S53F:
Slow Slip, Tectonic Tremor, and the Brittle-to-Ductile Transition Zone: What Mechanisms Control the Diversity of Slow and Fast Earthquakes? III

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Session ID#: 32771

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:  Takahiro Hatano, University of Tokyo, Bunkyo-ku, Japan, Abhijit Ghosh, University of California Riverside, Department of Earth and Planetary Sciences, Riverside, CA, United States and Kevin Chao, Earthquake Research Institute, University of Tokyo, Tokyo, Japan
OSPA Liaison:  Kevin Chao, Northwestern University, Northwestern Institute on Complex Systems, Evanston, IL, 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:

Resolving the detailed spatiotemporal slip evolution of deep tremor in western Japan (268936)
Kazuaki Ohta, National Research Institute for Earth Science and Disaster Resilience, Tsukuba, Japan and Satoshi Ide, The University of Tokyo, Department of Earth and Planetary Science, Tokyo, Japan
Insights in Low Frequency Earthquake Source Processes from Observations of Their Size-Duration Scaling (252901)
Gaspard Farge1, Nikolai Shapiro2, William Benjamin Frank3, Nicolas Mercury1, Jean-Pierre Vilotte1 and KISS seismic experiment working Group4, (1)Institut de Physique du Globe de Paris, Paris, France, (2)Institut de Physique du Globe, Paris, France, (3)Institut de Physique du Globe de Paris, Paris Sorbonne Cité, CNRS, Paris, France, (4)Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences, Potsdam, Germany
Size and interevent-time distributions of very low frequency earthquakes during swarms in the Nankai subduction zone (228117)
Akiko Takeo, Earthquake Research Institute, The University of Tokyo, Tokyo, Japan and Kazushige Obara, The University of Tokyo, Earthquake Research Institute, Tokyo, Japan
Imbricated slip rate processes during slow slip transients imaged by low-frequency earthquakes (211471)
Olivier Lengliné, University of Strasbourg/CNRS, Strasbourg Cedex, France, William Benjamin Frank, Massachusetts Institute of Technology, Department of Earth, Atmospheric, and Planetary Sciences, Cambridge, MA, United States, David Marsan, CNRS, ISTerre, Université Savoie Mont-Blanc, Le Bourget-du-Lac, France and Jean-Paul Ampuero, Géoazur - Université Nice Sophia Antipolis, Valbonne, France
Characterizing Slow Slip Applying Machine Learning (222237)
Claudia Hulbert, Geolabe, Los Alamos, United States, Bertrand Rouet-Leduc, Los Alamos National Laboratory, Earth and Environmental Sciences, Los Alamos, NM, United States, David Chas Bolton, Pennsylvania State University, University Park, PA, United States, Christopher X. Ren, University of Cambridge, Cambridge, United Kingdom, Chris Marone, Penn State University, Department of Geosciences, University Park, PA, United States and Paul A Johnson, Los Alamos National Laboratory, Los Alamos, NM, United States
Spatial Comparisons of Tremor and Slow Slip as a Constraint on Fault Strength in the Northern Cascadia Subduction Zone (257105)
Kelley Hall, University of Washington Seattle Campus, Seattle, WA, United States, David A Schmidt, University of Washington Seattle, Department of Earth and Space Sciences, Seattle, United States and Heidi Houston, University of Washington, Department of Earth and Space Sciences, Seattle, WA, United States

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