Meeting Abstracts

The Statewide California Earthquake Center (SCEC) collaborates with academic, government, industry, and other organizations to advance earthquake science, community resilience, and education by: (1) Gathering and analyzing data from field observations and laboratory experiments. (2) Developing system-level models and simulations of earthquake processes to synthesize knowledge as a physics-based understanding of seismic hazard. (3) Communicating that understanding to expand knowledge and reduce earthquake risk.

Participants are invited to present recent work aligned with SCEC priorities during the poster sessions.

Results 101-150 of 237

SCEC ID	Category	Title and Authors	SCEC Award
Group B Poster 032	FARM	Bayesian Calibration of dynamic models of earthquake sequences using observations from past large earthquakes Hojjat Kaveh, Oliver Dunbar, Jean-Philippe Avouac, Andrew Stuart Physics-based models of the earthquake cycle could be used for time-dependent hazard assessment. For such an application, their parameters must be calibrated so that simulated earthquake sequences reproduce the statistics of past earthquakes,... more Themes: Earthquake Cycle Simulations & Forecasting
Group A Poster 239	GM	Next Generation Ground Motion Simulation, Validation, and Utilization (GM-SVU) in Seismic Hazard and Engineering Applications: A New SCEC Technical Activity Group Maha Kenawy, Sanaz Rezaeian, Scott Callaghan, Chukwuebuka Nweke, Farzin Zareian Physics-based ground motion simulations have matured to the point where they can meaningfully inform probabilistic seismic hazard analysis (PSHA) and building code-oriented response history analysis (RHA), yet their adoption in practice remains... more Themes: Earthquake Scenarios for Hazard and Risk Assessment \| Physics-Based Ground Motion Simulations & Validation \| Utilization of Ground Motion Simulations & Records	26089
Group B Poster 086	CEM	Technical Activity Group (TAG): Northern California Cascadia - San Andreas Transition (NORCAT) Debi Kilb, Matthew Herman, Kathryn Materna, jason patton, Vera Schulte-Pelkum, David Shelly, Amanda Thomas The NORCAT Technical Activity Group (TAG) focuses on advancing research on the northern California transition between Cascadia subduction, the San Andreas Fault system, and the Mendocino Triple Junction. This interlinked system connects the two... more Themes: Advancing Community Earth Models for Hazard Analyses \| Earthquake Scenarios for Hazard and Risk Assessment \| Engaging Communities in Earthquake Preparedness	26083
Talk	FARM	From hazard to design variable: slip-induced permeability enhancement in understressed faults and the future of geothermal energy Taeho Kim Seismic hazard assessment in fluid injection settings has traditionally focused on critically stressed faults, treating understressed faults as benign. We present field observations and models from the world's largest enhanced geothermal system... more Themes: Earthquake Cycle Simulations & Forecasting
Group B Poster 030	FARM	Advancing Community Benchmarking for Sequences of Earthquakes and Aseismic Slip: Objectives and Planned Activities of the SCEC SEAS Technical Activity Group Taeho Kim, Mohamed Abdelmeguid, Eric Dunham, Brittany Erickson, Valere Lambert, Pierre Romanet, Prithvi Thakur The SCEC (Statewide California Earthquake Center) Sequences of Earthquakes and Aseismic Slip (SEAS) community has developed benchmarks for earthquake-cycle models for more than a decade. Definitions and results are openly available at https://strike... more Themes: Advancing Community Earth Models for Hazard Analyses \| Earthquake Cycle Simulations & Forecasting \| Engaging Communities in Earthquake Preparedness	26093
Group B Poster 082	CEM	Spatially continuous slip rake angles across nonplanar fault geometry Matthew Knepley, Brad Aagaard, Charles Williams Accurately simulating earthquake rupture requires consistent directional conventions across a fault surface. Lateral (strike-slip) motion is measured along a fault's local strike direction, and reverse (dip-slip) motion along its local up-... more Themes: Advancing Community Earth Models for Hazard Analyses
