T026
Understanding the seismic cycle and the role of transient deformation: a multidisciplinary approach
Session ID#: 247519
Session Description:
Studies in seismology and geodesy provide precise insights into fault zone deformation, yet the limited instrumental record captures only a fraction of the seismic cycle. Meanwhile, phenomena like slow slip events play a significant role in the seismic cycle but remain a poorly understood aspect of fault behavior. This session will highlight research that integrates different disciplines and datasets—geological records, laboratory experiments, geophysical observations, and numerical modeling—to provide new perspectives on the seismic cycle across a range of spatial and temporal scales, from restrengthening of experimental micro-fractures to plate boundary faults. We especially welcome contributions that clarify the role of slow slip and other transient processes in shaping seismic hazards—from subduction zones to crustal faults—and examine how fault zone heterogeneity, frictional properties, fluid flow, and strain accumulation interact to influence earthquake dynamics.
Co-Sponsor(s):
Index Terms:
1242 Seismic cycle related deformations [GEODESY AND GRAVITY]
7230 Seismicity and tectonics [SEISMOLOGY]
8118 Dynamics and mechanics of faulting [TECTONOPHYSICS]
8163 Rheology and friction of fault zones [TECTONOPHYSICS]
Primary Convener: Jared Thomas Bryan, Massachusetts Institute of Technology, Earth, Atmospheric and Planetary Sciences, Cambridge, MA, United States
Conveners: Louise Maubant, Earthquake Research Institute, University of Tokyo, Tokyo, Japan, Matthew S Tarling, McGill University, Department of Earth and Planetary Sciences, Montreal, QC, Canada and Srisharan Shreedharan, Utah State University, Department of Geosciences, Logan, United States
Student/Early Career Convener: Jared Thomas Bryan, Massachusetts Institute of Technology, Earth, Atmospheric and Planetary Sciences, Cambridge, MA, United States
Slow‐to‐Fast or Fast‐to‐Slow Transitions along the Hikurangi Subduction Zone? (1872571)
Louise Maubant1, Laura M Wallace2, Charles A Williams Jr3, Sylvain Michel4, Emilie Klein4 and William Benjamin Frank5, (1)Earthquake Research Institute, University of Tokyo, Tokyo, Japan, (2)University of Texas at Austin, Institute for Geophysics, Austin, United States, (3)GNS Science, Lower Hutt, New Zealand, (4)Ecole Normale Supérieure, PSL Research University, CNRS UMR 8538, Laboratoire de Géologie, Paris, France, (5)Massachusetts Institute of Technology, Department of Earth, Atmospheric, and Planetary Sciences, Cambridge, MA, United States
Triggered vs Spontaneous Slow Slip Events in the Hikurangi Subduction Zone (1877956)
McKenzie Carlson1, Laura M Wallace1,2, Demian M. Saffer1 and Charles A Williams Jr3, (1)University of Texas, Institute for Geophysics, Austin, United States, (2)GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany, (3)Earth Sciences New Zealand, Lower Hutt, New Zealand
Using Sentinel-1 InSAR time series to characterize postseismic motions around the 2021 Mw 5.3 Calipatria earthquake, Imperial Valley, CA (1879678)
Katherine Anna Guns, U.S. Geological Survey, Earthquake Science Center, Moffett Field, United States, Kathryn Materna, University of Colorado at Boulder, Boulder, United States and Andrew J Barbour, U.S. Geological Survey, Moffett Field, United States
Modeling multi-scale subduction zone dynamics: From long-term plate motions to great megathrust earthquakes (1882440)
Jiaqi Fang, California Institute of Technology, Pasadena, CA, United States, Michael Gurnis, California Institute of Technology, Seismological Laboratory, Pasadena, CA, United States and Nadia Lapusta, California Institute of Technology, Pasadena, United States
How does the chemico-mineralogical transition in fluid-mediated faults explain recurrences of low-to-moderate magnitude seismic tremors? - A case study from the Koyna-Warna Intraplate Region, Western India. (1890054)
Piyal Halder1,2 and Anupam Sharma1,2, (1)Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India, (2)Birbal Sahni Institute of Palaeosciences (DST, Govt. of India), Lucknow, India
Microstructural fingerprints of creep, slow slip and abrupt failure in experiments on granitoid fault rocks (1901817)
