T21D:
Subduction across Scales V Posters


Session ID#: 8926

Session Description:
Both risk assessment and lithosphere dynamics call for a better understanding of subduction zones, particularly along and across the  subduction interface.

How can we bridge the gap between observations made at rock and plate scale, or between signals lasting from seconds to million years? Are we able to image and understand physical conditions and processes at work along the subduction interface at relevant scales, such as years and meters?

Time has come to further our understanding of the nature and structure of the subduction interface and elucidate which lithologies are incorporated and how, which rheological behaviours prevail, which fluids are there and where, or what is their exact bearing on earthquake ruptures.

Building on the recent wealth of geophysical and petrological data and models gathered on the plate-slab interface, we welcome stimulating contributions from all disciplines, seeking to foster joint collaboration and bridge the gap between the various communities.

Primary Convener:  Philippe Agard, Sorbonne Université, CNRS-INSU, Institut des Sciences de la Terre Paris, ISTeP, Paris, France
Conveners:  Kelin Wang, Geological Survey of Canada, Pacific Geoscience Centre, Sidney, BC, Canada, Luce Fleitout, Ecole Normale Supérieure Paris, Paris, France and Bradley R Hacker, University of California Santa Barbara, Department of Earth Science, Santa Barbara, CA, United States
Chairs:  Bradley R Hacker, University of California Santa Barbara, Department of Earth Science, Santa Barbara, CA, United States and Kelin Wang, Geological Survey of Canada, Pacific Geoscience Centre, Sidney, BC, Canada
OSPA Liaison:  Bradley R Hacker, University of California Santa Barbara, Department of Earth Science, Santa Barbara, CA, United States

Cross-Listed:
  • G - Geodesy
  • MR - Mineral and Rock Physics
  • S - Seismology
  • V - Volcanology, Geochemistry and Petrology
Index Terms:

1242 Seismic cycle related deformations [GEODESY AND GRAVITY]
3613 Subduction zone processes [MINERALOGY AND PETROLOGY]
7240 Subduction zones [SEISMOLOGY]
8170 Subduction zone processes [TECTONOPHYSICS]

Abstracts Submitted to this Session:

Time-varying Upper-plate Deformation During the Megathrust Subduction Earthquake Cycle (60920)
Kevin P Furlong, Penn State Univ, University Park, United States, Rob Govers, Utrecht University, Dept. Geosciences, Utrecht, Netherlands and Matthew W Herman, Penn State Univ, University Park, PA, United States
Towards continuum models of lateral rupture propagation in a segmented megathrust (74161)
Casper Cornelis Pranger, ETH Zurich, Institute of Geophysics, Zurich, Switzerland, Ylona van Dinther, Utrecht University, Department of Earth Sciences, Utrecht, Netherlands, Laetitia Le Pourhiet, UPMC (Univ. Paris) / LATMOS, Paris, France, Dave May, ETH Swiss Federal Institute of Technology Zurich, Zurich, Switzerland and Taras Gerya, ETH Zurich, Department of Earth and Planetary Sciences, Zurich, Switzerland
Bulk rheology and simulated episodic tremor and slip within a numerically-modeled block-dominated subduction melange (65370)
Susan M Ellis, GNS Science, Lower Hutt, New Zealand, Sam Webber, Victoria University of Wellington, SGEES, Wellington, New Zealand and Ake Fagereng, Cardiff University, Cardiff, CF24, United Kingdom
Dynamic Rupture Simulations to Investigate the Behavior of Shallow Parts of Mega-Thrust Faults (71487)
Kenichi Tsuda1, Sachio Ogawa1, Takahide Watanabe1, Junichi Miyakoshi1, Hiroaki Uratani2, Satoshi Iwase2 and Jean Paul Ampuero3, (1)Ohsaki Research Institute, Chiyoda-ku, Tokyo, Japan, (2)Chubu Electrical Power Company, Nagoya, Japan, (3)California Institute of Technology, Seismological Laboratory, Pasadena, CA, United States
Fragility of Forearc Stresses as a Consequence of Extreme Weakness of Megathrust Faults (66610)
Kelin Wang1, Lonn Nathaniel Brown2, Jiangheng He1 and Tianhaozhe Sun2, (1)Pacific Geoscience Centre, Geological Survey of Canada, Sidney, BC, Canada, (2)University of Victoria, Victoria, BC, Canada
Analysis and Preliminary Results of the Seafloor Earthquake Array–Japan-Canada Cascadia Experiment (SeaJade) (65086)
Jesse A Hutchinson, University of Victoria, Ocean Networks Canada, Victoria, BC, Canada, Honn Kao, Geological Survey Canada, Sidney, BC, Canada, Koichiro Obana, JAMSTEC Japan Agency for Marine-Earth Science and Technology, Kanagawa, Japan, Shuichi Kodaira, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokohama, Japan and George Spence, University of Victoria, Victoria, BC, Canada
An Examination of Seismicity Linking the Solomon Islands and Vanuatu Subduction Zones (61902)
James Scott Neely, Northwestern University, Department of Earth and Planetary Sciences, Evanston, IL, United States and Kevin P Furlong, Pennsylvania State University Main Campus, University Park, PA, United States
Energy-to-Moment ratios for Deep Earthquakes: No evidence for scofflaws (67554)
Nooshin Saloor and Emile A Okal, Northwestern University, Evanston, United States
High-resolution image of the subducting Philippine Sea plate beneath western Shikoku, southwest Japan (64260)
Katsuhiko Shiomi1, Tetsuya Takeda2 and Tomotake Ueno2, (1)National Research Institute for Earth Science and Disaster Resilience, Tsukuba, Japan, (2)National Research Institute for Earth Science and Disaster Prevention, Tsukuba, Japan
Streak Tectonics associated with the Irregular Slab Topography at Subduction Zones (68282)
Takao Eguchi, National Defense Academy of Japan, Yokosuka, Japan
On the Possibility of Slip-to-trench Rupture in Cascadia Megathrust Earthquakes (67687)
Dawei Gao, University of Victoria, School of Earth and Ocean Sciences, Victoria, BC, Canada, Kelin Wang, Geological Survey of Canada, Pacific Geoscience Centre, Sidney, BC, Canada, Michael Riedel, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany, Tianhaozhe Sun, University of Victoria, Victoria, BC, Canada, Tania Lado Insua, Ocean Networks Canada, Victoria, BC, Canada, Chris Goldfinger, Oregon State University, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, OR, United States and George R Priest, Retired volunteer, Oregon Dept. of Geology and Mineral Industries, Newport, OR, United States
Three-Dimensional Vp Imaging Across the Interseismically Locked Southern Hikurangi Margin, Wellington, New Zealand (68495)
