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 201-250 of 281

SCEC ID	Category	Title and Authors	SCEC Award
Group A Poster 013	Seismology	Induced Seismicity in Southeastern New Mexico Justin Rubinstein Since 2015, the Permian Basin in southeastern New Mexico and western Texas has experienced a surge in seismicity. The earthquake rate has been so high that in 2022 the rate of M3+ earthquakes in the Permian exceeded California’s. While seismicity... more
Group B Poster 184	FARM	Improving physics-informed training for forward and inverse problems in earthquake dynamics Cody Rucker Direct observations of earthquake nucleation and propagation are few and yet the next decade will likely see an unprecedented increase in indirect, surface observations that must be integrated into modeling efforts. Machine learning (ML) excels in... more Themes: Advanced Modeling Frameworks \| Improving Predictive Analyses of Seismicity \| Applied Science Implementation
Group B Poster 204	EFP	Nowcasting Earthquakes with QuakeGPT: An AI-Enhanced Earthquake Generative Pretrained Transformer John Rundle Our recent work on earthquake nowcasting has been concerned with the development of methods to track the time dependent state of earthquake risk using earthquake catalog data and standard machine learning techniques. We show the current state of... more Themes: Advanced Modeling Frameworks	25328
Group A Poster 183	FARM	Geomechanical Understanding of Fault Zone Mixing and Implications for Fluid Flow Along Faults in Sedimentary Rocks Brook Runyon, John Shaw Faults can serve as barriers or conduits to fluid flow, significantly impacting fault strength and influencing the nucleation and rupture of both natural and induced earthquakes. Traditional methods for assessing fault fluid flow behavior focus on... more Themes: Improving Observations and Closing Data Gaps \| Advanced Modeling Frameworks
Group A Poster 151	FARM	Slab dehydration–induced hydraulic fracturing: Linking episodic fluid release to slow slip and tremor in subduction zones Alexis Saez, Aitaro Kato, Dmitry Garagash Geological and geophysical observations suggest that slow slip events (SSEs) and tremors occur where pore-fluid pressures approach near lithostatic levels. Moreover, recent observations further suggest that the onset and arrest of SSEs correlate... more Themes: Advanced Modeling Frameworks
Group B Poster 308	RC	Forward and Inverse Problems with the Elastic Wave Equation: A Comparison of Traditional Numerical and Machine-Learning Methods Tamanna Saini, Brittany Erickson The seismic wave equation, a fundamental tool in modeling earthquakes, presents unique computational challenges, especially in accurately capturing wave propagation dynamics. Traditional numerical approaches, including finite difference methods (FDM... more Themes: Advanced Modeling Frameworks \| Applied Science Implementation \| Research Computing & Cyberinfrastructure
Group A Poster 307	CCB	Case Study: A Remote Sensing Approach to Site Selection for an Urban Deployment of Nodal Seismometers Delton Samuel, Heather Ford, Joseph Byrnes Assessing seismic hazards is critical for mitigating loss of life and property damage. Though seismometers themselves have become more compact and simpler to deploy, distributing them in urban environments presents a separate set of logistical... more Themes: Improving Observations and Closing Data Gaps
Group A Poster 019	Seismology	Evaluating earthquake early warning performance using "Did You Feel It?" Jessie Saunders, David Wald We examine responses to the U.S. Geological Survey’s “Did You Feel It?” (DYFI) survey and its companion earthquake early warning (EEW) questionnaire to assess the performance of the U.S. ShakeAlert EEW system directly from the alert recipients’... more Themes: Improving Observations and Closing Data Gaps \| Applied Science Implementation \| Outreach and Community Engagement
Group B Poster 024	Seismology	Beamforming Out-of-Network Earthquakes on Short DAS Cable Subsegments for Earthquake Early Warning Theresa Sawi, Jeff McGuire, Andrew Barbour, Clara Yoon, James Atterholt Earthquake Early Warning Systems operate by detecting, locating, and estimating the magnitudes of local and regional earthquakes, yet earthquakes outside of the seismic network footprint can often lead to erroneous location and magnitude estimates.... more Themes: Improving Observations and Closing Data Gaps \| Applied Science Implementation