Group B Poster 174	CCB	The Sierra Earthquake Risk Reduction Technical Action Group (SiERRa-TAG) Rich Koehler, Christie Rowe, Ben Mason Seismic hazard is poorly defined in the northern Walker Lane along the Nevada-California border zone. Risk is elevated around major dams and growing population centers, with changing water supply/demand and considerable fire risk, there is high... more Themes: Earthquake Scenarios for Hazard and Risk Assessment \| Rapid Post-Earthquake Investigations & Communications \| Engaging Communities in Earthquake Preparedness	26085
Group A Poster 179	Seismology	Simulating induced seismicity mitigation measures in the Permian Basin, Texas Kayla Kroll, Elizabeth Cochran Induced seismicity resulting from subsurface wastewater disposal can be a challenge to operators that seek to meet production or storage objectives. Effective mitigation of induced seismicity requires proactive evaluation of operational controls. We... more Themes: Earthquake Cycle Simulations & Forecasting
Group B Poster 044	PBS	Redefining the 3-D Plate Boundary Structure of the Mendocino Triple Junction (MTJ) Sarah Kummerfeldt, Kevin Furlong, Kirsty Mckenzie This study focuses on the region near the Mendocino Triple Junction (MTJ), where the Gorda slab geometry is not well constrained in terms of its depth and configuration. As a result, earthquake studies have reached disparate conclusions for the... more Themes: Advancing Community Earth Models for Hazard Analyses
Group A Poster 049	Geodesy	Linking Fault Slip and Near-Surface Deformation on the Southern San Andreas Fault at Painted Canyon: Preliminary Results Asenath Kwagalakwe, Eileen Evans, Gladys Pantoja, Allen Gontz, Yehuda Bock, Aubrey Bennett, Jennifer Haase, Matthew Brandin, Yuri Fialko, Cornelius Waldhausen The San Andreas Fault (SAF) is a major plate-boundary fault in California characterized by spatial variations in slip behavior, ranging from fully locked to aseismically creeping. The southern San Andreas Fault (sSAF) is predominantly locked but... more Themes: Advancing Community Earth Models for Hazard Analyses \| Earthquake Scenarios for Hazard and Risk Assessment \| Earthquake Cycle Simulations & Forecasting
Group A Poster 029	FARM	Dynamic Rupture Behavior Across Asymmetric Fault Intersections in the Hayward-Calaveras System Christodoulos Kyriakopoulos, Brittany Botell, Gareth Funning The Hayward–Calaveras fault system poses a major hazard in the San Francisco Bay Area, with more than seven million people living atop a network of active faults capable of producing M7-type earthquakes. Previous studies have demonstrated that... more Themes: Earthquake Scenarios for Hazard and Risk Assessment
Group B Poster 014	FARM	Ubiquitous interactions and subcritical patches explain the irregularity of repeating earthquakes Nadia Lapusta, Linxuan Li Repeating earthquakes, or repeaters, are commonly interpreted as ruptures of the same fault patch and widely used to study fault slip behavior, including creep rates, healing, and stress drops. Despite their apparent simplicity, repeaters exhibit... more Themes: Earthquake Cycle Simulations & Forecasting	25276
Group B Poster 168	ASI	Seismic Retrofit Needs in Southern California Before the ShakeOut Earthquake, and the Cost of Dithering Ishmael Legaspi, Sandi Shwe Win, LaMar Anderson, Lucile Jones, Keith Porter Earthquake hazard maps show how strongly the ground will shake with a specified probability. The language of probability tends to hinder rather than to aid decision-making for most people. We used the original ShakeOut scenario shakemap to a... more Themes: Earthquake Scenarios for Hazard and Risk Assessment \| Utilization of Ground Motion Simulations & Records \| Engaging Communities in Earthquake Preparedness	26067
