T009
From fault blocks to exaflops: Earthquake slip from grain scale to plate boundaries
Session ID#: 251038
Session Description:
Natural fault zones are structurally complex systems, comprise fractures and faults of millimeters to hundreds of kilometers in length, and may generate aseismic slip and earthquakes over many orders of magnitude. How the elastic strain potential energy is released on a fault or across a fault system during slip is dictated by both on- and off-fault processes operating over a wide range of spatiotemporal scales. Understanding how effectively our current approaches quantify fault loading and strain release requires integrating a variety of approaches from microscopic to regional length scales and over time scales ranging from fractions of seconds during coseismic slip to thousands of years during the seismic cycle. This session solicits a wide range of contributions, including, but not limited to, multiphysics modeling, laboratory experiments, geological, geodetic, and seismological observations of tectonic or induced earthquakes, with work considering the partitioning of energy in diffuse or localized deformation.
Co-Sponsor(s):
Index Terms:
7209 Earthquake dynamics [SEISMOLOGY]
8010 Fractures and faults [STRUCTURAL GEOLOGY]
8034 Rheology and friction of fault zones [STRUCTURAL GEOLOGY]
8164 Stresses: crust and lithosphere [TECTONOPHYSICS]
Primary Convener: Thomas M Mitchell, University College London, Department of Earth Sciences, London, United Kingdom
Conveners: Rebecca M Harrington, Ruhr University Bochum, Institute of Geology, Mineralogy and Geophysics, Bochum, Germany, Elizabeth S Cochran, U.S. Geological Survey, Earthquake Science Center, Pasadena, United States and Alice-Agnes Gabriel, University of California San Diego, Scripps Institution of Oceanography, La Jolla, United States
Understanding the Complexity of Fluid-Induced Microearthquake Ruptures: Insights from High-Resolution Observations and 3D Dynamic Modeling (Invited) (1856142)
Elisa Tinti1, Francesco Mosconi1, Men-Andrin Meier2, Giulio Poggiali1, Mariano Supino3, Valentin Gischig4, Antonio Pio Rinaldi4, Nico Schliwa2, Alice-Agnes Gabriel5, Frédérick Massin4, John F. Clinton4, Luca Scarabello4, Emanuele Casarotti3, Florian Amann6, Domenico Giardini2, Stefan Wiemer4 and Massimo Cocco3, (1)Sapienza University of Rome, Rome, Italy, (2)ETH Zurich, Institute of Geophysics, Zurich, Switzerland, (3)Istituto Nazionale di Geofisica e Vulcanologia, Rome, Italy, (4)ETH Zurich, Swiss Seismological Service, Zurich, Switzerland, (5)University of California San Diego, Scripps Institution of Oceanography, La Jolla, United States, (6)RWTH Aachen University, Engineering Geology and Hydrogeology, Aachen, Germany
Effects of Fault Geometrical Irregularity and Initial Damage on Fracture Energy of Earthquakes (1889069)
Amir Sagy1, Vladimir Lyakhovsky1, Doron Morad2, Yossef H Hatzor3 and Ittai Kurzon1, (1)Geological Survey of Israel, Jerusalem, Israel, (2)University of California Santa Cruz, Earth & Planetary Sciences, Santa Cruz, United States, (3)Ben-Gurion University of the Negev, Department of Earth and Environmental Sciences, Beer Sheva, Israel
Off-Fault Deformation and Seismic Hazard: Insights into Variations Across Southern California's Strike-Slip Faults and Their Implications for Maximum Magnitude (Mmax) (1898850)
Thomas K Rockwell, San Diego State University, Department of Geological Sciences, San Diego, CA, United States, W. Ashley Griffith, The Ohio State University, School of Earth Sciences, Columbus, United States and Thomas M Mitchell, University College London, Department of Earth Sciences, London, United Kingdom
Influence of Hydrothermal Alteration on Coseismic Slip and Fault Zone Properties Within Distributed Fault Zones (1905852)
Zachary Daniel Smith1, Ruyu Yan1, Johanna M Nevitt2, W. Ashley Griffith3, Kathryn Materna4, Roland Bürgmann1 and Francis Waligora1, (1)University of California Berkeley, Earth and Planetary Science, Berkeley, United States, (2)U.S. Geological Survey, Earthquake Science Center, Moffett Field, United States, (3)The Ohio State University, School of Earth Sciences, Columbus, United States, (4)University of Colorado at Boulder, Boulder, United States
Combined Experimental and Numerical Study of Earthquake Rupture Induced by Fluid Injection: Effect of Fault Healing (Invited) (1958069)
Mohamed Abdelmeguid1, Vito Rubino2, Nadia Lapusta3 and Ares Rosakis2, (1)California Institute of Technology, Graduate Aerospace Laboratories, Pasadena, United States, (2)California Institute of Technology, Graduate Aerospace Laboratories, Pasadena, CA, United States, (3)California Institute of Technology, Pasadena, United States
Elastic Contrast, Rupture Directivity, and Damage Asymmetry in an Anisotropic Bimaterial Strike-Slip Fault at Middle Crustal Depths (1980791)
Bo Ra Song1, Won Joon Song1, Scott Johnson1, Christopher C Gerbi1 and Senthil Vel2, (1)University of Maine, School of Earth and Climate Sciences, Orono, United States, (2)University of Maine, Mechanical Engineering, Orono, United States
Stress heterogeneity and seismicity patterns on geometrically complex faults (Invited) (1984579)
Camilla Cattania, Massachusetts Institute of Technology, Department of Earth, Atmospheric, and Planetary Sciences, Cambridge, MA, United States and Yifan Yin, Massachusetts Institute of Technology, Department of Earth, Atmospheric and Planetary Sciences, Cambridge, United States
Stress Accumulation, Fault Slip, and Barrier-Controlled Earthquake Cycles at Gofar Transform Fault (1999891)
Jianhua Gong, Indiana University Bloomington, Bloomington, IN, United States, Wenyuan Fan, Scripps Institution of Oceanography, La Jolla, United States, Jeffrey McGuire, Woods Hole Oceanographic Institution, Geology and Geophysics, Woods Hole, United States, Mark D Behn, Boston College, Earth and Environmental Sciences, Chestnut Hill, United States, Jessica M Warren, University of Delaware, Earth Sciences, Newark, DE, United States, Emily C Roland, Western Washington University, Geology Department and Marine and Coastal Sciences Program, Bellingham, WA, United States, Margaret S Boettcher, University of New Hampshire, Durham, NH, United States, John A Collins, WHOI, Woods Hole, MA, United States and Yajing Liu, McGill University, Department of Earth and Planetary Sciences, Montreal, QC, Canada
