T011
Multiscale Crustal Deformation in Subduction Zones and the Megathrust Earthquake Cycle: Progress from Observations and Models

Session ID#: 157148

Session Description:
The timescales of deformation in subduction zones span seconds to millions of years. Associated with these timescales is a spectrum of deformation behavior, from elastic to permanent brittle or ductile. The patterns of slip on the plate boundary throughout the megathrust earthquake cycle and the rheology of crust and mantle are central to this deformation. There is also a complex relationship between short- and long-term deformation processes. Observations from modern seismology, geodesy, paleogeodesy, geophysics, and geology along with advances in modeling capabilities are revealing the details of these processes. As a result, there is much new understanding of the crustal deformation at subduction margins across time and space in association with megathrust coupling/slip and subduction zone rheology along with other tectonic and non-tectonic processes. We welcome submissions on all aspects of crustal deformation to explore the geodynamic processes governing earthquake cycles and the long-term evolution of the subduction margins.
Index Terms:

1242 Seismic cycle related deformations [GEODESY AND GRAVITY]
7240 Subduction zones [SEISMOLOGY]
8150 Plate boundary: general [TECTONOPHYSICS]
8170 Subduction zone processes [TECTONOPHYSICS]

Primary Convener:  Haipeng Luo, McGill University, Department of Earth and Planetary Sciences, Montreal, QC, Canada
Conveners:  Matthew W Herman, California State University Bakersfield, Department of Geological Sciences, Bakersfield, CA, United States, Aron J Meltzner, Nanyang Technological University, Asian School of the Environment, Singapore, Singapore and Donna J Shillington, Northern Arizona University, School of Earth and Sustainability, Flagstaff, United States
Student/Early Career Convener:  Haipeng Luo, McGill University, Department of Earth and Planetary Sciences, Montreal, QC, Canada
 
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Marianne Saillard1, Cédric Bulois2, Nicolas Espurt1, François Michaud3, Pedro S. Reyes Benitez4, Diego Barba5, Andréa Peuzin2, Maria Jose Hernandez1, Laure Schenini6, Marc M Regnier1 and Gueorgui Ratzov7, (1)Géoazur - Université Côte d'Azur - IRD - CNRS - Observatoire de la côte d'Azur, Valbonne, France, (2)Géoazur - Université Côte d'Azur - IRD - CNRS - Observatoire de la côte d'azur, Valbonne, France, (3)Géoazur - Sorbonne Université, Valbonne, France, (4)Departamento de Geologίa, Facultad de Ingenierίa en Geologίa y Petrόleos, Escuela Politécnica Nacional, Quito, Ecuador, (5)Petroamazonas EP, Quito, Ecuador, (6)Université Côte d’Azur - CNRS - IRD - Observatoire de la Côte d’Azur, Géoazur, Valbonne, France, (7)Université Côte d’Azur, CNRS, Observatoire de la Côte d’Azur, IRD, Géoazur, Nice, France
 
Seismogenesis in the Guerrero Seismic Gap: A Slow and Fast Slip Swaying (Invited) (1050794)
Victor M Cruz-Atienza1, Josue Tago2, Sara I Franco-Sánchez3, Jorge Arturo Real Sr.4, Carlos Villafuerte5, Vladimir Kostoglodov6, Yoshihiro Ito7, Dario E Solano-Rojas8, Ekaterina Kazachkina9, Arturo Ronquillo10, Anne Becel11, Takuya Nishimura12, Luis Antonio Dominguez13 and Ana Rocher13, (1)Universidad Nacional Autónoma de México, Instituto de Geofísica, Mexico, Mexico, (2)National Autonomous University of Mexico, Faculty of Engineering, Ciudad DE Armería, Mexico, (3)UNAM National Autonomous University of Mexico, Mexico City, Mexico, (4)Universidad Nacional Autonoma de Mexico, Sismilogia, Didtrito Federal, Mexico, (5)Ecole Normale Supérieure Paris, Laboratoire de Géologie, Paris, France, (6)UNAM, Instituto de Geofisica, Mexico City, Mexico, (7)Disaster Prevention Research Institute, Kyoto University, Kyoto, Japan, (8)Universidad Nacional Autónoma de México, Facultad de Ingeniería, División de Ingeniería en Ciencias de la Tierra, Mexico, CDMX, Mexico, (9)National Autonomous University of Mexico, Ciudad DE Armería, Mexico, (10)Universidad Nacional Autonoma de Mexico, Instituto de Ciencias del Mar y Limnologia, Mexico City, Mexico, (11)Lamont -Doherty Earth Observatory, Palisades, NY, United States, (12)Kyoto University, Disaster Prevention Research Institute, Kyoto, Japan, (13)Universidad Nacional Autonoma de Mexico, Instituto de Geofisica, Mexico City, Mexico
 
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Gian Maria Bocchini1, Armin Dielforder2, Kilian B Kemna1, Rebecca M Harrington1, Andrea Hampel2 and Onno Oncken3, (1)Ruhr University Bochum, Institute of Geology, Mineralogy and Geophysics, Bochum, Germany, (2)Leibniz University of Hannover, Institute of Geology, Hannover, Germany, (3)GeoForschungsZentrum GFZ, Potsdam, Germany
 
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Charlotte Pizer1, Jamie Howarth1, Kathryn Clark2, Andy Howell3, Jaime Delano3, Bruce W Hayward4 and Nicola J Litchfield2, (1)Victoria University of Wellington, Wellington, New Zealand, (2)GNS Science, Lower Hutt, New Zealand, (3)University of Canterbury, Christchurch, New Zealand, (4)Geomarine Research, St. John's, Auckland, New Zealand
 
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Junki Komori, Earth Observatory of Singapore, Singapore, Singapore and Ryosuke Ando, University of Tokyo, Department of Earth and Planetary Science, Bunkyo-ku, Japan
 
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Anne Becel1, Brandon Shuck2, Victor M Cruz-Atienza3, Brian Boston4, Donna J Shillington5, Shuoshuo Han6, Jorge Arturo Real Sr.7, Joshua Burstein8, Tanner Michael Acquisto9, Yoshihiro Ito10, Collin Brandl11, Davis Hagemeier12 and Grace Ward8, (1)Lamont -Doherty Earth Observatory, Palisades, NY, United States, (2)Lamont-Doherty Earth Observatory, Palisades, United States, (3)Universidad Nacional Autónoma de México, Instituto de Geofísica, Mexico, Mexico, (4)Lamont-Doherty Earth Observatory of Columbia University, Palisades, NY, United States, (5)Lamont -Doherty Earth Observatory, Palisades, United States, (6)University of Texas, Institute for Geophysics, Austin, TX, United States, (7)Universidad Nacional Autonoma de Mexico, Sismilogia, Didtrito Federal, Mexico, (8)Northern Arizona University, Flagstaff, United States, (9)Columbia University, Lamont-Doherty Earth Observatory, New York, NY, United States, (10)Disaster Prevention Research Institute, Kyoto University, Kyoto, Japan, (11)University of New Mexico Main Campus, Earth and Planetary Sciences, Albuquerque, NM, United States, (12)Lamont Doherty Earth Observatory of Columbia University, Palisades, United States
 
