T41C:
Multiscale Processes Influencing Tectonics and Earthquakes at Plate Boundary Fault Systems I


Submit an Abstract to this Session


Session ID#: 60291

Session Description:
New insights into the underlying physics of plate boundary systems have significantly influenced probabilistic hazard seismic hazard models in active tectonic regions. Here, we aim to improve our understanding of plate boundaries from the Earth’s surface through the lithosphere and their relevance to natural hazards and society. Understanding linkages between shallow, deep, and fault zone tectonic processes is critical; for example, complexities in crustal materials and fault zones can control rupture propagation direction and rupture across segment boundaries that may cascade into larger events. This session highlights the underlying physics and spatio-temporal patterns of plate boundary systems from observational data and modeling ranging in scale from shallow fault zones to plate boundaries. The session focuses on multiscale data integration, including geophysical studies of seismicity, source inversions, geodetics, structural models, and numerical modeling, as well as geologic studies of surface processes, geochemical and laboratory analyses, and paleoseismic observations.
Primary Convener:  Maureen A L Walton, U.S. Geological Survey, Santa Cruz, United States
Conveners:  Yehuda Ben-Zion, University of Southern California, Department of Earth Sciences, Los Angeles, CA, United States, Estelle Chaussard, FM, Research Division, Norwood, United States and Andrea Donnellan, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, United States
Primary Liaison:  Maureen A L Walton, U.S. Geological Survey, Santa Cruz, United States
Chairs:  Maureen A L Walton, US Naval Research Laboratory, Ocean Sciences Divison, Washington, DC, United States and Yehuda Ben-Zion, University of Southern California, Department of Earth Sciences, Los Angeles, CA, United States
OSPA Liaison:  Maureen A L Walton, US Naval Research Laboratory, Ocean Sciences Divison, Washington, DC, United States

Cross-Listed:
  • G - Geodesy
  • NG - Nonlinear Geophysics
  • NH - Natural Hazards
  • S - Seismology
Index Terms:

1209 Tectonic deformation [GEODESY AND GRAVITY]
4430 Complex systems [NONLINEAR GEOPHYSICS]
8150 Plate boundary: general [TECTONOPHYSICS]
8158 Plate motions: present and recent [TECTONOPHYSICS]

Abstracts Submitted to this Session:

How do the continents deform? (Invited) (344065)
Tim J Wright, University of Leeds, COMET, School of Earth and Environment, Leeds, LS2, United Kingdom
Breaking a Subduction-Termination from Top to Bottom: The Large 2016 Kaikōura Earthquake (389057)
Vasiliki Mouslopoulou1,2, Vasso Saltogianni1, Andy Nicol Prof3, Onno Oncken1, John Begg4, Andrey Y. Babeyko1, Simone Cesca5 and Marcos Moreno1, (1)Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences, Potsdam, Germany, (2)National Observatory of Athens, Institute of Geodynamics, Athens, Greece, (3)University of Canterbury, Geohazards & Tectonics, Christchurch, New Zealand, (4)GNS Science, Lower Hutt, New Zealand, (5)Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences, Physics of Earthquakes and Volcanoes, Potsdam, Germany
Crustal structure of the Nankai subduction zone revealed by two decades of onshore-offshore and ocean-bottom seismometer data (Invited) (424797)
Dan Bassett1, Adrien F Arnulf2, Alistair J Harding3, Shuichi Kodaira4 and Ayako Nakanishi4, (1)Earth Sciences New Zealand, Lower Hutt, New Zealand, (2)Scripps Institution of Oceanography, La Jolla, United States, (3)Scripps Institution of Oceanog, La Jolla, United States, (4)JAMSTEC Japan Agency for Marine-Earth Science and Technology, Yokohama, Japan
Afterslip and Viscoelastic Processes and Their Relation with Seismic Activity: An Example from the Study of the Mw 7.2 El Mayor-Cucapah Earthquake (Mexico) (Invited) (414422)
Adriano Gualandi, National Institute of Geophysics and Volcanology, Rome, Italy, Zhen Liu, NASA Jet Propulsion Laboratory, Pasadena, United States and Chris Rollins, GNS Science, Earthquake Physics and Statistics, Lower Hutt, New Zealand
Combining paleoseismic and geodetic data to study the characteristics of an auxiliary plate boundary fault within the California Borderlands: Earthquake history and preliminary slip rate for the southern section of the Newport-Inglewood-Rose Canyon fault system (438771)
Drake M Singleton1,2, Thomas K Rockwell3, Jillian M Maloney4 and Duncan Carr Agnew2, (1)San Diego State University, Department of Geological Sciences, San Diego, United States, (2)University of California San Diego, La Jolla, CA, United States, (3)San Diego State University, Department of Geological Sciences, San Diego, CA, United States, (4)San Diego State University, Geological Sciences, San Diego, CA, United States
Geometric complexity of earthquake rupture surfaces preserved in pseudotachylyte networks (Invited) (345513)
Christie D Rowe1, Catherine Ross2, Mark Swanson3, Stephen G Pollock3 and McGill University 2014 Crustal Rheology Class4, (1)University of Nevada Reno, Nevada Seismological Laboratory, Reno, United States, (2)McGill University, Department of Earth and Planetary Sciences, Montreal, QC, Canada, (3)University of Southern Maine, Gorham, ME, United States, (4)McGill University, Earth and Planetary Sciences, Montreal, QC, Canada
Tectonic Damage Zones: How Large Across Faults? Insight From Empirical Scaling Relations in Granite Dells Fault Zone, Arizona, USA (405771)
Isabelle Manighetti1, Frédérique Leclerc2, Laure Serreau3, Lionel Mattéo1, Chelsea Scott4, Tyler Scott5, Stéphane Dominguez6, Ramon Arrowsmith4, Jacques Malavieille6 and Christopher J Crosby7, (1)Géoazur-Université Côte d'Azur, Valbonne, France, (2)Géoazur, Université Côte d’Azur/OCA/CNRS/IRD, Valbonne, France, (3)Géoazur-Université Côte d'Azur, Nice, France, (4)Arizona State University, School of Earth and Space Exploration, Tempe, United States, (5)Arizona State University, Tempe, AZ, United States, (6)Geoscience Montpellier, Montpellier, France, (7)UNAVCO, Inc., Boulder, United States

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