S017
Microseismicity and fault slip: observations, modeling and experiments

Session ID#: 157916

Session Description:
Together seismic and aseismic slip consume the total fault slip budget and the slip mode partition is imprinted in its microseismicity. The spatiotemporal evolution and statistical characteristics of microseismicity can reveal the complex fault zone architecture and multiple physical processes involved in fault slip. However, several processes remain enigmatic.  How do swarms relate to aseismic slip in different tectonic environments? What is the interplay of seismic and aseismic slip along heterogeneous faults? How does this vary over time? Recently, novel microseismicity analysis and advanced monitoring systems have allowed us to resolve high-resolution physical processes of fault slip, fault zone architecture, and material properties.
 
In this session, we welcome submissions of novel microseismicity analysis approaches; interdisciplinary observations of fault structure, fault slip, and microseismicity; short and long-term studies of spatiotemporal changes in fault slip modes and mechanical properties at different tectonic settings; and theoretical developments from numerical modeling and laboratory experiments.
Index Terms:

7215 Earthquake source observations [SEISMOLOGY]
7230 Seismicity and tectonics [SEISMOLOGY]
7294 Seismic instruments and networks [SEISMOLOGY]
8163 Rheology and friction of fault zones [TECTONOPHYSICS]

Primary Convener:  Jianhua Gong, Scripps Institution of Oceanography, La Jolla, CA, United States
Conveners:  Heather R Shaddox, University of California Berkeley, Berkeley, CA, United States, Eric Beauce, Lamont–Doherty Earth Observatory, Columbia University, New York City, United States and Yifang Cheng, University of California Berkeley, Berkeley, United States
 
A Reliable Approach to Detect and Discriminate Low Magnitude Seismic Events: Application to a Stable Continental Region (1045451)
Céline Hourcade1, Mickael J. A. Bonnin1,2, Éric Beucler1,2, Marion Alloncle1, Damien Fligiel2, Antoine Mocquet1 and Clement Perrin1,2, (1)Laboratoire de Planétologie et Géosciences, CNRS UMR-6112, Nantes Université, Pays de la Loire, Nantes, France, (2)Observatoire des sciences de l’Univers Nantes Atlantique (OSUNA), CNRS-3281, Nantes Université, Pays de la Loire, Nantes, France
 
Transient events and their intermittence in the Mexican subduction zone (1053078)
Zaccaria El Yousfi1, Mathilde Radiguet1, Baptiste Rousset2, Allen L Husker3, Ekaterina Kazachkina4 and Vladimir Kostoglodov5, (1)Université Grenoble Alpes, ISTerre, Grenoble, France, (2)University of Strasbourg, ITES, Strasbourg, France, (3)California Institute of Technology, Seismological Laboratory, Pasadena, CA, United States, (4)National Autonomous University of Mexico, Ciudad DE Armería, Mexico, (5)UNAM, Instituto de Geofisica, Mexico City, Mexico
 
Using Machine Learning Techniques to Correct and Impute Polarity Measurements for Focal Mechanism Determination in Northern California (1053703)
Robert Skoumal, U.S. Geological Survey, Earthquake Science Center, Moffett Field, CA, United States, David R Shelly, USGS National Earthquake Information Center, Golden, United States and Jeanne Hardebeck, USGS, Moffett Field, United States
 
Physics based Modeling of Corinth Earthquake Swarms (Invited) (1063698)
Pierre Dublanchet, MINES ParisTech - PSL University, Géophysique, Centre de Géosciences, Paris, France and Louis De Barros, University of Nice-Sophia Antipolis, Nice, France
 
Accuracy of the inversion for the shear-tensile-compressive model (1070343)
Yi Ren1, Li Zhao1 and Vaclav Vavrycuk2, (1)School of Earth and Space Sciences, Peking University, Beijing, China, (2)Institute of Geophysics, Prague, Czech Republic
 