Group A Poster 333	CEM	Extending the southernmost San Jacinto Fault: evidence for repeat Holocene motion along the Wienert Strand Katherine Scharer, Thomas Rockwell, Paula Figueiredo The 1987 M6.6 Superstition Hills earthquake ruptured 27 km of the Superstition Hills Fault and 4 km of the Wienert Fault. A southern continuation of the Wienert Fault is indicated by seismicity lineaments and geodetic studies, but geologic evidence... more Themes: Improving Observations and Closing Data Gaps
Group A Poster 111	Geology	Can neural nets leverage modern surface rupture data to improve paleoseismic magnitude estimates? Allison Schiffmaier, Yajaira De Haro, Alba Rodriguez Padilla The magnitudes of paleo-earthquakes are useful for hazard assessment. Traditionally, these magnitudes are estimated based on individual displacements from trench data or geomorphic offsets, or from rupture length extents, based on empirical scaling... more Themes: Education and Workforce Development
Group A Poster 031	Seismology	Correlation between fault fabric strength and creep suggests rock type as a controlling parameter Vera Schulte-Pelkum, Debi Kilb, Thorsten Becker Faults can exhibit creep at the surface and/or at depth along some fault sections and be locked in adjacent sections. While rock type is thought to be a parameter that controls this type of behavior, other parameters, such as fault geometry, have... more Themes: Improving Observations and Closing Data Gaps \| Developing Rheologies and Bridging Multi-Scales	21098, 22073, 24141, 25205
Group B Poster 136	Geology	Tectonic geomorphology and segmentation along the Calaveras fault zone from QUAKES-I and 3DEP topography Madeline Schwarz, Malinda Zuckerman, Celina Driver, Ramon Arrowsmith, Ryan Applegate, Robert Zinke, Andrea Donnellan, Curtis Padgett The Calaveras fault zone is characterized by distributed faulting which displays aseismic creep and hosts moderate to large earthquakes that threaten the San Francisco Bay Area. USGS 3DEP lidar collected in 2018 provides 1m bare earth topography of... more Themes: Improving Observations and Closing Data Gaps
Group A Poster 113	Geology	A GIS-based tool for assessing and visualizing well-informed uncertainty on mapped fault location Chelsea Scott, Raswanth Prasath, Ramon Arrowsmith, Christopher Madugo, Robert Givler, Stephen Thompson, Albert Kottke Accurately characterizing uncertainty in future earthquake surface rupture location is critical for fault displacement hazard analyses and for developing engineering solutions that mitigate coseismic risk to infrastructure. Geologists commonly... more Themes: Improving Predictive Analyses of Seismicity
Group A Poster 189	EFP	Evaluation of 10 Years of UCERF3-ETAS Next-day Forecasts Francesco Serafini, Maximilian Werner, Fabio Silva, Philip Maechling, Kevin Milner, Edward Field Earthquake forecasting models are routinely used for probabilistic seismic hazard analysis (PSHA) and operational earthquake forecasting (OEF) operations. Consequently, rigorously evaluating the consistency between forecasts and observations is... more Themes: Advanced Modeling Frameworks \| Improving Predictive Analyses of Seismicity \| Applied Science Implementation
Group A Poster 003	Seismology	Improving Iso-surface Depth (z1.0) Estimates for California Sites from Measured Profiles and Geology-Based Proxy Models for Ground Motion Studies Rashid Shams, Chukwuebuka Nweke, Tristan Buckreis, Scott Brandenberg, Jonathan Stewart Accurate estimates of subsurface shear wave velocity structure are essential for predicting ground motions and ensuring the resilience of lifeline infrastructure during earthquakes. The depth to a shear wave velocity of 1000 m/s (z1.0) is a key... more Themes: Advanced Modeling Frameworks \| Applied Science Implementation
