T23F:
Subduction Dynamics Across the Scales Posters

Submit an Abstract to this Session



Session ID#: 25133

Session Description:
Subduction zones display a wide variety of tectonic and earthquake behaviors across a range of timescales. Seismic tomography, laboratory and numerical models have helped to understand plate boundary evolution at the geological time-scale. However many aspects of short-term subduction dynamics remain unclear. The series of thrust megathrust earthquakes of the last 15 years, besides highlighting the social relevance of geodynamic studies, has opened a window into the dynamics of subduction zones at the seismic cycle time-scale. The combination of seismic, geodetic and numerical modeling has helped to understand the physical characteristics of the megathrust earthquakes and the role of the fault geometry, temperature, fluid circulation, petrology and seismic/aseismic energy partitioning to the dynamics convergent margins. We welcome contributions from geodynamicists, seismologists, geodesists and geologists aiming at exploring the relationship between subduction zone dynamics and seismic cycle.
Primary Convener:  Gabriele Morra, University of Louisiana at Lafayette, Lafayette, LA, United States
Conveners:  Emma Hill, Asian School of the Environment, Nanyang Technological University, Singapore, Singapore, Thorsten W Becker, University of Texas at Austin, Jackson School of Geosciences, Austin, TX, United States and Ylona van Dinther, Utrecht University, Department of Earth Sciences, Utrecht, Netherlands
Chairs:  Emma Hill, Earth Observatory of Singapore, Nanyang Technological University, Singapore, Singapore, Thorsten W Becker, University of Texas at Austin, Jackson School of Geosciences, Austin, TX, United States and Gabriele Morra, University of Louisiana at Lafayette, Lafayette, LA, United States
OSPA Liaison:  Gabriele Morra, University of Louisiana at Lafayette, Lafayette, LA, United States
Co-Organized with:
Tectonophysics, Study of Earth's Deep Interior, Geodesy, and Seismology

Cross-Listed:
  • DI - Study of the Earth's Deep Interior
  • G - Geodesy
  • S - Seismology
Index Terms:

1242 Seismic cycle related deformations [GEODESY AND GRAVITY]
7215 Earthquake source observations [SEISMOLOGY]
8123 Dynamics: seismotectonics [TECTONOPHYSICS]
8180 Tomography [TECTONOPHYSICS]

Abstracts Submitted to this Session:

An Examination of Upper Plate Aftershocks of the Tohoku-oki Earthquake: Are They Caused by a Long-term Change in the Dip of the Subducting Plate? (275290)
W Roger Buck, Lamont-Doherty Earth Observatory, Palisades, NY, United States and Bar Oryan, Scripps Institution of Oceanography, La Jolla, United States
Using Temperature as a Tracer to Study Fluid Flow Patterns On and Offshore Taiwan (206339)
Wu-Cheng Chi, Academia Sinica, Institute of Earth Sciences, Taipei, Taiwan
Inferring rupture characteristics using new databases for 3D slab geometry and earthquake rupture models (232634)
Gavin P Hayes1, Steven Michael Plescia2,3 and Ginevra Moore2, (1)USGS National Earthquake Information Center, Golden, CO, United States, (2)USGS National Earthquake Information Center Golden, Golden, CO, United States, (3)University of Colorado at Boulder, Boulder, CO, United States
Seafloor Displacement after the 2011 Tohoku-oki Earthquake in the Northern Japan Trench Examined by Repeated Bathymetric Surveys (237947)
Toshiya Fujiwara1, Christian dos Santos Ferreira2, Anna Katharina Bachmann2, Michael Strasser3, Gerold Wefer2, Tianhaozhe Sun4, Toshiya Kanamatsu5 and Shuichi Kodaira6, (1)JAMSTEC Japan Agency for Marine-Earth Science and Technology, Research Institute for Marine Geodynamics, Kanagawa, Japan, (2)MARUM, University of Bremen, Bremen, Germany, (3)University of Innsbruck, Institute of Geology, Innsbruck, Austria, (4)School of Earth and Ocean Sciences, University of Victoria, Victoria, BC, Canada, (5)JAMSTEC Japan Agency for Marine-Earth Science and Technology, Institute for Marine Geodynamics, Kanagawa, Japan, (6)Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokohama, Japan
Two-dimensional analysis of post-seismic deformation of the 2011 Tohoku-Oki earthquake with rate-and-state friction and non-linear rock rheology (246974)
Jun Muto1, James Daniel Paul Moore2, Sylvain Barbot3, Takeshi Iinuma4, Yusaku Ohta5, Syunsuke Horiuchi6 and Iwamori Hikaru6, (1)Department of Earth Science, Tohoku University, Sendai, Japan, (2)Earth Observatory of Singapore, Singapore, Singapore, (3)University of Southern California, Department of Earth Sciences, Los Angeles, CA, United States, (4)Japan Agency for Marine-Earth Science and Technology, Research and Development Center for Earthquake and Tsunami, Yokohama, Japan, (5)Tohoku University, Research Center for Prediction of Earthquakes and Volcanic Eruptions, Graduate School of Science, Sendai, Japan, (6)JAMSTEC Japan Agency for Marine-Earth Science and Technology, Yokosuka, Japan
A Proposal of Monitoring and Forecasting Method for Crustal Activity in and around Japan with 3-dimensional Heterogeneous Medium Using a Large-scale High-fidelity Finite Element Simulation (296611)
Takane Hori1, Ryoichiro Agata2, Tsuyoshi Ichimura3, Kohei Fujita3, Takuma Yamaguchi3 and Narumi Takahashi4, (1)Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokohama, Japan, (2)JAMSTEC Japan Agency for Marine-Earth Science and Technology, Kanagawa, Japan, (3)Earthquake Research Institute, The University of Tokyo, Tokyo, Japan, (4)National Research Institute for Earth Science and Disaster Resilience (NIED), Tsukuba, Japan
Estimation of internal friction angle of subduction zone in northeast of Japan by using seismic focal mechanisms (250148)
Ayumu Miyakawa1, Katsushi Sato2 and Makoto Otsubo1,3, (1)Geological Survey of Japan, AIST, Tsukuba, Japan, (2)Kyoto University, Kyoto, Japan, (3)USGS, Menlo Park, CA, United States
Imaging the Eastern Trans-Mexican Volcanic Belt and the Veracruz Basin with Ambient Seismic noise and Earthquake Body Waves (242145)
Jorge C. Castellanos, Lumetec Inc, Pasadena, United States and Robert W Clayton, California Institute of Technology, Pasadena, CA, United States
Dynamic Rupture Simulations to Investigate the Behavior of the Deep Part of the 2011 Tohoku Earthquake Fault (251468)
Kenichi Tsuda1, Samaneh Arzpeima1, Sachio Ogawa1, Takahide Watanabe1, Jun'ichi Miyakoshi1, Satoshi Iwase2, Naoya Ishikawa2, Hayato Mori2 and Jean-Paul Ampuero3, (1)Ohsaki Research Institute, Chiyoda-ku, Tokyo, Japan, (2)Chubu Electrical Power Company, Nagoya, Japan, (3)Géoazur - Université Nice Sophia Antipolis, Valbonne, France
Postseismic Afterslip, Viscoelastic Mantle Flow, and the Earthquake Cycle at The Nankai Trough Subduction Zone  (262403)
Douglas W Tebo, Indiana Department of Environmental Management, Office of Land Quality, Indianapolis, IN, United States and Kaj M Johnson, Indiana University, Department of Earth and Atmospheric Sciences, Bloomington, United States
High-resolution numerical modeling of tectonic underplating in circum-Pacific subduction zones: toward a better understanding of deformation in the episodic tremor and slip region? (262168)
Armel Menant1, Samuel Angiboust1, Taras Gerya2, Robin Lacassin1, Martine Simoes1 and Raphael Grandin3, (1)Institut de Physique du Globe de Paris, Paris, France, (2)ETH Zurich, Department of Earth and Planetary Sciences, Zurich, Switzerland, (3)Université de Paris Cité, Institut de Physique du Globe de Paris, CNRS, Paris, France
Implications of loading/unloading a subduction zone with a heterogeneously coupled interface (251141)
Matthew W Herman, Utrecht University, Utrecht, Netherlands, Kevin P Furlong, Penn State Univ, University Park, United States and Rob Govers, Utrecht University, Department of Earth Sciences, Utrecht, Netherlands
Constraining the strength of megathrusts from fault geometries and application to collision zones (269445)
