38　2011/09

DOI： 10.1029/2011GL048408 　

ISSN： 0094-8276
Crustal heterogeneity in the 2007 Noto-Hanto earthquake area and its geodynamical implications Peer-reviewed

Simanchal Padhy, O. P. Mishra, Dapeng Zhao, Wei Wei

TECTONOPHYSICS　509　(1-2)　55-68　2011/08

DOI： 10.1016/j.tecto.2011.06.002 　

ISSN： 0040-1951

eISSN： 1879-3266
Seismic anisotropy and mantle dynamics beneath China Peer-reviewed

Zhouchuan Huang, Liangshu Wang, Dapeng Zhao, Ning Mia, Mingjie Xu

EARTH AND PLANETARY SCIENCE LETTERS　306　(1-2)　105-117　2011/06

DOI： 10.1016/j.epsl.2011.03.038 　

ISSN： 0012-821X

eISSN： 1385-013X
Stress field in the 2008 Iwate-Miyagi earthquake (M7.2) area Peer-reviewed

Zhouchuan Huang, Dapeng Zhao, Liangshu Wang

GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS　12　Q06006　2011/06

DOI： 10.1029/2011GC003626 　

ISSN： 1525-2027
Frequency-dependent shear-wave splitting and multilayer anisotropy in northeast Japan Peer-reviewed

Zhouchuan Huang, Dapeng Zhao, Liangshu Wang

GEOPHYSICAL RESEARCH LETTERS　38　L08302　2011/04

DOI： 10.1029/2011GL046804 　

ISSN： 0094-8276
An attempt to detect temporal variations of crustal structure in the source area of the 2006 Wen-An earthquake in North China Peer-reviewed

Jianshe Lei, Dapeng Zhao, Furen Xie, Jie Liu

JOURNAL OF ASIAN EARTH SCIENCES　40　(4)　958-976　2011/03

DOI： 10.1016/j.jseaes.2010.07.003 　

ISSN： 1367-9120

eISSN： 1878-5786
Seismic heterogeneity and anisotropy of the Honshu arc from the Japan Trench to the Japan Sea Peer-reviewed

Zhouchuan Huang, Dapeng Zhao, Liangshu Wang

GEOPHYSICAL JOURNAL INTERNATIONAL　184　(3)　1428-1444　2011/03

DOI： 10.1111/j.1365-246X.2011.04934.x 　

ISSN： 0956-540X

eISSN： 1365-246X
Seismic tomography and anisotropy in the source area of the 2008 Iwate-Miyagi earthquake (M 7.2) Peer-reviewed

Bin Cheng, Dapeng Zhao, Guowei Zhang

PHYSICS OF THE EARTH AND PLANETARY INTERIORS　184　(3-4)　172-185　2011/02

DOI： 10.1016/j.pepi.2010.11.006 　

ISSN： 0031-9201
East Asia: Seismotectonics, magmatism and mantle dynamics Peer-reviewed

Dapeng Zhao, Sheng Yu, Eiji Ohtani

JOURNAL OF ASIAN EARTH SCIENCES　40　(3)　689-709　2011/02

DOI： 10.1016/j.jseaes.2010.11.013 　

ISSN： 1367-9120
New seismic evidence for the origin of arc and back-arc magmas

Dapeng Zhao, Sadato Ueki, Yukihisa Nishizono, Akira Yamada

Topics in Igneous Petrology　117-132　2011
Publisher: Springer Netherlands
DOI： 10.1007/978-90-481-9600-5_6 　
Shear wave anisotropy in the crust, mantle wedge, and subducting Pacific slab under northeast Japan Peer-reviewed

Zhouchuan Huang, Dapeng Zhao, Liangshu Wang

GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS　12　Q01002　2011/01

DOI： 10.1029/2010GC003343 　

ISSN： 1525-2027
Deep structure and seismogenesis of the north-south seismic zone in southwest China Peer-reviewed

Zhi Wang, Dapeng Zhao, Jian Wang

JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH　115　B12334　2010/12

DOI： 10.1029/2010JB007797 　

ISSN： 0148-0227
Density of high-Ti basalt magma at high pressure and origin of heterogeneities in the lunar mantle Peer-reviewed

Tatsuya Sakamaki, Eiji Ohtani, Satoru Urakawa, Akio Suzuki, Yoshinori Katayama, Dapeng Zhao

EARTH AND PLANETARY SCIENCE LETTERS　299　(3-4)　285-289　2010/11

DOI： 10.1016/j.epsl.2010.09.007 　

ISSN： 0012-821X
Mapping P-wave anisotropy of the Honshu arc from Japan Trench to the back-arc Peer-reviewed

Jian Wang, Dapeng Zhao

JOURNAL OF ASIAN EARTH SCIENCES　39　(5)　396-407　2010/10

DOI： 10.1016/j.jseaes.2010.04.009 　

ISSN： 1367-9120

eISSN： 1878-5786
Upper mantle structure and dynamics beneath Southeast China Peer-reviewed

Zhouchuan Huang, Liangshu Wang, Dapeng Zhao, Mingjie Xu, Ning Mi, Dayong Yu, Hua Li, Cheng Li

PHYSICS OF THE EARTH AND PLANETARY INTERIORS　182　(3-4)　161-169　2010/10

DOI： 10.1016/j.pepi.2010.07.010 　

ISSN： 0031-9201
Mantle transition zone topography and structure beneath the central Tien Shan orogenic belt Peer-reviewed

Xiaobo Tian, Dapeng Zhao, Hongshuang Zhang, You Tian, Zhongjie Zhang

JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH　115　B10308　2010/10

DOI： 10.1029/2008JB006229 　

ISSN： 2169-9313

eISSN： 2169-9356
Deep structure and origin of active volcanoes in China Peer-reviewed

Dapeng Zhao, Lucy Liu

Geoscience Frontiers　1　(1)　31-44　2010/10

DOI： 10.1016/j.gsf.2010.08.002 　

ISSN： 1674-9871
Mantle structure and dynamics under East Russia and adjacent regions Peer-reviewed

Dapeng Zhao, Franko Pirajno, Nikolai L. Dobretsov, Lucy Liu

RUSSIAN GEOLOGY AND GEOPHYSICS　51　(9)　925-938　2010/09

DOI： 10.1016/j.rgg.2010.08.003 　

ISSN： 1068-7971
Tracing the Indian lithospheric mantle beneath central Tibetan Plateau using teleseismic tomography Peer-reviewed

Rizheng He, Dapeng Zhao, Rui Gao, Hongwei Zheng

TECTONOPHYSICS　491　(1-4)　230-243　2010/08

DOI： 10.1016/j.tecto.2010.03.015 　

ISSN： 0040-1951
P-wave tomography, anisotropy and seismotectonics in the eastern margin of Japan Sea Peer-reviewed

Zhouchuan Huang, Dapeng Zhao, Norihito Umino, Liangshu Wang, Toni Matsuzawa, Akira Hasegawa, Takeyoshi Yoshida

TECTONOPHYSICS　489　(1-4)　177-188　2010/06

DOI： 10.1016/j.tecto.2010.04.014 　

ISSN： 0040-1951
Relationships between volcano distribution, crustal structure, and P-wave tomography: an example from the Abu Monogenetic Volcano Group, SW Japan Peer-reviewed

Koji Kiyosugi, C. B. Connor, D. Zhao, L. J. Connor, K. Tanaka

BULLETIN OF VOLCANOLOGY　72　(3)　331-340　2010/04

DOI： 10.1007/s00445-009-0316-4 　

ISSN： 0258-8900
Dissecting large earthquakes in Japan: Role of arc magma and fluids Peer-reviewed

Dapeng Zhao, M. Santosh, Akira Yamada

ISLAND ARC　19　(1)　4-16　2010/03

DOI： 10.1111/j.1440-1738.2009.00694.x 　

ISSN： 1038-4871
Mantle dynamics of the Paleoproterozoic North China Craton: A perspective based on seismic tomography Peer-reviewed

M. Santosh, Dapeng Zhao, Timothy Kusky

JOURNAL OF GEODYNAMICS　49　(1)　39-53　2010/01

DOI： 10.1016/j.jog.2009.09.043 　

ISSN： 0264-3707
Tectonics of the Japanese Islands and surrounding regions: Introduction Peer-reviewed

Zhao Dapeng, Santosh M, Maruyama Shigenori

GONDWANA RESEARCH　16　(3-4)　365-367　2009/12

DOI： 10.1016/j.gr.2009.07.004 　

ISSN： 1342-937X
A tribute to Professor Akira Hasegawa

D. Zhao, M. Santosh, S. Maruyama

Gondwana Research　16　368-369　2009/12/01

DOI： 10.1016/j.gr.2009.05.005 　

ISSN： 1342-937X
Deep slab subduction and dehydration and their geodynamic consequences: Evidence from seismology and mineral physics Peer-reviewed

Dapeng Zhao, Eiji Ohtani

GONDWANA RESEARCH　16　(3-4)　401-413　2009/12

DOI： 10.1016/j.gr.2009.01.005 　

ISSN： 1342-937X
The role of water in the deep upper mantle and transition zone: dehydration of stagnant slabs and its effects on the big mantle wedge Peer-reviewed

E. Ohtani, D. Zhao

RUSSIAN GEOLOGY AND GEOPHYSICS　50　(12)　1073-1078　2009/12

DOI： 10.1016/j.rgg.2009.11.006 　

ISSN： 1068-7971
Seismological evidence for compositional variations at the base of the mantle transition zone under Japan Islands Peer-reviewed

Akira Yamada, Dapeng Zhao, Toru Inoue, Daisuke Suetsugu, Masayuki Obayashi

GONDWANA RESEARCH　16　(3-4)　482-490　2009/12

DOI： 10.1016/j.gr.2009.04.009 　

ISSN： 1342-937X
Structural Heterogeneity in Northeast Japan and Its Implications for the Genesis of the 2004 and 2007 Niigata Earthquakes Peer-reviewed

Zhi Wang, Dapeng Zhao, Runqiu Huang, Xiangrong Tang, O. P. Mishra

BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA　99　(6)　3355-3373　2009/12

DOI： 10.1785/0120080281 　

ISSN： 0037-1106

eISSN： 1943-3573
Tomography of the westernmost Ryukyu subduction zone and the serpentinization of the fore-arc mantle Peer-reviewed

Han-Chiang Chou, Ban-Yuan Kuo, Ling-Yun Chiao, Dapeng Zhao, Shu-Huei Hung

JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH　114　B12301　2009/12

DOI： 10.1029/2008JB006192 　

ISSN： 2169-9313

eISSN： 2169-9356
The dynamics of big mantle wedge, magma factory, and metamorphic-metasomatic factory in subduction zones Peer-reviewed

S. Maruyama, A. Hasegawa, M. Santosh, T. Kogiso, S. Omori, H. Nakamura, K. Kawai, D. Zhao

GONDWANA RESEARCH　16　(3-4)　414-430　2009/12

DOI： 10.1016/j.gr.2009.07.002 　

ISSN： 1342-937X
Plate subduction, and generation of earthquakes and magmas in Japan as inferred from seismic observations: An overview Peer-reviewed

Akira Hasegawa, Junichi Nakajima, Naoki Uchida, Tomomi Okada, Dapeng Zhao, Toru Matsuzawa, Norihito Umino

GONDWANA RESEARCH　16　(3-4)　370-400　2009/12

DOI： 10.1016/j.gr.2009.03.007 　

ISSN： 1342-937X

eISSN： 1878-0571
Structural heterogeneity of the Longmenshan fault zone and the mechanism of the 2008 Wenchuan earthquake (Ms 8.0) Peer-reviewed

Jianshe Lei, Dapeng Zhao

GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS　10　Q10010　2009/10

DOI： 10.1029/2009GC002590 　

ISSN： 1525-2027
Structural heterogeneities in the crust and upper mantle beneath Taiwan Peer-reviewed

Zhi Wang, Yoshio Fukao, Dapeng Zhao, Shuichi Kodaira, O. P. Mishra, Akira Yamada

TECTONOPHYSICS　476　(3-4)　460-477　2009/10

DOI： 10.1016/j.tecto.2009.07.018 　

ISSN： 0040-1951

eISSN： 1879-3266
Crustal tomography under the Median Tectonic Line in Southwest Japan using P and PmP data Peer-reviewed

Sandeep Gupta, Dapeng Zhao, M. Ikeda, S. Ueki, S. S. Rai

JOURNAL OF ASIAN EARTH SCIENCES　35　(5)　377-390　2009/08

DOI： 10.1016/j.jseaes.2009.01.004 　

ISSN： 1367-9120
Seismic imaging of the upper mantle under the Erebus hotspot in Antarctica Peer-reviewed

Sandeep Gupta, Dapeng Zhao, S. S. Rai

GONDWANA RESEARCH　16　(1)　109-118　2009/08

DOI： 10.1016/j.gr.2009.01.004 　

ISSN： 1342-937X

eISSN： 1878-0571
Upper-mantle velocity structure beneath the North China Craton: implications for lithospheric thinning Peer-reviewed

