Member Since 1995
Shuichi Kodaira
Director-general, JAMSTEC Japan Agency for Marine-Earth Science and Technology
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The geometry change of the subducting oceanic plate and its relation to the formation of the mega-splay fault and interplate seismic activities in Nankai Trough
AGU 2024
tectonophysics | 13 december 2024
Gou Fujie, Kazuya Shiraishi, Takeshi Sato, Yanfang...
The Nankai subduction zone off Kumano is one of the most extensively studied seismogenic subduction zones in the world. Many 2-D MCS, 2-D OBS and 3-D ...
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Precise aftershock activity by rapid response seafloor observation in the eastern source region of the 2024 Noto-Hanto earthquake using ocean bottom seismometers
AGU 2024
natural hazards | 13 december 2024
Masanao Shinohara, Ryota Hino, Tsutomu Takahashi, ...
The 2024 Noto-Hanto earthquake with a Japan Meteorological Agency (JMA) magnitude of 7.6 occurred in the Noto peninsula on January 1st, 2024. The main...
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High-resolution seismic velocity imaging at the tremor-to-trench area in the westernmost Nankai Trough, southwest Japan
AGU 2024
seismology | 12 december 2024
Ryuta Arai, Kazuya Shiraishi, Yasuyuki Nakamura, G...
Slow earthquakes that occur in the shallow sections of subduction faults (< ~10 km depth) are increasingly documented worldwide. These events are b...
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Wedge deformation from sequential seamount subduction in the Nankai Trough off Muroto and its implications to shallow slow earthquake activity
AGU 2024
seismology | 12 december 2024
Paul Caesar Flores, Shuichi Kodaira, Gaku Kimura, ...
The occurrence of shallow slow earthquakes has been attributed to different factors such as seamount subduction, pore fluid pressure, fluid migration,...
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The Sofu Seamount Submarine Volcano Present in the Source Area of the October 2023 Earthquakes and Tsunamis in Japan
AGU 2024
volcanology, geochemistry and petrology | 11 december 2024
Toshiya Fujiwara, Kentaro Imai, Masayuki Obayashi,...
On October 8, 2023 (UTC), unique earthquakes occurred in the Izu-Ogasawara Arc, Japan, in which the P- and S-phases were barely visible and only the T...
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A physical explanation for an unusually long-duration slow slip event in the Nankai Trough
AGU 2024
geodesy | 09 december 2024
Keisuke Ariyoshi, Akira Nagano, Takuya Hasegawa, T...
JAMSTEC has found changes in pore pressure from boreholes, identifying these as Slow Slip Events (SSEs) near the 1944 Tonankai earthquake area, which ...
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From Symmetric Rifting to Asymmetric Spreading—Insights Into Back‐Arc Formation in the Central Mariana Trough
GEOCHEMISTRY, GEOPHYSICS, GEOSYSTEMS
07 november 2024
Helene-Sophie Hilbert, Christian Berndt, Anke Dann...
The Mariana Trough is the youngest back‐arc basin in a series of basins and arcs that developed behind the Mariana subduction zone in the wes...
Shear‐Dominant Continental Rifting in Northern Ryukyu Revealed by Ambient Noise Tomography
JOURNAL OF GEOPHYSICAL RESEARCH: SOLID EARTH
31 october 2024
Kai Xun Chen, Ryuta Arai, Yuancheng Gung, Kate Hui...
In this study, we reveal the deformational structure of the crust of the northern part of the Ryukyu Arc and Okinawa Trough using ambient noise tom...