[S-SS10] Fault Rheology and Earthquake Physics

Fri. May 30, 2025 3:30 PM - 5:00 PM Exhibition Hall Special Setting (3) (Exhibition Hall 7&8, Makuhari Messe)

convener:Ritsuya Shibata(National Research Institute for Earth Science and Disaster Resilience), Michiyo Sawai(Chiba University), Hanaya Okuda(Kochi Institute for Core Sample Research, Japan Agency for Marine-Earth Science and Technology), Kenichi Tsuda(Institute of Technology, Shimizu Corporation), Chairperson:Michiyo Sawai(Chiba University), Hanaya Okuda(Kochi Institute for Core Sample Research, Japan Agency for Marine-Earth Science and Technology)

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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3:30 PM - 3:45 PM

[SSS10-23] Magnitude distribution during phase transformational faulting: Implication for deep-focus earthquakes

★Invited Papers

*Sando Sawa¹, Julien Gasc², Nobuyoshi Miyajima³, Alexandre Schubnel², Marie Baisset^2,4, Jun Muto¹ (1.Deparment of Earth Science, Graduate School of Science, Tohoku Univeristy, 2.Laboratoire de Geologie, Ecole Normale Superieure Paris, 3.Bayerisches Geoinstitut, University of Bayreuth, 4.Géosciences Rennes, Université de Rennes)

3:45 PM - 4:00 PM

[SSS10-24] Evaluation of fault behavior with a complex structure using dual-slip-plane friction experiment

*Wataru Tanikawa^1,3, Osamu Kuwano¹, Yohei Hamada¹, Takehiro Hirose¹, Takahiro Suzuki² (1.Japan Agency for Marine-Earth Science and Technology, X-star, Kochi Institute for Core Sample Research, 2.MARINE WORKS JAPAN LTD., 3.Kochi University)

4:00 PM - 4:15 PM

[SSS10-25] Slow to fast earthquake transition in slip behavior statistics: Granular shear experiments under various friction and rigidity conditions

*Yuto Sasaki¹, Fumiaki Nakai¹, Hiroaki Katsuragi¹ (1.Department of Earth and Space Science, University of Osaka)

4:15 PM - 4:30 PM

[SSS10-26] Validating strain measurement using Fiber Bragg Grating sensors embedded in a shallow thin slit

*Kurama Okubo¹, Futoshi Yamashita¹, Eiichi Fukuyama^2,1, Yasuki Oikawa³, Masahito Wakahara⁴ (1.National Research Institute for Earth Science and Disaster Resilience, 2.Department of Civil and Earth Resources Engineering, Kyoto University, 3.National Institute of Advanced Industrial Science and Technology, 4.CMIWS Co., Ltd.)

4:30 PM - 4:45 PM

[SSS10-27] Analysis of acoustic emissions and stress evolution in large-scale laboratory experiments to reveal the foreshock occurrence mechanism

*Ryo Ishiyama¹, Bogdan Enescu¹, Eiichi Fukuyama^2,3, Futoshi Yamashita³, Kurama Okubo³ (1.Department of Geophysics, Faculty of Science, Kyoto University, 2.Department of Civil and Earth Resources Engineering, Faculty of Engineering, Kyoto University, 3.National Research Institute for Earth Science and Disaster Resilience)

4:45 PM - 5:00 PM

[SSS10-28] Failure Transition from Fracture to Plasticity in Nanoscale α-Quartz Asperity Collisions During Frictional Sliding

*SHENG LI¹, Eiichi Fukuyama¹ (1.Kyoto University)

Session information