S031
Resolving the Complexity of Earthquake Processes
Session ID#: 72843
Session Description:
Our collective understanding of earthquake processes has seen great progress through combined modeling efforts across multiple temporal and spatial scales, the inclusion of diverse datasets, and the comparison of modeling results with numerical and laboratory experiments. However, our interpretations of earthquake source processes remain limited due to the remote nature of observations, our incomplete knowledge of the Earth's interior, and potential modeling uncertainties or biases imposed by our prior assumptions.
This session invites contributions aimed at studying earthquake processes through both kinematic source imaging and numerical modeling approaches. We welcome studies focused on the spatio-temporal complexity of on-fault processes and the relative impact of fault geometry, roughness, fluids and bulk heterogeneity, within the context of individual ruptures as well as earthquake sequences. We solicit contributions exploring the implications of modeling uncertainties and resolution limitations in our interpretation of earthquake rupture complexity, within the scope of numerical, laboratory and observational studies.
Index Terms:
7209 Earthquake dynamics [SEISMOLOGY]
7215 Earthquake source observations [SEISMOLOGY]
7230 Seismicity and tectonics [SEISMOLOGY]
7260 Theory [SEISMOLOGY]
Primary Convener: Théa Ragon, Université Côte d’Azur, CNRS, OCA, IRD, Géoazur, Valbonne, France
Conveners: Ryo Okuwaki, University of Tsukuba, Tsukuba, Japan, Wenyuan Fan, Florida State University, Tallahassee, FL, United States and Harsha S. Bhat, Ecole Normale Supérieure Paris, Département de Géosciences, Paris, France
Primary Liaison: Théa Ragon, Université Côte d’Azur, CNRS, OCA, IRD, Géoazur, Valbonne, France
Rough Subducting Seafloor Reduces Interseismic Coupling and Mega‐Earthquake Occurrence: Insights From Analogue Models (Invited) (486523)
Elenora van Rijsingen, Ecole Normale Supérieure, Department of Geosciences, Paris, France, Francesca Funiciello, Università Roma Tre, Dip. Scienze, Rome, Italy, Fabio Corbi, Deutsches GeoForschungsZentrum GFZ, Potsdam, Germany; Università Roma Tre, Dip. Scienze, Roma, Italy and Serge Lallemand, Univ Montpellier 2, Montpellier, France
Combining Back-Projection and Neural Networks to Image Earthquake Rupture Complexity (Invited) (487509)
Marina Corradini1, Ian W. McBrearty2, Daniel T Trugman2, Claudio Satriano1, Paul A Johnson2 and Pascal Bernard1, (1)Institut de Physique du Globe de Paris, Paris, France, (2)Los Alamos National Laboratory, Earth and Environmental Sciences: Geophysics (EES-17), Los Alamos, NM, United States
Directivity Modes of Earthquake Populations with Unsupervised Learning (488904)
Zachary E. Ross1, Daniel T Trugman2, Kamyar Azizzadenesheli1 and Anima Anandkumar1, (1)California Institute of Technology, Pasadena, CA, United States, (2)Los Alamos National Laboratory, Earth and Environmental Sciences: Geophysics (EES-17), Los Alamos, NM, United States
Contribution of dynamics of cascading to the earthquake statistics: Dependency of b-value on fault properties and stress in the multiscale circular patch model (492673)
Kansuke Uemura, University of Tokyo, Bunkyo-ku, Japan, Satoshi Ide, The University of Tokyo, Bunkyo-ku, Japan and Hideo Aochi, BRGM, DRP, Orléans, France
Using a Large-N Seismic Array to Explore Source Properties of Injection-Induced Earthquakes in Northern Oklahoma (495891)
Elizabeth S Cochran, U.S. Geological Survey, Earthquake Science Center, Pasadena, CA, United States, Kilian B Kemna, Ruhr University Bochum, Institute of Geology, Mineralogy and Geophysics, Bochum, Germany, Rebecca M Harrington, Ruhr-Universitat Bochum, Bochum, Germany and Alexander Wickham-Piotrowski, ENSEGID, Bordeaux, France
The 2018 Mw6.8 Zakynthos (Ionian Sea, Greece) Earthquake: Seismic Source and Local Tsunami Characterization (505613)
Fabrizio Romano1, Antonella Cirella1, Antonio Avallone1, Alessio Piatanesi1, Pierre Briole2, Athanassios Ganas3, Nikolaos Theodoulidis4, Konstantinos Chousianitis3, Manuela Volpe1, George Bozionelos5, Giulio Selvaggi1 and Stefano Lorito6, (1)Istituto Nazionale di Geofisica e Vulcanologia, Roma, Italy, (2)Ecole Normale Supérieure Paris, Laboratoire de Géologie, Paris, France, (3)National Observatory of Athens, Athens, Greece, (4)ITSAK, Thessaloniki, Greece, (5)University of Athens, Department of Geology and Geoenvironment, Athens, Greece, (6)Istituto Nazionale di Geofisica e Vulcanologia, Palermo, Italy
Finite Fault Inversion of the 2017 MW 5.5 Pohang Earthquake Using an Empirical Green’s Function Method (514502)
Eunbyeol Cho1, Jeong-Ung Woo2, Junkee Rhie2 and Sungho Lee2, (1)Seoul National University, School of Earth and Environmental Sciences, Seoul, Korea, Republic of (South), (2)Seoul National University, School of Earth and Environmental Sciences, Seoul, South Korea
Variability in Synthetic Earthquake Ground Motions Caused by Source Variability and Errors in Wave Propagation Models (515574)
