T053
Geophysical, Mechanical, and Geologic Constraints on the Subduction Interface III Posters

Wednesday, 16 December 2020: 04:00-20:59
Poster
Primary Convener:  Helen A Janiszewski, University of Hawaii at Manoa, Earth Sciences, Honolulu, HI, United States
Conveners:  Cailey Brown Condit, University of Washington, Seattle, WA, United States, Noel M Bartlow, University of California Berkeley, Berkeley, CA, United States and Melodie E French, Rice University, Houston, TX, United States
Primary Liaison:  Helen A Janiszewski, University of Hawaii at Manoa, Earth Sciences, Honolulu, HI, United States
Chairs:  Cailey Brown Condit, University of Washington, Seattle, WA, United States, Noel M Bartlow, University of Missouri, Columbia, MO, United States and Melodie E French, Rice University, Houston, TX, United States
OSPA Liaison:  Cailey Brown Condit, University of Washington, Seattle, WA, United States
 
Pore Pressure Profile within Hole C0024A, at the Toe of the Nankai Accretionary Prism, using Borehole Geophysical and Core Petrophysical Data from Expedition IODP 358 (NanTroSEIZE Stage 4) (674505)
Joshua Pwavodi, University Grenoble Alpes, France and Mai-Linh Doan, Université Grenoble Alpes, ISTerre, Grenoble, France
 
Attenuation-based tomography of the 2015 Illapel, Chile earthquake rupture region (677580)
Brian Kelly, University of Florida, Department of Geological Sciences, Ft Walton Beach, FL, United States, Raymond M Russo, University of Florida, Geological Sciences, Ft Walton Beach, FL, United States, Steven W Roecker, Rensselaer Polytechnic Inst, Earth & Environmental Sciences, Troy, NY, United States and Diana Comte, University of Chile, Santiago, Chile
 
Seismic signature of a fossil subduction interface shear zone in the Condrey Mountain Schist, northern California (679509)
Carolyn M Tewksbury-Christle, ETH Swiss Federal Institute of Technology Zurich, Department of Earth Sciences, Zurich, Switzerland and Whitney M Behr, Structural Geology and Tectonics Group, Geological institute, ETH Zurich, Zurich, Switzerland
 
Diffuse vs Localized Deformation in Smectite-Rich Scaly Clays: What can we Learn From the Study of an Ancient Shallow Accretionary Prism? (679723)
Francesca Remitti1, Silvia Mittempergher1, Rossella Arletti1, Michelangelo Polisi1, Stefano Aretusini2, Telemaco Tesei3, Andrea Festa4, Elisa Telani1 and Nicole Violi1, (1)University of Modena and Reggio Emilia, Department of Chemical and Geological Sciences, Modena, Italy, (2)INGV (Istituto Nazionale di Geofisica e Vulcanologia), Roma, Italy, (3)University of Padua, Padua, Italy, (4)University of Torino, Department of Earth Sciences, Torino, Italy
 
A fresh look at the tectonic structure of the Eastern Java margin using improved seismic reflection tomography (680537)
Yueyang Xia1, Dirk Klaeschen2, Jacob Geersen1, Heidrun Kopp1, Michael Schnabel3 and Michael Riedel1, (1)GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany, (2)GEOMAR Helmholtz Centre for Ocean Research, Kiel, Germany, (3)BGR Federal Institute for Geosciences and Natural Resources, Hannover, Germany
 
Microphysical controls on the elastic wave speeds of an exhumed greenschist and implications for the interpretation of conditions along the subduction interface. (688711)
Celine Fliedner and Melodie E French, Rice University, Houston, TX, United States
 
The rheology and mechanical anisotropy of a foliated blueschist (690045)
Leif Tokle, ETH Zurich, Zürich, State (optional), Switzerland, Lonnie Justin Hufford, ETH Zurich, Zurich, Switzerland and Whitney M Behr, Structural Geology and Tectonics Group, Geological institute, ETH Zurich, Zürich, Switzerland
 