Peifen Xu, Dapeng Zhao

GEOPHYSICAL JOURNAL INTERNATIONAL　177　(3)　1279-1283　2009/06

DOI： 10.1111/j.1365-246X.2009.04120.x 　

ISSN： 0956-540X

eISSN： 1365-246X
Multiscale seismic tomography and mantle dynamics Peer-reviewed

Dapeng Zhao

GONDWANA RESEARCH　15　(3-4)　297-323　2009/06

DOI： 10.1016/j.gr.2008.07.003 　

ISSN： 1342-937X
Crustal correction in teleseismic tomography and its application Peer-reviewed

Jiang Guo-Ming, Zhao Da-Peng, Zhang Gui-Bin

CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION　52　(6)　1508-1514　2009/06

DOI： 10.3969/j.issn.0001-5733.2009.06.012 　

ISSN： 0001-5733
Seismic structure and origin of active intraplate volcanoes in Northeast Asia Peer-reviewed

Yonghong Duan, Dapeng Zhao, Xiankang Zhang, Shaohong Xia, Zhi Liu, Fuyun Wang, Li Li

TECTONOPHYSICS　470　(3-4)　257-266　2009/05

DOI： 10.1016/j.tecto.2009.01.004 　

ISSN： 0040-1951
Insight into the origin of the Tengchong intraplate volcano and seismotectonics in southwest China from local and teleseismic data Peer-reviewed

Jianshe Lei, Dapeng Zhao, Youjin Su

JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH　114　B05302　2009/05

DOI： 10.1029/2008JB005881 　

ISSN： 2169-9313

eISSN： 2169-9356
Seismic image and origin of the Changbai intraplate volcano in East Asia: Role of big mantle wedge above the stagnant Pacific slab Peer-reviewed

Dapeng Zhao, You Tian, Jianshe Lei, Lucy Liu, Sihua Zheng

PHYSICS OF THE EARTH AND PLANETARY INTERIORS　173　(3-4)　197-206　2009/04

DOI： 10.1016/j.pepi.2008.11.009 　

ISSN： 0031-9201
Seismic imaging of the crust and upper mantle under Beijing and surrounding regions Peer-reviewed

Jinli Huang, Dapeng Zhao

PHYSICS OF THE EARTH AND PLANETARY INTERIORS　173　(3-4)　330-348　2009/04

DOI： 10.1016/j.pepi.2009.01.015 　

ISSN： 0031-9201
P-wave anisotropic tomography of the crust and upper mantle under Hokkaido, Japan Peer-reviewed

Jian Wang, Dapeng Zhao

TECTONOPHYSICS　469　(1-4)　137-149　2009/04

DOI： 10.1016/j.tecto.2009.02.005 　

ISSN： 0040-1951
New seismic constraints on the upper mantle structure of the Hainan plume Peer-reviewed

Jianshe Lei, Dapeng Zhao, Bernhard Steinberger, Bateer Wu, Fanluan Shen, Zhixiong Li

PHYSICS OF THE EARTH AND PLANETARY INTERIORS　173　(1-2)　33-50　2009/03

DOI： 10.1016/j.pepi.2008.10.013 　

ISSN： 0031-9201
Mapping the mantle wedge and interplate thrust zone of the northeast Japan arc Invited Peer-reviewed

Dapeng Zhao, Zhi Wang, N. Umino, A. Hasegawa

TECTONOPHYSICS　467　(1-4)　89-106　2009/03

DOI： 10.1016/j.tecto.2008.12.017 　

ISSN： 0040-1951
Seismic tomography of the Pacific slab edge under Kamchatka Peer-reviewed

Guoming Jiang, Dapeng Zhao, Guibin Zhang

TECTONOPHYSICS　465　(1-4)　190-203　2009/02

DOI： 10.1016/j.tecto.2008.11.019 　

ISSN： 0040-1951
Seismic imaging of the crust and upper mantle beneath the North China Craton Peer-reviewed

You Tian, Dapeng Zhao, Ruomei Sun, Jiwen Teng

PHYSICS OF THE EARTH AND PLANETARY INTERIORS　172　(3-4)　169-182　2009/02

DOI： 10.1016/j.pepi.2008.09.002 　

ISSN： 0031-9201

eISSN： 1872-7395
Seismic tomography of the Moon Peer-reviewed

Zhao DaPeng, Lei JianShe, Lucy Liu

CHINESE SCIENCE BULLETIN　53　(24)　3897-3907　2008/12

DOI： 10.1007/s11434-008-0484-1 　

ISSN： 1001-6538
S wave tomography of the crust and uppermost mantle in China Peer-reviewed

Youshun Sun, M. Nafi Tokoz, Shunping Pei, Dapeng Zhao, F. Dale Morgan, Anca Rosca

JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH　113　(B11)　B11307　2008/11

DOI： 10.1029/2008JB005836 　

ISSN： 2169-9313

eISSN： 2169-9356
Seismic imaging of southwest Japan using P and PmP data: Implications for arc magmatism and seismotectonics Peer-reviewed

Anhui Sun, Dapeng Zhao, Michiharu Ikeda, Yong Chen, Qifu Chen

GONDWANA RESEARCH　14　(3)　535-542　2008/10

DOI： 10.1016/j.gr.2008.04.004 　

ISSN： 1342-937X
Crystallographic preferred orientation of akimotoite and seismic anisotropy of Tonga slab Peer-reviewed

Rei Shiraishi, Eiji Ohtani, Kyuichi Kanagawa, Akira Shimojuku, Dapeng Zhao

NATURE　455　(7213)　657-660　2008/10

DOI： 10.1038/nature07301 　

ISSN： 0028-0836

eISSN： 1476-4687
P-wave anisotropic tomography beneath Northeast Japan Peer-reviewed

Jian Wang, Dapeng Zhao

PHYSICS OF THE EARTH AND PLANETARY INTERIORS　170　(1-2)　115-133　2008/09

DOI： 10.1016/j.pepi.2008.07.042 　

ISSN： 0031-9201

eISSN： 1872-7395
The Grenvillian and Pan-African orogens: World's largest orogenies through geologic time, and their implications on the origin of superplume Peer-reviewed

S. Rino, Y. Kon, W. Sato, S. Maruyama, M. Santosh, D. Zhao

GONDWANA RESEARCH　14　(1-2)　51-72　2008/08

DOI： 10.1016/j.gr.2008.01.001 　

ISSN： 1342-937X
Seismic evidence for a metastable olivine wedge in the subducting Pacific slab under Japan Sea Peer-reviewed

Guoming Jiang, Dapeng Zhao, Guibin Zhang

EARTH AND PLANETARY SCIENCE LETTERS　270　(3-4)　300-307　2008/06

DOI： 10.1016/j.epsl.2008.03.037 　

ISSN： 0012-821X
Three-dimensional P- and S-wave velocity structures beneath Japan Peer-reviewed

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

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

DOI： 10.1016/j.pepi.2008.04.017 　

ISSN： 0031-9201

eISSN： 1872-7395
Tomographic evidence for the subducting oceanic crust and forearc mantle serpentinization under Kyushu, Japan Peer-reviewed

Shaohong Xia, Dapeng Zhao, Xuelin Qiu

TECTONOPHYSICS　449　(1-4)　85-96　2008/03

DOI： 10.1016/j.tecto.2007.12.007 　

ISSN： 0040-1951

eISSN： 1879-3266
地震波でみた東北日本沈み込み帯の水循環－スラブから島弧地殻への水の供給－ Peer-reviewed

長谷川昭, 中島淳一, 北佐枝子, 辻優介, 新居恭平, 岡田知己, 松澤暢, 趙大鵬

地学雑誌　117　(1)　59-75　2008/02
Publisher: Tokyo Geographical Society
DOI： 10.5026/jgeography.117.59 　

ISSN： 0022-135X

More details Close

&emsp;Transportation of H₂O from the slab to the arc crust by way of the mantle wedge is discussed based on seismic observations in the northeastern Japan subduction zone. A belt of intraslab seismicity, perhaps caused by dehydration of eclogite-forming phase transformations, has been found in the Pacific slab crust at depths of 70-90 km parallel to iso-depth contours of the plate interface, showing the major locations of slab dehydration. H₂O thus released from the slab may be hosted by serpentine and chlorite just above the slab and is dragged downward. DD seismic tomography detected this layer of serpentine and chlorite as a thin S-wave low-velocity layer. Serpentine and chlorite thus brought down to a depth of 150-200 km should decompose there. H₂O released by this dehydration decomposition is then transported upward and encounters the upwelling flow directly above, which perhaps causes partial melting of materials within the upwelling flow. Seismic tomography studies have clearly imaged this upwelling flow as an inclined sheet-like seismic low-velocity zone at depths of 30-150 km in the mantle wedge subparallel to the subducted slab. This upwelling flow finally meets the Moho below the volcanic front, and melts thus transported perhaps stagnate directly below the Moho. Some of them further migrate into the crust, and are also imaged by seismic tomography as low velocity areas. Their upward migration and repeated discharge to the surface form the volcanic front. Seismic tomography study of the mantle wedge further revealed along-arc variations of the inclined low-velocity zone: very low velocity areas appear periodically every &sim;80 km along the strike of the arc in the backarc region of northeastern Japan above which clustering of Quaternary volcanoes and topography highs are located, suggesting that melts could segregate from these very low velocity areas in the upwelling flow and rise vertically to form volcanoes at the surface in the backarc region.
The 2007 Niigata earthquake: Effect of arc magma and fluids Peer-reviewed

Shaohong Xia, Dapeng Zhao, Xuelin Qiu

PHYSICS OF THE EARTH AND PLANETARY INTERIORS　166　(3-4)　153-166　2008/02

DOI： 10.1016/j.pepi.2007.12.001 　

ISSN： 0031-9201
New insight into the crust and upper mantle structure under Alaska Peer-reviewed

Cheng Qi, Dapeng Zhao, Yong Chen, Natalia A. Ruppert

Polar Science　1　(2-4)　85-100　2007/12

DOI： 10.1016/j.polar.2007.07.001 　

ISSN： 1873-9652
Deep structure beneath the west margin of Philippine Sea plate and South China Sea from P and S wave travel time tomography Peer-reviewed

Qu Chen, Zhou Hui-Lan, Zhao Da-Peng

CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION　50　(6)　1757-1768　2007/11

ISSN： 0001-5733
Seismic images under 60 hotspots: Search for mantle plumes Peer-reviewed

Dapeng Zhao

GONDWANA RESEARCH　12　(4)　335-355　2007/11

DOI： 10.1016/j.gr.2007.03.001 　

ISSN： 1342-937X
Deep structure of southern California Peer-reviewed

You Tian, Dapeng Zhao, Jiwen Teng

PHYSICS OF THE EARTH AND PLANETARY INTERIORS　165　(1-2)　93-113　2007/11

DOI： 10.1016/j.pepi.2007.08.003 　

ISSN： 0031-9201
Seismological constraints on the ultralow velocity zones in the lowermost mantle from core-reflected waves Peer-reviewed

Koki Idehara, Akira Yamada, Dapeng Zhao

PHYSICS OF THE EARTH AND PLANETARY INTERIORS　165　(1-2)　25-46　2007/11

DOI： 10.1016/j.pepi.2007.07.005 　

ISSN： 0031-9201

eISSN： 1872-7395
Search for deep slab segments under Alaska Peer-reviewed

Cheng Qi, Dapeng Zhao, Yong Chen

PHYSICS OF THE EARTH AND PLANETARY INTERIORS　165　(1-2)　68-82　2007/11

DOI： 10.1016/j.pepi.2007.08.004 　

ISSN： 0031-9201
Strong temperature dependence of the first pressure derivative of isothermal bulk modulus at zero pressure Peer-reviewed

Yigang Zhang, Dapeng Zhao, Masanori Matsui, Guangjun Guo

JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH　112　(B11)　doi:10.1029/2006JB004865　2007/11

DOI： 10.1029/2006JB004865 　

ISSN： 0148-0227
The 1992 Landers earthquake: Effect of crustal heterogeneity on earthquake generation Peer-reviewed

Tian, Y, D. Zhao, R. Sun, J. Teng

Chinese J. Geophys　50　1488-1496　2007/11
Teleseismic P-wave tomography evidence for the Indian lithospheric mantle subducting northward beneath the Qiangtang terrane Peer-reviewed

Zheng, H, T. Li, R. Gao, D. Zhao, R. He

Chinese J. Geophys.　50　(5)　1418-1426　2007/11
Mapping the 660 km discontinuity under Japan Islands using mantle reflected waves Peer-reviewed

Yamada, A, D. Zhao

Earth Sci. Frontiers　14　(3)　47-56　2007/08
Tomographic imaging outside a seismic network: Application to the northeast Japan arc Peer-reviewed

