Japan Geoscience Union Meeting 2019

Presentation information

[E] Poster

M (Multidisciplinary and Interdisciplinary) » M-IS Intersection

[M-IS04] Interdisciplinary studies on pre-earthquake processes

Thu. May 30, 2019 5:15 PM - 6:30 PM Poster Hall (International Exhibition Hall8, Makuhari Messe)

convener:Katsumi Hattori(Department of Earth Sciences, Graduate School of Science, Chiba University), JANN-YENQ Liu(Institute of Space Science, National Central University, Taiwan), Dimitar Ouzounov(Center of Excellence in Earth Systems Modeling & Observations (CEESMO) , Schmid College of Science & Technology Chapman University, Orange, California, USA), Qinghua Huang(Peking University)

[MIS04-P06] Multi-sensor monitoring network for earthquake precursor study near subduction zone at Boso, Japan

*Katsumi Hattori1, Chie Yoshino1, WEIYUN XIE2, Sanaka Saito2, Haruna Kojima2, Rui Song2, Peng Han3, Toru Mogi4, Tada-nori Goto5, Ichi Takumi6, Hiroshi Yasukawa7, Motoaki Mouri8, Jun Izutsu9, Tadashi Takano10, Chihiro Yamanaka11, Masashi Kamogawa12, Yoshiaki Ando13, JANN-YENQ Liu14, Dimitar Ouzounov15, Valery Tramutoli16 (1.Department of Earth Sciences, Graduate School of Science, Chiba University, 2.Graduate School of Science and Engineering, Chiba University, 3.Southern University of Science and Technology, China, 4.Hokkaido University, 5.Kyoto University, 6.Nagoya Institute of Technology, 7.Aichi Prefectural University, 8.Aichi University, 9.Chubu University, 10.Nihon University, 11.Osaka University, 12.Tokyo Gakugei University, 13.The University of Electro-Communications, 14.National Central University, Taiwan, 15.Chapman University, US, 16.University of Basilicagta, Italy)

New observations from ground and space have provided multiple evidences of pre-earthquake signals and the latest studies show their statistical significance, repeatability, and universality. In this project, to understand the preparation process of large earthquakes and slow-slip events in subduction zone, especially to clarify the nucleation stage of the earthquake cycle, we plan to establish a dense observation network in Boso, Japan, where large subduction earthquakes are expected soon. Since the subsurface fluid flow may play an important role in the preparation process of subduction activities, we intend to employ electromagnetic approaches including oceanic and continental MT survey to monitor the underground resistivity structure which is sensitive to the dynamics of fluid. Other geophysical monitoring such as ULF geomagnetic and geoelectrical observations, radon measurements, and inland GPS movements, TIR, and OLR will be incorporated to help to understand the preparation process and evaluate the applicability of various pre-earthquake signals towards short term earthquake forecasting. We call this idea “sensor WEB”. We will show the state of the art and some results in our presentation.
This study is supported by Grand-in-Aids for Scientific Research of Japan Society for Promotion of Science (26249060).