Group A Poster 013	FARM	Gutenberg– Richter or Safer? On the Magnitude–frequency Distributions of Induced Seismicity Linxuan Li, Kyungjae Im, Jean-Philippe Avouac Injecting fluids into the subsurface frequently triggers earthquakes, yet the maximum magnitude of these events remains difficult to forecast. Earthquake magnitudes are commonly described by the Gutenberg–Richter (GR) distribution, in which... more Themes: Earthquake Scenarios for Hazard and Risk Assessment \| Earthquake Cycle Simulations & Forecasting
Group A Poster 007	FARM	Offset well pressure transient caused by fault slip constrains fault zone hydraulic properties in EGS stimulation Meng Li, Taeho Kim, Eric Dunham, Sireesh Dadi, Paul Segall, Aleksei Titov, Richard Gibson, Shanna Chu Safe and successful enhanced geothermal systems (EGS) development requires managing induced seismicity and aseismic slip, which depends crucially on understanding hydraulic fracture-fault interactions and evolution of fault zone hydraulic properties... more Themes: Earthquake Scenarios for Hazard and Risk Assessment \| Earthquake Cycle Simulations & Forecasting
Group A Poster 187	Seismology	Fault damage structure at depth extracted by FZTWs and receiver functions from teleseismograms possible monitor its variations during earthquake cycle Yong-Gang Li We analyzed the teleseismograms recorded at a seismic nodal-array consisting of 100 stations deployed atop the Calico Fault (CF) in Mojave Desert, California, and identified the fault-zone trapped waves (FZTWs) characterized by large amplitudes at 0... more Themes: Earthquake Cycle Simulations & Forecasting
Group B Poster 062	Geodesy	Detection of Nonlinear Slow Deformation From Wrapped Phase Gradients in Low-Coherence Terrain Zhen Li, Jean-Philippe Avouac The temporal evolution of slow deformation reflects the redistribution of crustal stress and mass under tectonic and anthropogenic forcing and provides constraints on the driving processes. Quantifying this evolution requires sustained observations... more Themes: Earthquake Scenarios for Hazard and Risk Assessment \| Utilization of Ground Motion Simulations & Records
Group A Poster 009	FARM	Hydraulic Forcing and Fault-Network State Govern Injection-Induced Rupture Cascades Zhengze Li, Sylvain Barbot Subsurface fluid injection enables wastewater disposal, geoenergy development, and geological storage but can trigger damaging earthquakes. Why some induced instabilities remain localized whereas others escalate into multi-fault rupture cascades... more Themes: Earthquake Scenarios for Hazard and Risk Assessment \| Earthquake Cycle Simulations & Forecasting
Group A Poster 177	Seismology	Cloud-Based Ambient Noise Interferometry for Statewide Seismic Velocity Monitoring Across California Chris Lin, Weiqiang Zhu, Taka'aki Taira Passive seismic monitoring has become a powerful tool for tracking environmental and subsurface changes using long-term continuous seismic records. However, the computational and storage demands increase rapidly as the number of stations grows.... more
Group B Poster 066	Geodesy	Towards 3D InSAR time series displacement with Kalman filtering - Feasibility and theoretical accuracy Li-Chieh Lin, Gareth Funning InSAR velocity products have been widely used in various fields to reveal long-term deformation associated with different processes. If sufficient information from different radar lines of sight (LOS) is available, we may decompose such velocities... more Themes: Advancing Community Earth Models for Hazard Analyses
Group B Poster 018	FARM	When and where does aseismic creep stop rupture propagation? Julian Lozos Aseismic creep on faults is characterized by rate-strengthening friction, which means that the fault actively resists movement as slip rates increase. This resistance to coseismic rupture velocities approaching from adjacent locked fault sections... more	24201