Dapeng Zhao, Zhi Wang, N. Umino, A. Hasegawa

BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA　97　(4)　1121-1132　2007/08

DOI： 10.1785/0120050256 　

ISSN： 0037-1106
Mantle plume tomography Peer-reviewed

Guust Nolet, Richard Allen, Dapeng Zhao

CHEMICAL GEOLOGY　241　(3-4)　248-263　2007/07

DOI： 10.1016/j.chemgeo.2007.01.022 　

ISSN： 0009-2541

eISSN： 1878-5999
Teleseismic P-wave tomography and the upper mantle structure of the central Tien Shan orogenic belt Peer-reviewed

Jianshe Lei, Dapeng Zhao

PHYSICS OF THE EARTH AND PLANETARY INTERIORS　162　(3-4)　165-185　2007/07

DOI： 10.1016/j.pepi.2007.04.010 　

ISSN： 0031-9201
Deep structure of the Japan subduction zone Peer-reviewed

Mohamed F. Abdelwahed, Dapeng Zhao

PHYSICS OF THE EARTH AND PLANETARY INTERIORS　162　(1-2)　32-52　2007/06

DOI： 10.1016/j.pepi.2007.03.001 　

ISSN： 0031-9201
Teleseismic evidence for a break-off subducting slab under Eastern Turkey Peer-reviewed

Jianshe Lei, Dapeng Zhao

EARTH AND PLANETARY SCIENCE LETTERS　257　(1-2)　14-28　2007/05

DOI： 10.1016/j.epsl.2007.02.011 　

ISSN： 0012-821X
Mapping the crustal structure under active volcanoes in central Tohoku, Japan using P and PmP data Peer-reviewed

Shaohong Xia, Dapeng Zhao, Xuelin Qiu, J. Nakajima, T. Matsuzawa, A. Hasegawa

GEOPHYSICAL RESEARCH LETTERS　34　(10)　doi:10.1029/2007GL030026　2007/05

DOI： 10.1029/2007GL030026 　

ISSN： 0094-8276
Superplume, supercontinent, and post-perovskite: Mantle dynamics and anti-plate tectonics on the Core-Mantle Boundary Peer-reviewed

S. Maruyama, M. Santosh, D. Zhao

GONDWANA RESEARCH　11　(1-2)　7-37　2007/01

DOI： 10.1016/j.gr.2006.06.003 　

ISSN： 1342-937X
Mantle dynamics of Western Pacific and East Asia: Insight from seismic tomography and mineral physics Peer-reviewed

Dapeng Zhao, Shigenori Maruyama, Soichi Omori

GONDWANA RESEARCH　11　(1-2)　120-131　2007/01

DOI： 10.1016/j.gr.2006.06.006 　

ISSN： 1342-937X
Seismic tomography of the crust and upper mantle structure underneath the Chinese Tianshan Peer-reviewed

Guo Biao, Liu Qi-Yuan, Chen Jiu-Hui, Zhao Da-Peng, Li Shun-Cheng, Lai Yuan-Gen

CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION　49　(6)　1693-1700　2006/11

ISSN： 0001-5733
Structural heterogeneity and its implications for the low frequency tremors in Southwest Japan Peer-reviewed

Zhi Wang, Dapeng Zhao, O. P. Mishra, Akira Yamada

EARTH AND PLANETARY SCIENCE LETTERS　251　(1-2)　66-78　2006/11

DOI： 10.1016/j.epsl.2006.08.025 　

ISSN： 0012-821X
High-resolution mantle tomography of China and surrounding regions Peer-reviewed

Jinli Huang, Dapeng Zhao

JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH　111　(B9)　B09305　2006/09

DOI： 10.1029/2005JB004066 　

ISSN： 0148-0227
Tomographic evidence for the Eurasian lithosphere subducting beneath south Taiwan Peer-reviewed

Zhi Wang, Dapeng Zhao, Jian Wang, Honn Kao

GEOPHYSICAL RESEARCH LETTERS　33　(18)　L18306　2006/09

DOI： 10.1029/2006GL027166 　

ISSN： 0094-8276

eISSN： 1944-8007
Vp and Vs tomography of Kyushu, Japan: New insight into arc magmatism and forearc seismotectonics Peer-reviewed

Zhi Wang, Dapeng Zhao

PHYSICS OF THE EARTH AND PLANETARY INTERIORS　157　(3-4)　269-285　2006/08

DOI： 10.1016/j.pepi.2006.04.008 　

ISSN： 0031-9201
Teleseismic P-wave tomography of lithospheric mantle beneath west Kunlun orogenic belts Peer-reviewed

RZ He, DP Zhao, R Gao, BS Wang, C Qi

CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION　49　(3)　778-787　2006/05

ISSN： 0001-5733
3-D P and S wave velocity structures and their relationship to strong earthquakes in the Chinese capital region Peer-reviewed

C Qi, DP Zhao, Y Chen, QF Chen, BS Wang

CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION　49　(3)　805-815　2006/05

ISSN： 0001-5733
Seismic evidence for the influence of fluids on the 2005 west off Fukuoka prefecture earthquake in southwest Japan Peer-reviewed

Zhi Wang, Dapeng Zhao

PHYSICS OF THE EARTH AND PLANETARY INTERIORS　155　(3-4)　313-324　2006/05

DOI： 10.1016/j.pepi.2006.01.006 　

ISSN： 0031-9201

eISSN： 1872-7395
The Taiwan-Ryukyu subduction-collision complex: Folding of a viscoelastic slab and the double seismic zone Peer-reviewed

HC Chou, BY Kuo, SH Hung, LY Chiao, DP Zhao, YM Wu

JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH　111　(B4)　B04410　2006/04

DOI： 10.1029/2005JB003822 　

ISSN： 0148-0227
Seismic images of the source area of the 2004 Mid-Niigata prefecture earthquake in Northeast Japan Peer-reviewed

Z Wang, DP Zhao

EARTH AND PLANETARY SCIENCE LETTERS　244　(1-2)　16-31　2006/04

DOI： 10.1016/j.epsl.2006.02.015 　

ISSN： 0012-821X
Equations of state of CaSiO3 Perovskite: a molecular dynamics study Peer-reviewed

YG Zhang, DP Zhao, M Matsui, GJ Guo

PHYSICS AND CHEMISTRY OF MINERALS　33　(2)　126-137　2006/04

DOI： 10.1007/s00269-006-0060-7 　

ISSN： 0342-1791
3-D Seismic structure of the source area of the 1993 Latur, India, earthquake and its implications for rupture nucleations Peer-reviewed

S Mukhopadhyay, OP Mishra, D Zhao, Kayal, JR

TECTONOPHYSICS　415　(1-4)　1-16　2006/03

DOI： 10.1016/j.tecto.2005.10.041 　

ISSN： 0040-1951

eISSN： 1879-3266
Deep structure and origin of the Baikal rift zone Peer-reviewed

DP Zhao, JS Lei, T Inoue, A Yamada, SS Gao

EARTH AND PLANETARY SCIENCE LETTERS　243　(3-4)　681-691　2006/03

DOI： 10.1016/j.epsl.2006.01.033 　

ISSN： 0012-821X
Crustal structure, fault segmentation, and activity of the Median Tectonic Line in Shikoku, Japan Peer-reviewed

M Ikeda, DP Zhao, Y Ohno

TECTONOPHYSICS　412　(1-2)　49-60　2006/01

DOI： 10.1016/j.tecto.2005.10.001 　

ISSN： 0040-1951
A new insight into the Hawaiian plume Peer-reviewed

JS Lei, DP Zhao

EARTH AND PLANETARY SCIENCE LETTERS　241　(3-4)　438-453　2006/01

DOI： 10.1016/j.epsl.2005.11.038 　

ISSN： 0012-821X
Global P-wave tomography: On the effect of various mantle and core phases Peer-reviewed

JS Lei, DP Zhao

PHYSICS OF THE EARTH AND PLANETARY INTERIORS　154　(1)　44-69　2006/01

DOI： 10.1016/j.pepi.2005.09.001 　

ISSN： 0031-9201
Towards mapping the three-dimensional distribution of water in the transition zone from P-velocity tomography and 660-km discontinuity depths Peer-reviewed

Daisuke Suetsugu, Toru Inoue, Akira Yamada, Dapeng Zhao, Masayuki Obayashi

Geophysical Monograph Series　168　237-249　2006
Publisher: Blackwell Publishing Ltd
DOI： 10.1029/167GM18 　

ISSN： 2328-8779 0065-8448
Suboceanic earthquake location and seismic structure in the Kanto district, central Japan Peer-reviewed

Z Wang, DP Zhao

EARTH AND PLANETARY SCIENCE LETTERS　241　(3-4)　789-803　2006/01

DOI： 10.1016/j.epsl.2005.11.015 　

ISSN： 0012-821X
Precisely measured travel times of mantle body waves: implications for mantle heterogeneity and tomography Peer-reviewed

Zhao, D, A. Yamada, Y. Ohta

Earth Science Frontiers　13　37-47　2006
Seismic imaging of the entire arc of Tohoku and Hokkaido in Japan using P-wave, S-wave and sP depth-phase data Peer-reviewed

Z Wang, DP Zhao

PHYSICS OF THE EARTH AND PLANETARY INTERIORS　152　(3)　144-162　2005/09

DOI： 10.1016/j.pepi.2005.06.010 　

ISSN： 0031-9201
Anisotropy of akimotoite: A molecular dynamics study Peer-reviewed

YG Zhang, DP Zhao, M Matsui

PHYSICS OF THE EARTH AND PLANETARY INTERIORS　151　(3-4)　309-319　2005/08

DOI： 10.1016/j.pepi.2005.04.003 　

ISSN： 0031-9201

eISSN： 1872-7395
Local earthquake reflection tomography of the Landers aftershock area Peer-reviewed

DP Zhao, S Todo, JS Lei

EARTH AND PLANETARY SCIENCE LETTERS　235　(3-4)　623-631　2005/07

DOI： 10.1016/j.epsl.2005.04.039 　

ISSN： 0012-821X
The crust and upper mantle discontinuity structure beneath Alaska inferred from receiver functions Peer-reviewed

YH Ai, DP Zhao, Gao, X, WW Xu

PHYSICS OF THE EARTH AND PLANETARY INTERIORS　150　(4)　339-350　2005/06

DOI： 10.1016/j.pepi.2004.12.002 　

ISSN： 0031-9201
P-wave tomography and origin of the Changbai intraplate volcano in Northeast Asia Peer-reviewed

JS Lei, DP Zhao

TECTONOPHYSICS　397　(3-4)　281-295　2005/03

DOI： 10.1016/j.tecto.2004.12.009 　

ISSN： 0040-1951
Waveform modelling of local earthquakes in southwest Japan Peer-reviewed

MF Abdelwahed, DP Zhao

EARTH PLANETS AND SPACE　57　(11)　1039-1054　2005

DOI： 10.1186/BF03351883 　

ISSN： 1343-8832
Crustal heterogeneity beneath southwest Japan estimated from direct and Moho-reflected waves Peer-reviewed

MK Salah, DP Zhao, JS Lei, MF Abdelwahed

TECTONOPHYSICS　395　(1-2)　1-17　2005/01

DOI： 10.1016/j.tecto.2004.08.005 　

ISSN： 0040-1951
Modeling long-term volcanic hazards through Bayesian inference: An example from the Tohoku volcanic arc, Japan Peer-reviewed

AJ Martin, K Umeda, CB Connor, JN Weller, DP Zhao, M Takahashi

JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH　109　(B10)　doi:10.1029/2004JB003201　2004/10

DOI： 10.1029/2004JB003201 　

ISSN： 2169-9313

eISSN： 2169-9356
Global tomographic images of mantle plumes and subducting slabs: insight into deep Earth dynamics Peer-reviewed

DP Zhao

PHYSICS OF THE EARTH AND PLANETARY INTERIORS　146　(1-2)　3-34　2004/08

DOI： 10.1016/j.pepi.2003.07.032 　

ISSN： 0031-9201
Crustal heterogeneity and seismotectonics of the region around Beijing, China Peer-reviewed

JL Huang, DP Zhao

TECTONOPHYSICS　385　(1-4)　159-180　2004/07

DOI： 10.1016/j.tecto.2004.04.024 　

ISSN： 0040-1951
Origin of the Changbai intraplate volcanism in Northeast China: Evidence from seismic tomography Peer-reviewed

DP Zhao, JS Lei, RY Tang

CHINESE SCIENCE BULLETIN　49　(13)　1401-1408　2004/07

DOI： 10.1360/04wd0125 　

ISSN： 1001-6538
Crustal heterogeneity in the 2000 western Tottori earthquake region: effect of fluids from slab dehydration Peer-reviewed

DP Zhao, H Tani, OP Mishra

PHYSICS OF THE EARTH AND PLANETARY INTERIORS　145　(1-4)　161-177　2004/07

DOI： 10.1016/j.pepi.2004.03.009 　

ISSN： 0031-9201
Seismic evidence for dehydration embrittlement of the subducting Pacific slab Peer-reviewed

