S52B:
Slow Slip, Tectonic Tremor, and the Brittle-to-Ductile Transition Zone: What Mechanisms Control the Diversity of Slow and Fast Earthquakes? II

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Session ID#: 32765

Session Description:
The transition from brittle stick-slip faulting to stable sliding is gradual and the slow transients that occur within this region play a key role alongside earthquakes in accommodating tectonic motion along plate boundaries. The temporal variation of slow-slip phenomena, in some cases, may be related to the megathrust earthquake cycle. Fundamental questions about the physics of faulting within this transitional region remain: can this region also host unstable rupture during a major earthquake? What physical mechanisms and/or rheological conditions allow for the wide variety of observed behavior of faulting and transient slip? We seek abstracts that approach this topic from a variety of perspectives, whether they be model- or data-driven, geological or statistical, seismological or geodetical, or large- or laboratory-scale. We are especially interested in abstracts concerning the rheological properties of the brittle-to-ductile transition zone that will help improve our current understanding of slow earthquake dynamics.
Primary Convener:  William Benjamin Frank, Massachusetts Institute of Technology, Department of Earth, Atmospheric, and Planetary Sciences, Cambridge, MA, United States
Conveners:  Kohtaro Ujiie, University of Tsukuba, Tsukuba, Japan, Takahiro Hatano, University of Tokyo, Bunkyo-ku, Japan and Brent Delbridge, Berkeley Seismological Lab, Berkeley, CA, United States
Chairs:  Kohtaro Ujiie, University of Tsukuba, Tsukuba, Japan and Hitoshi Hirose, Kobe University, Research Center for Urban Safety and Security, Kobe, Japan
OSPA Liaison:  Satoshi Ide, The University of Tokyo, Department of Earth and Planetary Science, Tokyo, Japan

Cross-Listed:
  • T - Tectonophysics
Index Terms:

7209 Earthquake dynamics [SEISMOLOGY]
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:

Upper Plate hysteresis controlling seismogenic rupture area, slow slip area in Subduction Zone; example from the Nankai Trough (237746)
Gaku Kimura, Department of Marine Resources and Environment, Tokyo University of Marine Science and Technology, Tokyo, Japan and Asuka Yamaguchi, Atmosphere and Ocean Research Institute, The University of Tokyo, Kashiwa, Japan
Frictional behavior of carbonate-rich incoming sediment in the Hikurangi subduction zone (255665)
Hannah S Rabinowitz1, Heather M Savage1, Brett M Carpenter2, Matt Ikari3 and Cristiano Collettini4, (1)Columbia University of New York, Palisades, NY, United States, (2)University of Oklahoma, School of Geosciences, Norman, United States, (3)MARUM - University of Bremen, Bremen, Germany, (4)Sapienza University of Rome, Rome, Italy
Geological perspectives of shallow slow earthquakes deduced from deformation in subduction mélanges (264477)
Kohtaro Ujiie1, Hanae Saishu2, Takahiro Kinoshita1, Naoki Nishiyama1, Makoto Otsubo3, Kazuaki Ohta4, Yusuke Yamashita5 and Yoshihiro Ito5, (1)University of Tsukuba, Tsukuba, Japan, (2)AIST - National Institute of Advanced Industrial Science and Technology, Tsukuba, Japan, (3)Geological Survey of Japan, AIST, Tsukuba, Japan, (4)National Research Institute for Earth Science and Disaster Resilience, Tsukuba, Japan, (5)Disaster Prevention Research Institute, Kyoto University, Kyoto, Japan
Creep avalanches on San Andreas Fault and their underlying mechanism from 19 years of InSAR and seismicity (290638)
Mostafa Khoshmanesh, Arizona State University, Tempe, AZ, United States and Manoochehr Shirzaei, Virginia Tech, Department of Geosciences, Blacksburg, United States
Characteristics of broadband slow earthquakes explained by a Brownian model (235259)
Satoshi Ide, The University of Tokyo, Department of Earth and Planetary Science, Bunkyo-ku, Japan and Akiko Takeo, Earthquake Research Institute, The University of Tokyo, Tokyo, Japan
What is This Thing Called Tremor? (240298)
Allan M Rubin, Princeton University, Princeton, NJ, United States and Michael G Bostock, The University of British Columbia, Dept of Earth, Ocean and Atmospheric Sciences, Vancouver, BC, Canada

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