Group A Poster 131	Seismology	Seismic Geodesy with Distributed Acoustic Sensing: Static Deformation from Aftershocks of the 2024 Mw 7.2 Hualien Earthquake Yang Ma, Lingsen Meng, Yen-Yu Lin Seismic geodesy has traditionally relied on Global Navigation Satellite System (GNSS) measurements to resolve coseismic deformation and constrain earthquake source processes. However, the spatial density and sensitivity of geodetic observations... more
Group B Poster 094	Geology	Newly released Alquist-Priolo Earthquake Fault Zones (APEFZs) for the Hayward and Concord faults in the eastern San Francisco Bay Area Danielle Madugo, Carla Rosa, Judith Zachariasen The Alquist-Priolo (AP) Fault Zoning Act (AP Act) directs the California Geological Survey (CGS) to map Holocene-active faults and define Zones of Required Investigation, or Alquist-Priolo Earthquake Fault Zones (APEFZs) and hereafter referred to as... more Themes: Advancing Community Earth Models for Hazard Analyses \| Engaging Communities in Earthquake Preparedness
Group A Poster 033	FARM	An Updated San Andreas Fault Geometry in Parkfield, California Adam Margolis, David Oglesby Publicly available 3D models of the San Andreas Fault (SAF) in the Parkfield region lack fine details along strike and dip. Presently, the Statewide California Earthquake Center – Community Fault Model (SCEC-CFM) provides limited coverage along the... more Themes: Earthquake Scenarios for Hazard and Risk Assessment \| Earthquake Cycle Simulations & Forecasting
Group A Poster 027	FARM	Fault Connectivity Controls Synthetic Earthquake Catalogs and 30-Year Rupture Probabilities in RSQSim Simulations of the Eastern San Francisco Bay Area Evan Marschall, Alice-Agnes Gabriel, Bruce Shaw, Jeena Yun, Albert Kottke, Jennifer Donahue, Michael Oskin The faults of the eastern San Francisco Bay Area, California, have long been known as a source of seismic hazard. This potential for large earthquakes, paired with high population density and economic activity, leads to a high seismic risk in the... more Themes: Earthquake Cycle Simulations & Forecasting
Group B Poster 124	Seismology	Shallow Crustal Defocusing of Near-Fault S-Waves: A physical Origin for Distance attenuation Alex Marston, Chen Ji, Morgan Moschetti, Jorge Crempien Conventionally, near-fault geometrical spreading (GS) of S waves is assumed to follow a 1/R decay, where R is hypocentral distance. While steeper apparent decay rates are occasionally reported for R<50-60 km, their physical origin remains... more Themes: Physics-Based Ground Motion Simulations & Validation	26018
Group B Poster 170	ASI	Superresolution of the urban subsurface using telecommunications fiber optic sensors Eric Matzel, Gene Ichinose, Claire Doody, Rengin Gok, Jiun-Ting Lin, Christina Morency, Justin Barno Telecommunications fiber-optic networks provide a widespread, high-bandwidth resource for distributed acoustic sensing (DAS), enabling unprecedented seismic sampling across urban environments. DAS collects detailed records of the complex urban... more Themes: Advancing Community Earth Models for Hazard Analyses \| Utilization of Ground Motion Simulations & Records \| Engaging Communities in Earthquake Preparedness
Group A Poster 151	Seismology	Optimized Source and Station Graphs for Spatially Adaptive Earthquake Phase Association with Graph Neural Networks Ian McBrearty, Gregory Beroza Earthquake phase association is an essential step for developing high-quality earthquake catalogs. Many algorithms have recently been proposed, however most still struggle on dense seismicity sequences, high density seismic networks, and large... more Themes: Earthquake Scenarios for Hazard and Risk Assessment \| Rapid Post-Earthquake Investigations & Communications
Talk	ASI	Scenarios as agents of change Sara McBride How do we implement proactive measures en masse that help our communities strengthen their physical and social infrastructure before the next large earthquake? One efficacious approach involves the utilization of scenarios, exemplified by the... more Themes: Earthquake Scenarios for Hazard and Risk Assessment \| Engaging Communities in Earthquake Preparedness