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Tina Dura1, Eileen Hemphill-Haley2, Niamh Cahill3, Harvey M Kelsey2, Andrea Hawkes4, Diego Melgar5, David Bruce1, Isabel Hong6, Simon Engelhart7, Robert Carleton Witter8, Jason Scott Padgett9, Alan R Nelson10, Yvonne Milker11 and Benjamin Peter Horton12, (1)Virginia Polytechnic Institute and State University, Geosciences, Blacksburg, United States, (2)Humboldt State University, Arcata, United States, (3)University of Massachusetts Amherst, Department of Biostatistics and Epidemiology, Amherst, United States, (4)University of North Carolina at Wilmington, Earth and Ocean Sciences, Wilmington, NC, United States, (5)University of Oregon, Department of Earth Sciences, Eugene, OR, United States, (6)Central Washington University, Ellensburg, WA, United States, (7)University of Durham, Department of Geography, Durham, United Kingdom, (8)USGS Alaska Science Center, Anchorage, AK, United States, (9)University of Rhode Island, Department of Geosciences, Narragansett, RI, United States, (10)US Geological Survey, Denver, CO, United States, (11)University of Hamburg, Hamburg, Germany, (12)Rutgers University New Brunswick, Marine and Coastal Sciences, New Brunswick, United States
 
Estimation of fault shear strength and pore fluid pressure of global subduction zones and Oceanic lithosphere from the seismic energy budget (1060894)
Nelson E Pulido, National Research Institute for Earth Science and Disaster Resilience, Earthquake and Tsunami Research Division, Tsukuba, Japan
 
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Madeleine C Lucas1, Harold J Tobin1, Suzanne M Carbotte2, Shuoshuo Han3, Brian Boston4 and Janet Tilden Watt5, (1)University of Washington Seattle, Department of Earth and Space Sciences, Seattle, WA, United States, (2)Lamont-Doherty Earth Observatory of Columbia University, Palisades, United States, (3)University of Texas, Institute for Geophysics, Austin, TX, United States, (4)Lamont-Doherty Earth Observatory of Columbia University, Palisades, NY, United States, (5)U.S. Geological Survey, Santa Cruz, United States
 
Upper plate faulting above a shallow subduction megathrust earthquake: Mechanics and implications of the extreme surface faulting during the 2016 Kaikoura, New Zealand, earthquake (1068662)
Matthew W Herman, California State University Bakersfield, Department of Geological Sciences, Bakersfield, CA, United States, Kevin P Furlong, Penn State Univ, University Park, PA, United States and Harley Benz, USGS National Earthquake Information Center, Golden, CO, United States
 
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Mahsa Afra1, Mitchell Scott Hastings2, Surui Xie3, Esteban Chaves4, Cyril Muller5, Marino Protti5, Rocco Malservisi2, Timothy H Dixon2 and Álvaro Álvarez Calderón6, (1)University of South Florida Tampa, School of Geosciences, Tampa, FL, United States, (2)University of South Florida, School of Geosciences, Tampa, FL, United States, (3)University of Houston, Department of Civil and Environmental Engineering, Houston, United States, (4)Volcanological and Seismological Observatory of Costa Rica (OVSICORI-UNA), Heredia, Costa Rica, (5)Observatorio Vulcanológico y Sismológico de Costa Rica, Heredia, Costa Rica, (6)Instituto Geografico Nacional, Geodinamica, San Jose, Costa Rica
 
Structural variations in the accretionary prism Marine seismic images of the Hikurangi margin, New Zealand, reveal that influence its seismogenic character (1069693)
Harm J Van Avendonk, University of Texas at Austin, Institute for Geophysics, Austin, United States, Andrew Gase, University of Texas, Institute for Geophysics, Austin, United States and Nathan L Bangs, Univ Texas, Institute for Geophysics, Austin, TX, United States
 
Megathrust Earthquakes Cause a Central Shutdown of Seismicity that Lasts for Centuries, and a Surrounding Activation of Seismicity that Lasts for Decades (1069881)
Ross S Stein, Temblor, Inc., Tiburon, CA, United States and Shinji Toda, Tohoku University, Sendai, Japan
 
Mechanical anisotropy of the Main Himalayan Thrust from geodetic modeling and seismic imaging (1070144)
Shaoyang Li, Institute of Geology and Geophysics, Chinese Academy of Sciences, State Key Laboratory of Lithospheric Evolution, Beijing, China, Vera Schulte-Pelkum, Univ Colorado Boulder, Boulder, CO, United States, William D Barnhart, USGS National Earthquake Information Center Golden, Golden, CO, United States and Marianne S. Karplus, University of Texas at El Paso, Geological Sciences, El Paso, TX, United States
 
New Opportunities with the Alaska and Cascadia Near-Trench Community Geodetic Experiment (1071161)
Andrew Vern Newman, Georgia Institute of Technology, Earth and Atmospheric Sciences, Atlanta, GA, United States, Donna J Charlevoix, UNAVCO, Inc. Boulder, Education and Community Engagement, Boulder, CO, United States, Noel M Bartlow, University of Missouri, Columbia, MO, United States, Benjamin A. Brooks, US Geological Survey, Menlo Park, United States, David A Schmidt, University of Washington, Department of Earth and Space Sciences, Seattle, WA, United States, Spahr C Webb, Lamont Doherty Earth Observatory, Palisades, NY, United States and Mark A Zumberge, Univ California San Diego, La Jolla, United States
 
New GNSS and geological data from the Indo-Burman subduction zone indicate active convergence on both a locked megathrust and the Kabaw Fault (1072276)
Michael S Steckler, Columbia University of New York, Lamont-Doherty Earth Observatory, Palisades, NY, United States, Bar Oryan, Ecole Normale Supérieure Paris, Paris, France, Paul M Betka, George Mason University, Fairfax, United States, Scott L Nooner, University of North Carolina at Wilmington, Dept of Earth and Ocean Sciences, Wilmington, NC, United States, Eric Ostrom Lindsey, Scripps Institution of Oceanography, La Jolla, United States; University of New Mexico, Department of Earth and Planetary Sciences, Albuquerque, United States, Dhiman Ranjan Mondal, MIT Haystack Observatory, Westford, MA, United States, Austin Mathews, George Mason University Fairfax, Fairfax, VA, United States, Syed Humayun Akhter, Bangladesh Open University, Gazipur, Bangladesh, Sanju Singha, University of Dhaka, Geology Department, Dhaka, Bangladesh and Oo Than, Department of Meteorology and Hydrology, Naypyidaw, Myanmar
 
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Viven Sharma, University of Minnesota Twin Cities, Minneapolis, MN, United States and Ikuko Wada, Department of Earth Sciences, Minneapolis, United States
 
