MR41B:
Precursory Deformation before Dynamic Failure II Posters

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Session ID#: 13460

Session Description:
The frictional properties of rocks exert a key control on precursory deformations before dynamic ruptures. New multi-scale evidence reveals a number of deformation mechanisms are involved, such as the competition between granular flow, healing, time-dependent deformation, and mineral phase transformations. At the field scale microearthquakes along creeping faults elucidate the evolution of frictional properties during the seismic cycle and sometimes foreshocks are proposed to be associated with slow slip processes. At the outcrop scale, it is now possible to quantitatively characterize fault zones hydro-mechanical properties. At the laboratory scale new experiments are able to investigate the 3-dimensional microstructure evolution of a deforming rock at conditions representative of a seismogenic zone. All these approaches show a competition between healing and fault reloading, and ultimately can unravel the precursors to rupture events. This session aims to integrate field, laboratory, seismological and geodetic data to address the multi-scale deformations precursory to major ruptures.
Primary Convener:  Sergio Vinciguerra, University of Turin, Earth Sciences, Turin, Italy
Conveners:  François Renard, University of Oslo, Oslo, Norway, Wenlu Zhu, University of Maryland, Department of Geological, Environmental and Planetary Sciences, College Park, United States and Roland Burgmann, University of California Berkeley, Department of Earth and Planetary Science, Berkeley, United States
Chairs:  Sergio Vinciguerra, University of Turin, Earth Sciences, Turin, Italy and Wenlu Zhu, University of Maryland, Department of Geological, Environmental and Planetary Sciences, College Park, United States
OSPA Liaison:  François Renard, University of Oslo, Oslo, Norway
Co-Organized with:
Tectonophysics, and Tectonophysics

Cross-Listed:
  • NH - Natural Hazards
  • S - Seismology
  • T - Tectonophysics
  • V - Volcanology, Geochemistry and Petrology

Proposed Co-Organized Session with:
  • T - Tectonophysics
Index Terms:

3902 Creep and deformation [MINERAL PHYSICS]
7230 Seismicity and tectonics [SEISMOLOGY]
8118 Dynamics and mechanics of faulting [TECTONOPHYSICS]
8163 Rheology and friction of fault zones [TECTONOPHYSICS]

Abstracts Submitted to this Session:

Seismogenic Potential of Anhydrite-Carbonate Fault Gouge Sensitive to Pore Fluid Composition. (138202)
Luuk Bernd Hunfeld, Utrecht University, High Pressure & Temperature Laboratory, Utrecht, Netherlands, Andre R Niemeijer, Utrecht University, Department of Earth Sciences - HPT laboratory, Utrecht, Netherlands and Christopher James Spiers, Utrecht University, Department of Earth Sciences, Utrecht, Netherlands
Coda-Wave Interferometry in the Precursory Detection of Inelastic Deformation (155296)
Reuben Zotz-wilson1, Thijs Boerrigter1 and Auke Barnhoorn2, (1)Delft University of Technology, CTIG, Delft, Netherlands, (2)Delft University of Technology, Delft, Netherlands
Precursory Signatures to Frictional Failure of Rock Joints in Geophysical Waveforms (146684)
Reza Hedayat, Colorado School of Mines, Golden, CO, United States
Evidence for initiation of frictional partial slip as the mechanism behind nonlinear stress-strain hysteresis in rock fractures under seismic-frequency torsion (166296)
Seth Saltiel1, Brian P Bonner1, Brent Delbridge2 and Jonathan B Ajo-Franklin3, (1)Lawrence Berkeley National Laboratory, Berkeley, CA, United States, (2)Berkeley Seismological Lab, Berkeley, CA, United States, (3)Rice University, Earth, Environmental, and Planetary Sciences, Houston, United States
Localized Strain Bands Before Stress Drop -- An Experimental Study (200045)
Yuntao Ji, Yanqun Zhuo, Liqiang Liu and Jin Ma, Institute of Geology, China Earthquake Administration, Beijing, China
Foreshock search over a long duration using a method of setting appropriate criteria (172651)
Yutaka Toyomoto1, Hironori Kawakata1, Shiro Hirano1 and Issei Doi2, (1)Ritsumeikan University, Kusatsu, Japan, (2)Kyoto University, Disaster Prevention Research Institute, Kyoto, Japan
Understanding the Earthquake Cycle along the North Anatolian Fault integrating seismological and geodetic observations (189031)
Fatih Bulut1, Haluk Ozener2, Bahadir Aktug3 and Asli Dogru1, (1)Bogazici University, Kandilli Observatory and ERI.-Department of Geodesy, Istanbul, Turkey, (2)2 Bogazici University, Kandilli Observatory and Earthquake Research Institute, Istanbul, Turkey, (3)Ankara University, Department of Geophysical Engineering, Ankara, Turkey
Real-time noble gas release signaling rock deformation (161300)
Stephen J Bauer, Sandia National Laboratories, Albuquerque, NM, United States, William P Gardner, University of Montana, Missoula, MT, United States and Hyunwoo Lee, University of New Mexico Main Campus, Earth and Planetary Sciences, Albuquerque, NM, United States
Destabilization of a Clay-Rich Slope by Rainfall : Monitoring of Precursons on an Hectometric Sliding Surface (162408)
Mai Linh Doan1, Gregory Bievre2, Denis Jongmans2, Agnes Helmstetter2 and Mathilde Radiguet3, (1)ISTerre Institute of Earth Sciences, Université Grenoble Alpes, Grenoble, France, (2)ISTerre Institute of Earth Sciences, Saint Martin d'Hères, France, (3)ISTerre Institute of Earth Sciences, Grenoble, France
Multiscale seismic characterization and monitoring of a potentially unstable rock mass: the Madonna del Sasso (NW Italy) rockfall (149813)
Sergio Vinciguerra1, Chiara Colombero2, Cesare Comina1, Denis Jongmans3 and Laurent Baillet3, (1)University of Turin, Earth Sciences, Turin, Italy, (2)University of Turin, Turin, Italy, (3)ISTerre Institute of Earth Sciences, Saint Martin d'Hères, France

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