S54C:
Slow Slip, Tectonic Tremor, and the Brittle-to-Ductile Transition Zone: What Mechanisms Control the Diversity of Slow and Fast Earthquakes? IV

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Session ID#: 32777

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:  Brent Delbridge, Berkeley Seismological Lab, Berkeley, CA, United States, William Benjamin Frank, Massachusetts Institute of Technology, Department of Earth, Atmospheric, and Planetary Sciences, Cambridge, MA, United States and Satoshi Ide, The University of Tokyo, Department of Earth and Planetary Science, Tokyo, Japan
OSPA Liaison:  Abhijit Ghosh, University of California Riverside, Riverside, CA, United States

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:

Shallow very-low-frequency earthquakes accompanied with slow slip event along the plate boundary of the Nankai trough (227907)
Masaru Nakano, JAMSTEC Japan Agency for Marine-Earth Science and Technology, Kanagawa, Japan, Takane Hori, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokohama, Japan, Eiichiro Araki, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Research Institute for Marine Geodynamics, Yokosuka, Japan, Shuichi Kodaira, JAMSTEC Japan Agency for Marine-Earth Science and Technology, Yokosuka, Japan and Satoshi Ide, The University of Tokyo, Department of Earth and Planetary Science, Tokyo, Japan
Abundant spontaneous VLFE activities in Cascadia during ETS and inter-ETS time periods (Invited) (216207)
Abhijit Ghosh, University of California Riverside, Department of Earth and Planetary Sciences, Riverside, CA, United States, Allie A Hutchison, ETH Zurich, Earth Sciences, Zurich, Switzerland and Jessica Hawthorne, University of Leeds, Leeds, United Kingdom
Continuous Shear Wave Signals from around a Subducted Seamount Following 2014 Mw 6.8 Slow-slip Event in the Hikurangi Subduction Margin Offshore New Zealand (254624)
Yuriko Iwasaki1, Kimihiro Mochizuki1, Motoko Ishise1, Erin K Todd2, Susan Y Schwartz3, Stuart A Henrys4, Martha K Savage5, Anne Sheehan6, Yoshihiro Ito7, Laura M Wallace8, Spahr C Webb9, Hubert Jerzy Zal10, Tomoaki Yamada1 and Masanao Shinohara11, (1)Earthquake Research Institute, The University of Tokyo, Tokyo, Japan, (2)University of Otago, Dunedin, New Zealand, (3)University of California Santa Cruz, Earth and Planetary Sciences, Santa Cruz, CA, United States, (4)GNS Science, Lower Hutt, New Zealand, (5)Victoria University of Wellington, Wellington, New Zealand, (6)University of Colorado Boulder, Cooperative Institute for Research in Environmental Sciences, Boulder, United States, (7)Disaster Prevention Research Institute, Kyoto University, Kyoto, Japan, (8)University of Texas, Institute for Geophysics, Austin, United States, (9)Lamont-Doherty Earth Observatory, Palisades, NY, United States, (10)Victoria University of Wellington, School of Geography, Environment and Earth Sciences, Wellington, New Zealand, (11)National Research Institute for Earth Science and Disaster Resilience/Earthquake Research Institute, The University of Tokyo, Tokyo, Japan
Migrating slow slip detected by slow and repeating earthquakes along the Nankai trough, Japan (271995)
Naoki Uchida1, Kazushige Obara2, Ryota Takagi1 and Youichi Asano3, (1)Tohoku University, Graduate School of Science, Sendai, Japan, (2)ERI, The University of Tokyo, Bunkyo-Ku, Tokyo, Japan, (3)National Research Institute for Earth Science and Disaster Resilience, Tsukuba, Japan
Temporal Variation of Tectonic Tremor Activity Associated with Nearby Earthquakes (275243)
Kevin Chao, Northwestern University, Northwestern Institute on Complex Systems, Evanston, IL, United States, Suzan van der Lee, Northwestern University, Evanston, IL, United States, Ya-Ju Hsu, Institute of Earth Sciences, Academia Sinica, Taipei, Taiwan and Hsin-Chieh Pu, Central Weather Bureau, Taiwan, Taipei, Taiwan
A Model for Low-Frequency Earthquake Slip in Cascadia (289000)
Shelley Chestler and Kenneth Creager, Univ Washington, Seattle, WA, United States
Is Slow Slip a Cause or a Result of Tremor? (283772)
Yingdi Luo, California Institute of Technology, Pasadena, CA, United States and Jean-Paul Ampuero, Géoazur - Université Nice Sophia Antipolis, Valbonne, France

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