Group B Poster 146	FARM	Low-Frequency Earthquakes Track the Evolution of a Captured Slab Fragment at the Mendocino Triple Junction David Shelly, Amanda Thomas, Kathryn Materna, Robert Skoumal The transition between the San Andreas Fault and the Cascadia subduction zone at the Mendocino triple junction is critical to understanding the tectonics and seismic hazard associated with these fault systems. Despite its significance, this complex... more Themes: Improving Observations and Closing Data Gaps \| Improving Predictive Analyses of Seismicity
Group A Poster 065	Geodesy	GNSS/InSAR/UAVSAR Integration for 3-D Deformation Field and fault creep rates in California Zheng-Kang Shen, Zhen Liu We have developed a method to integrate GNSS and InSAR data to produce a 3-D surface velocity field of the Earth [Shen and Liu, 2020, 2025]. The method includes the following key components: (a) An optimal interpolation approach to convert discrete... more Themes: Improving Observations and Closing Data Gaps \| Developing Rheologies and Bridging Multi-Scales \| Advanced Modeling Frameworks	25275
Group A Poster 147	FARM	How do the geometrical properties of seismicity relate to fault zone structure in California? Rajani Shrestha, Zachary Ross As a fault zone structure matures, seismicity becomes more localized around its principal slip surface. The decay of seismicity away from this surface provides an estimate of the effective damage zone width. This requires a detailed characterization... more Themes: Improving Observations and Closing Data Gaps
Group A Poster 239	GM	The SCEC Broadband Platform: Open-Source Software for Strong Ground Motion Simulation and Validation Fabio Silva, Sajan K C, Choonhan Youn, Philip Maechling, Chukwuebuka Nweke, Amit Chourasia, Ahmed Elbanna, Yehuda Ben-Zion The Southern California Earthquake Center (SCEC) Broadband Platform (BBP) is a collection of open-source scientific software modules that can simulate broadband (0-20+ Hz) ground motions for earthquakes at regional scales, compare simulation results... more Themes: Research Computing & Cyberinfrastructure	25052, 22091
Group A Poster 109	Geology	Impact of strong ground motion during the 1872 M7.4 Owens Valley Earthquake on alpine lakes in the Sierra Neveda Drake Singleton, Daniel Brothers, Boe Derosier, Rowan Azhderian Constructing paleoseismic records that span several earthquake cycles can be challenging in low-slip rate environments given long recurrence intervals and variable depositional conditions. Lacustrine systems (lakes) are continuous depositional... more Themes: Improving Observations and Closing Data Gaps
Group A Poster 011	Seismology	S/P Amplitude Ratios with Distributed Acoustic Sensing Robert Skoumal, James Atterholt, Andrew Barbour, Jeanne Hardebeck Distributed Acoustic Sensing (DAS), which transforms a fiber optic cable into an array of high frequency strainmeters, has the potential to help us characterize earthquakes with a dense sampling of measurements. While earthquake focal mechanisms are... more Themes: Improving Observations and Closing Data Gaps
Group B Poster 158	FARM	Impacts of Hydrothermal Alteration on Coseismic Slip and Fault Zone Properties at Ridgecrest, California Zachary Smith, Ruyu Yan, Josie Nevitt, William Griffith, Kathryn Materna, Roland Bürgmann, Francis Waligora The nucleation and propagation of earthquake ruptures and seismic waves are influenced by the properties of fault zone rocks and fluids. Hydrothermal alteration impacts both the frictional properties of fault surfaces and bulk elastic properties of... more Themes: Improving Observations and Closing Data Gaps \| Developing Rheologies and Bridging Multi-Scales \| Improving Predictive Analyses of Seismicity	23045
Group A Poster 027	Seismology	Source parameter estimation using the Coda Calibration Tool in the Korean Peninsula and Yellow Sea region (2.2 < Mw < 5.5) Minkyung Son, Kevin Mayeda, Jorge Roman-Nieves, Tae Seok Oh, Chang Soo Cho Estimating moment magnitude (Mw) and source spectra is critical for seismic hazard assessment and understanding earthquake physics, but stable results are often hindered by path and site effects, simplified assumptions, and limited bandwidth. We... more Themes: Improving Observations and Closing Data Gaps \| Applied Science Implementation \| Outreach and Community Engagement
