[S-SS14] Fault Rheology and Earthquake Physics

Tue. May 28, 2019 3:30 PM - 5:00 PM A05 (TOKYO BAY MAKUHARI HALL)

convener:Keishi Okazaki(Japan Agency for Marine-Earth Science and Technology), Hideki Mukoyoshi(Department of Geoscience Interdisciplinary Graduate School of Science and Engineering, Shimane University), Hiroyuki Noda(Kyoto University, Disaster Prevention Research Institute), Keisuke Yoshida(Tohoku University), Chairperson:Keisuke Yoshida(東北大学大学院理学研究科地球物理学専攻), Keishi Okazaki(JAMSTEC)

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.

+Add all to schedule

3:30 PM - 3:45 PM

[SSS14-01] Spatio-temporal Evolution of Micro-Earthquakes illuminated by “0.1 manten” Hyper Dense Seismic Observation: Implication of Fault Growth

*Aitaro Kato¹, Shin'ichi Sakai¹, Satoshi Matsumoto², Yoshihisa Iio³ (1.Earthquake Research Institute, the University of Tokyo, 2.Kyushu University, 3.Kyoto University)

3:45 PM - 4:00 PM

[SSS14-02] Estimation of fault model of the 2017 Pohang, South Korea earthquake using seismic and geodetic analyses

*Sun-Cheon Park¹, Won-Jin Lee², Geunyoung Song¹, Duk Kee Lee¹ (1.Korea Meteorological Administration, 2.National Institute of Environmental Research)

4:00 PM - 4:15 PM

[SSS14-03] Estimation of rupture directivity, fault plane, and stress drop of small earthquakes in inland areas of Japan

*Keisuke Yoshida¹, Tatsuhiko Saito², Kentaro Emoto¹, Yumi Urata² (1.Tohoku University, 2.NIED)

4:15 PM - 4:30 PM

[SSS14-04] Possible aseismic phenomena causing the hypocenter migration in the precursory activity and aftershocks of the 2017 M 5.3 Kagoshima Bay earthquake, Kyusyu, SW Japan

*Yoshiaki Matsumoto¹, Keisuke Yoshida¹, Toru Matsuzawa¹, Akira Hasegawa¹ (1.Research Center for Prediction of Earthquakes and Volcanic Eruptions, Tohoku University)

4:30 PM - 4:45 PM

[SSS14-05] Stress and pore fluid pressure changes in fault zone preceding the earthquake occurrence

*Teruo Yamashita

4:45 PM - 5:00 PM

[SSS14-06] Micromechanical model of fluid-induced seismicity to reproduce observed spatiotemporal changes in source parameters and on-fault fluid diffusion

*Daisuke Sato¹, Keisuke Yoshida² (1.Disaster Prevention Research Institute, Kyoto University, 2.Tohoku University)

Session information