S11E:
Physics of Earthquake Rupture Propagation I

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Session ID#: 17967

Session Description:
Physics of earthquake rupture propagation is a classic problem, on which many studies have been conducted. Due to the upgrade of scientific instruments and methods, now we are able to study earthquake rupture in greater detail in laboratory experiments, in addition to the field observations and numerical simulations. Highlights of recent discoveries include the diverse weakening mechanisms during fault slip, the scale dependence of fault friction and fracture energy, the modulation of fault zone property and surface topography on rupture behavior, the generation of supershear ruptures under heterogeneous conditions, and the non-persistent behaviors of the same fault patch during different earthquakes. In this session, we welcome studies, from friction experiments, seismic/geodetic observations, and numerical modeling, to reflect recent progress in studying the source properties, the detailed rupture process, the involved mechanisms, and the energy budget of earthquakes.
Primary Convener:  Shiqing Xu, Southern University of Science and Technology, Department of Earth and Space Sciences, Shenzhen, China
Conveners:  Eiichi Fukuyama, Kyoto University, Department of Civil and Earth Resources Engineering, Graduate School of Engineering, Kyoto, Japan, Amir Sagy, Geological Survey of Israel, Jerusalem, Israel and Mai Linh Doan, ISTerre Institute of Earth Sciences, Université Grenoble Alpes, Grenoble, France
Chairs:  Eiichi Fukuyama, Kyoto University, Department of Civil and Earth Resources Engineering, Graduate School of Engineering, Kyoto, Japan and Shiqing Xu, Southern University of Science and Technology, Department of Earth and Space Sciences, Shenzhen, China
OSPA Liaison:  Eiichi Fukuyama, Kyoto University, Department of Civil and Earth Resources Engineering, Graduate School of Engineering, Kyoto, Japan
Index Terms:

7209 Earthquake dynamics [SEISMOLOGY]
7215 Earthquake source observations [SEISMOLOGY]
8118 Dynamics and mechanics of faulting [TECTONOPHYSICS]
8163 Rheology and friction of fault zones [TECTONOPHYSICS]

Abstracts Submitted to this Session:

Dynamic Imaging of Spontaneously Evolving Friction in Laboratory Earthquakes (Invited) (121274)
Ares Rosakis and Vito Rubino, California Institute of Technology, Graduate Aerospace Laboratories, Pasadena, CA, United States
Bi-material Faults: Dynamic Friction and Rupture Propagation in Laboratory Experiments (158437)
Brett M Carpenter, University of Oklahoma Norman Campus, School of Geosciences, Norman, United States, Ximeng Zu, University of Oklahoma Norman Campus, Norman, OK, United States and Ze'ev Reches, University of Oklahoma Norman Campus, School of Geosciences, Norman, OK, United States
Directly observing frictional asperity evolution explaining the decrease in b values along fault zones experiencing foreshocks (142061)
Paul A Selvadurai, Jessica M Parker and Steven D Glaser, University of California Berkeley, Berkeley, CA, United States
A Possible Mechanism for Labquake Occurrence in Relation to Precursory Slow Slip (153010)
Eiichi Fukuyama1, Futoshi Yamashita1, Shiqing Xu1, Shigeru Takizawa1, Kazuo Mizoguchi1,2 and Hironori Kawakata1,3, (1)National Research Institute for Earth Science and Disaster Resilience, Tsukuba, Japan, (2)Central Research Institute of Electic Power Industry, Tokyo, Japan, (3)Ritsumeikan University, Kusatsu, Japan
From slow to fast rupture during laboratory earthquakes in dolostones (172929)
Francois Xavier Passelegue1, Michele Fondriest2, Aurelien Nicolas3, Jérôme Aubry4, Alexandre Schubnel4 and Giulio Di Toro2, (1)University of Manchester, SEAES, Manchester, United Kingdom, (2)University of Manchester, Manchester, United Kingdom, (3)Ecole Normale Supérieure Paris, Paris, France, (4)Ecole Normale Supérieure Paris, Laboratoire de Géologie, Paris, France
Lowered Fracture Energy During Laboratory-Generated Earthquakes Promotes Rupture Fronts That Radiate High Frequency Seismic Waves (181499)
Gregory Mclaskey, Cornell University, Civil and Environmental Engineering, Ithaca, NY, United States, David S Kammer, Cornell University, Ithaca, NY, United States, Brian D Kilgore, USGS California Water Science Center Menlo Park, Menlo Park, United States and Nicholas M Beeler, USGS Cascades Volcano Observatory, Vancouver, United States
Influence of Fault Surface Heterogeneity on Apparent Frictional Strength, Slip Mode and Rupture Mode: Insights from Meter-Scale Rock Friction Experiments (153711)
Shiqing Xu1, Eiichi Fukuyama1, Futoshi Yamashita1, Kazuo Mizoguchi2, Shigeru Takizawa1 and Hironori Kawakata3, (1)National Research Institute for Earth Science and Disaster Resilience, Tsukuba, Japan, (2)Central Research Institute of Electric Power Industry, Abiko, Japan, (3)Ritsumeikan University, Kusatsu, Japan
Laboratory experiment of seismic cycles using compliant viscoelastic materials (137449)
Tetsuo Yamaguchi, Kyushu University, Fukuoka, Japan

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