Stuart A Henrys1, Aaron Wech2, Donna Eberhart-Phillips3, Hiroshi Sato4, Tim A Stern5, David A Okaya6, Takaya Iwasaki4, Martha K Savage7, Kimihiro Mochizuki8, Eiji Kurashimo9, Rupert Sutherland1 and SAHKE Working Group, (1)GNS Science-Institute of Geological and Nuclear Sciences Ltd, Lower Hutt, New Zealand, (2)USGS, Anchorage, United States, (3)GNS Science, Lower Hutt, New Zealand, (4)University of Tokyo, Bunkyo-ku, Japan, (5)Victoria University of Wellington, School of Earth Sciences, Wellington, New Zealand, (6)University of Southern California, Los Angeles, CA, United States, (7)Victoria University of Wellington, School of Geography, Environment and Earth Sciences, Wellington, New Zealand, (8)University of Tokyo, Earthquake Research Institute, Bunkyo-ku, Japan, (9)The University of Tokyo, Earthquake Research Institute, Tokyo, Japan
Seismic Anisotropy Beneath Northeast China Revealed by Shear-wave Splitting Analyses (69508)
Muchen Sun1, Bin Yang2, Stephen S Gao1 and Kelly Hong Liu1, (1)Missouri University of Science and Technology, Geology and Geophysics Program, Rolla, MO, United States, (2)Missouri University of Science and Technology, Rolla, MO, United States
The Nature of Co-seismic Rupture Zone of the 2010 Mentawai Tsunami Earthquake from Full Waveform Inversion of Long Offset Seismic Reflection Data (65966)
Gabriel Huot and Satish Chandra Singh, Institut de Physique du Globe de Paris, Paris, France
The Diverse Slip Behavior of the Banyak Islands Section of the Sunda Megathrust Offshore Sumatra. (71891)
Paul Monroe Morgan1, Lujia Feng2, Qiang Qiu3, Aron J Meltzner4, Louisa L Tsang5 and Emma Hill2, (1)Earth Observatory of Singapore, Singapore, Singapore, (2)Earth Observatory of Singapore, Nanyang Technological University, Singapore, Singapore, (3)Nanyang Technological University, Singapore, Singapore, (4)Nanyang Technological University, Earth Observatory of Singapore, Singapore, Singapore, (5)Nanyang Technological University, Asian School of the Environment, Singapore, Singapore
Interpretation of Crustal Deformation following the 2011 Tohoku-oki Megathrust Earthquake by the Combined Effect of Afterslip and Viscoelastic Stress Relaxation (61345)
Akemi Noda1, Tsutomu Takahama1, Masaaki Ohba2, Toshiharu Ito2 and Mitsuhiro Matsu'ura3, (1)Kozo Keikaku Engineering Inc., Tokyo, Japan, (2)The Japan Atomic Power Company, Tokyo, Japan, (3)Inst. Statistical Mathematics, Tokyo, Japan
Residual topography and gravity anomalies reveal structural controls on co-seismic slip in the 2011 Mw 9.0 Tohoku-oki earthquake (74705)
Dan Bassett, GNS Science, Lower Hutt, New Zealand, David T Sandwell, University of California San Diego, La Jolla, CA, United States, Yuri A Fialko, Scripps Institution of Oceanography, University of California San Diego, IGPP, La Jolla, United States and Anthony Brian Watts, University of Oxford, Oxford, United Kingdom
Fault model of the intraplate doublet on Dec. 7 2012 derived from near- and far-field tsunami records and its implication for the post-2011 stress state (76317)
Tatsuya Kubota1, Ryota Hino2, Yusaku Ohta2, Syuichi Suzuki2 and Daisuke Inazu3, (1)National Research Institute for Earth Science and Disaster Resilience, Tsukuba, Japan, (2)Tohoku University, Graduate School of Science, Sendai, Japan, (3)University of Tokyo, Bunkyo-ku, Japan
Seismic Velocity and Attenuation Images of the Nankai Subduction Zone: New Insight into Megathrust Earthquakes (77683)
Dapeng Zhao, Tohoku University, Department of Geophysics, Graduate School of Science, Sendai, Japan and Xin Liu, Tohoku University, Sendai, Japan
Interferometric imaging of crustal structure from wide-angle multicomponent OBS-airgun data (77465)
Kazuya Shiraishi1, Gou Fujie1, Takeshi Sato1, Susumu Abe2, Eiichi Asakawa2 and Shuichi Kodaira3, (1)JAMSTEC Japan Agency for Marine-Earth Science and Technology, Kanagawa, Japan, (2)JGI, Inc., Tokyo, Japan, (3)Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokohama, Japan
New Perspective on the Transition from Flat to Steeper Subduction in Oaxaca, Mexico Based on Seismicity, Nonvolcanic Tremor, and Slow Slip (77178)
