[S-SS07] Fault Rheology and Earthquake Physics

Tue. May 24, 2022 1:45 PM - 3:15 PM 105 (International Conference Hall, Makuhari Messe)

convener:Makiko Ohtani(Earthquake Research Institute, the University of Tokyo), convener:Keishi Okazaki(Japan Agency for Marine-Earth Science and Technology), Ryo Okuwaki(Mountain Science Center, Faculty of Life and Environmental Sciences, University of Tsukuba), convener:Shunya Kaneki(Disaster Prevention Research Institute, Kyoto University), Chairperson:Makiko Ohtani(Earthquake Research Institute, the University of Tokyo), Ryo Okuwaki(Mountain Science Center, Faculty of Life and Environmental Sciences, University of Tsukuba)

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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1:45 PM - 2:00 PM

[SSS07-25] Earthquake source parameters and their implications for fluid movement in the northern Hikurangi subduction zone, New Zealand

*Kazuya Tateiwa¹, Calum Chamberlain², Martha K Savage², Tomomi Okada¹ (1.Research Center for Prediction of Earthquakes and Volcanic Eruptions, Graduate School of Science, Tohoku University, 2.Victoria University of Wellington)

2:00 PM - 2:15 PM

[SSS07-26] Estimating Absolute Effective Normal Stress During Slow Slip Events From Slip Velocities and Shear Stress Variations

*Toshinori Sato¹, Takuma Kobayashi^1,2 (1.Graduate School of Science, Chiba University, 2.Asia Air Survey CO., LTD)

2:15 PM - 2:30 PM

[SSS07-27] Fault friction properties inferred from the early afterslip of the 2011 Tohoku-Oki EQ estimated by the PTS analysis

*Yusuke Tanaka¹, Yusaku Ohta¹, SHINICHI MIYAZAKI² (1.Tohoku University, 2.Kyoto University)

2:30 PM - 2:45 PM

[SSS07-28] Prevalent aseismic slip: Implications from repeating earthquakes

*Junichi Nakajima¹, Akira Hasegawa² (1.Department of Earth and Planetary Sciences, Tokyo Institute of Technology, 2.Graduate School of Science, Tohoku University)

2:45 PM - 3:00 PM

[SSS07-29] The 2021 Mw7.0 and Mw6.7 Miyagi-Oki earthquakes, northeastern Japan, nucleated at a seismic/aseismic transition zone in the postseismic period of the 2011 M9 Tohoku earthquake

*Keisuke Yoshida¹, Toru Matsuzawa¹, Naoki Uchida¹ (1.Tohoku University)

3:00 PM - 3:15 PM

[SSS07-30] Source Duration of Intraslab Earthquakes

*Goki Irie¹, Junichi Nakajima¹ (1.Tokyo Institute of Technology)

Session information