Seismic reflection imaging of along-strike changes in forearc structure in the Andreanof segment of the Aleutian subduction zone (1076457)
Valeria Cortes-Rivas, Northern Arizona University, Flagstaff, AZ, United States, Donna J Shillington, Northern Arizona University, School of Earth and Sustainability, Flagstaff, United States, Daniel Lizarralde, Woods Hole Oceanographic Institution, Geology and Geophysics, Woods Hole, MA, United States, Hannah Mark, Woods Hole Oceanographic Institution, Woods Hole, United States, Justin Estep, Main Marine Academy, CED-General Consulting, Castine, United States and Brian Boston, Lamont-Doherty Earth Observatory of Columbia University, Palisades, NY, United States
 
Structural Mapping of the Eclogite Zone, Tauern Window: Implications for the rheology of the subduction zone interface (1080102)
Leif Tokle, ETH Zurich, Zürich, State (optional), Switzerland, Whitney M Behr, ETH Zurich, Structural Geology and Tectonics Group, Geological Institute, Zurich, Switzerland, Zoe Braden, University of Northern British Columbia, Prince George, Canada and Miguel Cisneros, Structural Geology and Tectonics Group, Geological institute, ETH Zurich, Zurich, Switzerland
 
Uplift of Southern Sumatra, Indonesia, from Marine Terraces (1082784)
Jennifer Quye-Sawyer, Earth Observatory of Singapore, Singapore, Singapore, Aron J Meltzner, Nanyang Technological University, Asian School of the Environment, Singapore, Singapore, Kyle E Bradley, Earth Observatory of Singapore, Asian School of the Environment, Singapore, Singapore and Rei Ong, Nanyang Technological University, Singapore, Singapore
 
The Flores Thrust and Its Interplay with Arc Volcanism (1083774)
Harisma Andikagumi, Nanyang Technological University, Earth Observatory of Singapore, Singapore, Singapore and Kyle E Bradley, Earth Observatory of Singapore, Asian School of the Environment, Singapore, Singapore
 
Assessing Holocene Fault Movement along the Hinagu Fault Zone using Paleo-Sea Level Extents at Kawata Machinishi, Kumamoto, Japan (1084017)
Evan Tam, Atmosphere and Ocean Research Institute University of Tokyo, Tokyo, Japan, Yusuke Yokoyama, The University of Tokyo, Graduate Program on Environmental Sciences, Graduate School of Arts and Sciences, Tokyo, Japan, Yukari Miyashita, AIST - National Institute of Advanced Industrial Science and Technology, Research Institute of Earthquake and Volcano Geology, Tsukuba, Japan, Glenn A. Milne, University of Ottawa, Earth and Environmental Sciences, Ottawa, ON, Canada and Yosuke Miyairi, AORI, The University of Tokyo, Kashiwa-Shi, Chiba, Japan
 
The role of Viscous Relaxation on the Interseismic Deformation Pattern along the Caribbean of Colombia (1084573)
Sindy Carolina Lizarazo, Graduate School of Environmental Studies - Nagoya University, Nagoya, Japan, Takeshi Sagiya, Disaster Mitigation Research Center - Nagoya University, Nagoya, Japan and Héctor Mora-Páez, Servicio Geológico Colombiano, Bogota, Colombia
 
Alaska Subduction Zone Shallow Megathrust Slip Variability Revealed by Seafloor Geodesy (1088128)
Benjamin A. Brooks1, Dara E Goldberg2, John Boone DeSanto3, Sarah E Minson4, Todd L Ericksen5, James Foster6, Spahr C Webb7, Scott L Nooner8, C David Chadwell9, Peter J Haeussler10, Robert Carleton Witter10 and Jeff Freymueller11, (1)U.S. Geological Survey, Earthquake Science Center, Menlo Park, CA, United States, (2)USGS National Earthquake Information Center, Golden, United States, (3)University of Washington, Department of Earth and Space Sciences, Seattle, United States, (4)U.S. Geological Survey, Earthquake Science Center, Moffett Field, United States, (5)USGS, Earthquake Science Center, Moffett Field, CA, United States, (6)University of Stuttgart, Stuttgart, Germany, (7)Lamont Doherty Earth Observatory, Palisades, NY, United States, (8)University of North Carolina at Wilmington, Dept of Earth and Ocean Sciences, Wilmington, NC, United States, (9)University of California San Diego, La Jolla, CA, United States, (10)USGS Alaska Science Center, Anchorage, AK, United States, (11)University of Alaska Fairbanks, Fairbanks, AK, United States
 
Tsunami scenarios in the Indian Ocean from coupling-derived simulations of Markan great subduction zone earthquakes (1088597)
Guo Cheng, University of Iowa, Iowa City, IA, United States, William D Barnhart, USGS National Earthquake Information Center Golden, Golden, CO, United States and David Small, University of Oregon, Eugene, OR, United States
 
Spatial patterns of long-term forearc uplift inferred from river profiles, and their comparison with short-term deformation (1088680)
Bar Oryan, Ecole Normale Supérieure Paris, Paris, France, Jean-Arthur L Olive, WHOI, Woods Hole, United States, Luca Claude Malatesta, Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences, Potsdam, Germany, Boris Gailleton, University of Edinburgh, School of Geosciences, Edinburgh, EH9, United Kingdom and Romain Jolivet, Ecole Normale Supérieure, PSL Research University, CNRS UMR 8538, Laboratoire de Géologie, Paris, France
 
Forearc Strain Partitioning in the Martinique-Antigua sector of the Lesser Antilles Subduction Zone (1090323)
Gaëlle Bénâtre1, Nathalie Feuillet1, Helene Delphine Carton1, Thibaud Pichot2, Eric Jacques1, Christine Deplus1,3 and Frédérique Leclerc4, (1)Institut de Physique du Globe de Paris, Université Paris-Cité, Paris, France, (2)Beicip-Franlab, Rueil-Malmaison, France, (3)CNRS, Paris Cedex 16, France, (4)Géoazur-Université Côte d'Azur, Valbonne, France
 
Excess Cumulative Stress at the Tokai Section of the Nankai Megathrust from Combinatorial Optimization of Earthquake Distributions (1092341)
Eric L Geist and Tom Parsons, USGS, Menlo Park, CA, United States
 
Influence of outer-rise faults on sediment flux and décollement heterogeneity at the Japan trench (1095462)
Emily Schottenfels1, Christine Regalla1 and Yasuyuki Nakamura2, (1)Northern Arizona University, Flagstaff, United States, (2)Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokohama, Japan
 
Bridging Time Scales between Great Megathrust Earthquakes and Long-Term Plate Motion (1095476)
Jiaqi Fang, California Institute of Technology, Pasadena, CA, United States, Michael Gurnis, California Institute of Technology, Pasadena, United States and Nadia Lapusta, California Institute of Technology, Seismological Laboratory, Pasadena, United States
 
Characterizing Spatial Patterns and Timescales of Early Postseismic Deformation of Megathrust Earthquakes (1096109)
Segun Bodunde and Junle Jiang, University of Oklahoma Norman Campus, School of Geosciences, Norman, United States
 