Armin Dielforder, Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences, Potsdam, Germany
Stress Orientations and Strain Rates in the Upper Plate of a ‘Locked’ subduction zone, at southernmost North Island, New Zealand (254872)
Dominic Alessandro David Evanzia1, Simon Henry Lamb2 and Martha K Savage1, (1)Victoria University of Wellington, Wellington, New Zealand, (2)Victoria University of Wellington, School of Geography, Environment and Earth Sciences, Wellington, New Zealand
Linkages Between the Megathrust and Upper-plate Deformation: Lessons From the Deformational Dichotomy of the 2016 Kaikoura New Zealand Earthquake (230650)
Kevin P Furlong, Pennsylvania State University Main Campus, University Park, PA, United States and Matthew W Herman, Penn State Univ, University Park, PA, United States
Rheological Properties and Heterogeneities Along the Down-Dip Extent of a Subduction Megathrust: Insights from the Condrey Mountain Schist, Northern California (253831)
Carolyn M Tewksbury-Christle1, Whitney M Behr2 and Mark A. Helper1, (1)University of Texas at Austin, Department of Geological Sciences, Austin, United States, (2)Structural Geology & Tectonics Group, Dept. of Earth & Planetary Sciences, ETH Zürich, Zürich, Switzerland
Seismic Evidence for a Fossil Slab Origin of the Isabella Anomaly in Central California (254918)
Chengxin Jiang, Harvard University, Department of Earth & Planetary Sciences, Cambridge, United States, Brandon Schmandt, University of New Mexico, Department of Earth and Planetary Sciences, Albuquerque, United States, Steven M Hansen, University of New Mexico Main Campus, Albuquerque, NM, United States, Sara L Dougherty, U.S. Geological Survey, Earthquake Science Center, Pasadena, CA, United States and Robert W Clayton, California Institute of Technology, Pasadena, CA, United States
PBO Borehole Strainmeters: 2017 Episodic Tremor and Slip Event for Southern Vancouver Island, BC, Canada through Olympia, WA, USA (286862)
Elizabeth J Van Boskirk1, Kathleen Marian Hodgkinson2, Michael H Gottlieb3, Wade Johnson4, David B Henderson3, David Mencin5 and Glen S Mattioli6, (1)UNAVCO, Inc. Portland, Portland, OR, United States, (2)UNAVCO, Socorro, NM, United States, (3)UNAVCO, Inc., Boulder, CO, United States, (4)UNAVCO, Inc. Boulder, Boulder, United States, (5)EarthScope Consortium, Data Services, Remote, United States, (6)UNAVCO, Boulder, CO, United States
Spacing of Imbricated Thrust Faults and the Strength of Thrust-Belts and Accretionary Wedges (263717)
Garrett Ito, University of Hawaii, Department of Earth Sciences, Honolulu, United States, Paul Vyvyan Regensburger, North Carolina State University, Raleigh, United States and Gregory F Moore, University of Hawaii at Manoa, Earth Sciences, Honolulu, United States
Frictional properties of relic fore arc metasediments from Kodiak Island, AK: Implications for slip in the upper accretionary prism (289831)
Peter Miller, Pennsylvania State University Main Campus, University Park, PA, United States, Hannah S Rabinowitz, Columbia University in the City of New York, New York, NY, United States, Demian M Saffer, Penn State University, Department of Geosciences, University Park, PA, United States and Heather M Savage, Columbia University of New York, Palisades, NY, United States
Bulldozing of Basal Continental Mantle Lithosphere During Flat-Slab Subduction (245883)
Gary J Axen, New Mexico Institute of Mining and Technology, Earth and Environmental Science, Socorro, NM, United States, Jolante van Wijk, New Mexico Institute of Mining and Technology, Earth & Environmental Science, Socorro, United States and Claire A Currie, University of Alberta, Department of Physics, Edmonton, AB, Canada
Modelling Earthquakes Using a Poro-Elastic Two-Phase Flow Formulation (250209)
Claudio Petrini1, Taras Gerya2, Ylona van Dinther3, James A Connolly1 and Claudio Madonna4, (1)ETH Swiss Federal Institute of Technology Zurich, Zurich, Switzerland, (2)ETH Zurich, Department of Earth and Planetary Sciences, Zurich, Switzerland, (3)Utrecht University, Department of Earth Sciences, Utrecht, Netherlands, (4)ETH Zurich, Department of Earth & Planetary Sciences, Zurich, Switzerland
Deep Sediment Subduction Controls Subduction Plate Speeds (216827)
Whitney M Behr, Structural Geology & Tectonics Group, Dept. of Earth & Planetary Sciences, ETH Zürich, Zürich, Switzerland and Thorsten W Becker, University of Texas at Austin, Jackson School of Geosciences, Austin, TX, United States
Using geodynamic models to investigate how sediments influence subduction dynamics. (298730)
Amrit Malach, University of Missouri Columbia, Columbia, MO, United States, Dave R Stegman, University of California San Diego, Scripps Institution of Oceanography, La Jolla, United States and Adina E. Pusok, Johannes Gutenberg University of Mainz, Mainz, Germany
Slab2 – Updated Subduction Zone Geometries and Modeling Tools (280001)
Ginevra Moore, USGS National Earthquake Information Center Golden, Golden, CO, United States, Gavin P Hayes, USGS National Earthquake Information Center, Golden, CO, United States, Daniel Evan Portner, University of Arizona, Tucson, AZ, United States, Maria Furtney, Cooperative Institute for Research in Environmental Sciences, Boulder, CO, United States, Hanna Elizabeth Flamme, Colorado School of Mines, Geophysics, Golden, CO, United States and Mike G Hearne, U.S. Geological Survey, Geologic Hazards Science Center, Golden, CO, United States

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