In-situ Vp/Vs ratio reveals fault-zone material variation at the westernmost Gofar transform fault, East Pacific Rise (1076284)
Tianze Liu1, Jianhua Gong2, Wenyuan Fan2 and Guoqing Lin3, (1)University of California San Diego, La Jolla, United States, (2)Scripps Institution of Oceanography, La Jolla, CA, United States, (3)Department of Marine Geosciences, Rosenstiel School of Marine and Atmospheric Science, University of Miami, Miami, FL, United States
 
Relocation of 2002-2009 Seismicity Above the Socorro Magma Body, Central New Mexico, USA (1076382)
Jessica Aerts, New Mexico Institute of Mining and Technology, Earth and Environmental Science, Socorro, NM, United States and Susan L Bilek, New Mexico Institute of Mining and Technology, Earth and Environmental Science, Socorro, United States
 
Event Locations and Moment Tensor Inversion of Mining Induced Microseismicity (1076643)
Himanshu Barthwal1, Matthew van den Berghe2 and Robert Shcherbakov1, (1)University of Western Ontario, Department of Earth Sciences, London, ON, Canada, (2)Nutrien Ltd., Saskatoon, SK, Canada
 
Seismotectonics of the Easternmost Segment of Gofar Transform Fault (1078655)
Jianhua Gong1, Wenyuan Fan1, Margaret S Boettcher2, Jeffrey Joseph McGuire3, John A Collins4, Jessica M Warren5, Mark D Behn6, Emily C Roland7, Christopher R German8 and Yajing Liu9, (1)Scripps Institution of Oceanography, La Jolla, CA, United States, (2)University of New Hampshire, Durham, NH, United States, (3)US Geological Survey, Menlo Park, CA, United States, (4)Woods Hole Oceanographic Institution, Woods Hole, MA, United States, (5)University of Delaware, Newark, DE, United States, (6)Boston College, Earth and Environmental Sciences, Chestnut Hill, United States, (7)Western Washington University, Geology Department and Marine and Coastal Sciences Program, Bellingham, WA, United States, (8)Woods Hole Oceanographic Institution, Woods Hole, United States, (9)McGill University, Department of Earth and Planetary Sciences, Montreal, QC, Canada
 
Earthquake source parameter inversion in the Western Québec Seismic Zone (1088426)
Justin Chien, McGill University, Earth & Planetary Sciences, Montreal, QC, Canada, Andres Felipe Felipe Peña Castro, University of New Mexico Main Campus, Earth and Planetary Sciences, Albuquerque, United States and Yajing Liu, McGill University, Department of Earth and Planetary Sciences, Montreal, QC, Canada
 
Connecting the Co- and Post-seismic Fault Behavior in Ridgecrest-Coso Region with the Pre-earthquake Seismicity (2008-2019): a Revisit with AI Phase Picker (1092272)
Yijian Zhou, University of California Riverside, Riverside, United States and Abhijit Ghosh, UC, Riverside, Riverside, United States
 
Full Time-series Inversion (FTI)： a stable and flexible strategy to invert for after-slips (1103938)
Han Yue1, Kang Wang2, Lian Xue1, Zhengkang Shen3 and Jianbao Sun4, (1)ITAG Institute of Theoretical and Applied Geophysics, Peking University, Beijing, China, (2)IGPP, La Jolla, CA, United States, (3)National Science Foundation, Arlington, VA, United States, (4)State Key Lab. of Earthquake Dynamics, Institute of Geology, CEA, Beijing, China
 
Why are repeating earthquakes so infrequent: partial ruptures or slowly-slipping fault strands? (Invited) (1106593)
Jessica C Hawthorne, University of Oxford, Department of Earth Sciences, Oxford, United Kingdom and Alice R Turner, University College London, London, United Kingdom
 
Stress change and fault interaction of adjacent dip-slip, creeping faults in Taiwan (1116315)
Wei Peng, National Taiwan Normal University, Department of Earth Sciences, Taipei, Taiwan and Kate Huihsuan Huihsuan Chen, Department of Earth Sciences, National Taiwan Normal University, Taipei, Taiwan
 