Group B Poster 084	CEM	Development of a SCEC Paleoseismic Database Sally McGill, Kim Blisniuk, Michael Oskin, Kathy Barton, Ethan Failano, Annie Hinh, Angelika Jones, Miranda Owen, Thomas Rockwell, Sinan Akciz, Timothy Dawson, Scott Marshall, Belle Philibosian, Ian Pierce, Katherine Scharer, Gordon Seitz Building on prior SCEC-funded efforts, we are compiling a paleoseismic database for the major strike-slip plate boundary faults in California. This work is a part of the UNREST TAG effort to develop an AI/ML-ready Digital Twin Fault System for... more Themes: Advancing Community Earth Models for Hazard Analyses \| Earthquake Scenarios for Hazard and Risk Assessment \| Earthquake Cycle Simulations & Forecasting	26076, 25121
Group B Poster 098	Geology	Powell Center Working Group on Paleoseismometry Constraints for Seismic Hazard Models Devin McPhillips, Drake Singleton, Thomas Pratt, Edward Field, Ramon Arrowsmith, Daniel Brothers, Zhiang Chen, Audrey Dunham, Christopher DuRoss, Fernando Garcia, Alex Grant, Anne Hulsey, Albert Kottke, Sean Lahusen, Christopher Madugo, Xiaofeng Meng, Anna Rood, Brian Sherrod, Mark Stirling, Katleen Wils, Robert C. Witter The U.S. National Seismic Hazard Model (NSHM) quantifies the probability of damaging earthquake shaking to guide engineering, planning and preparedness. Both the NSHM and ground-motion simulations are difficult to test because the return times of... more Themes: Physics-Based Ground Motion Simulations & Validation \| Utilization of Ground Motion Simulations & Records
Group B Poster 106	Geology	Does Singapore have active faults? Emerging geomorphic, sedimentological, and coral microatoll evidence for recent coseismic rupture Aron Meltzner, Liam Newman, Fangyi Tan, Tingli Yan, Lin Thu Aung, Yu Wang Singapore is commonly believed to be tectonically stable, with seismic hazard thought to arise solely from distant Sumatran earthquakes. This view, however, overlooks two M≥5 earthquakes in 1922, less than ~140 km away in neighboring Johor, and a... more
Talk	EFP	SCEC’s Earthquake Rupture and Ground Motion Forecasting Capabilities Xiaofeng Meng Over the past two decades, SCEC has built an integrated pipeline for seismic hazard forecasting supported by best available science in aftershock sequence statistics (ETAS), earthquake rupture forecasts (UCERF), and ground motion models. These... more Themes: Physics-Based Ground Motion Simulations & Validation \| Earthquake Cycle Simulations & Forecasting
Group B Poster 236	GM	Toward Incorporating DAS into Ground Motion Studies Xiaofeng Meng, Qiushi Zhai, Albert Kottke, James Atterholt, Camilo Ignacio Pinilla Ramos, Yehuda Ben-Zion Applications of Distributed Acoustic Sensing (DAS)’s in earthquake studies have mostly focused on arrival times. Its potential for improving ground motion quantification has not been rigorously investigated yet. We make several steps towards... more Themes: Utilization of Ground Motion Simulations & Records
Group A Poster 125	Geology	Refining Time-Dependent Probabilities of Full-Margin Rupture Along the Cascadia Subduction Zone Using Recurrence Intervals Derived from Sediment Deposition Rate and Thickness Chris Milliner, Michael Oskin, Jessica Velasquez, Jochen Woessner Paleoseismic and historic records indicate full-margin Cascadia Subduction Zone (CSZ) megathrust ruptures (Mw 9+) depart from a Poisson, memoryless process, motivating a renewal-based, time-dependent probability model. In this study, we investigate... more Themes: Advancing Community Earth Models for Hazard Analyses \| Earthquake Scenarios for Hazard and Risk Assessment \| Earthquake Cycle Simulations & Forecasting
Group B Poster 152	EFP	Bayesian on-fault b-value estimates inferred from paleoseismology and the NSHM23-WUS model Kevin Milner, Morgan Page, Edward Field Although the Gutenberg-Richter (GR) magnitude-frequency distribution (MFD) with a b-value of approximately 1 has been robustly observed globally and for regions, the magnitude-frequency distribution of large ruptures on individual faults remains... more Themes: Earthquake Cycle Simulations & Forecasting