Group B Poster 098	SDOT	Viscoplastic rheology for characterizing the bulk rheology of fault zone rocks Hiroki Sone, Mayukh Talukdar, Zirou Jin Fault zones host abundant fractures, from microscopic to macroscopic scale, created by stress concentrations associated with fault slips. Sliding and closing of these fractures could promote overall viscous behavior of fault zone rocks, which could... more Themes: Developing Rheologies and Bridging Multi-Scales	25308
Group A Poster 057	Seismology	Leveraging a Multi-Task Deep Learning Model to Enhance the California Statewide Earthquake Focal Mechanism Catalog Junhao Song, Weiqiang Zhu, Bo Rong Earthquake focal mechanisms, particularly those from smaller magnitude events that occur more frequently, can provide valuable information on subsurface fault geometries and stress fields. They have been better constrained with the development of... more Themes: Improving Observations and Closing Data Gaps
Group A Poster 041	Seismology	Insights into Seismic Site Response in San Fernando and San Gabriel Basin using Geomorphometric Parameters Ana Sotelo Romero, Rashid Shams, Chukwuebuka Nweke Seismic site response is a critical component of Ground Motion Models (GMMs). Recent studies have shown that sedimentary basins with complex subsurface geometries can significantly amplify ground shaking. However, many current GMMs represent site... more Themes: Advanced Modeling Frameworks
Talk Mon1400	CCB	Navigating Earthquake Information in the Age of AI: What Science Communicators Need to Know About News and AI Generated Earthquake Content Samantha Stanley, Claire Wardle, Sara McBride Studies suggest that damaging earthquakes lead to abundant news content and people turn to news sources for vital information during disasters. Among questions journalists seek to answer are: What happened and what should we expect in the immediate... more
Group A Poster 161	FARM	How Do Earthquakes Get Big? Will Steinhardt There are two main paths by which an earthquake can release a large amount accumulated strain on a fault: continuous, monotonic growth on a large, highly stressed patch, with a single acceleration and deacceleration phase, or by linking two more... more Themes: Improving Observations and Closing Data Gaps \| Developing Rheologies and Bridging Multi-Scales	25323
Group B Poster 022	Seismology	Ps Receiver Functions in the Presence of Anisotropy Ashley Stroup, Heather Ford The plate boundary between the North American plate and the Pacific plate consists of an expansive network of faults. One region critical for accommodating transform motion is the Walker Lane and Eastern California Shear Zone (WL-ECSZ), which... more Themes: Improving Observations and Closing Data Gaps \| Developing Rheologies and Bridging Multi-Scales
Group B Poster 306	RC	Deep Learning Approach for Rapid Tsunami Height and Arrival Time Prediction Elizabeth Su, Lingsen Meng Accurate and timely tsunami warnings are critical for mitigating loss of life and property. Traditional deterministic simulations of tsunami waveforms using numerical methods such as finite element models can provide detailed predictions but are... more Themes: Advanced Modeling Frameworks \| Improving Predictive Analyses of Seismicity \| Research Computing & Cyberinfrastructure
Group A Poster 329	CEM	Access to California Velocity Models Using SCEC UCVM v25.7 Mei-Hui Su, Philip Maechling, Scott Marshall, Clifford Thurber, Camilo Ignacio Pinilla Ramos, Claire Doody, Yehuda Ben-Zion, Hongjian Fang SCEC’s Unified Community Velocity Model (UCVM) software v25.7 now provides the research community with access to a broad collection of statewide California seismic velocity models. The SCEC UCVM is a software framework for accessing, comparing, and... more Themes: Research Computing & Cyberinfrastructure
Group A Poster 131	FARM	Causal Inference-Based Seismic Multi-Hazard Estimation for the 2025 Myanmar Earthquake Yifan Sun, Lingsen Meng, Zhang Yunjun, Yidi Wang, Yanchen Yang, Changyang Hu On March 28, 2025, a Magnitude 7.7 earthquake struck near Mandalay in central Myanmar. The earthquake happened along the Sagaing Fault, and the focal depth was approximately 10 km. It initiated extensive liquefaction, landslides, ground rupture, and... more Themes: Improving Predictive Analyses of Seismicity \| Applied Science Implementation
