[S-SS15] Fault Rheology and Earthquake Physics

convener:Keisuke Yoshida(Tohoku University), Keishi Okazaki(Japan Agency for Marine-Earth Science and Technology), Shunya Kaneki(Disaster Prevention Research Institute, Kyoto University), Hiroyuki Noda(Kyoto University, Disaster Prevention Research Institute)

The goal of this session is to integrate theoretical, experimental, observational, and numerical perspectives from various fields such as seismology, geodesy, geology, mineralogy, and so on, to define what is known about earthquake source processes and the physical and chemical elementary processes of faulting. This session welcomes studies that address such issues as pre-, co-, and post-seismic processes, the rheology of seismogenic faults and fault rocks, laboratory experiments on elementary processes, numerical models based on frictional laws, and estimates of the stress field in the seismogenic zones. We also welcome studies on fault-zone drilling projects and in situ stress measurements.

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[SSS15-19] Validating the Method Estimating Fault Slip Angles by Using the Wallace-Bott Hypothesis and Regional 3D Stress Field

*Takeo Ishibe¹, Ritsuko S. Matsu'ura¹, Toshiko Terakawa², Akinori Hashima³, Masashi Mochizuki⁴ (1.Association for the Development of Earthquake Prediction, 2.Nagoya University, 3.Earthquake Research Institute, the University of Tokyo, 4.MEXT)

[SSS15-20] Source parameter estimation of hydraulically-induced acoustic emissions in the laboratory

*Makoto Naoi¹, Keiichi Imakita¹, Youqing CHEN¹, Rui Tanaka¹, Kazune Yamamoto³, Hironori Kawakata², Tsuyoshi Ishida¹, Eiichi Fukuyama¹, Yutaro Arima³ (1.Kyoto University, 2.Ritsumeikan University, 3.JOGMEC)

[SSS15-21] CMT solutions of the 2016 central Oita earthquakes using near-field strong motion records

*Hirofumi Kowari¹, Masanao Komatsu¹, Hiroshi Takenaka¹, Taro Okamoto², Takeshi Nakamura³, Masayuki Yoshimi⁴, Takumi Hayashida⁵ (1.Department of Earth Sciences, Graduate School of Natural Science and Technology, Okayama University, 2.Tokyo Institute of Technology, 3.National Research Institute for Earth Science and Disaster Resilience, 4.Geological Survey of Japan, AIST, 5.International Institute of Seismology and Earthquake Engineering, Building Research Institute)

[SSS15-22] Simultaneous estimation of stress drops and rupture directivities of small and moderate-sized earthquakes in the offshore Tohoku region based on S-net data

*Keisuke Yoshida¹, Ryota Takagi¹, Naoki Uchida¹, Rina Ikeda¹ (1.Tohoku University)

[SSS15-23] Slip inversion with radiation-corrected empirical Green’s functions

*Ritsuya Shibata¹, Genki Oikawa¹, Naofumi Aso¹, Junichi Nakajima¹, Satoshi Ide² (1.Department of Earth and Planetary Sciences, Tokyo Institute of Technology, 2.Department of Earth and Planetary Sciences, University of Tokyo)

[SSS15-24] Nucleation and coseismic rupture of the 2019 M 6.4 and M 7.1 Ridgecrest, California earthquakes

*Lingsen Meng¹, Hui Huang¹, Yuqing Xie¹, Han Bao¹ (1.University of California Los Angeles)