S23F:
Physical Origin of Aftershocks, Foreshocks, and Multiplets in Seismology, Lab Experiments, and Across Disciplines II

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Session ID#: 32791

Session Description:
The properties of individual earthquakes can be modeled, at least qualitatively, from physical principles. However, there is no unique theory for the spatio-temporal correlations observed between individual earthquakes, such as the phenomena of foreshocks and aftershocks. While the statistics are reproduced in empirical stochastic models, a unified physical understanding is missing. Different explanations have been proposed for lab and field observations, including: self-organized criticality, temporal variations of external conditions, thermal activation of stress-corrosion reactions, material and stress heterogeneity, local static and more remote dynamic triggering, and static stress relaxation such as viscoelasticity. Many models incorporate rate-and-state dependent friction to relate underlying inferred changes in stress to the observed event rates. This session aims to showcase and discuss the most recent theoretical and experimental results – based upon conceptual and numerical models, field data and lab experiments on rock fracture and friction – focusing on the physical origin of inter-event correlations.
Primary Convener:  Jordi Baro Urbea, University of Calgary, Calgary, AB, Canada
Conveners:  Jörn Davidsen, University of Calgary, Calgary, AB, Canada, Sebastian Hainzl, Deutsches GeoForschungsZentrum GFZ, Potsdam, Germany and Ian Graham Main, University of Edinburgh, Edinburgh, EH9, United Kingdom
Chairs:  Jörn Davidsen1, Jordi Baro Urbea1 and Sebastian Hainzl2, (1)University of Calgary, Calgary, AB, Canada(2)GFZ Helmholtz Centre for Geosciences, Potsdam, Germany
OSPA Liaison:  Jordi Baro Urbea, University of Calgary, Calgary, AB, Canada

Cross-Listed:
  • MR - Mineral and Rock Physics
  • NG - Nonlinear Geophysics
Index Terms:

3235 Persistence, memory, correlations, clustering [MATHEMATICAL GEOPHYSICS]
4475 Scaling: spatial and temporal [NONLINEAR GEOPHYSICS]
7223 Earthquake interaction, forecasting, and prediction [SEISMOLOGY]
8163 Rheology and friction of fault zones [TECTONOPHYSICS]

Abstracts Submitted to this Session:

Dynamic triggering of remote aftershocks of the M=6.6 July 20, 2017 Bodrum-Kos, Turkey, earthquake? (251818)
Fred F Pollitz, U.S. Geological Survey, Earthquake Science Center, Seattle, United States, Ross S Stein, Temblor, Inc., Tiburon, United States and Volkan Sevilgen, Temblor, Inc., Redwood City, CA, United States
Depth dependent stress revealed by aftershocks (223844)
Clement Narteau, Université Paris Cité, Institut de Physique du Globe de Paris, CNRS, Paris, France and Peter Shebalin, International Institute of Earthquake Prediction Theory and Mathematical Geophysics, Moscow, Russia
Microseismic Analysis of Fracture of an Intact Rock Asperity Traversing a Sawcut Fault (232763)
Gregory Mclaskey, Cornell University, Civil and Environmental Engineering, Ithaca, NY, United States and David A Lockner, U.S. Geological Survey, Earthquake Science Center, Menlo Park, CA, United States
Aftershock Sequences and Seismic-Like Organization of Acoustic Events Produced by a Single Propagating Crack  (252781)
Daniel Bonamy1, Dubois Alizee1 and Jonathan Bares, Davy Dalmas, Lamine Hattali , (1)CEA Commissariat à l'Energie Atomique Saclay, Gif-Sur-Yvette Cedex, France
Nonlinear Viscoelastic Rheology and the Occurrence of Aftershocks (244841)
Robert Shcherbakov, University of Western Ontario, Department of Earth Sciences, London, ON, Canada and Xiaoming Zhang, University of Western Ontario, London, ON, Canada
Constitutive law for seismicity rate based on rate and state friction: Dieterich 1994 revisited. (231798)
Elias Rafn Heimisson, Stanford University, Stanford, CA, United States and Paul Segall, Stanford University, Geophysics, Stanford, CA, United States
Modeling Aftershocks and Foreshocks by Time-Dependent Friction Laws (223287)
Eugenio Lippiello, University of Campania "L. Vanvitelli", Mathematics and Physics, Caserta, Italy and François Landes, University of Chicago, James Franck Institute, Chicago, IL, United States

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