Group A Poster 181	FARM	Fast Dynamic Rupture and Earthquake Cycle Simulations with a Fourier Neural Operator–Based Framework Napat Tainpakdipat, Mohamed Abdelmeguid, Chunhui Zhao, Ahmed Elbanna Earthquake modeling captures the multiscale nature of fault processes, spanning spatial and temporal scales from slow aseismic slip to rapid dynamic rupture. Classical physics-based modeling, while accurate, is computationally expensive. To address... more Themes: Improving Observations and Closing Data Gaps \| Advanced Modeling Frameworks \| Improving Predictive Analyses of Seismicity
Group A Poster 175	FARM	Modeling the Evolution and Collective Frictional Behavior of Microscale Viscoelastic Contacts at High Sliding Speeds Yuval Tal Microscale contact mechanics governs the frictional and sliding behavior of natural surfaces, playing a key role in earthquake dynamics. Here, I explicitly model the collective frictional behavior and contact evolution of a microscopically rough... more Themes: Developing Rheologies and Bridging Multi-Scales \| Advanced Modeling Frameworks
Group A Poster 045	Seismology	Variations in mechanical properties control segmentation of oceanic transform faults Fengzhou Tan, Wenyuan Fan, Peter Shearer, Mark Behn, Jeff McGuire Oceanic transform faults exhibit concurrent slip behaviors, combining creep with characteristic earthquakes restricted to localized patches. At the Gofar transform fault on the East Pacific Rise, magnitude (M) 6 earthquakes are bounded by creeping... more Themes: Improving Observations and Closing Data Gaps
Group A Poster 077	Geodesy	Kinematics of Creep Events on the Imperial Fault M. Morow Tan, Kathryn Materna, Roger Bilham, Daniel Gittins The Imperial Fault (IF), located in Southern California’s Imperial Valley, is one of the fastest partially-creeping faults in California (Field et al., 2015). Deformation models suggest right-lateral slip rates of 20-35 mm/yr, showing the IF poses a... more Themes: Improving Observations and Closing Data Gaps \| Developing Rheologies and Bridging Multi-Scales	25103
Group B Poster 040	Seismology	Volcanic or tectonic origin? A case study of the 2025 Santorini-Amorgos sequence Xing Tan, William Ellsworth, Gregory Beroza, Stephanie Prejean, Jeremy Pesicek A key question during the intense 2025 Santorini-Amorgos sequence was whether the earthquakes were tectonic or volcanic. When seismicity in an area behaves unusually, both historical global analogs and modern high-precision analyses can help assess... more Themes: Improving Observations and Closing Data Gaps
Group A Poster 039	Seismology	Evaluation of Distributed Acoustic Sensing Phase Pick Quality and Performance for Operational Earthquake Monitoring Gabrielle Tepp, Nytica Artiaga, Ettore Biondi Over the past several years, distributed acoustic sensing (DAS) has been gaining use in seismological research and even seismic monitoring. The Southern California Seismic Network (SCSN) recently started incorporating DAS data into our routine... more Themes: Improving Observations and Closing Data Gaps
Group A Poster 327	CEM	Disseminating, improving and validating 3-D seismic velocity models for California Clifford Thurber I report on progress on three collaborative and inter-related efforts to disseminate, improve, and validate 3-D seismic velocity models for different regions of California, with support from SCEC and the USGS. The main focus is on the northern... more Themes: Improving Observations and Closing Data Gaps \| Research Computing & Cyberinfrastructure	25209, 25229
Talk Wed0800	FARM	Probing Rupture Dynamics and Ground Motion Signatures from Induced and Natural Earthquakes Elisa Tinti Understanding how ruptures initiate, propagate, and arrest is key to advancing physics-based ground motion simulations and improving seismic hazard assessment. In this presentation, I explore two complementary strategies that integrate observations... more Themes: Improving Observations and Closing Data Gaps \| Advanced Modeling Frameworks \| Improving Predictive Analyses of Seismicity