Investigating microearthquake multiplets using ocean bottom seismometers in a mid-ocean ridge hydrothermal field (1121779)
Zoe Krauss, University of Washington, School of Oceanography, Seattle, WA, United States and William S D Wilcock, University of Washington, School of Oceanography, Seattle, United States
 
Comparing Modeling and Seismological Stress Drops of the Repeating Earthquake Sequences Near Parkfield, California, USA (1129807)
Hoi Leung Pun, University of Toronto, Earth Sciences, Toronto, ON, Canada, Semechah K. Y. Lui, University of Toronto Mississauga, Chemical and Physical Sciences, Mississauga, Canada; University of Toronto, Earth Sciences, Toronto, Canada, Yen-Yu Lin, National Central University, Chungli, Taiwan and Nadia Lapusta, California Institute of Technology, Seismological Laboratory, Pasadena, United States; California Institute of Technology, Department of Mechanical and Civil Engineering, Pasadena, CA, United States
 
Seismic Swarm and Surface Deformation in Kamanjab Inlier, Northern Namibia (1134827)
Moses Angombe1, Justin Chien1, Guy Salomon2, Mako Sitali3 and Yajing Liu4, (1)McGill University, Earth & Planetary Sciences, Montreal, QC, Canada, (2)University of Victoria, School of Earth and Ocean Sciences, Victoria, Canada, (3)Geological Survey of Namibia, Windhoek, Namibia, (4)McGill University, Department of Earth and Planetary Sciences, Montreal, QC, Canada
 
Seismicity Migration and a Surface Creep Event in 2021 on the Calaveras Fault (1137740)
Litong Huang, University of California Santa Cruz, Santa Cruz, CA, United States, Susan Y Schwartz, University of California-Santa Cruz, Santa Cruz, CA, United States and Emily E Brodsky, University of California Santa Cruz, Earth and Planetary Sciences, Santa Cruz, CA, United States
 
Triggered Earthquake Swarms in Southern Hispaniola Revealed by Spatiotemporal Evolution of Seismicity from Multi-Station Template Matching (1139834)
Hsin-Yu Lee, University of California, Riverside, Department of Earth and Planetary Sciences, Riverside, CA, United States and Roby Douilly, UCR, Riverside, United States
 
Microearthquake detection in Gangwon Province, South Korea (1140189)
Jeongin Lee, Junhyung Lee and Tae-Kyung Hong, Yonsei University, Earth System Sciences, Seoul, South Korea
 
Unraveling the complex interplay of different mechanisms driving the seismicity at the Alto Tiberina Fault with unsupervised clustering. (1144193)
David Essing, Université Grenoble Alpes, Institut des Sciences de la Terre (ISTerre), Saint Martin d'Hères, France, Piero Poli, CNRS, Université Grenoble Alpes, Institut des Sciences de la Terre (ISTerre), St Martin D'Hères, France and Leonard Seydoux, Massachusetts Institute of Technology, DEPARTMENT OF EARTH, ATMOSPHERIC AND PLANETARY SCIENCES, Cambridge, United States
 
Spatio-temporal Patterns of Fluid-driven Aseismic Slip Transients: Implications for Seismic Swarms (1146781)
Alexis Sáez and Brice T Lecampion, École Polytechnique Fédérale de Lausanne (EPFL), Institute of Civil Engineering, Gaznat chair on Geo-Energy, Lausanne, Switzerland
 
The 14 December 2021 ML 4.9 Jeju Offshore Earthquake in Korea and its Implications to Geology, Geophysics, and Seismic Hazard (1147560)
Yu Jin Sohn1, Wooseok Seo2, Seok-Hoon Yoon3, Woo Seok Yoon3, U Seong Kim3, Kwang-Hee Kim2, Su Young Kang1 and Young-Cheol Lee1, (1)Pusan National University, Institute of Geohazard Research, Busan, South Korea, (2)Pusan National University, Department of Geological Science, Busan, South Korea, (3)Jeju National University, Jeju, South Korea
 