OP Mishra, DP Zhao

GEOPHYSICAL RESEARCH LETTERS　31　(9)　doi:10.1029/2004GL019489　2004/05

DOI： 10.1029/2004GL019489 　

ISSN： 0094-8276

eISSN： 1944-8007
Rayleigh-wave group velocity distribution in the Antarctic region Peer-reviewed

R Kobayashi, DP Zhao

PHYSICS OF THE EARTH AND PLANETARY INTERIORS　141　(3)　167-181　2004/03

DOI： 10.1016/j.pepi.2003.11.011 　

ISSN： 0031-9201

eISSN： 1872-7395
Seismic ray path variations in a 3D global velocity model Peer-reviewed

Dapeng Zhao, Jianshe Lei

PHYSICS OF THE EARTH AND PLANETARY INTERIORS　141　(3)　153-166　2004/03

DOI： 10.1016/j.pepi.2003.11.010 　

ISSN： 0031-9201
Mapping the crustal thickness in southwest Japan using Moho-reflected waves Peer-reviewed

Mohamed K. Salah, Dapeng Zhao

PHYSICS OF THE EARTH AND PLANETARY INTERIORS　141　(2)　79-94　2004/02

DOI： 10.1016/j.pepi.2003.10.002 　

ISSN： 0031-9201
Tomography of northeast Japan forearc and its implications for interplate seismic coupling Peer-reviewed

OP Mishra, DP Zhao, N Umino, A Hasegawa

GEOPHYSICAL RESEARCH LETTERS　30　(16)　doi:10.1029/2003GL017736　2003/08

DOI： 10.1029/2003GL017736 　

ISSN： 0094-8276
Crack density, saturation rate and porosity at the 2001 Bhuj, India, earthquake hypocenter: a fluid-driven earthquake? Peer-reviewed

OP Mishra, Dapeng Zhao

EARTH AND PLANETARY SCIENCE LETTERS　212　(3-4)　393-405　2003/07

DOI： 10.1016/S0012-821X(03)00285-1 　

ISSN： 0012-821X
Three-dimensional P- and S-wave velocity structures beneath the Ryukyu arc Peer-reviewed

M Nakamura, Y Yoshida, DP Zhao, H Katao, S Nishimura

TECTONOPHYSICS　369　(3-4)　121-143　2003/07

DOI： 10.1016/S0040-1951(03)00172-0 　

ISSN： 0040-1951
Seismic tomography from local crustal earthquakes beneath eastern Rif Mountains of Morocco Peer-reviewed

Serrano, I, DP Zhao, J Morales, F Torcal

TECTONOPHYSICS　367　(3-4)　187-201　2003/06

DOI： 10.1016/S0040-1951(03)00100-8 　

ISSN： 0040-1951
3-D seismic structure of Kii Peninsula in southwest Japan: evidence for slab dehydration in the forearc Peer-reviewed

Mohamed K. Salah, Dapeng Zhao

TECTONOPHYSICS　364　(3-4)　191-213　2003/04

DOI： 10.1016/S0040-1951(03)00059-3 　

ISSN： 0040-1951
P-wave tomography of crust and upper mantle under Southern California: Influence of topography of Moho discontinuity Peer-reviewed

Jinli Huang, Dapeng Zhao

Chinese Journal of Seismology　25　563-573　2003
Three-dimensional attenuation structure of Southwest Japan estimated from spectra of microearthquakes Peer-reviewed

Mohamed K. Salah, Dapeng Zhao

Phys. Earth Planet. Inter.　136　215-231　2003

DOI： 10.1016/S0031-9201(03)00049-9 　
The 2001 Bhuj earthquake: Tomographic evidence for fluids at the hypocenter and its implications for rupture nucleation Peer-reviewed

Kayal, JR, DP Zhao, OP Mishra, R De, OP Singh

GEOPHYSICAL RESEARCH LETTERS　29　(24)　10.1029/ 2002GL015177　2002/12

DOI： 10.1029/2002GL015177 　

ISSN： 0094-8276

eISSN： 1944-8007
3-D velocity structure of P-wave in the crust and upper-mantle beneath Pamir and adjacent region Peer-reviewed

Jianshe Lei, Huilan Zhou, Dapeng Zhao

CHINESE JOURNAL OF GEOPHYSICS　45　(6)　802-+　2002/11

ISSN： 0001-5733
Lithospheric structure and its relationship to seismic and volcanic activity in southwest China Peer-reviewed

JL Huang, DP Zhao, SH Zheng

JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH　107　(B10)　10.1029/2000JB000137　2002/10

DOI： 10.1029/2000JB000137 　

ISSN： 2169-9313

eISSN： 2169-9356
Influence of fluids and magma on earthquakes: seismological evidence Peer-reviewed

DP Zhao, OP Mishra, R Sanda

PHYSICS OF THE EARTH AND PLANETARY INTERIORS　132　(4)　249-267　2002/10

DOI： 10.1016/S0031-9201(02)00082-1 　

ISSN： 0031-9201
Geophysical signatures of a basic-body rock placed in the upper crust of the External Zones of the Betic Cordillera (Southern Spain) Peer-reviewed

Serrano, I, F Bohoyo, J Galindo-Zaldivar, J Morales, DP Zhao

GEOPHYSICAL RESEARCH LETTERS　29　(11)　2002/06

DOI： 10.1029/2001GL013487 　

ISSN： 0094-8276
Hot fingers in the mantle wedge: new insights into magma genesis in subduction zones Peer-reviewed

Y Tamura, Y Tatsumi, DP Zhao, Y Kido, H Shukuno

EARTH AND PLANETARY SCIENCE LETTERS　197　(1-2)　105-116　2002/03

DOI： 10.1016/S0012-821X(02)00465-X 　

ISSN： 0012-821X
3-D crustal structure of the extensional Granada Basin in the convergent boundary between the Eurasian and African plates Peer-reviewed

Serrano, I, DP Zhao, J Morales

TECTONOPHYSICS　344　(1-2)　61-79　2002/01

DOI： 10.1016/S0040-1951(01)00201-3 　

ISSN： 0040-1951
Seismological structure of subduction zones and its implications for arc magmatism and dynamics Peer-reviewed

Dapeng Zhao

PHYSICS OF THE EARTH AND PLANETARY INTERIORS　127　(1-4)　197-214　2001/12

DOI： 10.1016/S0031-9201(01)00228-X 　

ISSN： 0031-9201
Seismic imaging of arc magma and fluids under the central part of northeastern Japan Peer-reviewed

J Nakajima, T Matsuzawa, A Hasegawa, DP Zhao

TECTONOPHYSICS　341　(1-4)　1-17　2001/11

DOI： 10.1016/S0040-1951(01)00181-0 　

ISSN： 0040-1951
Three-dimensional structure of Vp, Vs and Vp/Vs beneath northeastern Japan: Implications for arc magmatism and fluids Peer-reviewed

Junichi Nakajima, Toru Matsuzawa, Akira Hasegawa, Dapeng Zhao

Journal of Geophysical Research　106　21843-21857　2001/10
Seismic structure and origin of hotspots and mantle plumes Peer-reviewed

Dapeng Zhao

EARTH AND PLANETARY SCIENCE LETTERS　192　(3)　251-265　2001/10

DOI： 10.1016/S0012-821X(01)00465-4 　

ISSN： 0012-821X
New advances of seismic tomography and its applications to subduction zones and earthquake fault zones: A review Peer-reviewed

Dapeng Zhao

ISLAND ARC　10　(1)　68-84　2001/03

DOI： 10.1046/j.1440-1738.2001.00291.x 　

ISSN： 1038-4871
Dehydration of serpentinized slab mantle: Seismic evidence from southwest Japan Peer-reviewed

T Seno, DP Zhao, Y Kobayashi, M Nakamura

EARTH PLANETS AND SPACE　53　(9)　861-871　2001

DOI： 10.1186/BF03351683 　

ISSN： 1343-8832
Tomographic image of low P velocity anomalies above slab in northern Cascadia subduction zone Peer-reviewed

DP Zhao, KL Wang, GC Rogers, SM Peacock

EARTH PLANETS AND SPACE　53　(4)　285-293　2001

DOI： 10.1186/BF03352385 　

ISSN： 1343-8832
Impact of seismic tomography on earth sciences Peer-reviewed

DP Zhao, Kayal, JR

CURRENT SCIENCE　79　(9)　1208-1214　2000/11

ISSN： 0011-3891
Transportation of H_2O and Melting Beneath the Japanese Islands

IWAMORI Hikaru, ZHAO Dapeng

J. Geogr.　109　(4)　614-626　2000/08/25
Publisher: Tokyo Geographical Society
DOI： 10.5026/jgeography.109.4_614 　

ISSN： 0022-135X

More details Close

Material recycling in subduction zones, including generation and migration of aqueousfluids and melts, is key to understanding the origin of volcanism in subduction zones. It isalso important for understanding the global mass budget, such as formation and growth ofthe continents. Recent knowledge concerning the phase relationships of hydrous peridotiticand basaltic systems allows us to model fluid generation and migration in subduction zones.Here we present (1) numerical models for the transportation of H₂O and melting beneath theJapanese islands, in which generation and migration of aqueous fluid, its interaction with theconvecting solid, and melting are considered, based on the phase relationships, (2) predictionsof the corresponding seismic structures based on the calculated distribution of the fluids (aqueous fluids and melts), (3) 3-D seismic tomographic images beneath the islands, (4) analyses on distribution of the volcanoes and the volcanic chains, and (5) comparisonsbetween the model predictions and the observations.<BR>The model calculation suggests that in northeast Japan, nearly all the H2O expelled fromthe subducted Pacific plate is hosted by serpentine and chlorite just above the plate, and isbrought down to 150-200km. Breakdown of serpentine and chlorite at these depths results inthe formation of a fluid column through which H₂O is transported upwards, and results inthe initiation of melting in the mantle wedge beneath the backarc. The seismic tomographicstudies suggest the existence of such a melting region beneath the backarc. In central Japan, the subducted Philippine Sea plate overlaps the subducted Pacific plate. This geometry causesslow thermal recovery of the subducted Pacific plate, resulting in dehydration reactions atlevels (200-300km) deeper than in northeast Japan, and bending of the volcanic chaintowards the backarc side. In contrast, in southwest Japan, where a relatively hot part of thePhilippine Sea plate (Shikoku Basin) subducts, the dehydration reactions are predicted tooccur at relatively shallow levels (100km depth). The seismic tomographic image supportswell the predicted distribution of the fluids beneath the volcanic front to the forearc region.These comparisons between the model predictions and the observations suggest that th ethermal structure (or age) of the subducting plate strongly controls the distribution of the aqueous fluids and melts in subduction zones through the position of the dehydration reactions.
Seismic structure and magmatism of the young Kyushu subduction zone Peer-reviewed

DP Zhao, K Asamori, H Iwamori

GEOPHYSICAL RESEARCH LETTERS　27　(14)　2057-2060　2000/07

DOI： 10.1029/2000GL011512 　

ISSN： 0094-8276
Evidence for the location and cause of large crustal earthquakes in Japan Peer-reviewed

DP Zhao, F Ochi, A Hasegawa, A Yamamoto

JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH　105　(B6)　13579-13594　2000/06

DOI： 10.1029/2000JB900026 　

ISSN： 2169-9313

eISSN： 2169-9356
Seismic activity and deformation process of the overriding plate in the northeastern Japan subduction zone

Akira Hasegawa, Akira Yamamoto, Norihito Umino, Satoshi Miura, Shigeki Horiuchi, Dapeng Zhao, Hiroki Sato

Tectonophysics　319　(4)　225-239　2000/04/20

DOI： 10.1016/S0040-1951(99)00296-6 　

ISSN： 0040-1951
An empirical relationship between seismic attenuation and velocity anomalies in the upper mantle Peer-reviewed

EG Roth, DA Wiens, DP Zhao

GEOPHYSICAL RESEARCH LETTERS　27　(5)　601-604　2000/03

ISSN： 0094-8276
Melting and seismic structure beneath the northeast Japan arc Peer-reviewed

H Iwamori, DP Zhao

GEOPHYSICAL RESEARCH LETTERS　27　(3)　425-428　2000/02

ISSN： 0094-8276
Crack density and saturation rate in the 1995 Kobe earthquake region Peer-reviewed

DP Zhao, T Mizuno

GEOPHYSICAL RESEARCH LETTERS　26　(21)　3213-3216　1999/11

DOI： 10.1029/1999GL005411 　

ISSN： 0094-8276
Active continental subduction beneath the Betic Cordillera and the Alboran Sea Peer-reviewed

J Morales, Serrano, I, A Jabaloy, J Galindo-Zaldivar, D Zhao, F Torcal, F Vidal, F Gonzalez-Lodeiro

GEOLOGY　27　(8)　735-738　1999/08

DOI： 10.1130/0091-7613(1999)027<0735:ACSBTB>2.3.CO;2 　

ISSN： 0091-7613
Tomographic imaging of the P-wave velocity structure beneath the Kamchatka peninsula Peer-reviewed

