T026
Integrating Plate Interface Rheology and Seismicity with Subduction Zone Geodynamics
Session ID#: 81197
Session Description:
The rheological and frictional properties of the plate interface determine the degree of interseismic locking, seismic rupture size and the geodynamic coupling that influences long-term crustal deformation and possibly plate velocities. In turn, the interface rheology is influenced by petrology, stress state, temperature, fluid pressure and sediment thickness, which are all controlled by the broader geodynamics. A holistic understanding requires integrated studies of spatial scales ranging from fault/shear zones to tectonic plates and temporal scales from seconds to million-years. We welcome contributions from all relevant disciplines that use observations or models to explore the relationships between fault/shear zone rheology, megathrust seismicity and broad-scale geodynamics.
Index Terms:
8123 Dynamics: seismotectonics [TECTONOPHYSICS]
8163 Rheology and friction of fault zones [TECTONOPHYSICS]
8170 Subduction zone processes [TECTONOPHYSICS]
Primary Convener: Adam Beall, Cardiff University, School of Earth and Ocean Sciences, Cardiff, CF24, United Kingdom
Conveners: Whitney M Behr, ETH Swiss Federal Institute of Technology Zurich, Department of Earth Sciences, Zurich, Switzerland, Luca Dal Zilio, California Institute of Technology, Pasadena, United States and YaJing Liu, McGill University, Earth and Planetary Sciences, Montreal, QC, Canada
Primary Liaison: Adam Beall, Cardiff University, School of Earth and Ocean Sciences, Cardiff, CF24, United Kingdom
The strength inversion origin of non-volcanic tremor: observations and models (Invited) (511746)
Paola Vannucchi1, Alexander Peter Clarke1, Albert de Montserrat Navarro2, Audrey Ougier-Simonin3, Luca Aldega4 and Jason Phipps Morgan5, (1)Royal Holloway University of London, Egham, TW20, United Kingdom, (2)University of Padova, Padova, Italy, (3)British Geological Survey Keyworth, Nottinghamshire, NG12, United Kingdom, (4)University of Rome "La Sapienza", Roma, Italy, (5)Royal Holloway University of London, Egham, United Kingdom
Subduction shear zone morphology and exhumation dynamics: Insights from peak Pressure-Temperature conditions and timing of subduction on Syros Island, Greece (528895)
Alissa Jeanne Kotowski, University of Texas at Austin, Austin, TX, United States, Whitney M Behr, University of Texas at Austin, Department of Geological Sciences, Austin, TX, United States, Kyle T Ashley, Virginia Polytechnic Institute, Blacksburg, VA, United States, Daniel F Stockli, University of Texas, Austin, TX, United States, Konstantinos I Soukis, National and Kapodistrian University of Athens, Geology and Geoenviroment, Athens, Greece and Miguel Cisneros, University of Texas at Austin, Geological Sciences, Austin, TX, United States
Rheology of the fluid oversaturated quartz shear zone at the brittle-ductile transition (532778)
Keishi Okazaki, Kochi/JAMSTEC, Nankoku, Japan, Eric Burdette, Brown University, Providence, RI, United States and Greg Hirth, Brown Univeristy, Department of Earth, Environmental, and Planetary Sciences, Providence, RI, United States
Megathrust Seismotectonics of the Southeast Asian Convergent Margin: Insights from Three-Dimensional Spherical Geodynamic Modelling (569627)
Thyagarajulu Gollapalli1,2, Fabio A Capitanio1, Radhakrishna Munukutla3, Julian Giordani4, Mohd Zuhair1 and Juan Carlos Graciosa1, (1)Monash University, School of Earth, Atmosphere and Environment, Melbourne, VIC, Australia, (2)IITB-Monash Research Academy, Powai, India, (3)Indian Institute of Technology Bombay, Department of Earth Sciences, Mumbai, India, (4)University of Melbourne, Parkville, Australia
Imaging the Plate Boundary of the Subducted Gorda Slab with Converted Phases and Guided Waves (580385)
Jianhua Gong, Woods Hole Oceanographic Institution, Woods Hole, MA, United States, Hao Guo, USTC University of Science and Technology of China, Hefei, China and Jeffrey Joseph McGuire, US Geological Survey, Menlo Park, CA, United States
The influence of subduction zone geodynamics on interface stress state (581168)
Adam Beall, Cardiff University, School of Earth and Ocean Sciences, Cardiff, CF24, United Kingdom, Ake Fagereng, Cardiff University, Earth and Ocean Sciences, Cardiff, CF24, United Kingdom, Huw Davies, Cardiff University, Earth and Ocean Sciences, Cardiff, United Kingdom and Fanny Garel, Université de Montpellier, Géosciences Montpellier, Montpellier Cedex 05, France
Tectonics and Seismicity in the Northern Apennines Driven by Slab Retreat and Crustal Delamination (607934)
Ylona van Dinther1, Mario D'Acquisto1, Luca Dal Zilio2,3, Eduard H Kissling4, Irene Molinari5 and Taras Gerya2, (1)Utrecht University, Earth Sciences, Utrecht, Netherlands, (2)ETH Swiss Federal Institute of Technology Zurich, Zurich, Switzerland, (3)California Institute of Technology, Pasadena, United States, (4)Institute of Geophysics, Zurich, Switzerland, (5)INGV, Roma, Italy