Group A Poster 083	CEM	Regionalization of a California-wide seismic tomography model Laurent Montesi, Arfan Rashid Due to its long geological history, the continental crust is composed of many heterogeneous fragments separated by sharp faults and boundaries. Better understanding this heterogeneity and its effect on the stress field can help refine estimates of... more Themes: Advancing Community Earth Models for Hazard Analyses	24181
Group A Poster 143	Seismology	Exploring the Increasing Prevalence of Swarms and Foreshocks in Tiny Earthquakes as Detected by Recent High-Sensitivity Earthquake Catalogs Taiga Morioka, Peter Shearer, Wenyuan Fan The prevalence of foreshocks before larger earthquakes has long been debated and remains central to understanding earthquake initiation. Foreshocks are observed far less frequently in standard seismic catalogs than in some laboratory experiments.... more
Group A Poster 237	CCB	Ground-motion variability in SCEC CyberShake Morgan Moschetti, Scott Callaghan, Kyle Withers, Xiaofeng Meng, Robert Graves We analyze CyberShake version 22.12 to identify the controlling features of variability from three-dimensional (3D) ground-motion simulations. Low-frequency results (T≥2 s) consist of pseudospectral accelerations from seismic sources in the Uniform... more Themes: Physics-Based Ground Motion Simulations & Validation
Group A Poster 047	Geodesy	USGS GNSS data collection and analysis for quantifying interseismic fault creep and imaging slip throughout the earthquake cycle Jessica Murray, Eleyne Phillips, Ryan Turner Creep is well-documented on several faults of the San Andreas system in northern California. Geodetic measurements of crustal deformation surrounding creeping faults are a primary observation for modeling the rates and spatial distribution of creep... more
Group A Poster 101	Geology	Characterizing the Quaternary slip history of an unmapped strand of the southern San Andreas fault near San Gorgonio Pass through sedimentary provenance and stratigraphy Leigh Musick, Kim Blisniuk, Julie Fosdick, Patrick O'Connor This study presents the mid to late Quaternary slip history of a recently identified unmapped strand of the San Andreas fault in the San Gorgonio Pass region of Southern California through detailed stratigraphy and sedimentary provenance. This... more Themes: Advancing Community Earth Models for Hazard Analyses
Group A Poster 219	GM	High-Fidelity 0-5 Hz Physics-Based Ground-Motion Simulation for the Los Angeles Basin Using the EQSIM Framework Rie Nakata The Los Angeles Basin Area contains dense urban communities, major lifeline infrastructure, and multiple active faults capable of producing damaging earthquakes. Because its three-dimensional sedimentary structure can amplify ground motion, extend... more Themes: Advancing Community Earth Models for Hazard Analyses \| Physics-Based Ground Motion Simulations & Validation
Group A Poster 037	FARM	The influence of fracture propagation mode on surface rupture morphology during the 2019 M7.1 Ridgecrest, California earthquake Josie Nevitt, Benjamin Brooks, Todd Ericksen, Nima Ekhtari, Craig Glennie, Kenneth Hudnut, Simone Yeager Earthquake surface rupture results from the propagation and interaction of fractures in the shallow crust but is rarely investigated using fracture mechanics concepts. In this study, we use mobile laser scanning, low-altitude aerial imagery, and... more
Group B Poster 080	CEM	Suitable 3D Geometry for the San Andreas Fault ShakeOut Scenario 2.0 from Seismicity Craig Nicholson A critical component of the San Andreas Fault (SAF) ShakeOut Scenario 2.0 rupture model is accurate and reliable 3D fault geometry. This geometry can be provided by the fault models in CFM5.3 that are based on surface mapping, seismicity and... more Themes: Advancing Community Earth Models for Hazard Analyses \| Earthquake Scenarios for Hazard and Risk Assessment	21023