A Gorbatov, J Dominguez, G Suarez, Kostoglodov, V, D Zhao, E Gordeev

GEOPHYSICAL JOURNAL INTERNATIONAL　137　(2)　269-279　1999/05

DOI： 10.1046/j.1365-246X.1999.00801.x 　

ISSN： 0956-540X
P-wave tomographic images in the Central Betics-Alboran sea (South Spain) using local earthquakes: contribution for a continental collision Peer-reviewed

Serrano, I, J Morales, DP Zhao, F Torcal, F Vidal

GEOPHYSICAL RESEARCH LETTERS　25　(21)　4031-4034　1998/11

DOI： 10.1029/1998GL900021 　

ISSN： 0094-8276
Three-dimensional seismic structure beneath Shillong Plateau and Assam Valley, Northeast India Peer-reviewed

Kayal, JR, DP Zhao

BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA　88　(3)　667-676　1998/06

ISSN： 0037-1106
The 1995 Kobe earthquake: Seismic image of the source zone and its implications for the rupture nucleation Peer-reviewed

DP Zhao, H Negishi

JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH　103　(B5)　9967-9986　1998/05

DOI： 10.1029/97JB03670 　

ISSN： 2169-9313

eISSN： 2169-9356
Tomographic imaging of deep-velocity structure beneath the Eastern and Southern Carpathians, Romania: Implications for continental collision Peer-reviewed

GW Fan, TC Wallace, DP Zhao

JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH　103　(B2)　2705-2723　1998/02

ISSN： 2169-9313

eISSN： 2169-9356
Depth extent of the Lau back-arc spreading center and its relation to subduction processes Peer-reviewed

DP Zhao, YB Xu, DA Wiens, L Dorman, J Hildebrand, S Webb

SCIENCE　278　(5336)　254-257　1997/10

DOI： 10.1126/science.278.5336.254 　

ISSN： 0036-8075
Morphology of the subducting slab boundary in the northeastern Japan arc Peer-reviewed

DP Zhao, T Matsuzawa, A Hasegawa

PHYSICS OF THE EARTH AND PLANETARY INTERIORS　102　(1-2)　89-104　1997/06

DOI： 10.1016/S0031-9201(96)03258-X 　

ISSN： 0031-9201
State of stress before and after the 1994 Northridge earthquake Peer-reviewed

DP Zhao, H Kanamori, D Wiens

GEOPHYSICAL RESEARCH LETTERS　24　(5)　519-522　1997/03

DOI： 10.1029/97GL00258 　

ISSN： 0094-8276
Tomography of the source area of the 1995 Kobe earthquake: Evidence for fluids at the hypocenter? Peer-reviewed

Dapeng Zhao, Hiroo Kanamori, Hiroaki Negishi, Douglas Wiens

Science　274　1891-1894　1996/12

DOI： 10.1126/science.274.5294.1891 　

ISSN： 0036-8075
Three-dimensional seismic velocity structure of the crust and uppermost mantle beneath Taiwan Peer-reviewed

KF Ma, JH Wang, Dapeng Zhao

JOURNAL OF PHYSICS OF THE EARTH　44　85-105　1996/03

DOI： 10.4294/jpe1952.44.85 　

ISSN： 0022-3743
Simultaneous inversion of local and teleseismic data for the crust and mantle structure of southern California Peer-reviewed

DP Zhao, H Kanamori, E Humphreys

PHYSICS OF THE EARTH AND PLANETARY INTERIORS　93　(3-4)　191-214　1996/02

DOI： 10.1016/0031-9201(95)03076-X 　

ISSN： 0031-9201
THE 1994 NORTHRIDGE EARTHQUAKE - 3-D CRUSTAL STRUCTURE IN THE RUPTURE ZONE AND ITS RELATION TO THE AFTERSHOCK LOCATIONS AND MECHANISMS Peer-reviewed

DP ZHAO, H KANAMORI

GEOPHYSICAL RESEARCH LETTERS　22　(7)　763-766　1995/04

DOI： 10.1029/94GL03222 　

ISSN： 0094-8276
TOMOGRAPHIC IMAGING OF THE ALASKA SUBDUCTION ZONE Peer-reviewed

Dapeng Zhao, Douglas Christensen, Hans Pulpan

JOURNAL OF GEOPHYSICAL RESEARCH　100　(B4)　6487-6504　1995/04

DOI： 10.1029/95JB00046 　

ISSN： 2169-9313

eISSN： 2169-9356
Deep structure of Japan subduction zone as derived from local, regional, and teleseismic events Peer-reviewed

Dapeng Zhao, Akira Hasegawa, Hiroo Kanamori

JOURNAL OF GEOPHYSICAL RESEARCH　99　(B11)　22313-22329　1994/11

DOI： 10.1029/94JB01149 　

ISSN： 2169-9313

eISSN： 2169-9356
Teleseismic evidence for lateral heterogeneities in the northeastern Japan arc Peer-reviewed

Dapeng Zhao, Akira Hasegawa

TECTONOPHYSICS　237　189-199　1994/10

DOI： 10.1016/0040-1951(94)90254-2 　

ISSN： 0040-1951
Deep structure of island arc magmatic regions as inferred from seismic observations Peer-reviewed

Akira Hasegawa, Dapeng Zhao

Magmatic Systems（ed. M. P. Ryan）　179-195　1994/08
THE 1992 LANDERS EARTHQUAKE SEQUENCE - EARTHQUAKE OCCURRENCE AND STRUCTURAL HETEROGENEITIES Peer-reviewed

DP ZHAO, H KANAMORI

GEOPHYSICAL RESEARCH LETTERS　20　(11)　1083-1086　1993/06

DOI： 10.1029/93GL01239 　

ISSN： 0094-8276
P-WAVE TOMOGRAPHIC IMAGING OF THE CRUST AND UPPER MANTLE BENEATH THE JAPAN ISLANDS Peer-reviewed

Dapeng Zhao, Akira Hasegawa

JOURNAL OF GEOPHYSICAL RESEARCH　98　(B3)　4333-4353　1993/03

DOI： 10.1029/92JB02295 　

ISSN： 0148-0227
DEEP-STRUCTURE OF ARC VOLCANOS AS INFERRED FROM SEISMIC OBSERVATIONS Peer-reviewed

A HASEGAWA, A YAMAMOTO, D ZHAO, S HORI, S HORIUCHI

PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY OF LONDON　342　(1663)　167-178　1993/01

ISSN： 0962-8428
Tomographic imaging of P and S wave velocity structure beneath northeastern Japan Peer-reviewed

Dapeng Zhao, Akira Hasegawa, Shigeki Horiuchi

Journal of Geophysical Research　97　19909-19928　1992/12

DOI： 10.1029/92JB00603 　

ISSN： 0148-0227
P-WAVE IMAGE OF THE CRUST AND UPPERMOST MANTLE IN SOUTHERN CALIFORNIA Peer-reviewed

Dapeng Zhao, Hiroo Kanamori

GEOPHYSICAL RESEARCH LETTERS　19　(23)　2329-2332　1992/12

ISSN： 0094-8276
SEISMIC VELOCITY STRUCTURE OF THE CRUST BENEATH THE JAPAN ISLANDS Peer-reviewed

D ZHAO, S HORIUCHI, A HASEGAWA

TECTONOPHYSICS　212　289-301　1992/10

ISSN： 0040-1951
DEEP STRUCTURE OF THE NORTHEASTERN JAPAN ARC AND ITS RELATIONSHIP TO SEISMIC AND VOLCANIC ACTIVITY Peer-reviewed

A HASEGAWA, DP ZHAO, S HORI, A YAMAMOTO, S HORIUCHI

Nature　352　683-689　1991/08

DOI： 10.1038/352683a0 　

ISSN： 0028-0836
3-D seismic velocity structure of the crust and uppermost mantle in the northeastern Japan arc Peer-reviewed

Dapeng Zhao, Shigeki Horiuchi, Akira Hasegawa

Tectonophysics　181　135-149　1990/09

DOI： 10.1016/0040-1951(90)90013-X 　

ISSN： 0040-1951
磐梯山の山体を通過する地震波形記録から見た溶融体の規模について Peer-reviewed

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

地震２　43　379-387　1990/04

DOI： 10.4294/zisin1948.43.3_379

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Misc. 7

月と火星の全球地震波伝播シミュレーション

豊国源知, 竹中博士, 趙大鵬, 石原吉明

SENAC : 東北大学大型計算機センター広報　46　(3)　1-12　2013/07
Publisher: 東北大学サイバーサイエンスセンター
ISSN： 0286-7419
Preface

Zhao Dapeng

Planetary People　21　(2)　93-93　2012/06/25
Publisher: The Japanese Society for Planetary Sciences
ISSN： 0918-273X
月科学の最先端と今後の展望:月はどこまでわかったか?その2 地震波トモグラフィーからわかるProcellarum KREEP Terraneの深部構造

趙大鵬, 荒井朋子

日本惑星科学会誌遊・星・人　20　(1)　2011

ISSN： 0918-273X
Lateral variations in the seismogenic layer beneath the Japan Islands

Ochi Fumiko, Zhao Dapeng

Bulletin of the Earthquake Research Institute, University of Tokyo　76　(1)　145-153　2001
Publisher: The University of Tokyo
ISSN： 0040-8972
中禅寺湖周辺域における地殻構造探査実験

長谷川昭, 堀内茂木, 松澤暢, 西澤あずさ, 松本聡, 堀修一郎, 河野俊夫, 津村紀子, 海野徳仁, 山本明, 趙大鵬, 鈴木将之, 伊東明彦, 野沢康宏, 鈴木貞臣, 岡山宗夫, 佐藤魂夫, 小菅正裕, 井上純, 長谷見晶子, 石井敬久, 小林哲夫, 緒方康浩

東北地域災害科学研究　27　103-106　1991/04
エアガン・ランドエアガンを用いた磐梯山周辺域の地殻構造調査

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

東北地域災害科学研究　25　75-79　1989/04
41B. Shallow Crustal Structure beneath Bandai Volcano Revealed by Refraction Survey Using Air-Gun as a Seismic Source.(Abstracts of Papers Presented at the Fall Meeting of the Society)

Hasegawa A., Horiuchi S., Ueki S., Nishizawa A., Matsuzawa T., Umino N., Hori S., Kono T., Nida K., Inamori T., Hino R., Matsumoto S., Umetsu I., Hashimoto K., Tachibana K., Zhao T., Sato Y., Okubo T., Hamaguchi H., Takagi A., Sato T., Kosuga M., Inoue J., Tanaka K., Hasemi A., Suzuki M., Ito A., Suyehiro K.

Bulletin of the Volcanological Society of Japan. Second series　33　(4)　350-351　1988/12/28
Publisher: Volcanological Society of Japan
ISSN： 0453-4360

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Books and Other Publications 6

Mantle Convection and Surface Expressions

Zhouchuan Huang, Dapeng Zhao

American Geophysical Union　2021/07
Plate Boundaries and Natural Hazards

Jianshe Lei, Dapeng Zhao

American Geophysical Union　2016/08
Multiscale Seismic Tomography

Dapeng Zhao

Springer　2015/03

ISBN: 9784431553601
Topics in Igneous Petrology

Dapeng Zhao, S. Ueki, Y. Nishizono, A. Yamada

Springer　2011/05
Superplumes

Dapeng Zhao

Springer　2007/08
Magmatic Systems

Akira Hasegawa, Dapeng Zhao

1994/08

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Presentations 169

P波方位異方性媒質における3次元波線追跡と日本沈み込み帯のトモグラフィーへの影響

綱嶋椋, 趙大鵬, 豊国源知

日本地球惑星科学連合2025年大会　2025/05/30
Origin of intraplate volcanism and big mantle wedge beneath western Alaska and the Bering Sea

2025/05/26
東日本沈み込み帯の方位異方性トモグラフィー: 3次元波線追跡法の影響

綱嶋椋, 趙大鵬, 豊国源知

2024/10/22
ジャワ沈み込み帯の深部構造と地震火山活動：日本との比較

趙大鵬, Fan Xie, Zewei Wang

日本地震学会秋季大会　2024/10/21
Subslab hot upwelling, slab window and Toba volcano super-eruption

Dapeng Zhao, Hao Hu

2024/05/30
スラブ残骸からの流体と2013年北米上部マントル地震

趙大鵬, Liang Xuran, 豊国源知, Hua Yuanyuan, Xu Yigang

日本地球惑星科学連合2024年大会　2024/05/29
P波方位異方性モデルにおける3次元波線追跡

綱嶋椋, 趙大鵬, 豊国源知

日本地球惑星科学連合2024年大会　2024/05/28
2024年 M7.6能登半島地震震源域の3次元構造探査: 流体の地震発生への影響について

鈴木基矢, 趙大鵬, 豊国源知

日本地球惑星科学連合2024年大会　2024/05/28
Seismic structure and anisotropy of Tohoku forearc: new insight into seismotectonics and subduction dynamics

趙大鵬, 豊国源知, Wang Zewei

American Geophysical Union 2023 Fall Meeting　2023/12/15
S-net・Hi-netの近地・遠地地震データによる日本列島下の3次元P波・S波速度トモグラフィー