Short-duration Far-field Postseismic Deformation of the 2012 Mw 7.8 Haida Gwaii Earthquake and Its Implications to Regional Rheological Structure (1098552)
Yijie Zhu, University of Victoria, School of Earth and Ocean Sciences, Victoria, BC, Canada, Kelin Wang, Pacific Geoscience Centre, Geological Survey of Canada, Sidney, BC, Canada, Yan Jiang, Geological Survey of Canada, Sidney, Canada and Xin Zhou, National Institue of Natural Hazards, Beijing, China
 
Coastal deformation and paleo-earthquake records inferred from uplifted corals on Cheduba Island, western Myanmar (1098922)
Aileen Hoyle1, J Bruce H Shyu2, Yu Wang1, Hong-Wei Chiang3, Chuan-Chou Shen4 and Soe Thura Tun5, (1)Department of Geosciences, National Taiwan University, Taipei, Taiwan, (2)Department of Geoscience, National Taiwan University, Taipei, Taiwan, (3)Research Center for Environmental Changes, Academia Sinica, Taipei, Taiwan, (4)High‐precision Mass Spectrometry and Environment Change Laboratory (HISPEC), Department of Geosciences, Taipei, Taiwan, (5)Myanmar Earthquake Committee, Yangon, Myanmar
 
Adjoint tomography of an accretionary wedge and shallow slow-slip regions in the North Island of New Zealand (1100632)
Shun Adachi, Kyoto University, Kyoto, Japan, Bryant Chow, University of Alaska - Fairbanks, Fairbanks, United States and Yoshihiro Kaneko, Kyoto University, Graduate School of Science, Kyoto, Japan
 
Propagation of Serpentinization in the Mantle Wedge Corner (1101338)
Jeremiah McElwee1, Ikuko Wada1, Kazuki Yoshida2, Hiroyuki Shimizu3 and Atsushi Okamoto2, (1)University of Minnesota Twin Cities, Earth and Environmental Sciences, Minneapolis, United States, (2)Tohoku University, Graduate School of Environmental Studies, Sendai, Japan, (3)Kajima Corporation, Geotechnical Analysis Group, Advanced Analysis Department, Civil Engineering Design Division, Tokyo, Japan
 
Shattered veins elucidate brittle creep processes in the deep slow slip and tremor region (1103277)
Jesús Munoz, ETH Swiss Federal Institute of Technology Zurich, Structural Geology and Tectonics, Zurich, Switzerland, Samuel Angiboust, ENS Lyon, Lyon, France, Antonio García-Casco, Department of Mineralogy and Petrology, Faculty of Sciences, University of Granada, Granada, Spain and Tom Raimondo, University of South Australia, School of Natural and Built Environments, Adelaide, Australia
 
Near-Trench Postseismic Subsidence Following the 2011 Tohoku-oki Earthquake Revealed by GNSS-Acoustic Observations (1105195)
Fumiaki Tomita1, Motoyuki Kido2, Chie Honsho3, Takeshi Iinuma4, Yusaku Ohta3, Ryota Hino3, Tianhaozhe Sun5, Haipeng Luo6 and Kelin Wang7, (1)Tohoku University, International Research Institute of Disaster Science, Sendai, Japan, (2)Tohoku University, International Research Institude of Disaster Science, Sendai, Japan, (3)Tohoku University, Graduate School of Science, Sendai, Japan, (4)International Research Institute of Disaster Science, Sendai, Japan, (5)Geological Survey of Canada, Pacific Geoscience Centre, Sidney, BC, Canada, (6)McGill University, Department of Earth and Planetary Sciences, Montreal, QC, Canada, (7)Pacific Geoscience Centre, Geological Survey of Canada, Sidney, BC, Canada
 
Near-trench coupling conditions offshore the Nicoya Peninsula, Costa Rica and Southern Nicaragua. (1106948)
Mitchell Scott Hastings1, Eric Ostrom Lindsey2, Timothy H Dixon3 and Surui Xie3, (1)University of South Florida Tampa, Tampa, FL, United States, (2)Scripps Institution of Oceanography, La Jolla, United States, (3)University of South Florida, School of Geosciences, Tampa, FL, United States
 
Afterslip of the Mw 8.3 2015 Illapel Earthquake Imaged Through a Time-Dependent Inversion of Continuous and Survey GNSS Data (1107329)
Roxane Tissandier1, Jean-Mathieu Nocquet1,2, Emilie Klein3, Christophe Vigny3, Javier Ojeda1,4 and Sergio Ruiz4, (1)Institut de Physique du Globe de Paris, Paris, France, (2)Géoazur - Université Nice Sophia Antipolis, Valbonne, France, (3)Ecole Normale Supérieure, PSL Research University, CNRS UMR 8538, Laboratoire de Géologie, Paris, France, (4)Universidad de Chile, Departamento de Geofísica, Santiago, Chile
 
Detecting Recent Splay Fault Activity in the Cascadia Accretionary Wedge using High-Resolution Seismic Reflection Profiles (1114315)
Anna Ledeczi, University of Washington Seattle, Department of Earth and Space Sciences, Seattle, United States, Harold J Tobin, University of Washington Seattle, Department of Earth and Space Sciences, Seattle, WA, United States and Janet Tilden Watt, U.S. Geological Survey, Santa Cruz, United States
 
Fluids at slow slip megathrust zone supplied by consolidation of clay-rich, volcaniclastic subducting upper crust (1117070)
Andrew Gase1, Nathan L Bangs2, Shuoshuo Han3, Demian Saffer4, Rebecca E Bell5, Richard Gareth Davy5, Laura Frahm6, Daniel H N Barker7, Ryuta Arai8, Shuichi Kodaira9 and Stuart A Henrys7, (1)University of Texas at Austin, Austin, TX, United States, (2)Univ Texas, Institute for Geophysics, Austin, TX, United States, (3)University of Texas, Institute for Geophysics, Austin, TX, United States, (4)University of Texas Institute for Geophysics, Austin, United States, (5)Imperial College London, Department of Earth Science and Engineering, London, United Kingdom, (6)Imperial College London, Department of Earth Science and Engineering, London, SW7, United Kingdom, (7)GNS Science, Lower Hutt, New Zealand, (8)University of Hawaii at Manoa, Honolulu, United States, (9)Yokohama National University, Yokohama, Japan
 
Timing and Size of Great and Giant Chilean Earthquakes Controlled by Lithological Changes Along the Subduction Megathrust (1117892)
Joaquín Julve1, Marcos Moreno2, Andres Tassara1, Sylvain Barbot3, Rodolfo Araya4, Jorge G. F. Crempien5 and Nicole Catalan1, (1)University of Concepcion, Concepcion, Chile, (2)University of Concepcion, Department of Geophysics, Concepcion, Chile, (3)University of Southern California, Department of Earth Sciences, Los Angeles, United States, (4)University of Concepcion, Concepción, Chile, (5)Pontificia Universidad Católica de Chile, Deparment of Structural and Geotechnical Engineering, Santiago, Chile
 
