MR31C:
Evolving Fault Zone Properties: From Coseismic Weakening and Damage Through Postseismic Fracture Healing I

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Session ID#: 34697

Session Description:
Understanding changes in fault-zone properties throughout the seismic cycle, over shorter characteristic times and at the appropriate length scales, are necessary to characterize earthquake occurrence and co-seismic effects. Inter-seismic periods allow for kinetically sluggish processes to occur that might also have important feedbacks on co-seismic slip behavior. We welcome contributions that explore processes and phenomena that alter the mechanical, chemical and/or hydrologic properties of seismic and aseismic faults. Interesting studies may originate from rock-deformation experiments, geologic and seismological observations, and numerical modeling.
Primary Convener:  Brooks Proctor, US Geological Survey, Earthquake Science Center, Menlo Park, CA, United States
Conveners:  Nicholas M Beeler, USGS Geological Survey, Earthquake Science Center, Menlo Park, CA, United States, Thomas Matthew Mitchell, University College London, Rock and Ice Physics and Seismological Laboratory, London, United Kingdom and David L Goldsby, University of Pennsylvania, Department of Earth and Environmental Sciences, Philadelphia, PA, United States
Chairs:  Brooks Proctor, US Geological Survey, Earthquake Science Center, Menlo Park, CA, United States and Thomas Matthew Mitchell, University College London, Department of Earth Sciences, London, United Kingdom
OSPA Liaison:  David L Goldsby, University of Pennsylvania, Department of Earth and Environmental Sciences, Philadelphia, PA, United States
Index Terms:

5199 General or miscellaneous [PHYSICAL PROPERTIES OF ROCKS]
8012 High strain deformation zones [STRUCTURAL GEOLOGY]
8118 Dynamics and mechanics of faulting [TECTONOPHYSICS]
8163 Rheology and friction of fault zones [TECTONOPHYSICS]

Abstracts Submitted to this Session:

Fluid thermodynamics control thermal weakening during earthquake rupture. (212865)
Mateo Acosta1, Francois Xavier Passelegue2, Alexandre Schubnel3 and Marie Violay1, (1)Swiss Federal Institute of Technology Lausanne, Lausanne, Switzerland, (2)University of Manchester, SEAES, Manchester, United Kingdom, (3)Ecole Normale Supérieure Paris, Department of Geosciences, Paris, France
Pore fluid pressure and the seismic cycle (Invited) (220913)
Melodie E French, Rice University, Earth, Environmental and Planetary Sciences, Houston, TX, United States, Wenlu Zhu, University of Maryland, College Park, MD, United States, Greg Hirth, Brown University, Department of Earth, Environmental and Planetary Sciences, Providence, RI, United States and Benjamin Belzer, Rice University, Houston, TX, United States
Dynamic permeability of simulated fault induced by intermediate velocity friction test (217130)
Wataru Tanikawa, JAMSTEC Japan Agency for Marine-Earth Science and Technology, Kochi Institute for Core Sample Research, Nankoku, Japan
Evolution of Permeability through the Earthquake Cycle (233563)
Kyungjae IM, Pennsylvania State University Main Campus, Division of Geological and Planetary Sciences, University Park, United States and Derek Elsworth, Pennsylvania State University, University Park, United States
The semi-brittle to ductile transition in peridotite on oceanic faults: mechanisms and P-T condition (281783)
Cécile Prigent, Institut de Physique du Globe de Paris, Paris, France, Jessica M Warren, University of Delaware, Earth Sciences, Newark, DE, United States, Arjun H Kohli, SLAC National Accelerator Laboratory, Stanford Synchrotron Radiation Lightsource, Menlo Park, CA, United States and Christian P Teyssier, University of Minnesota, Minneapolis, MN, United States

See more of: Mineral and Rock Physics