Shannon Fasola1, Michael Brudzinski2, Noorulann Ghouse3, Katharine Solada3, Stefany M Sit4, Enrique Cabral-Cano5, Alejandra Arciniega-Ceballos6, Nicholas Kelly3, Charles DeMets7 and Kevin Jensen3, (1)Miami University Oxford, Oxford, OH, United States, (2)Miami University, Oxford, United States, (3)Miami University, Oxford, OH, United States, (4)University of Illinois at Chicago, Chicago, IL, United States, (5)UNAM National Autonomous University of Mexico, Departamento de Geomagnetismo y Exploración, Instituto de Geofísica, Mexico City, Mexico, (6)UNAM National Autonomous University of Mexico, Institute of Geophysics, Mexico City, Mexico, (7)University of Wisconsin Madison, Geoscience, Madison, WI, United States
Near-field and far field effects of elastic structure of Japan on the slip distribution of the 2011 Tohoku earthquake (71660)
Akinori Hashima1, Thorsten W Becker2, Andrew Mark Freed3, Hiroshi Sato1, David A Okaya4, Hisashi Suito5, Hiroshi Yarai6, Makoto Matsubara7, Tetsuya Takeda7, Tatsuya Ishiyama8 and Takaya Iwasaki1, (1)University of Tokyo, Bunkyo-ku, Japan, (2)University of Texas at Austin, Jackson School of Geosciences, Austin, TX, United States, (3)Purdue University, West Lafayette, IN, United States, (4)University of Southern California, Los Angeles, CA, United States, (5)GSI of Japan, Tsukuba, Japan, (6)Geospatial Information Authority of Japan, Ibaraki, Japan, (7)National Research Institute for Earth Science and Disaster Prevention, Tsukuba, Japan, (8)Earthquake Research Institute, University of Tokyo, Tokyo, Japan
Earthquake supercycle in subduction zones controlled by the width of the seismogenic zone (79100)
Luis Angel Dalguer, swissnuclear, Olten, Switzerland, Robert Herrendoerfer, ETH Zurich, Zurich, Switzerland, Ylona van Dinther, Utrecht University, Department of Earth Sciences, Utrecht, Netherlands and Taras Gerya, ETH Zurich, Department of Earth and Planetary Sciences, Zurich, Switzerland
Co-seismic and post-seismic viscoelastic Coulomb stress transfer after the 2004 M9.2 Sumatra-Andaman earthquake: Effects on the 2012 M8.6 Sumatran strike-slip earthquake (81040)
Laiyin Guo, Tongji University, Shanghai, China and Jian Lin, Department of Geology and Geophysics, Woods Hole Oceanographic Institution, Woods Hole, MA, United States
Hydrogeological and Seismic Responses to Incoming Materials at the Non-Accreting Margin, Offshore the Osa Peninsula, Costa Rica (73401)
Robert N Harris1, Jun Kameda2, Mayuko Shimizu3, Kohtaro Ujiie4, Akito Tsutsumi5, Minoru Ikehara6, Masaoki Uno7, Asuka Yamaguchi8, Yohei Hamada9, Yuka Namiki5 and Gaku Kimura10, (1)Oregon State University, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, OR, United States, (2)The University of Tokyo, Tokyo, Japan, (3)JAEA Japan Atomic Energy Agency, Toki, Japan, (4)University of Tsukuba, Tsukuba, Japan, (5)Kyoto University, Kyoto, Japan, (6)Kochi University, Center for Advanced Marine Core Research, Nankoku, Japan, (7)Tohoku University, Sendai, Japan, (8)University of Tokyo, Atmosphere and Ocean Research Institute, Kashiwa, Japan, (9)JAMSTEC Japan Agency for Marine-Earth Science and Technology, Yokohama, Japan, (10)University of Tokyo, Bunkyo-ku, Japan
Similarity and Cluster Analysis of Intermediate Deep Events in the Southeastern Aegean (82003)
Marija Ruscic, University of Kiel, Kiel, Germany, Thomas Meier, Kiel University, Institute of Geosciences, Kiel, Germany, Dirk Becker, University of Hamburg, Hamburg, Germany and Andrea Brüstle, Landesamt für Geologie und Bergbau Rheinland-Pfalz, Mainz, Germany
High Resolution Thermal Model and Heat Flow along the Washington Margin of the Cascadia Subduction Zone (84039)
Marie Salmi, Applied Physics Laboratory University of Washington, Seattle, WA, United States, Robert N Harris, Oregon State University, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, OR, United States, Harlan Paul Johnson, University of Washington, School of Oceanography, Seattle, WA, United States and Evan A Solomon, University of Washington, School of Oceanography, Seattle, United States

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