Antonella Cirella, Istituto Nazionale di Geofisica e Vulcanologia, Roma, Italy, Paul Spudich, US Geological Survey, Menlo Park, CA, United States, Laura Scognamiglio, Istituto Nazionale di Geofisica e Vulcanologia, Rome, Italy and Elisa Tinti, Istituto Nazionale di Geofisica e Vulcanologia, Palermo, Italy
Fault geometry and rupture patterns of the 2018 Lombok earthquakes – complex thrust faulting in a volcanic back-arc setting (532149)
Karen Lythgoe, Earth Observatory of Singapore, Singapore, Singapore, Muzli Muzli, Earth Observatory of Singapore, Nanyang Technological University, Singapore, Singapore, Andri D Nugraha, Institut Teknologi Bandung, Global Geophysics Research Group, Bandung, Indonesia, Shengji Wei, Nanyang Technological University, Earth Observatory of Singapore, Singapore, Singapore, Ping Tong, University of Toronto, Toronto, ON, Canada and Zulfakriza Zulfakriza, Institut Teknologi Bandung, Bandung, Indonesia
Seismicity TREMOL simulations based on single asperity ruptures at the Mexican subduction SUB3 region (539571)
Otilio Jose Rojas1, Marisol Monterrubio-Velasco2, Armando Aguilar1,3, Ramon Zuñiga-Davila4 and Josep de la Puente1, (1)Barcelona Supercomputing Center, Barcelona, Spain, (2)Barcelona Supercomputing Center, Computational Applications to Science and Engineering, Barcelona, Spain, (3)Universidad Veracruzana, Facultad de Ingeniería Civil, Poza Rica, Mexico, (4)National Autonomous University of Mexico, Queretaro, Mexico
Introducing Surface Topography Effects and the 3D Velocity Structure to Refine the Kinematic Source Inversion Models. Application to the Norcia, Mw 6.5, 30 October 2016, Central Italy Earthquake. (541149)
Emanuele Casarotti1, Elisa Tinti2, Laura Scognamiglio3 and Federica Magnoni1, (1)Istituto Nazionale di Geofisica e Vulcanologia, Roma, Italy, (2)Istituto Nazionale di Geofisica e Vulcanologia, Palermo, Italy, (3)Istituto Nazionale di Geofisica e Vulcanologia, Rome, Italy
The dynamics of laboratory thrust earthquakes near the free surface (549925)
Yuval Tal1, Vito Rubino2, Ares Rosakis2 and Nadia Lapusta3,4, (1)Ben-Gurion University of the Negev, Geological and Environmental Sciences, Beer Sheva, Israel, (2)California Institute of Technology, Graduate Aerospace Laboratories, Pasadena, CA, United States, (3)California Institute of Technology, Pasadena, CA, United States, (4)Division of Geological and Planetary Sciences and Division of Engineering and Applied Science, California Institute of Technology, Pasadena, CA, United States
Rupture model of the March 16 2014 Mw 6.7 earthquake: a large foreshock of the Mw 8.2 Pisagua mainshock (560432)
Javier A Ruiz1, Andrei Maksymowicz1, Francisco H Ortega Culaciati1, Luis A Rivera2 and Diana Comte3, (1)University of Chile, FCFM - Department of Geophysics, Santiago, Chile, (2)Université de Strasbourg-CNRS, Institut de Physique du Globe de Strasbourg, UMR-7516, Strasbourg, France, (3)University of Chile, Santiago, Chile
Dynamics of slip pulses along heterogeneously stressed faults (574619)
Hiroyuki Noda, Disaster Prevention Research Institute, Kyoto University, Kyoto, Japan, Nicolas Brantut, University College London, London, United Kingdom and Dmitry Garagash, Dalhousie University, Department of Civil and Resource Engineering, Halifax, NS, Canada
Are multi-fault rupture and fault roughness compatible? Dynamic rupture modeling of the 2016 Mw7.8 Kaikōura, New Zealand, rupture cascade with geometric fault complexity across scales (579543)
Thomas Ulrich, Ludwig Maximilians University of Munich, Munich, Germany, Alice-Agnes Gabriel, Ludwig-Maximilians-Universität, Munich, Germany and Carsten Uphoff, Technical University of Munich (TUM), Munich, Germany
Mw 7.8 Wharton Basin blind strike-slip earthquake of 2 March 2016:Fault plane identification and spatiotemporal rupture history constrained by waveform modeling and tsunami simulation (585266)
Xu Zhao, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China, ZhenXing Yao, Institute of Geology and Geophysics CAS, Beijing, China and Peitao Wang, National Marine Environment Forecasting Center, Beijing, China
Back-projection Analysis of Synthetic Earthquakes: Effects of Rupture Heterogeneity, Dynamic Rupture Process, and Array Configuration (606813)
Baoning Wu1, Bo LI2, Abhijit Ghosh3 and David Douglas Oglesby3, (1)University of California Riverside, Riverside, CA, United States, (2)Ludwig Maximilians University of Munich, Munich, Germany, (3)University of California Riverside, Department of Earth and Planetary Sciences, Riverside, CA, United States
Characterizing Earthquake Source Complexity in the San Jacinto Fault Zone: Implications for Calculation of Source Parameters (607832)
Qimin Wu1, Xiaowei Chen1 and Rachel E Abercrombie2, (1)University of Oklahoma Norman Campus, School of Geosciences, Norman, OK, United States, (2)Boston University, Boston, MA, United States
Peak and Average Slips: Combined Constraints on Source Parameters, Fault Mechanics and Recurrence-Times (634643)
Robert M Nadeau1, Taka'aki Taira2 and Douglas Scott Dreger1, (1)University of California Berkeley, Berkeley, CA, United States, (2)Univ California Berkeley, Berkeley, CA, United States