Daniel Ortega-Arroyo1, Matej Pec2 and Hoagy O. OGhaffari, PhD1, (1)Massachusetts Institute of Technology, EAPS, Cambridge, MA, United States, (2)Massachusetts Institute of Technology, Earth, Atmospheric, and Planetary Sciences, Cambridge, United States
The gap between the seismogenic zone and Episodic Tremor and Slip explained by fluid flow and permeability structures around the mantle wedge corner (Invited) (1905787)
So Ozawa, University of Tokyo, Earthquake Research Institute, Tokyo, Japan, Eric M Dunham, Stanford University, Department of Geophysics, Stanford, United States, Yuyun Yang, Stanford University, ICME, Stanford, United States and Cailey Condit, University of Washington, Seattle, United States
Identifying Very Low Frequency Earthquakes in the Japan Subduction Zone from 2006 to 2016 using the Hi-net High-sensitivity Accelerometers (1917814)
Harrison Burnett, Scripps Institution of Oceanography, La Jolla, CA, United States, Wenyuan Fan, Scripps Institution of Oceanography, La Jolla, United States, Ryo Okuwaki, University of Tsukuba, Institute of Life and Environmental Sciences, Tsukuba, Japan and Takanori Matsuzawa, NIED, Ibaraki, Japan
The Role of Elastic Heterogeneity for Inferring Seismic Cycle Deformation at the Nicoya Peninsula, Costa Rica (1927975)
Chao Song1, Simone Puel2, Dunyu Liu1, Laura M Wallace1 and Thorsten W Becker3, (1)University of Texas at Austin, Institute for Geophysics, Austin, United States, (2)Moody's, Newark, United States, (3)University of Texas at Austin, Jackson School of Geosciences, Austin, United States
The influence of the 2011 Mw 9.1 Tohoku earthquake on the Boso slow slip sequence (1933292)
Luhong Lu1, Yajing Liu1 and Satoshi Ide2, (1)McGill University, Department of Earth and Planetary Sciences, Montreal, QC, Canada, (2)The University of Tokyo, Department of Earth and Planetary Science, Bunkyo-ku, Japan
The 2016 Mw 7.8 Kaikōura, New Zealand, Earthquake Triggers Slow Slip Events and Delays Megathrust Earthquakes in Rate-and-State Friction Simulations of the Hikurangi Subduction Zone (1971746)
Jeena Yun1, Jeremy Wing Ching Wong2, Yuri A Fialko3, Alice-Agnes Gabriel4,5, Dave May1, Laura M Wallace6,7 and Charles A Williams Jr8, (1)Scripps Institution of Oceanography, University of California San Diego, La Jolla, United States, (2)Scripps Institution of Oceanography, University of California San Diego, Institute of Geophysics and Planetary Physics, La Jolla, United States, (3)Scripps Institution of Oceanography, University of California, San Diego, Institute of Geophysics and Planetary Physics, La Jolla, United States, (4)Ludwig-Maximilians-Universität München, Department of Earth and Environmental Sciences, Munich, Germany, (5)University of California San Diego, Scripps Institution of Oceanography, La Jolla, United States, (6)University of Texas at Austin, Institute for Geophysics, Austin, United States, (7)GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany, (8)GNS Science, Lower Hutt, New Zealand
Shallow Aseismic Slip and Stress/Strain Budgets on the Creeping Faults in the Imperial Valley, California (1975329)
Kathryn Materna, University of Colorado at Boulder, Boulder, United States; CIRES, Boulder, United States and Roger Bilham, University of Colorado, CIRES, Boulder, CO, United States
Generation of High-Permeability Splay Faults in Accretionary Wedges and Their Effect on Wedge Overpressure (1982367)
Graciela Lopez Campos1, Maria A Nikolinakou2, Peter B Flemings1 and Demian M. Saffer1, (1)The University of Texas at Austin, Institute for Geophysics and Department of Geological Sciences, Jackson School of Geosciences, Austin, United States, (2)The University of Texas at Austin, Bureau of Economic Geology, Jackson School of Geosciences, Austin, United States
Precursory slow transients on heterogeneous faults (1989838)
Camilla Cattania, Massachusetts Institute of Technology, Department of Earth, Atmospheric, and Planetary Sciences, Cambridge, MA, United States and Roos Verwijs, Massachusetts Institute of Technology, Earth, Atmospheric and Planetary Sciences, Cambridge, United States
InSAR Analysis on Mt. Etna: Preliminary Insights into the Mid-Term Active Faulting Dynamics (1998909)
Francesco Guglielmino1, Raffaele Azzaro1, Steven Jeffrey Brooks1, Roland Bürgmann2 and Federica Sparacino1, (1)Istituto Nazionale di Geofisica e Vulcanologia, Osservatorio Etneo, Catania, Italy, (2)University of California Berkeley, Earth and Planetary Science, Berkeley, United States