Geometrical properties of seismicity in California (1157795)
Zachary E. Ross, California Institute of Technology, Seismological Laboratory, Pasadena, United States, Yehuda Ben-Zion, University of Southern California, Department of Earth Sciences and Southern California Earthquake Center, Los Angeles, United States and Ilya V Zaliapin, University of Nevada, Reno, Mathematics and Statistics, Reno, NV, United States
 
Seismic activity under the different confining pressure conditions (1160151)
Nana Yoshimitsu, Kyoto University, Kyoto, Japan and Hironori Kawakata, Ritsumeikan University, Kusatsu Shiga, Japan
 
A Semi-Supervised Machine-Learning Approach to Detecting Repeating Earthquakes on the San Andreas Fault (1163687)
Theresa Sawi1, Felix Waldhauser2, Benjamin K Holtzman3, Eric Beauce4, Kaiwen Wang1 and Nate Groebner5, (1)Lamont-Doherty Earth Observatory, Columbia University, Palisades, United States, (2)Columbia University, Lamont-Doherty Earth Observatory, Palisades, United States, (3)Lamont Doherty Earth Observatory, Columbia Univ., Palisades, NY, United States, (4)Lamont–Doherty Earth Observatory, Columbia University, New York City, United States, (5)Groebner Research, New Ulm, United States
 
Machine Learning Modeling of Fault Slip Experiments at Mont Terri Underground Laboratory (1170477)
Utkarsh Mital1, Mengsu Hu2, Yves Guglielmi1, Jonny Rutqvist1 and Carl I Steefel2, (1)Lawrence Berkeley National Laboratory, Earth and Environmental Sciences Area, Berkeley, United States, (2)Lawrence Berkeley National Laboratory, Earth and Environmental Sciences Area, Berkeley, CA, United States
 
Interplay of seismic and aseismic slip on the San Andreas fault near San Juan Bautista, central California (1175495)
Heather R Shaddox, University of California Berkeley, Berkeley, CA, United States, Roland Burgmann, Department of Earth and Planetary Science, University of California Berkeley, Berkeley, United States and Bilham Roger, University of Colorado Boulder, 3., Department of Geological Sciences, Boulder, United States
 
Preliminary Relocation Results from a Temporary Seismic Deployment Around the Source Zone of the 1886 M 7 South Carolina Earthquake (1183747)
William E. Chen1, Miguel Neves2, Clara Daniels3, Qiushi Zhai2, Steven C Jaume4 and Zhigang Peng3, (1)University of Minnesota Twin Cities, Minneapolis, United States, (2)Georgia Institute of Technology, Earth and Atmospheric Sciences, Atlanta, United States, (3)Georgia Institute of Technology, Earth and Atmospheric Sciences, Atlanta, GA, United States, (4)College Charleston, Department of Geology and Environmental Geosciences, Charleston, SC, United States
 
Stepovers connecting a shallow, creeping Sumatran fault segment to its deep, locked Seulimeum branch revealed by a dense seismic array (1196937)
Shengji Wei1, Zheng Yang Choong2, Yukuan Chen3, Umar Muksin4, Karen Lythgoe5, Arifullah Arifullah6, Andrean Simanjuntak6 and Chenyu Li7, (1)Nanyang Technological University, Earth Observatory of Singapore, Asian School of the Environment, Singapore, Singapore, (2)Nanyang Technological University, CNYang Program, Singapore, Singapore, (3)Earth Observatory of Singapore, Singapore, Singapore, (4)Syiah Kuala University, Department of Physics, Banda Aceh, Indonesia, (5)Nanyang Technological University, Singapore, Singapore, (6)Universitas Syiah Kuala, Banda Aceh, Indonesia, (7)Nanyang Technological University, Earth Observatory of Singapore, Singapore, Singapore
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