Extreme Sediment Accretion: Shear-Velocity Structure across the Indo-Burman Forearc Margin from Joint Inversion of Surface-Wave and Scattering Constraints (1119476)
Christopher James William Carchedi, Columbia University of New York, Lamont-Doherty Earth Observatory, Palisades, NY, United States, James B Gaherty, School of Earth and Sustainability, Northern Arizona University, Flagstaff, United States, Stephane Rondenay, University of Bergen, Department of Earth Science, Bergen, Norway, Rasheed Ajala, Louisiana State University, Department of Geology and Geophysics, Baton Rouge, United States; Lamont-Doherty Earth Observatory, Columbia University, Palisades, United States, Patricia Persaud, Louisiana State University, Baton Rouge, LA, United States, Md. Samiul Alim, University of Mississippi Main Campus, University, United States, Syed Humayun Akhter, Bangladesh Open University, Gazipur, Bangladesh, Eric A Sandvol, University of Missouri, Department of Geological Sciences, Columbia, MO, United States and Michael S Steckler, Columbia University, Lamont Doherty Earth Observatory, Palisades, United States
 
Multi-scale Characterization of a Major Subduction Zone Splay Fault: the Deception Creek Strand of the Patton Bay Fault, Montague Island, Alaska (1122285)
Alysa Fintel, University of Washington Seattle, Seattle, United States, Harold J Tobin, University of Washington Seattle, Department of Earth and Space Sciences, Seattle, WA, United States and Peter J Haeussler, U.S. Geological Survey, Anchorage, United States
 
Rupture complexity in a data-integrated numerical model for the 2021 M8.2 Chignik earthquake: implications for rupture asperities and tsunami hazards (1122495)
Duo Li1, Bo LI2, Thomas Ulrich3, Shihao Yuan2, James Biemiller4, Alice-Agnes Gabriel5, Kang Wang6 and Roland Burgmann7, (1)Ludwig-Maximilians-Universität (LMU) München, Earth and Environmental Sciences, Munich, Germany, (2)Ludwig Maximilians University of Munich, Munich, Germany, (3)Ludwig Maximilian University of Munich, Department of Earth and Environmental Sciences, Munich, Germany, (4)University of Texas, Austin, United States, (5)Ludwig-Maximilians-Universität, Earth and Environmental Sciences, Munich, Germany, (6)University of California, Berkeley, Seismological Laboratory, Berkeley, United States, (7)Department of Earth and Planetary Science, University of California Berkeley, Berkeley, United States
 
In situ stress within the Nankai accretionary prism determined from borehole breakouts (1125172)
Kaitlin Schaible, University of Texas at Austin, Austin, TX, United States and Demian M Saffer, University of Texas at Austin, Austin, United States
 
Investigating the Potential of Multisequence Displacement Timeseries for Fault Rheology Estimation (1129298)
Tobias Köhne, Rishav Mallick and Mark Simons, California Institute of Technology, Pasadena, United States
 
Modeling Subduction Interface Shear Zone Seismic Anisotropy and Resulting Receiver Functions (1129364)
Carolyn M Tewksbury-Christle, Fort Lewis College, Geosciences Department, Durango, United States, Vera Schulte-Pelkum, Univ Colorado Boulder, Boulder, CO, United States and Whitney M Behr, ETH Zurich, Structural Geology and Tectonics Group, Geological Institute, Zurich, Switzerland
 
Searching for empirical links between shaking and turbidity current generation in the Cascadia Subduction Zone (1130901)
Valerie J Sahakian, University of Oregon, Department of Earth Sciences, Eugene, OR, United States, Deborah Lyman Kilb, Scripps Institution of Oceanography, La Jolla, CA, United States, Marcus Chaknova, University of Oregon, Earth Sciences, Eugene, United States, Fabio Cabrera De Leo, University of Victoria, Department of Biology, Victoria, BC, Canada, Maureen Walczak, Oregon State University, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, United States and Jenna C Hill, U.S. Geological Survey, Pacific Coastal and Marine Science Center, Santa Cruz, United States
 
Stress loading on the intra-plate faults in western Japan due to the 1944 Tonankai and 1946 Nankai earthquakes (1132228)
Akinori Hashima1, Takane Hori2, Takeshi Iinuma3, Souta Murakami4, Tsuyoshi Ichimura5 and Kohei Fujita5, (1)JAMSTEC Japan Agency for Marine-Earth Science and Technology, Yokohama, Japan, (2)Japan Agency for Marine-Earth Science and Technology (JAMSTEC), R&D Center for Earthquake and Tsunami Forecasting, Yokohama, Japan, (3)JAMSTEC Japan Agency for Marine-Earth Science and Technology, Research and Development Center for Earthquake and Tsunami, Kanagawa, Japan, (4)Earthquake Research Institute, University of Tokyo, Tokyo, Japan, (5)Earthquake Research Institute, The University of Tokyo, Tokyo, Japan
 
Geomorphic expression of graben subduction and implications for décollement evolution at the Japan Trench (1137886)
Christine Regalla and Emily Schottenfels, Northern Arizona University, Flagstaff, United States
 
A 3-D seismic velocity model across the south-central Cascadia subduction margin (1138554)
Asif Ashraf, University of Oregon, Department of Earth Sciences, Eugene, United States, Emilie E E Hooft, University of Oregon, Department of Earth Sciences, Eugene, OR, United States, Anne M Trehu, Oregon State University, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, United States, Sarah Nolan, Oregon State University, CEOAS, Corvallis, OR, United States, Erin Wirth, USGS, Seattle, WA, United States, Kevin Michael Ward, South Dakota School of Mines and Technology, Rapid City, SD, United States and Ian Stone, USGS, Seattle, United States
 
Bayesian Inversion for Spatially Variable Fault Frictional Properties and Mantle Rheology Using Postseismic Geodetic Measurements (1142466)
Junichi Fukuda, University of Tokyo, Earthquake Research Institute, Tokyo, Japan and Sylvain Barbot, University of Southern California, Department of Earth Sciences, Los Angeles, United States
 
Towards Estimating Postseismic Parameters and Processes Using Ensemble Data Assimilation (1142510)
Celine Marsman1, Femke C Vossepoel2, Ylona van Dinther1 and Rob Govers3, (1)Utrecht University, Department of Earth Sciences, Utrecht, Netherlands, (2)Delft University of Technology, Geoscience and Engineering, Delft, Netherlands, (3)Utrecht University, Faculty of Geosciences, Department of Earth Sciences, Utrecht, Netherlands
 
Effects of elevated fluid pressure on absolute strength, brittle-ductile transition, and depth-dependent seismicity in the western Taiwan plate boundary (1143365)
Yi-Rong Yang1, John Suppe2, Kaj M Johnson3, Tai-Tien Wang1, En-Chao Yeh4 and Fu-Shu Jeng1, (1)National Taiwan University, Department of Civil Engineering, Taipei, Taiwan, (2)University of Houston, Department of Earth and Atmospheric Sciences, Houston, TX, United States, (3)Indiana University, Bloomington, IN, United States, (4)National Taiwan Normal Univ., Department of Earth Sciences, Taipei, Taiwan
 