Experimental Investigation of Glaucophane Rheology through Shear and Axial Compression Griggs Apparatus Experiments on Hot-Pressed Aggregates (690085)
Lonnie Justin Hufford, ETH Zurich, Zurich, Switzerland, Leif Tokle, ETH Zurich, Zürich, State (optional), Switzerland and Whitney M Behr, Structural Geology and Tectonics Group, Geological institute, ETH Zurich, Zurich, Switzerland
 
Slip partitioning and fluid pressure in a heterogeneous plate interface at seismogenic depths: an example from the Gwna Complex, Anglesey, UK (697053)
Harold Robert Leah and Ake Fagereng, Cardiff University, Cardiff, CF24, United Kingdom
 
Marine forearc structure at the seismogenic up-dip end of the 2014 Iquique Mw 8.1 earthquake (697301)
Florian Petersen1, Dietrich Lange1, Bo MA1, Jacob Geersen1, Ingo Grevemeyer1, Heidrun Kopp1,2, Dirk Klaeschen1, Eduardo Contreras Reyes3, Sergio E Barrientos4, Anne M Trehu5 and PICTURES working group, (1)GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany, (2)University of Kiel, Kiel, Germany, (3)Universidad de Chile, Department of Geophysics, Santiago, Chile, (4)Univ de Chile, Santiago, Chile, (5)Oregon State University, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, OR, United States
 
Consolidation behavior, permeability, and compressional wavespeeds of sediment entering the eastern Aleutian subduction zone: Implications for rock properties along the plate interface (703940)
Peter Miller, University of Texas at Austin, Austin, PA, United States, Parisa Shokouhi, Pennsylvania State University, Engineering Science and Mechanics, University Park, PA, United States and Demian M Saffer, Pennsylvania State University, University Park, PA, United States
 
Full waveform inversion of OBS data of a 350 km long profile in the Pisagua/Iquique earthquake region (747895)
Laura Gassner1, Andreas Rietbrock1, Kathy K Davenport2, Anne M Trehu2 and PICTURES working group, (1)Karlsruhe Institute of Technology, Karlsruhe, Germany, (2)Oregon State University, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, OR, United States
 
Application of Automated Onset Estimation to the PICTURES Active Seismic Experiment: Preliminary Results (704784)
Valentina Reyes-Wagner1, Diana Comte1, Daniela Teresa Calle Gardella1, Steven W Roecker2 and Andreas Rietbrock3, (1)AMTC-FCFM Universidad de Chile, Santiago, Chile, (2)Rensselaer Polytechnic Inst, Earth & Environmental Sciences, Troy, NY, United States, (3)Karlsruhe Institute of Technology, Karlsruhe, Germany
 
Variations in plate interface reflectivity within the rupture zone of the 2014 Iquique earthquake sequence: evidence from seismic and bathymetric data (680334)
Bo MA, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany, Dirk Klaeschen, GEOMAR Helmholtz Centre for Ocean Research, Kiel, Germany, Heidrun Kopp, GEOMAR, Kiel, Germany, Jacob Geersen, Ocean and Earth Science, National Oceanography Centre Southampton, Southampton, United Kingdom, Anne M Trehu, Oregon State University, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, OR, United States and PICTURES Working group
 
Depth dependent spatial variation of pore size and permeability for sediments at the Nankai accretionary prism (713304)
Wataru Tanikawa1, Kouki Inoue2, Yoshitaka Hashimoto2, Osamu Tadai3, Manami Kitamura4, Yohei Hamada5, Takehiro Hirose5 and Weiren Lin6, (1)JAMSTEC Japan Agency for Marine-Earth Science and Technology, Kanagawa, Japan, (2)Kochi University, Kochi, Japan, (3)Marine Works Japan Ltd., Nankoku, Japan, (4)AIST - National Institute of Advanced Industrial Science and Technology, Tsukuba, Japan, (5)JAMSTEC, Kochi Institute for Core Sample Research, Nankoku, Japan, (6)Kyoto University, Kyoto, Japan
 