鈴木基矢, 趙大鵬, 豊国源知

日本地震学会2023 年度秋季大会　2023/10/31
地震波トモグラフィーから見た地震火山活動と地球内部ダイナミクス Invited

趙大鵬

日本地震学会2023 年度秋季大会　2023/10/31
Whole-mantle P-wave tomography beneath Japan and surrounding regions

高田大輔, 豊国源知, 趙大鵬

日本地球惑星科学連合2023年大会　2023/05/25
S-net海底観測網における遠地地震P波・S波の相対走時残差分布

鈴木基矢, 趙大鵬, 豊国源知, 高木涼太

日本地球惑星科学連合2023年大会　2023/05/21
Slabs, plumes and intraplate volcanism in SE Asia

趙大鵬, 豊国源知, Hua Yuanyuan, Wang Zewei

日本地球惑星科学連合2023年大会　2023/05/25
地震波異方性から見たスラブ内の含水亀裂と地震発生 Invited

趙大鵬, Wang Zewei

日本地球惑星科学連合2023年大会　2023/05/21
S-netデータによる東日本前弧域の構造と地震テクトニクス

趙大鵬, 片山悠, 豊国源知

日本地震学会2022年度秋季大会　2022/10/25
P-wave mantle tomography beneath South America and surrounding regions

Daisuke Takada, Genti Toyokuni, Dapeng Zhao

2022 JpGU annual conference　2022/05/26
P-wave anisotropy and intraslab earthquakes in the Tohoku forearc

Dapeng Zhao, Zewei Wang

2022 JpGU annual conference　2022/05/25
Seismic structure, anisotropy and dynamics of the big mantle wedge

Dapeng Zhao, Ruo Jia

2022 JpGU annual conference　2022/05/23
3-D anisotropic structure of the Cascadia subduction zone

Dapeng Zhao, Y. Hua

2021 Fall Meeting of the Seismological Society of Japan　2021/10/15
Tomography and megathrust earthquakes in the Tohoku forearc

Dapeng Zhao

Japan Geoscience Union Meeting　2021/06/02
Seismic anisotropy of the dipping Pacific slab and adjacent mantle

Dapeng Zhao, Zewei Wang

Japan Geoscience Union Meeting　2021/06/01
P-wave anisotropic structure of the upper mantle beneath Antarctica

Dapeng Zhao, H. Zhang

2021/03/19
S-wave velocity structure of the Tohoku forearc derived from S-net data

Y. Katayama, D. Zhao, G. Toyokuni

2020 Fall Meeting of the Seismological Society of Japan　2020/10/29
3-D structure and seismogenesis in the East Japan forearc derived from S-net data

Dapeng Zhao, Y. Hua, G. Toyokuni, Z. Yu

2020 Fall Meeting of the Seismological Society of Japan　2020/10/29
Whole-mantle P-wave tomography beneath East Asia

Yu Katayama, Dapeng Zhao, Genti Toyokuni

Japan Geoscience Union 2020 Meeting　2020/07/14
Seismic imaging of the Tohoku megathrust zone using S-net and Hi-net data

Dapeng Zhao, Yuanyuan Hua, Genti Toyokuni

Japan Geoscience Union 2020 Meeting　2020/07/14
New insights into East Asian mantle structure and dynamics Invited

Dapeng Zhao

Japan Geoscience Union 2020 Meeting　2020/07/14
Slab structure and large earthquakes in South Alaska

Dapeng Zhao, T. Gou, Z. Huang

2020/03/26
Slab subduction and earthquake-volcano interactions in western Japan

Dapeng Zhao, Xin Liu, Y. Hua

2019 Fall Meeting of American Geophysical Union　2019/12/13
Seismic tomography and anisotropy in the source zone of the 2018 East-Iburi earthquake

Dapeng Zhao, T. Gou, Z. Huang, L. Wang

2019 Fall Meeting of the Seismological Society of Japan　2019/09/17
Deep low-frequency earthquakes, tomography and magmatic system beneath active volcanoes Invited

Dapeng Zhao

Japan Geoscience Union 2019 Meeting　2019/05/29
3-D structure of the great 2011 Tohoku-oki earthquake area

Dapeng Zhao, Xin Liu

Japan Geoscience Union 2019 Meeting　2019/05/27
Deep structure and origin of the intraplate volcanoes in Northeast Asia

Dapeng Zhao

Japan Geoscience Union 2019 Meeting　2019/05/26
Multiscale Seismic Tomography of the Earth and Moon International-presentation

Zhao, D

PIERS 2018　2018/08/01
Seismic imaging of East Asian orogens and subduction zones

Zhao, D

日本地球惑星科学連合2018年大会　2018/05/20
Tottori earthquakes and Daisen volcano: Effects of slab age, slab melting and hot mantle upwelling

D. Zhao, X. Liu, Y. Hua

日本地球惑星科学連合2018年大会　2018/05/20
Seismic imaging of the Asian orogens and subduction zones International-presentation Invited

Zhao, D

アジア造山と大陸変化：地質・地球物理、地球化学研究の最前線　2017/11/06
東北沖巨大地震域の異方性トモグラフィー

趙大鵬, Liu Xin

日本地震学会2017年度秋季大会　2017/10/25
日本列島と東アジア下の太平洋スラブの年齢分布

趙大鵬, Liu Xin, S. Li, W. Wei

日本地震学会2017年度秋季大会　2017/10/25
Anatomy of the source zones of large earthquakes in Japan International-presentation

Zhao, D, Z. Huang, X. Liu

IAG-IASPEI 2017　2017/07/30
Mantle transition zone, stagnant slab and intraplate volcanism in Northeast Asia International-presentation

Zhao, D, C. Chen, Y. Tian, S. Wu, A. Hasegawa, J. Lei, J. Park, I. Kang

IAG-IASPEI 2017　2017/07/30
Seismic anisotropy tomography of the Western Pacific subduction zones International-presentation

Zhao, D, X. Liu, W. Wei

IAG-IASPEI 2017　2017/07/30
Seismic Tomography and Seismotectonics of West Japan to East Asia International-presentation

Zhao, D

Earthquake hazards and tectonics in Southwest Japan　2017/07/16
Detection of Hadean crustal material in the deep Earth and Moon

Zhao, D, Y. Isozaki, S. Maruyama

JpGU-AGU Joint Meeting 2017　2017/05/20

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本人
Earthquake-volcano interactions in the 2016 Kumamoto earthquake area

Zhao, D, Z. Wang, X. Liu, Y. Nishizono, H. Inakura

JpGU-AGU Joint Meeting 2017　2017/05/20

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本人
Mantle transition zone, stagnant slab and intraplate volcanism in Northeast Asia

Zhao, D, C. Chen, Y. Tian, S. Wu, A. Hasegawa, J. Lei, J. Park, L. Kang

JpGU-AGU Joint Meeting 2017　2017/05/20

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本人
Seismic imaging of the subducting Philippine Sea slab

Zhao, D

JpGU-AGU Joint Meeting 2017　2017/05/20

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本人
Mapping the age of the subducting Pacific slab beneath East Asia

Zhao, D, X. Liu, S. Li, W. Wei

JpGU-AGU Joint Meeting 2017　2017/05/20

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本人
2016年熊本震源域の地震波速度と減衰トモグラフィー

趙大鵬

国際火山噴火史情報研究集会　2017/01/22

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本人
2013年米国Wyoming州の上部マントル地震(深さ75 km)について

趙大鵬, X. Wang

日本地震学会2016年秋季大会　2016/10/05

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本人
2016年熊本地震震源域の P 波と S 波トモグラフィー

山下慧, 趙大鵬, 豊国源知

日本地震学会2016年秋季大会　2016/10/05

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本学学生
東北地方における P 波異方性トモグラフィー

山下慧, 趙大鵬, 豊国源知

日本地震学会2016年秋季大会　2016/10/05

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本学学生
スラブ境界域の構造不均質と南海トラフの巨大地震

趙大鵬

南海トラフ巨大地震の予測に向けた観測と研究　2016/09/30

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本人
Seismic tomography and anisotropy: New insight into mantle convection and fluid migration International-presentation

Zhao, D

東北大学「知」のフォーラム2016; New Challenges in Volatile Cycling in the Deep Earth　2016/07/03

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本人
プレート内部活火山下のマントル速度構造

日本地球惑星科学連合2016年大会　2016/05/22

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本人
実体波と表面波データの同時インバージョンから求めた日本列島下の3次元速度構造

日本地球惑星科学連合2016年大会　2016/05/22

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本人
日本海下の深発地震と太平洋スラブ中のmetastable olivine wedge

日本地球惑星科学連合2016年大会　2016/05/22

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本人
東北地方太平洋沖地震域の地震波異方性トモグラフィー

山下慧, 趙大鵬, 豊国源知, 藤澤萌人

日本地球惑星科学連合2016年大会　2016/05/22

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本学学生
Tomography of the source zone of the 2016 South Taiwan earthquake

豊国源知, 趙大鵬, Kate Chen

日本地球惑星科学連合2016年大会　2016/05/22

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その他
Invited Talk: Multiscale Seismic Tomography and Mantle Dynamics International-presentation

Dapeng Zhao

The Earth's Mantle and Core　2015/11/04

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本人
大地震震源域の地震波トモグラフィー研究: 阪神・淡路大震災からの20 年

趙大鵬

日本地震学会2015年秋季大会　2015/10/25

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本人
2015 年小笠原西方沖深発地震域のP 波トモグラフィー

藤澤萌人, 趙大鵬, 豊国源知

日本地震学会2015年秋季大会　2015/10/25

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本学学生
Seismic tomography and mantle dynamics International-presentation

Dapeng Zhao

2015 IAGR Annual Convention & 12th international symposium on Gondwana to Asia　2015/10/22

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本人
西南日本弧のP波とS波減衰トモグラフィー

Liu Xin, 趙大鵬, 西園幸久, 稲倉寛仁

日本地球惑星科学連合2015年大会　2015/05/24

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本人
西南日本前弧域のトモグラフィーと巨大地震の発生機構

趙大鵬, Liu Xin

日本地球惑星科学連合2015年大会　2015/05/24

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本人
西太平洋沈み込み帯の深部構造と異方性

趙大鵬, Wei Wei

日本地球惑星科学連合2015年大会　2015/05/24

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本人
Cape Verdeホットスポットとマントルプルーム

Liu Xin, 趙大鵬

日本地球惑星科学連合2015年大会　2015/05/24

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本人
スラブの深部構造・脱水と長白山火山の起源

Chen Chuanxu, 趙大鵬, Tian You・Lei Jianshe, 長谷川昭, Wu Shiguo, Park Jung-Ho, Kang Ik-Bum

日本地球惑星科学連合2015年大会　2015/05/24

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本人
New Madrid地震帯の地殻と上部マントル構造

Chen Chuanxu, 趙大鵬, Wu Shiguo

日本地球惑星科学連合2015年大会　2015/05/24

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本人
ネパール地震震源域の地震波トモグラフィーと発震構造

2015年ネパール中部地震への被災状況把握と支援に関する緊急シンポジュウム　2015/05/08
Seismic tomography and anisotropy of the Western-Pacific subduction zones

12th International Workshop on WATER DYNAMICS　2015/03/09
四川-雲南とチベット東縁地域の地下構造と地震火山活動

福岡大学国際火山噴火史情報研究所第5回研究集会ならびに第9回西日本火山活動研究集会　2015/02/07
Seismic Velocity and Attenuation Tomography of the Source Zone of the 2011 Tohoku-oki Earthquake (Mw 9.0) International-presentation

AGU Fall Meeting　2014/12/15
四川-雲南とチベット東縁地域の地下構造と地震火山活動

日本地震学会2014年秋季大会　2014/11/24
Studying the lunar interior structure using seismic tomography, geochemistry, gravity and topography International-presentation

Japan Russia Lunar Planetary Workshop　2014/10/21
Megathrust-Zone Heterogeneity and Megathrust Earthquakes International-presentation

AOGS2014　2014/07/28
Deep Structure of the Subducting Philippine Sea Slab International-presentation

AOGS2014　2014/07/28
日本沈み込み帯の流体と地震

日本地球惑星科学連合2014年大会　2014/04/28
長白山火山とその付近の深発地震との関係

日本地球惑星科学連合2014年大会　2014/04/28
2011年東北沖巨大地震域の地震波速度と減衰構造

日本地球惑星科学連合2014年大会　2014/04/28
Interior structure of the Moon - constraints from seismic tomography, gravity and topography International-presentation

EGU2014　2014/04/27
日本の火山と長白山火山の深部構造とマグマ活動に関する新知見

第8回西日本火山活動研究集会「モニタリングとカルデラ噴火」　2013/12/14
Outer-rise 地震, プレート含水, 深発地震と長白山火山について

日本地震学会2013年秋季大会　2013/10/07
北海道と東北日本前弧域の構造不均質と巨大地震の発生機構

日本地震学会2013年秋季大会　2013/10/07
Mantle tomography and dynamics of the Western-Pacific subduction zones International-presentation