Group B Poster 054	SDOT	Investigating the impact of restraining bend dip on fault evolution using scaled experiments Michelle Nishimoto, Michele Cooke Scaled experiments provide direct observations of and detailed insights into evolving fault networks. Active strike-slip fault systems host many restraining bends, which can serve as points of earthquake initiation or termination. Because the... more
Group A Poster 233	GM	Comparative Validation of Physics-Based Ground Motion Simulations in Northern and Southern California Chukwuebuka Nweke, Sajan K C, Robert Graves, Evan Hirakawa This study evaluates and compares physics-based ground-motion simulations for moderate-magnitude earthquakes in Northern and Southern California. The dataset includes 26 San Francisco Bay Area events and 30 Southern California events with magnitudes... more Themes: Advancing Community Earth Models for Hazard Analyses \| Physics-Based Ground Motion Simulations & Validation \| Utilization of Ground Motion Simulations & Records	24062, 22160
Group A Poster 103	Geology	New field observations reveal two previously unmapped fault strands in the San Gorgonio Pass region of the San Andreas fault system Patrick OConnor, Kim Blisniuk, Michae Musick This study presents results of new bedrock and geomorphic mapping from field observations and high-resolution airborne LiDAR topographic scanning, undertaken in the San Gorgonio Pass region of the San Andreas fault system, in the study area south of... more Themes: Advancing Community Earth Models for Hazard Analyses \| Earthquake Scenarios for Hazard and Risk Assessment
Group A Poster 035	FARM	Dynamic branching and surface rupture in the Signal Hill Stepover on the Newport-Inglewood Fault, Southern California David Oglesby, Natasha Toghramadjian, Andreas Plesch, John Shaw, Wenqiang Zhang The right-lateral Newport-Inglewood fault (NIF) system cuts across the densely populated Los Angeles (LA) metropolitan area and sourced the destructive 1933 MW 6.4 Long Beach earthquake, demonstrating its significant seismic hazard. At Long Beach,... more Themes: Advancing Community Earth Models for Hazard Analyses \| Earthquake Scenarios for Hazard and Risk Assessment \| Physics-Based Ground Motion Simulations & Validation	24126
Group A Poster 077	CEM	SCEC Multi-scale Community Velocity Model TAG Kim Olsen, Evan Hirakawa, Te-Yang Yeh, Yehuda Ben-Zion, Clifford Thurber, Oliver Boyd, . the SCEC Multi-scale Community Velocity Model TAG Working Group The SCEC Multi-scale Community Velocity Model TAG is centered on the multi-scale P and S seismic velocity models of California and Western Nevada version 1 (MUSCAL) recently developed by Yeh, Ben-Zion and Olsen (2026). MUSCAL was generated by... more Themes: Advancing Community Earth Models for Hazard Analyses \| Physics-Based Ground Motion Simulations & Validation	26094
Group A Poster 121	Geology	Understanding Natural Recurrence of Earthquakes and Slip over Time (UNREST) Technical Activity Group Michael Oskin, Sinan Akciz, Kim Blisniuk, Sally McGill, Thomas Rockwell, Alba Rodriguez Padilla, Ramon Arrowsmith, Timothy Dawson, Lisa Grant Ludwig, Genya Ishigaki, Ian Pierce, Gordon Seitz, Erik Perkins, Sophia Esquenet, Brian Ducharme The UNREST TAG leads a community effort to develop an AI/ML-ready Digital Twin Fault System to test earthquake-cycle models against the observed paleoseismic record, refine data interpretation, and improve time-dependent rupture forecasts. The... more Themes: Advancing Community Earth Models for Hazard Analyses \| Earthquake Scenarios for Hazard and Risk Assessment \| Earthquake Cycle Simulations & Forecasting	26076

The Statewide California Earthquake Center is committed to providing a safe, productive, and welcoming environment for all participants. We take pride in fostering a diverse and inclusive SCEC community, and therefore expect all participants to abide by the SCEC Activities Code of Conduct.

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