Evidence for Deep Uneclogitized Subducted Crust Under Alaska (722713)
Florian Millet, LGLTPE, Univ. Lyon 1, ENS Lyon and CNRS, Villeurbanne Cedex, France, Stephane Rondenay, University of Bergen, Bergen, Norway, Thomas Bodin, LGLTPE, Univ. Lyon 1, ENS Lyon and CNRS, Lyon, France and Carl Tape, University of Alaska Fairbanks, Geophysical Institute, Fairbanks, AK, United States
 
Blueschist facies deformation mechanisms, rheology, and fault slip styles: preliminary observations on an exhumed subduction complex (Ishigaki-jima, SW Japan) (727105)
Sara De Caroli1, Ake Fagereng1, Kohtaro Ujiie2 and Francesca Meneghini3, (1)Cardiff University, School of Earth and Ocean Sciences, Cardiff, CF24, United Kingdom, (2)University of Tsukuba, Tsukuba, Japan, (3)University of Pisa, Pisa, Italy
 
The influence of seismically-induced deform­­ation on the microstructure of quartz in ductile regime (732376)
Hamid Soleymani, CUNY Graduate Center, New York, NY, United States, Steven B Kidder, CUNY City College, New York, NY, United States, Greg Hirth, Brown Univeristy, Department of Earth, Environmental, and Planetary Sciences, Providence, RI, United States and Gordana Garapic, SUNY College at New Paltz, Department of Geology, New Paltz, NY, United States
 
Effects of Subducting Bathymetric Highs on Variations in the Wedge Taper Angles of the Barbados Accretionary Prism. (735519)
Bryan Moore, University of Houston, Earth and Atmospheric Sciences, Houston, TX, United States and Paul Mann, University of Houston, Department of Earth and Atmospheric Sciences, Houston, TX, United States
 
Diffuse vs Localized Deformation in Scaly Clays: insights from experimental reactivation of natural fabrics (753358)
Telemaco Tesei1, Stefano Aretusini2, Silvia Mittempergher3, Nicola Paola4, Rossella Arletti3 and Francesca Remitti5, (1)University of Padua, Padua, Italy, (2)University of Manchester, Manchester, United Kingdom, (3)University of Modena and Reggio Emilia, Department of Chemical and Geological Sciences, Modena, Italy, (4)Durham University, Earth Sciences, Durham, United Kingdom, (5)Univ. di Modena e Reggio E., Modena, Italy
 
The June 2020 Mw 7.4 La Crucecita, March 2012 Mw 7.4 Ometepec and February 2018 Mw 7.2 Pinotepa Earthquakes in Mexico Ruptured Small Patches of the Cocos Megathrust (765490)
Eric Jameson Fielding, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States, Baptiste Gombert, Institut de Physique du Globe de Strasbourg, Strasbourg, France, Alejandro Gonzalez-Ortega, Center for Scientific Research and Higher Education at Ensenada, Ensenada, Mexico, Zacharie Duputel, California Institute of Technology, Pasadena, United States, Cunren Liang, California Institute of Technology, Pasadena, CA, United States, David P Bekaert, JPL/NASA/Caltech, Pasadena, CA, United States, Sergey V Samsonov, Canada Centre for Remote Sensi, Ottawa, ON, Canada, Romain Jolivet, Ecole Normale Supérieure, PSL Research University, CNRS UMR 8538, Laboratoire de Géologie, Paris, France, Jeremy Maurer, Indiana University, Bloomington, IN, United States and Jean-Paul Ampuero, Université Côte d’Azur, CNRS, Observatoire de la Côte d’Azur, IRD, Géoazur, Valbonne, France
 
Rapid fluid infiltration and permeability enhancement during middle–lower crustal fracturing: Evidence from fluid–rock reaction zones, Sør Rondane Mountains, East Antarctica (773827)
Diana Mindaleva, Masaoki Uno, Atsushi Okamoto and Noriyoshi Tsuchiya, Tohoku University, Sendai, Japan
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