Structure and slip behavior at the Kermadec subduction zone: apparent ‘characteristic’ megathrust slip in the 2021 Mw8.1 earthquake sequence (1145977)
Karen Lythgoe1, Kyle E Bradley1, Hongyu Zeng2 and Shengji Wei1, (1)Earth Observatory of Singapore, Singapore, Singapore, (2)Asian School of the Environment, Nanyang Technological University, Singapore, Singapore
 
Earthquake Cycles and Tsunamigenic Events from Andaman Island along Andaman-Sumatra Subduction Zone: Record of Recurrence Patterns and Land-level Changes during the last 3500 years (1147952)
Afzal Khan, Indian Institute of Technology Kanpur, Department of Civil Engineering, Kanpur, India and Javed N Malik, Indian Institute of Technology Kanpur, Department of Earth Sciences, Kanpur, India
 
Role of the Andean structure in the Post-Seismic Deformation Following the 2014 Mw 8.1 Iquique Earthquake in Chile: New insights from a Finite Element Model Constrained by GNSS and InSAR Data (1150846)
Juliette Cresseaux1, Anne Socquet2, Mathilde Radiguet3, Marie-Pierre Doin4, David Marsan5, Mathilde Marchandon6, Flora Huiban7, Rémi Molaro-Maqua1, Marcos Moreno8 and Gaëlle Deschamps-Huygen1, (1)University Grenoble Alpes, Grenoble, France, (2)ISTerre Institute of Earth Sciences, Saint Martin d'Hères, France, (3)Université Grenoble Alpes, ISTerre, Grenoble, France, (4)Université Grenoble Alpes, Grenoble, France, (5)University Grenoble Alpes, ISTerre, Grenoble, France, (6)Ludwig-Maximilians-Universität, Earth and Environmental Sciences, Munich, Germany, (7)University of Copenhagen, Department of Geosciences and Natural Resource Management, København K, Denmark, (8)University of Concepcion, Department of Geophysics, Concepcion, Chile
 
Variation of Plate interface strength inferred from global forward and adjoint-based inverse mantle convection models (1154085)
Jiashun Hu, Southern University of Science and Technology, Department of Earth and Space Sciences, Shenzhen, China, Michael Gurnis, California Institute of Technology, Pasadena, United States, Johann Rudi, Virginia Tech, Department of Mathematics, Blacksburg, United States, Georg Stadler, New York University, Courant Institute of Mathematical Sciences, New York, NY, United States and Hao Zhou, Southern University of Science and Technology, Department of Earth and Space Sciences, Shezhen, China
 
Consolidation behavior of sediments along the Eastern Aleutian subduction zone: Implications for the evolution of physical properties and overpressure beneath the megathrust (1156296)
Peter Miller, University of Texas at Austin, Austin, TX, United States, Demian Saffer, University of Texas Institute for Geophysics, Austin, United States and Donna J Shillington, Lamont -Doherty Earth Observatory, Palisades, United States
 
Imaging structural heterogeneity around the Kodiak megathrust using high-frequency P-to-S mode conversions (1158246)
Kiara Andrea Andrea Daly, Cornell University, Ithaca, NY, United States and Geoffrey A Abers, Cornell University, Ithaca, United States
 
Variations in Subduction Bending-Related Normal Faulting of the Incoming Juan de Fuca Plate Along the Cascadia Margin (1159388)
Pinar Gurun, Dalhousie University, Halifax, NS, Canada, Mladen R Nedimovic, National Facility for Seismic Imaging (NFSI), Halifax, NS, Canada, Suzanne M Carbotte, Lamont-Doherty Earth Obs, Palisades, NY, United States, Brian Boston, Lamont-Doherty Earth Observatory of Columbia University, Palisades, NY, United States, Shuoshuo Han, University of Texas, Institute for Geophysics, Austin, TX, United States, Brandon Shuck, University of Texas at Austin, Institute for Geophysics & Department of Geological Sciences, Austin, TX, United States and Juan Pablo Canales, Woods Hole Oceanographic Inst, Geology and Geophysics, Woods Hole, MA, United States
 
Seismic imaging across a slow slip event area, along the Ecuadorian subduction zone (1159683)
Alexandra Skrubej1, Audrey Galve2, Mireille Laigle2, Andreas Rietbrock3, Alessandra Ribodetti2, Laure Schenini4, Laure Combe4, Caroline Chalumeau5, Philippe Charvis2, Davide Oregioni2 and Hans Agurto-Detzel6, (1)Université Côte d’Azur - CNRS - IRD - Observatoire de la Côte d’Azur, Géoazur, Washington, United States, (2)Université Côte d’Azur, CNRS, IRD, Observatoire de la Côte d’Azur, Géoazur, Valbonne, France, (3)Karlsruhe Institute of Technology, Karlsruhe, Germany, (4)Université Côte d’Azur - CNRS - IRD - Observatoire de la Côte d’Azur, Géoazur, Valbonne, France, (5)Université Côte d’Azur, CNRS, IRD, OCA, Géoazur, Valbonne, France, (6)Karlsruhe Institute of Technology, Karlsruhe, Brazil
 
Cascadia 2021: Developing a 3-D Seismic Velocity Model Across the Central Cascadia Subduction Margin (1161092)
Sarah Nolan1, Anne M Trehu1, Emilie E E Hooft2, Asif Ashraf3, Erin Wirth4, Kevin Michael Ward5 and Ian Stone6, (1)Oregon State University, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, United States, (2)University of Oregon, Department of Earth Sciences, Eugene, OR, United States, (3)University of Oregon, Department of Earth Sciences, Eugene, United States, (4)USGS, Seattle, WA, United States, (5)South Dakota School of Mines and Technology, Rapid City, SD, United States, (6)USGS, Seattle, United States
 
Fluids Circulation in Subduction Zones: How Fluids Impact Seismic/Aseismic Slip in Ecuador ? (1161652)
Audrey Galve1, Andreas Rietbrock2, Alessandra Ribodetti1, Mireille Laigle1, François Michaud3, Louis Géli4, Jerome Lebrun5, Nadaya Cubas6, Jean-Noel Proust7, Alexandra Skrubej1, Monica Segovia8, Michele Paulatto9 and Laura M Wallace10, (1)Université Côte d’Azur, CNRS, IRD, Observatoire de la Côte d’Azur, Géoazur, Valbonne, France, (2)Karlsruhe Institute of Technology, Karlsruhe, Germany, (3)Géoazur - Sorbonne Université, Valbonne, France, (4)Ifremer, Dpt Geosciences Marines, Plouzané, France, (5)Laboratoire d'Informatique, Signaux, et Systèmes de Sophia-Antipolis (I3S), CNRS, Valbonne, France, (6)Sorbonne Université, CNRS-INSU, Institut des Sciences de la Terre Paris, Paris, France, (7)CNRS, Rennes, France, (8)GeoAzur, Valbonne, France, (9)University of Oxford, Oxford, United Kingdom, (10)University of Texas at Austin, Institute for Geophysics, Austin, United States
 