IAVCEI2013　2013/07/20
Changbai volcano: seismic tomography, origin and East-Asia tectonics International-presentation

IAVCEI2013　2013/07/20
New mantle tomography of East Asia: Insight into slab subduction and intraplate volcanism

日本地球惑星科学連合2013年大会　2013/05/23
日本沈み込み帯のＰ波異方性トモグラフィー

日本地球惑星科学連合2013年大会　2013/05/22
Megathrust-zoneの構造不均質と巨大地震の発生機構

日本地球惑星科学連合2013年大会　2013/05/22
フィリピン海プレートの深い沈み込み

日本地球惑星科学連合2013年大会　2013/05/22
Seismic imaging of subducting slabs and mantle upwelling International-presentation

Neutrino Geoscience 2013　2013/03/21
Seismic tomography of lunar crust and mantle: Insight into PKT and deep moonquakes: International-presentation

SELENE Symposium 2013　2013/01/23
西南日本下のフィリピン海スラブは深さ460 km まで沈み込んでいる

日本地震学会2012年秋季大会　2012/10/16
Mantle tomography and dynamics of the Western-Pacific and East-Asia regions International-presentation

Global COE Program Symposium 2012　2012/09/25
Mechanism of the 2011 Tohoku-oki earthquake (Mw 9.0) sequence: Insight from International-presentation

Global COE Program Symposium 2012　2012/09/25
Tomography of the Northeast Japan arc and mechanism of the 2011 Tohoku-okiearthquake (Mw 9.0) sequence International-presentation

The 8th APRU Research Symposium　2012/09/20
Seismic imaging of the western Pacific and East-Asia regions International-presentation

Conference on Geophysics of Slab Dynamics　2012/08/20
Seismic tomography of the lunar interior International-presentation

Seminar on lunar and planetary geodesy　2012/06/19
西太平洋と東アジア地域のマントルトモグラフィーとダイナミクス

日本地球惑星科学連合2012年大会　2012/05/20
波線トモグラフィーと有限周波数トモグラフィーの比較研究

日本地球惑星科学連合2012年大会　2012/05/20
地震波トモグラフィーから見た2011 年東北沖巨大地震系列の発生機構

日本地球惑星科学連合2012年大会　2012/05/20
アラスカ沈み込み帯の構造不均質と地震波異方性

極域における固体地球の振動特性・不均質構造・ダイナミクス解明に関する研究集会　2012/03/14
Mechanism of the 2011 Tohoku-oki Earthquake: Insight from Seismic Tomography International-presentation

One Year after 2011 Great East Japan Earthquake　2012/03/03
2011年東北沖巨大地震震源域の構造不均質と発生機構

平成23年度東北地域災害科学研究集会　2012/01/07
Multiscale seismic imaging of the Western-Pacific subduction zone International-presentation

AGU Fall Meeting　2011/12
Tomography of the megathrust zone and mechanism of the Tohoku-oki earthquake (Mw 9.0) International-presentation

AGU Fall Meeting　2011/12
東北日本弧の構造不均質, 異方性と地震テクトニクス

日本海溝-東北日本-日本海システム研究ワークショップ　2011/11/25
Seismotectonics, Volcanism and Mantle Dynamics of East Asia International-presentation

10th International Seminar on Seismology(One of CTBT Verification Technologies)-related Works in Far-East Asia　2011/10/31
2011年東北沖巨大地震震源域のトモグラフィーと発生機構

日本地震学会2011年秋季大会　2011/10/12
Seismic imaging of the Japan subduction zone International-presentation

Workshop on Ocean Mantle Dynamics:from Spreading Center to Subduction Zone　2011/10/05
地震と火山の相互作用について

日本火山学会2011年秋季大会　2011/10/02
日本海東縁地域のＰ波とＳ波トモグラフィー

日本地球惑星科学連合2011年大会　2011/05/22
全マントル構造不均質の遠地地震トモグラフィーへの影響について

日本地球惑星科学連合2011年大会　2011/05/22
マントルの不均質構造と異方性のイメージング

日本地球惑星科学連合2011年大会　2011/05/22
東アジア地域の地震テクトニクス、火山の起源とマントルダイナミクス

日本地球惑星科学連合2011年大会　2011/05/22
日本列島と東アジアのマントル構造とダイナミクス：Big mantle wedge (BMW)モデル

日本海溝-東北日本-日本海システム研究ワークショップ　2010/11/26
Dissecting the seismogenic zones in Japan, China and India International-presentation

China-Japan Joint Workshop on Inland Earthquakes　2010/11/24
東アジアBig mantle wedge の西端：華北クラトンの地震構造とテクトニクス

日本地震学会2010年秋季大会　2010/10
Tomographic imaging of Earth and Moon International-presentation

G-COE Symposium 2010 Dynamic Earth and Heterogeneous Structure　2010/07
月内部の構造不均質と深発月震及び月表面のトリウム分布との関係

日本地球惑星科学連合2010年大会　2010/05
SELENE-2月広帯域地震計の進捗

日本地球惑星科学連合2010年大会　2010/05
sP波トモグラフィーによる日本海東縁地域の地殻構造

日本地球惑星科学連合2010年大会　2010/05
東アジア下のbig mantle wedgeとスラブの深部脱水：地震学的証拠

日本地球惑星科学連合2010年大会　2010/05
西太平洋地域のマントル構造とダイナミクス

日本地球惑星科学連合2010年大会　2010/05
Seismic structure and dynamics of the Western-Pacific subduction zones International-presentation

G-COE symposium 2010: Earthquakes, Active Tectonics and Geodynamics of Island Arcs　2010/02
Big Mantle Wedge model in East Asia International-presentation

AGU Fall Meeting　2009/12
2008年M8四川省大地震について

趙大鵬, 雷建設

日本地震学会2009年秋季大会　2009/10
Multiscale seismic tomography of slabs and mantle plumes International-presentation

ILP Joint Task Force Meeting　2009/10
Multiscale seismic tomography of slabs and mantle plumes International-presentation

International Symposium on Large Igneous Provinces of Asia, Mantle Plumes and Metallogeny　2009/08
惑星の地震波トモグラフィー：地球と月

日本地球惑星科学連合2009年大会　2009/05
東アジア地域の地震波トモグラフィー

日本地球惑星科学連合2009年大会　2009/05
南極と北極地域の地震波トモグラフィーとマントルダイナミクス

趙大鵬, 山本芳裕, 金尾政紀, 山田朗

日本地球惑星科学連合2009年大会　2009/05
East Asia: Slabs, Volcanoes & Dynamics International-presentation

GCOE International Symposium Circum-Pacific Subduction Zones　2009/02
Detecting the metastable olivine wedge in the subducting Pacific slab under Japan Sea International-presentation

Zhao, D, G. Jiang, G. Zhang

ASC-SSJ合同大会　2008/11

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11/24~27 Tsukuba International Congress Center (EPOCHAL TSUKUBA) 7th General Assembly of Asian Seismological Commission and Seismological Society of Japan, 2008 Fall meeting
長白山型火山とその世界的分布

趙大鵬, 山本芳裕

日本火山学会2008年度秋季大会　2008/10

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10/10～10/12 於：岩手大学
南極と北極地域の地震波トモグラフィーとマントル構造

趙大鵬, 山本芳裕, 金尾政紀, 山田朗

第28回極域地学シンポジウム　2008/10

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10/16～10/17 於：国立極地研究所
後続波は地震波トモグラフィーにとっても重要である

趙大鵬, 海野徳仁, 長谷川昭

日本地球惑星科学連合2008年大会　2008/05
東アジア大陸内部の活火山の深部構造と起源

趙大鵬, 植木貞人, 太田雄策

日本地球惑星科学連合2008年大会　2008/05
Potential of seismic tomography for understanding subduction zone tectonics International-presentation

6th International Tectonics Meeting　2008/02
西太平洋沈み込み帯の浅部と深部構造

趙大鵬, 植木貞人, 海野徳仁, 長谷川昭

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
Global seismic tomography and mantle dynamics International-presentation

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

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Sendai City War Reconstruction Memorial Hall
Multiscale seismic tomography of subduction zones International-presentation

Subduction Zone Geodynamics　2007/06
sP depth phaseを用いた日本列島周辺海域の三次元構造決定

趙大鵬, 海野徳仁, 長谷川昭

日本地球惑星科学連合2007年大会　2007/05
地球内部のmulti-scaleイメージとダイナミクス

趙大鵬, 長谷川昭, 大谷栄治

日本地球惑星科学連合2007年大会　2007/05
速度境界を考慮したdouble-difference tomography

趙大鵬, 江国明, 田有, 長谷川昭

日本地球惑星科学連合2007年大会　2007/05
Ehime-2006モデルから見たウラル山脈下の深部構造

趙大鵬, 山田朗, 趙ルーシー

日本地球惑星科学連合2007年大会　2007/05
Tomographic imaging of subduction zones International-presentation

Subduction Dynamics: Bridging the Scales　2007/05

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Germany
西太平洋島弧と東アジア地域の地下構造と地震火山活動

趙大鵬

西日本火山活動研究集会　2007/03
世界最新の高分解能地震波トモグラフィー法の開発とその応用

愛媛大学研究開発支援公開シンポジウム　2007/02
Seismic images of active upwellings and intraplate volcanism International-presentation

AGU Fall Meeting　2006/12
Seismic structure and dynamics of the Eurasian continent International-presentation

D. Zhao

International Symposium for the 50th Anniversary of the Chinese Academy of Geological Science　2006/10

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Chinese Academy of Geological Science
ユーラシア大陸のマントル構造と地震・火山活動

趙大鵬, 山田朗

日本地震学会秋季大会　2006/10
地震波トモグラフィー研究の最新展開 International-presentation

21世紀COE先端地球惑星科学セミナー　2006/09/12

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セミナー講演
Global seismic tomography: Implications for global mass circulation International-presentation

D. Zhao

International Symposium “Accretionary Orogens and Continental Growth”　2006/09
3-D crust and mantle structure of East Asia margin International-presentation

D. Zhao

日本地質学会2006年年会　2006/09

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高知大学
Seismic images of mantle plumes, subducting slabs and core-mantle boundary International-presentation

Goldschmidt Conference　2006/09
Mantle structure and intraplate volcanism and tectonics in Eastern Eurasia International-presentation

D. Zhao

AGU Western Pacific Geophysics Meeting　2006/08

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Beijing International Convention Center
全地球地震波トモグラフィー：Ehime-2006モデル

趙大鵬, 山田朗, 趙ルシー, 入舩徹男

地球惑星合同大会　2006/05
Multiscale seismic tomography: Insight into seismotectonics, volcanism, and deep Earth dynamics International-presentation

D. Zhao

The Kanamori symposium　2006/02
Seismic tomography of mantle plumes, subducting slabs and core-mantle boundary International-presentation

International Workshop on Post-Perovskite　2005/10
Multiscale seismic tomography of mantle plumes and subducting slabs International-presentation

D. Zhao

Chapman Conference: The Great Plume Debate　2005/08
Multiscale seismic tomography of the Earth International-presentation

D. Zhao

21-COE International Symposium　2005/07
Multi-scale seismic tomography: insight into seismotectonics, volcanism and deep Earth dynamics International-presentation

D. Zhao

International Workshop on Continental Lithosphere　2005/06

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2005.6.25~6.27
Structure and dynamics of island arcs and continental margins International-presentation

D. Zhao

The 5th IPACES International Workshop　2005/06

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2005.6.20～6.24
Structure, seismicity and volcanism of the North China region International-presentation

D. Zhao

The Great North China Symposium　2005/06

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2005.6.16～6.17
Deep structure and its relationship to seismic and volcanic activity in East Asia International-presentation

International Symposium on East Asia Structure and Tectonics　2002/06

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Tongji University
The 2001 Geiyo earthquake and the structure of the warm Philippine Sea slab under Southwest Japan International-presentation

Annual Meeting of Seismological Society of America　2002/04

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Victoria City Hall
A new tomography of the mantle: Slicing plumes and superplumes International-presentation

International Symposium on Superplumes　2002/01

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Research Projects 15

Tomographic imaging of large earthquake source zones

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

2019/04 - 2024/03
post-Hadean

Isozaki Yukio, Sano Yuji, Dapeng Zhao

Offer Organization: Japan Society for the Promotion of Science

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

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

Institution: The University of Tokyo

2014/07 - 2019/03

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More than 200 grains of Hadean zircons (the Earth’s oldest material) were captured by a newly made machine, Automatic Zircon Separator, and by U-Pb dating. By comparing these with lunar rocks, we obtained the first solid evidence for the ABEL bomberdment that occurred in the near-Sun domain of the early Solar System. We could detect also bio-essential elements, such as carbon, in zircons, which suggest the readiness of the Earth’s surface to beget life already at 4.37 Ga or earlier. The high-resolution visualization of 3D heterogeneity of mantle became possible by seismic tomography analysis. Possible remnants of hadean crust were detected in the bottom of mantle. A sharp signal of extraterrestrial material flux was detected from 250 Ma deep-sea strata, and this first enables the same from the material of the Hadean, during which more frequent flux is assumed in the early Solar System.
Growth of the second continent and mantle dynamics: Insights from a history of continental growth and tectonic erosion

