[S-SS08] Fault Rheology and Earthquake Physics

Fri. Jun 4, 2021 9:00 AM - 10:30 AM Ch.20 (Zoom Room 20)

convener:Shunya Kaneki(Disaster Prevention Research Institute, Kyoto University), Makiko Ohtani(Earthquake Research Institute, the University of Tokyo), Keishi Okazaki(Japan Agency for Marine-Earth Science and Technology), Keisuke Yoshida(Tohoku University), Chairperson:Keishi Okazaki(Japan Agency for Marine-Earth Science and Technology), Shunya Kaneki(Disaster Prevention Research Institute, Kyoto University)

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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9:00 AM - 9:15 AM

[SSS08-07] New Split-Hopkinson pressure bar installed at Tohoku University to investigate pulverization during fault rupture.

*Eranga Gayanath Jayawickrama¹, Takuma Sekiguchi¹, Jun Muto¹, Hiroyuki Nagahama¹, Hyung-Seop Shin² (1.Tohoku University Department of Earth Science, 2.Andong National University Department of Mechanical Design Engineering)

9:15 AM - 9:30 AM

[SSS08-08] The role of fault zone heterogeneity in producing weak faults and promoting unstable slip

★Invited Papers

*John D Bedford^1,2, Daniel R Faulkner², Nadia Lapusta³ (1.JAMSTEC, 2.Univ. of Liverpool, 3.Caltech)

9:30 AM - 9:45 AM

[SSS08-09] Mechanical amorphization of synthetic fault gouges during rotary-shear friction experiments

*Shunya Kaneki¹, Kiyokazu Oohashi², Tetsuro Hirono³, Hiroyuki Noda¹ (1.Disaster Prevention Research Institute, Kyoto University, 2.Graduate School of Sciences and Technology for Innovation, Yamaguchi University, 3.Graduate School of Science, Osaka University)

9:45 AM - 10:00 AM

[SSS08-10] Friction experiments on volcanic glass-clay mixtures toward understanding the slip behavior of sediments near trench-arc system

*Hanaya Okuda^1,2, Takehiro Hirose³, Asuka Yamaguchi^1,2 (1.Department of Ocean Floor Geoscience, Atmosphere and Ocean Research Institute, University of Tokyo, 2.Department of Earth and Planetary Science, Graduate School of Science, University of Tokyo, 3.Kochi Institute for Core Sample Research, Japan Agency for Marine-Earth Science and Technology)

10:00 AM - 10:15 AM

[SSS08-11] Frictional properties of greenstone: Effects of the seamount subduction on earthquake generation

*Michiyo Sawai¹, Yuuto Yamauchi¹, Yasutaka Hayasaka², Kyuichi Kanagawa¹ (1.Chiba University, 2.Hiroshima University)

10:15 AM - 10:30 AM

[SSS08-12] Rotary shear experiment for understanding frictional behavior of sandstone

*Hiromichi Yano¹, Takeshi Miyamoto¹, Tetsuro Hirono¹ (1.Department of earth and space science, Graduate School of Science, Osaka University)

Session information