Evaluating Mountain Building along the Cascadia Forearc from Basin-Averaged Erosion Rates and Channel Steepness (1161825)
William Hefner1, Eric Kirby1, Paul R Bierman2, Lee B Corbett2, Katherine Worms3 and Matthew C Jungers4, (1)University of North Carolina at Chapel Hill, Chapel Hill, United States, (2)University of Vermont, Burlington, United States, (3)Oregon Sate University, Corvallis, United States, (4)Denison University, Department of Geosciences, Granville, OH, United States
 
SCENTAR: A Nodal Array to Study the Structure and Seismogenic Behavior of the Southern Cascadia Forearc (1162003)
Jonathan R Delph1, Amanda M Thomas2, Adrian Christian Stanciu3, Khurram Aslam2, Avigyan Chatterjee4 and Vincent Sassard1, (1)Purdue University, Earth, Atmospheric, and Planetary Sciences, West Lafayette, IN, United States, (2)University of Oregon, Department of Earth Sciences, Eugene, United States, (3)Sandia National Laboratories, Department of Geophysics, Albuquerque, United States, (4)The University of Texas at Austin, Jackson School of Geosciences, Austin, United States
 
Upper-plate deformation in southern Cascadia in response to the NNW-migration of non-subduction tectonic processes over the past 6 million years (1162182)
Kirsty A McKenzie1, Kevin P Furlong2, Eric Kirby1 and William Hefner1, (1)University of North Carolina at Chapel Hill, Chapel Hill, United States, (2)Pennsylvania State University Main Campus, University Park, United States
 
Modeling Subduction Earthquake Dynamics and Quartz Plasticity at the Bottom of the Seismogenic Zone (1163146)
John Noel Hooker, University of the Incarnate Word, Department of Atmospheric Science, Environmental Science, and Physics, San Antonio, United States, Donald M Fisher, Pennsylvania State University, Department of Geosciences, University Park, United States and Andrew Smye, Pennsylvania State University Main Campus, Department of Geosciences, University Park, United States
 
On the cause of enhanced landward motion of the overriding plate after a major subduction earthquake (1163948)
Mario D'Acquisto, Utrecht University, Department of Earth Sciences, Utrecht, Netherlands, Matthew W Herman, California State University Bakersfield, Department of Geological Sciences, Bakersfield, CA, United States; Utrecht University, Utrecht, Netherlands, Riccardo Riva, Delft University of Technology, Geoscience and Remote Sensing, Delft, Netherlands and Rob Govers, Utrecht University, Faculty of Geosciences, Department of Earth Sciences, Utrecht, Netherlands
 
Analysis of an Earthquake Cluster outboard of Kodiak Island, AK and its Tectonic Implications (1164349)
Kevin Pszczola, Western Washington University, Geology Department, Bellingham, United States, Emily C Roland, Western Washington University, Geology Department and Marine and Coastal Sciences Program, Bellingham, WA, United States, Grace Barcheck, Cornell University, Earth and Atmospheric Sciences, Ithaca, NY, United States, Geoffrey A Abers, Cornell University, Ithaca, United States and Susan Y Schwartz, University of California-Santa Cruz, Santa Cruz, CA, United States
 
Seismic Imaging of the Ecuadorian Subduction Zone : From Conventional Seismic Processing to Advanced Imaging Workflow (1166706)
Laure Schenini1, Alessandra Ribodetti2, Mireille Laigle2, Alexandra Skrubej2, Laure Combe1, Audrey Galve2, Andreas Rietbrock3 and François Michaud4, (1)Université Côte d’Azur - CNRS - IRD - Observatoire de la Côte d’Azur, Géoazur, Valbonne, France, (2)Université Côte d’Azur, CNRS, IRD, Observatoire de la Côte d’Azur, Géoazur, Valbonne, France, (3)Karlsruhe Institute of Technology, Karlsruhe, Germany, (4)Géoazur - Sorbonne Université, Valbonne, France
 
What Did the 1700 AD Cascadia Earthquake Look Like? : Correlating Deformation and Tsunami Inundation Modeling with Paleoseismic Clues (1169374)
David Small, University of Oregon, Eugene, OR, United States and Diego Melgar, University of Oregon, Department of Earth Sciences, Eugene, OR, United States
 
Fluid flow within the shallow forearc of the Cascadia Subduction Zone: Seismic imaging, high-resolution ROV mapping, and gas/fluid geochemistry (1174482)
Jeffrey W Beeson1,2, Tamara Baumberger1,2, Susan G Merle1,2, Anson MacKenzie Antriasian1,2, Anne M Trehu3, David A Butterfield4,5, Nathaniel J Buck4,5, Guang-Sin Lu4,5, Kevin K Roe4,5, Brian Boston6, Suzanne M Carbotte7, Shuoshuo Han8 and Harold J Tobin9, (1)Oregon State University, Cooperative Institute for Marine Ecosystem and Resource Studies, Newport, United States, (2)NOAA Pacific Marine Environmental Laboratory, Newport, United States, (3)Oregon State University, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, United States, (4)University of Washington, Cooperative Institute for Climate, Ocean & Ecosystem Studies, Seattle, United States, (5)NOAA Pacific Marine Environmental Laboratory, Seattle, United States, (6)Lamont-Doherty Earth Observatory of Columbia University, Palisades, NY, United States, (7)Lamont-Doherty Earth Obs, Palisades, NY, United States, (8)University of Texas at Austin, Institute for Geophysics, Austin, TX, United States, (9)University of Washington Seattle, Department of Earth and Space Sciences, Seattle, WA, United States
 
Present-day high resolution locking distribution in the 1730 Central Chile seismic gap from GNSS and Sentinel-1 InSAR data (1180477)
Marcos Moreno1, Juan CARLOS Baez Sr2, Francisco Ortega-Culaciati3, Jorge G. F. Crempien4, Valeria Becerra5, Joaquín Hormazábal6, Sabrina Metzger7, Christian Sippl8, Jonathan R. Bedford7 and Jesus Pina-Valdes9, (1)University of Concepcion, Department of Geophysics, Concepcion, Chile, (2)University of Chile, Santiago, Chile, (3)University of Chile, FCFM - Department of Geophysics, Advanced Mining Technology Center, Santiago, Chile, (4)Pontificia Universidad Católica de Chile, Deparment of Structural and Geotechnical Engineering, Santiago, Chile, (5)Pontifical Catholic University of Chile, Santiago, Chile, (6)University of Chile, FCFM - Department of Geophysics, Santiago, Chile, (7)Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences, Potsdam, Germany, (8)Deutsches GeoForschungsZentrum GFZ, Potsdam, Germany, (9)University of Concepcion, Los Angeles, Chile
 
Multiscale-imaging of the ~90mm/y Taiwan arc-continent collision from the surface to the transition zone (1181347)
John Suppe, University of Houston, Department of Earth and Atmospheric Sciences, Houston, TX, United States, Yu-Huan Hsieh, Department of Earth and Atmospheric Sciences, University of Houston, Houston, United States, Sara Carena, Ludwig-Maximilians University, Earth and Environmental Sciences, Munich, Germany, Hsin-Hua Huang, Academia Sinica, Institute of Earth Sciences, Taipei, Taiwan and Char-Shine Liu, National Taiwan University, Ocean Center, Taipei, Taiwan
 