Maruyama Shigenori, YOKOYAMA Tetsuya, KAWAI Kenji, SENSHU Hiroki, ZHAO Dapeng, OMORI Soichi, KOMABAYASHI Tetsuya

Offer Organization: Japan Society for the Promotion of Science

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

Category: Grant-in-Aid for Scientific Research (S)

Institution: Tokyo Institute of Technology

2011/04 - 2016/03

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This research demonstrates the presence of the second continent in the mantle transition zone, equivalent to ten times the volume of the continent. This is based on the quantitative evaluation of tectonic erosion through time and both the growth mechanism of granitic crust and quantification of its generation also through time. Furthermore, we revealed the history of dispersion and amalgamation of the 1.8 Ga supercontinent by radioactive heat effect of the third continent, and obtained evidence which strongly indicates that the third continent (fallen primordial continent, particularly KREEP basalt) is the main constituent of the “D” layer. Lastly, we proposed the model combining the three-layer model and the Earth history to systematize the mantle dynamics including that of the second continent. This model is to steer the research regarding the mechanism to generate the liquid core, which has not been unraveled by numerical computation of Earth’s convection, in a new direction.
Study of the fine structure and mantle dynamics under East Asia

ZHAO Dapeng, YAMADA Akira

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)

2005 - 2008
Searching mineralogy of the Earth's deep interior using a combination of synchrotron radiation and high-pressure technology

IRIFUNE Tetsuo, INOUE Toru, TSUCHIYA Taku, OHFUJI Hiroaki, YAMADA Akira, HIGO Yuji

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

Category: Grant-in-Aid for Creative Scientific Research

Institution: Ehime University

2003 - 2007

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Technical developments have been made in producing higher pressures in multianvil apparatus using sintered diamond (SD) anvils and also for precise measurements of sound velocities of high-pressure phases under the P/T conditions of the mantle transition region. We succeeded to produce pressures as high as〜80 GPa at room temperature using SD anvils, while pressures have been limited to〜60 GPa at the high temperatures relevant to the Earth's mantle. Some new phase transitions have been found in mantle minerals under the conditions of the lower mantle, and precise determination of the P-V-T relations of these and other high-pressure phases have been conducted under the corresponding P, T conditions. On the other hand, precise measurements of sound velocities have been made at pressures to〜20GPa and temperatures to〜1700K, equivalent to those of the depths of the middle part of the mantle transition region. Using this technique; measurements on ringwoodite and majorite in a pyrolite composition, polycrystalline MgO, and the garnetite (majorite + stishovite) in a basaltic composition have been made, which provided important data sets to constrain the mineralogy of the mantle transition region and to provide a new self-consistent pressure scale. In addition to these studies, we have tested the performance of the newly produced nano-polycrystalline diamond (HIME-DIA) for high-pressure devices, and found the great potential of this novel material for anvils for both multianvil apparatus and diamond anvil cell, which yielded the highest pressures of〜110 Gpa and〜20 Gpa, respectively.
ホットスポットの起源

高橋栄一, 廣瀬敬, 平田岳史, 金嶋聡, 趙大鵬, 木村純一, 内海渉

Offer Organization: 日本学術振興会

System: 科学研究費助成事業特別推進研究

Category: 特別推進研究

Institution: 東京工業大学

2000 - 2004

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高橋、平田、木村はマントルプルームの構成物質、温度、マグマの多様性を生ずる原因などを解明する目的でハワイホットスポット火山の研究を引き続き行い、プルーム中心からの火山距離に従ってマグマ組成が系統的に変化することを明らかにした(Ren、Takahashi,2004、2005)。さらにメルト泡有物の微量元素分析から、マグマの生成がプルーム内部に含まれるエクロジャイト成分に大きく依存し、火山の位置によるマグマ組成変化は、プルーム温度構造によるエクロジャイト成分とカンラン岩成分のマグマへの寄与の差であることを世界で始めて明らかにした(Ren, Takahashi Hirata, Natureに印刷中2005)。さらに高橋らは、エクロジャイトのマントル深部での密度を精密に決定するため、構成物質の量比の温度変化を相平衡実験で決定し(Aoki and Takahashi,2004)、エクロジャイト成分を構成する各種鉱物の弾性的性質をSPRING-8の放射光施設でX線その場観察により決定した(Nishihara, Takahashi.,2004a, b, c、2005a, b)。一方、広瀬は、マントルプルーム発生場である、下部マントル最下部および地球中心核の化学組成を解明するために単結晶ダイヤモンドアンビル装置を用いて200万気圧に達する高圧実験を成功させ、外核に数%の酸素が溶け込んでいることの初めての実験的証拠を見出し(Takafuji & Hirose,2004)また核に接するマントル最下部はMgSiO3ペロフスカイトがさらに相転移した高圧相でできていることを世界で始めて明らかにした(Murakami Hirose 2004 Science)。さらに金嶋と趙は地震学によりマントルプルームの深部構造および核の内部構造の研究に世界で始めて成功させた(Helffrich and Kaneshima,2004 Science)。
Study on stresss concentration mechanism on active faults

HASEGAWA Akira, OKADA Tomomi, MATSUZAWA Toru, UMINO Norihito, DAPENG Zhao, MATSUMOTO Satoshi

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

Category: Grant-in-Aid for Scientific Research (B)

Institution: Tohoku University

1999 - 2002

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We have performed a detailed investigation on inhomogeneous structure of the crust around active faults aiming to improve our understanding of stress concentration mechanism on active faults. Moreover, we have investigated focal mechanisms and source processes of events occurring along active faults. Seismic tomography studies revealed a partial melting zone extensively distributed beneath the Moho along the volcanic front. GPS observations show that a zone of large ocontraction deformation in the plate conversion direction is distributed also along the volcanic front. Large earthquake focal areas are distributed aroud this large contraction deformation zone. These observations suggest that fluids in the crust play an important role in the deformation process of the arc crust and in the earthquake generation within it.
3-D Seismic velocity structure and stress regime under Japan Islands

ZHAO Dapeng

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: Ehime University

1999 - 2002

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We have used seismic tomography to study the 3-D crust and mantle structure and seismotectonics of the Japan Islands. A close relationship between large crustal earthquakes and structural heterogeneities is revealed. Most of the large crustal earthquakes occurred in or around the areas of low velocity that represent weak sections of the seismogenic crust. In volcanic areas the crustal weakening is caused by active volcanoes and arc magma. In forearc areas fluids are suggested in the large earthquake source zones, which have contributed to the rupture nucleation. The fluids originate from the dehydration of the subducting Philippine Sea slab. These results indicate that large earthquakes do not strike anywhere, but only anomalous areas which can be detected with geophysical methods. A new approach was used to conduct global tomographic inversions to study the deep structure of subducting slabs and mantle plumes. Strong and wide fast anomalies are visible in the transition zone depths under subduction regions, which suggests that most of the slab materials are stagnant in the transition zone before finally collapsing down to the lower mantle. Plume- like slow anomalies are clearly visible under the major hotspot regions in most parts of the mantle, in particular, under Hawaii, Iceland, South Pacific and Africa. The slow anomalies under hotspots usually do not show a straight pillar shape, but exhibit winding images, suggesting that plumes are not fixed in the mantle but can be deflected by the mantle flow. As a consequence, hotspots are not really fixed but can wander on the surface.
地殻・上部マントルにおける応力場に関する研究 Competitive

1995 - 2000
Stress field in the crust and upper mantle Competitive

1995 - 2000
地震・火山・地球内部構造 Competitive

System: The Other Research Programs

1991/04 -
地震波トモグラフィーに関する研究 Competitive

1988 -
A study of seismic tomography Competitive

1988 -
Studying the Earth's Interior Structure and Earthquake Generating Mechanism using seismological Methods Competitive

1986 -
地震学的手法を用いた地球内部構造と地震発生機構の研究 Competitive

1986 -

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Works 6

Seismological Observation and investigation in the central Tohoku region, Japan

1998 -
Seismological Observation and investigation in the central Tohoku region, Japan

1998 -
東北地方中央部における地震観測と調査研究

1998 -
東北地方脊梁山地における地震学的観測と調査

1997 -
Observation and Investigation of Seismic activity in Sekiryo mountain region, Japan

1997 -
Observation and Investigation of Seismic activity in Sekiryo mountain region, Japan

1997 -

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Social Activities 4

建築研究所国際地震工学研修

2017/04/24 -

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講演者：趙大鵬講演タイトル「Tomography and dynamics of Western-Pacific subduction zones」
建築研究所国際地震工学研修

2016/03/10 -

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講演者：趙大鵬講演タイトル「Tomography and dynamics of Western-Pacific subduction zones」
建築研究所国際地震工学研修

2015/05/19 -

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講演者：趙大鵬講演タイトル「Tomography and dynamics of Western-Pacific subduction zones」
建築研究所国際地震工学研修

2014/05/15 -

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講演者：趙大鵬講演タイトル「Tomography and dynamics of Western-Pacific subduction zones」

Media Coverage 21

趙大鵬先生に会いに行く

日々の新聞社　日々の新聞　トップ１面

2024/04/30

Type: Newspaper, magazine
その地震、原因は「水」?

毎日新聞

2023/09/06

Type: Newspaper, magazine
M9以上の巨大地震発生箇所、プレート下に異常構造、東北大グループが発見

科学新聞社　科学新聞　トップ1面

2021/05/21

Type: Newspaper, magazine
巨大地震の一因に異常マントル構造

河北新報社　河北新報

2021/04/27

Type: Newspaper, magazine
理工系大学ランキング

ニュートンNewton　ニュートンNewton

2021/03/26

Type: Newspaper, magazine
東北大、日本地下の3次元地震波異方性構造を解明

日本経済新聞社　日本経済新聞

2021/01/21

Type: Newspaper, magazine
「軟らかい岩石」大津波の一因

読売新聞社　読売新聞

2020/05/31

Type: Newspaper, magazine
＜熊本地震＞震源直下の水で揺れ拡大、断層の摩擦減少、東北大グループが分析

河北新報社　河北新報

2018/11/02

Type: Newspaper, magazine
巨大地震は岩板の固さが引き金か、太平洋沖の海底下を探る

産経新聞社　産経新聞

2018/09/23

Type: Newspaper, magazine
巨大災害ＭＥＧＡＤＩＳＡＳＴＥＲ地球大変動の衝撃第３集巨大地震見えてきた脅威のメカニズム

NHK

2014/09/20

Type: TV or radio program
独占インタビュー原発の地下に地震の巣を発見

週刊現代　週刊現代

2012/03/15

Type: Newspaper, magazine
地震のツメ痕を徹底検証断層内部の水が原因

テレビ朝日

2012/02/19

Type: TV or radio program
同じ地下構造ではM7の地震が・・・福島第一原発“直下型地震”の懸念

フジテレビ

2012/02/16

Type: TV or radio program
地下で異変？福島原発で直下型地震の危険

テレビ朝日

2012/02/16

Type: TV or radio program
福島第1原発の直下で地震もいわきと地下構造類似

2012/02/15

Type: Other
福島第１原発の直下で地震も東北大教授ら専門誌で発表「地下深部から水」

河北新報

2012/02/15

Type: Newspaper, magazine
Fukushima at increased earthquake risk

New Release at the top page of the European Geosciences Union (EGU)

2012/02/14

Type: Other
原発直下で地震の恐れも深部から水供給

産経ニュース

2012/02/14

Type: Other
宮城沖「震源になりやすい」

朝日新聞

2011/10/13

Type: Newspaper, magazine
プレートのゆくえ① 大陸地下へ1000キロもぐる

朝日新聞

2006/11

Type: Newspaper, magazine
地震発生地域の予測は可能

高知新聞社　高知新聞

1999/03/30

Type: Newspaper, magazine

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Other 8

長白山火山の起源の研究

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長白山火山の起源の研究
東アジア地域の地震・火山の研究

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東アジア地域の地震・火山の研究
地震波トモグラフィーによる地殻構造推定技術の高度化

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火山体下のマグマ溜りや内陸地震断層などの地殻構造異常体をより高い精度で推定するために、地震波トモグラフィー解析技術を高度化する。特に地殻と上部マントル内の反射波や変換波などの後続地震波データを用いた日本列島及びその周辺海域下の地殻トモグラフィーの解析法を検討する。
中国南海地域の地下構造

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中国南海地域の地下構造
マントルプルームのトモグラフィー

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マントルプルームのトモグラフィー
東アジア地域の地下構造

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東アジア地域の地下構造
アラスカ沈み込み帯の構造とダイナミクス

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アラスカ沈み込み帯の構造とダイナミクス
インド地域の地下構造と地殻大地震の発生機構

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インド地域の地下構造と地殻大地震の発生機構

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