AIST

産業技術総合研究所 活断層・火山研究部門
地震テクトニクス研究グループ
Seismotectonics Research Group, Research Institute of Earthquake and Volcano Geology, GSJ / AIST

お知らせ
LATEST INFORMATION


2024-10-28
論文発表のおしらせです.
An article was published.
Yasunori Sawaki, Yoshihiro Ito, Emmanuel Soliman M. Garcia, Ayumu Miyakawa, and Takuo Shibutani
Deep plutonic bodies over low-frequency earthquakes revealed from receiver-side Green's functions, Tectonophysics, Volume 892, 6 December 2024, 230536,(Open Access)
 https://doi.org/10.1016/j.tecto.2024.230536
2024-10-23
日本地震学会秋季大会(新潟10月21日‐23日)に参加しました.(内出, 椎名,寒河江,佐脇, Admore)
Joined the Fall Meeting of the Seismological Society of Japan in Niigata. (Uchide, Shiina, Sagae, Sawaki and Admore)
2024-09-19
International Workshop on Slow-to-Fast Earthquakes 2024(別府)に参加しました.(寒河江,佐脇)
Joined International Workshop on Slow-to-Fast Earthquakes 2024  (Beppu). ( Sagae, Sawaki)
2024-09-08
日本地質学会第131年学術大会(山形)に参加しました.(大橋,喜多,大森)
Joined the 131th Annual Meeting of the Geological Society of Japan (Yamagata). ( Ohashi, Kita, and Omori)
2024-07-23
Takahiro Shiina, Yuta Amezawa, Haruo Horikawa, Kazutoshi Imanishi, Takahiko Uchide, Deep crustal fluids and their relation to cutoff depths of crustal earthquakes in the North Ibaraki area of northeastern Japan inferred from reflected S-waves, Tectonophysics, Volume 885, 22 August 2024, 230415,
https://doi.org/10.1016/j.tecto.2024.230415
2024-05-31
日本地球惑星科学連合2024年大会(千 葉 5月26日-31日に参加しました. (高橋,重松,堀川, 浦田,椎名, 寒河江, 佐脇, Admore)
JpGU Meeting 2024 in Chiba on May 26-31 (Takahashi, Shigematsu, Horikawa, Urata, Shiina, Sagae, Sawaki, and Admore)
2024-04-11
Manami Kitamura, Miki Takahashi, Norio Shigematsu, Slow failure during faulting and formation of a porous framework under hydrothermal conditions: Role of feldspar sintering in granitoids,Geothermics,Volume 120, 2024, 102995,
https://doi.org/10.1016/j.geothermics.2024.102995
2024-04-11
Qi Wang , Takamoto Okudaira, Norio Shigematsu, 2024, Dominant slip systems of quartz under lower amphibolite-facies conditions identified from microstructures and CPOs in quartz phenocrysts. Journal of Structural Geology, 105106/
https://doi.org/10.1016/j.jsg.2024.105106
2024-02-07
Takayuki Nagata, Yusuke Mukuhira, Jingyi Sun, Hirokazu Moriya, Takahiro Shiina, Taku Nonomura 
Polarization Analysis in Time–Frequency Domain by Complex Spectral Matrix: Application to Various Phases of Seismogram, IEEE Transactions on Geoscience and Remote Sensing, Volume 62, 2024, 5903915,
https://doi.org/10.1109/TGRS.2024.3352817
2023-01-24
AGU Fall Meeting 2023(サンフランシスコ)に参加しました.(椎名,寒河江,佐脇)
Joined AGU Fall Meeting 2023 (San Franscisco, CA). (Shiina, Sagae, and Sawaki)
2023-11-02
日本地震学会秋季大会(横浜)に参加しました.(堀川,浦田,椎名,寒河江,佐脇)
Joined the Fall Meeting of the Seismological Society of Japan in Yokohama. (Horikawa, Urata, Shiina, Sagae, and Sawaki)
2023-09-21
論文発表のおしらせです.
An article was published.
Thomas Yeo, Norio Shigematsu, Takuma Katori
Dynamically recrystallized grains identified via the application of Gaussian mixture model to EBSD data, Journal of Structural Geology, Volume 167, 2023, 104800, ISSN 0191-8141, https://doi.org/10.1016/j.jsg.2023.104800
2023-09-19
地質情報展/日本地質学会秋季大会(京都)に参加しました.(堀川,内出,Yeo)
Joined the Fall Meeting of the Geological Society of Japan (Kyoto). (Horikawa, Uchide, and Yeo)
2023-09-15
International Workshop on Slow-to-Fast Earthquakes (東京)に参加しました.(高橋,内出,寒河江,佐脇,Yeo)
Joined the International Workshop on Slow-to-Fast Earthquakes in Tokyo. (Takahashi, Uchide, Sagae, Sawaki, and Yeo)
2023-09-01
雨澤勇太特別研究員が東京工業大学に異動いたしました.
AMEZAWA Yuta, postdoctorial researcher, moved to Tokyo Institute of Technology.
2023-06-30
人工知能学会全国大会(熊本)に参加しました.(内出)
Joined JSAI 2023 in Kumamoto. (Uchide)

研究
RESEARCH

地震テクトニクス  地震テクトニクス研究グループでは,地震観測・解析,過去深部にあった断層帯の地質調査,室内岩石実験,数値シミュレーション,などの研究を有機的に連 携させて,地震が発生する場や発生にいたるプロセスを解明する研究に取り組んでいます.
 関東地域における地震テクトニックマップを公表し,現在は,中国地域における地震テクトニックマップの作成と,今後いち早く全国整 備を終えるために,地震解析の加速化の研究を行っています.また,脆性から塑性に至る断層変形プロセスの解明,プレート境界地震と内 陸地震の相互作用を考慮したサイクルシミュレーターの開発にも取り組んでいます.
 これらの研究を通して,物理モデルに基づいた地震の規模と発生時期の予測技術の確立を目指しています.
seismotectonics  Our group aims to elucidate the physical and mechanical properties of the seismogenic zone, and the generation processes of large earthquakes, by linking seismological observations and data analysis, geological studies of exhumed faults, laboratory experiments, and numerical modelings.
 We have published the seismotectonic map of the Kanto region, and are currently constructing a seismotectonic map of the Chugoku region (SW Japan) based on detailed knowledge of local stress fields. We also aim to accelerate seismic data processing in order to complete seismotectonic maps for all regions of Japan. Furthermore, we are studying the deformation processes operating within fault rocks under conditions spanning the brittle to ductile regimes, and we are developing simulation techniques by integrating the interaction between subduction-zone - and inland earthquakes.
 Our studies provide a basis for improving accuracies of long-term forecasting and evaluation of the magnitudes of future earthquakes.
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