Low Permeability Faults Inhibit Fluid Expulsion from the Northern Hikurangi Subduction Margin (1181534)
Shuoshuo Han1, Nathan L Bangs2, Andrew Gase3, Rebecca E Bell4, Ryuta Arai5, Shuichi Kodaira6, Daniel H N Barker7, Stuart A Henrys7, Harold J Tobin8, Gregory F Moore9, Richard Gareth Davy4 and Laura Frahm10, (1)University of Texas at Austin, Institute for Geophysics, Austin, TX, United States, (2)Univ Texas, Institute for Geophysics, Austin, TX, United States, (3)University of Texas at Austin, UTIG, Austin, United States, (4)Imperial College London, Department of Earth Science and Engineering, London, United Kingdom, (5)University of Hawaii at Manoa, Honolulu, United States, (6)Yokohama National University, Yokohama, Japan, (7)GNS Science, Lower Hutt, New Zealand, (8)University of Washington Seattle, Department of Earth and Space Sciences, Seattle, WA, United States, (9)University of Hawaii at Manoa, Earth Sciences, Honolulu, HI, United States, (10)Imperial College London, Department of Earth Science and Engineering, London, SW7, United Kingdom
 
From millions of years to sub-second time scales in subduction earthquake sequence models: linking slab, mantle and surface displacements. (1182025)
Mhina Suzanne de Vos1, Ylona van Dinther1 and Taras Gerya2, (1)Utrecht University, Utrecht, Netherlands, (2)Geophysical Fluid Dynamics, Institute of Geophysics, ETH Zurich, Zurich, Switzerland
 
Modeling Proposed Deep Slab-Deformation Processes Behind Potential Precursory Signals Preceding Large Subduction Zone Earthquakes Using Finite Elements (1186294)
Curtis William Baden, University of California Berkeley, Berkeley, United States, Lei Wang, Ohio State University Main Campus, Department of Civil, Environmental and Geodetic Engineering, Columbus, United States, Kristel Chanard, Institut de Physique du Globe de Paris, Paris, France and Roland Burgmann, Department of Earth and Planetary Science, University of California Berkeley, Berkeley, United States
 
Tectonic Significance of a Major Detachment Zone at the Crust-Mantle Boundary of an Ophiolite: Cima di Gratera, Corsica (1187124)
Eric C. Ferre, University of Louisiana at Lafayette, Lafayette, LA, United States, John W Geissman, University of Texas at Dallas, Department of Geosciences, Richardson, TX, United States and Haley Magliari, University of Louisiana at Lafayette, Lafayette, United States
 
Re-examining the Prospects for Frictional Locking and Seismic Slip of the Cascadia Shallow Megathrust and Accretionary Wedge Faults (1187315)
Harold J Tobin, University of Washington Seattle, Department of Earth and Space Sciences, Seattle, WA, United States
 
Rapid postseismic uplift along the Pacific coast of northeastern Japan after the 2011 Tohoku-oki earthquake and forecasting pre-event relative sea-level recovery (1188345)
Sambuddha Dhar1, Jun Muto2, Yoshiaki Ito3, Satoshi Miura3, James Daniel Paul Moore4, Yusaku Ohta5 and Takeshi Iinuma6, (1)Tohoku University, Earth Sciences, Sendai, Japan, (2)Tohoku University, Earth Science, Sendai, Japan, (3)Tohoku University, Geophysics, Sendai, Japan, (4)University of Oxford, Oxford, United Kingdom, (5)Tohoku University, Graduate School of Science, Sendai, Japan, (6)International Research Institute of Disaster Science, Sendai, Japan
 
Static stress changes in magmatic pathways induced by subduction zone earthquakes: A parametric study on the influence of material heterogeneities and fault geometry (1192836)
Luis IVAN Bazan Flores and Christodoulos Kyriakopoulos, University of Memphis, Center for Earthquake Research and Information, Memphis, United States
 
Horizontal deformation rates near the Cascadia subduction zone trench revealed by offshore GNSS-Acoustic time series (1193941)
John Boone DeSanto, University of Washington, Department of Earth and Space Sciences, Seattle, United States, David A Schmidt, University of Washington, Department of Earth and Space Sciences, Seattle, WA, United States, C David Chadwell, University of California San Diego, La Jolla, CA, United States, Mark A Zumberge, Univ California San Diego, La Jolla, United States and Glenn S Sasagawa, Univ California San Diego, La Jolla, CA, United States
 
Sizing up the subduction beast: Forearc uplift studies in Costa Rica and New Zealand (1194287)
Jeffrey S Marshall, California State Polytechnic University Pomona, Geological Sciences, Pomona, CA, United States
 
Asperity erosion behavior in the Northern Japan Trench in the decade prior to the M9 Tohoku Earthquake (1195322)
Eric Burton, Indiana University, Bloomington, United States and Kaj M Johnson, Indiana University, Bloomington, IN, United States
 
Hidden Roughness of Subducting Seafloor at Northern Manila Trench and Implications for Megathrust Seismogenesis (1197464)
Huiwen Tan1, Xiang Gao1, Kelin Wang2, Jinwei Gao3 and Jiangheng He2, (1)Institute of Oceanology, Chinese Academy of Sciences, Key Laboratory of Marine Geology and Environment, Qingdao, China, (2)Pacific Geoscience Centre, Geological Survey of Canada, Sidney, BC, Canada, (3)Institute of Deep-sea Science and Engineering, Chinese Academy of Sciences, Sanya, China
 
Imaging the Subducted Continental Edge and Massive Subduction Channel of the Taiwan Arc-Continent Collision from Multiscale Data Integration (1197971)
Yu-Huan Hsieh1, John Suppe1, Char-Shine Liu2, Hsin-Hua Huang3 and Sara Carena4, (1)Department of Earth and Atmospheric Sciences, University of Houston, Houston, United States, (2)National Taiwan University, Ocean Center, Taipei, Taiwan, (3)Academia Sinica, Institute of Earth Sciences, Taipei, Taiwan, (4)Ludwig-Maximilians University, Earth and Environmental Sciences, Munich, Germany
 
Ultra-far-field postseismic deformation by rheological structures in mantle wedge: Insight from 2D numerical model with various constitutive relation laws (1199214)
Hyeon Seob Kim, Kangwon National University, Geophysics, Chuncheon, Korea, Republic of (South) and Byung-Dal So, Kangwon National University, Geophysics, Chuncheon, Gangwon-do, South Korea
 
Fault reactivation in the Ecuadorian forearc as an indicator of change in subduction regime of the northwestern South American subduction zone (1199748)
Rafael V Almeida, San Diego State University, Department of Geological Sciences, San Diego, CA, United States, Yaniel Vazquez, Yachay Tech University, Earth and Environmental Sciences, Imbabura, Ecuador and Emilio Carrillo, Instituto Colombiano de Geología y Minería, Bogotá, Colombia
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