T22B:
Bridging Tectonics and Earthquake Cycles III

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Session ID#: 16018

Session Description:
Long-term tectonic processes shape the bulk of conditions under which faults operate and thereby influence earthquake processes on short time scales. In turn, rupture processes locally reduce the strength of the brittle lithosphere and thereby affect long-term processes. Reconciling observations of mechanisms taking place across these different time and spatial scales will improve our understanding of the rheology of the lithosphere-asthenosphere system and may ultimately improve seismic hazard assessment. What are the driving forces and the rheological structure at plate boundaries? What are the relative contributions of rheology (temperature, fluids, chemistry) and geometry in the segmentation of fault ruptures? What are the roles of faulting and off-fault deformation in shaping the landscape and partitioning seismic and aseismic energy dissipation? We seek contributions from across the fields of geology, geodynamics, seismology, and geodesy  involving both modelling and observational studies.
Primary Convener:  Sylvain Barbot, University of Southern California, Department of Earth Sciences, Los Angeles, CA, United States
Conveners:  Ylona van Dinther, Utrecht University, Department of Earth Sciences, Utrecht, Netherlands, Romain Jolivet, Ecole Normale Supérieure, PSL, CNRS UMR 8538, Laboratoire de Géologie, Département de Géosciences, Paris, France and Fabio Corbi, Deutsches GeoForschungsZentrum GFZ, Potsdam, Germany
Chairs:  Sylvain Barbot, University of Southern California, Department of Earth Sciences, Los Angeles, CA, United States and Romain Jolivet, Ecole Normale Supérieure, PSL, CNRS UMR 8538, Laboratoire de Géologie, Département de Géosciences, Paris, France
OSPA Liaison:  Sylvain Barbot, University of Southern California, Department of Earth Sciences, Los Angeles, CA, United States

Cross-Listed:
  • G - Geodesy
  • S - Seismology
Index Terms:

8118 Dynamics and mechanics of faulting [TECTONOPHYSICS]
8120 Dynamics of lithosphere and mantle: general [TECTONOPHYSICS]
8159 Rheology: crust and lithosphere [TECTONOPHYSICS]
8163 Rheology and friction of fault zones [TECTONOPHYSICS]

Abstracts Submitted to this Session:

Modeling geometrically complex faults over many earthquake cycles via neural network acceleration (Invited) (152313)
Phoebe Robinson DeVries, T Ben Thompson and Brendan J. Meade, Harvard University, Cambridge, MA, United States
Plate convergence rate controls earthquake-size distribution of mountain belts (171492)
Luca Dal Zilio, ETH Zürich, Institute of Geophysics, Department of Earth Sciences, Switzerland, 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
The Role of Thermal Processes in Defining the Seismogenic Zone: The Interplay Between Faults and Shear Zones (Invited) (157497)
Valere Lambert, California Institute of Technology, Seismological Laboratory, Pasadena, United States; Earth Observatory of Singapore, Singapore, Singapore and Sylvain Barbot, University of Southern California, Department of Earth Sciences, Los Angeles, CA, United States
InSAR observations of focused interseismic strain along the entire North Anatolian Fault: implications for seismic hazard assessment and the rheology of the lower crust (171950)
Tim J Wright, University of Leeds, COMET, School of Earth and Environment, Leeds, United Kingdom, Ekbal Hussain, British Geological Survey, Nottinghamshire, United Kingdom, Richard J Walters, Durham University, COMET, Department of Earth Sciences, Durham, United Kingdom, David P Bekaert, Jet Propulsion Laboratory, Pasadena, United States and Ryan Lloyd, University of Bristol, Bristol, United Kingdom
A tale of two earthquakes: interactions between the 2007 Mw 8.4 and 2010 Mw 7.8 Mentawai, Sumatra, earthquake ruptures and their afterslip (172391)
Emma Hill, Asian School of the Environment, Nanyang Technological University, Singapore, Singapore, Lujia Feng, Earth Observatory of Singapore, Nanyang Technological University, Singapore, Singapore, Louisa L Tsang, Nanyang Technological University, Asian School of the Environment, Singapore, Singapore and Sylvain Barbot, University of Southern California, Department of Earth Sciences, Los Angeles, CA, United States
Frictional properties of the Longitudinal Valley Fault from kinematic and dynamic modeling of earthquake sequences. (159870)
Marion Y Thomas, University of Oxford, Oxford, United Kingdom, Jean-Philippe Avouac, California Institute of Technology, Seismological Laboratory, Division of Geological and Planetary Sciences, Pasadena, CA, United States and Nadia Lapusta, California Institute of Technology, Department of Mechanical and Civil Engineering, Pasadena, CA, United States
Effects of Elastoplastic Material Properties on Shallow Fault Slip and Surface Displacement Fields (167695)
Johanna M Nevitt1, Benjamin A. Brooks2, Sarah E Minson3, David A Lockner2, Diane E Moore2, Todd L Ericksen1, Ken W Hudnut4, Craig Len Glennie5 and Christopher Madugo6, (1)U.S. Geological Survey, Earthquake Science Center, Moffett Field, United States, (2)U.S. Geological Survey, Earthquake Science Center, Menlo Park, CA, United States, (3)U.S. Geological Survey, Earthquake Science Center, Moffett Field, CA, United States, (4)USGS, Pasadena Field Office, Pasadena, CA, United States, (5)University of Houston, Department of Civil & Environmental Engineering, National Center for Airborne Laser Mapping, Houston, TX, United States, (6)Pacific Gas and Electric Company, Geosciences, San Francisco, CA, United States
A Spectral Expansion Approach for Geodetic Slip Inversion: Implications for the Down-dip Rupture Limits of Oceanic and Continental Megathrust Earthquakes (151226)
Xiaohua Xu, University of Texas, Institute for Geophysics, Austin, United States, Dan Bassett, GNS Science, Lower Hutt, New Zealand and David T Sandwell, University of California San Diego, La Jolla, CA, United States

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