Group A Poster 247	GM	The Long and the Short of It: Duration in Earthquake Hazard Analysis Natasha Tiwari, Mario Chong Loo, Yongfei Wang, Scott Callaghan Traditional seismic hazard models emphasize amplitude-based metrics such as peak ground acceleration or response spectral acceleration, but often neglect an equally critical factor: ground motion duration. Duration strongly influences structural... more Themes: Improving Observations and Closing Data Gaps \| Advanced Modeling Frameworks \| Improving Predictive Analyses of Seismicity
Group A Poster 087	Geology	Complex Spatial-Temporal Rupture Patterns of Reverse Faults: The Dunstan Fault, Otago, New Zealand Alex Travers, Mark Stirling, Andrew Gorman , Jonathan Griffin, Dan Clark Tectonic geomorphology resulting from active reverse faulting is highly variable and often complex (E.g. 1988 Spitak earthquake rupture, 2016 Kaikoura rupture). Surface expressions can range from single, well-defined fault scarps to multiple... more
Group B Poster 036	Seismology	Distinguishing Spatial Variations in California Earthquake Dynamics Using a High- to Low-Frequency Spectral Ratio Ian Vandevert, Peter Shearer, Wenyuan Fan Earthquakes radiate varying amounts of high-frequency energy, reflecting differences in source dynamics, propagation and attenuation, and near-station site effects. Identifying source variations is essential for understanding spatial differences in... more Themes: Applied Science Implementation
Group B Poster 112	Geology	Automating Earthquake Field Data Parsing with Machine Learning: From Free-Text to Structured Observations Neeraja Vasa, Harini Pootheri, Edric Pauk, Tran Huynh, Luke Blair, Kate Thomas, Timothy Dawson Spatial data collected from the field after earthquakes is heterogeneous and requires extensive manual post-processing before publication. The field observation dataset from the 2014 Napa earthquake took five years to publish due to paper-based... more Themes: Improving Observations and Closing Data Gaps \| Research Computing & Cyberinfrastructure \| Education and Workforce Development
Group B Poster 072	Geodesy	Insights and Emerging Directions from Force-Balance Based Joint Inversion of GNSS and InSAR Mradula Vashishtha, William Holt, Jeonghyeop Kim GNSS (Global Navigation Satellite System) and InSAR (Interferometric Synthetic Aperture Radar) complement each other to provide more information on the spatial gradients of crustal motions. We jointly invert both GNSS and InSAR data for Southern... more Themes: Advanced Modeling Frameworks \| Applied Science Implementation	24177
Group A Poster 185	FARM	Modeling rupture propagation into creeping faults by thermal pressurisation Victor Vescu, Oliver Stephenson, Nadia Lapusta When a rupture reaches a region of slow slip, thermal pressurisation of pore fluids can enable rapid weakening and dynamic failure of the creeping zone (Noda and Lapusta, Nature, 2013). Previous results have shown that valid parameter combinations... more Themes: Advanced Modeling Frameworks \| Applied Science Implementation	25276
Group A Poster 173	FARM	Earthquake Shaking Scales with Rupture Complexity John Vidale, Hao Zhang The high-frequency energy radiation efficiency of large earthquakes plays a critical role in determining their destructiveness. The efficiency varies by more than an order of magnitude, yet the underlying controlling factors remain poorly understood... more Themes: Improving Observations and Closing Data Gaps \| Advanced Modeling Frameworks \| Improving Predictive Analyses of Seismicity	25253
Group A Poster 043	Seismology	3D San Fernando Valley and Los Angeles Basin Depth Map from Receiver Functions Guided by Gravity Measurements Valeria Villa, Robert Clayton, Patricia Persaud The San Fernando Valley and Los Angeles basin are urban sedimentary basins known to increase the seismic hazard of the surrounding metropolis of approximately 14 million people. In 2022 and 2023, two surveys of hundreds of seismic nodes were... more Themes: Improving Observations and Closing Data Gaps
Group B Poster 080	Geodesy	Refining interseismic velocity field around the Anza seismic gap with campaign GNSS data Cornelius Waldhausen, Yuri Fialko, Yehuda Bock The San Jacinto Fault (SJF), is the most seismically active fault in Southern California. Since 1890 there have been up to 10 earthquakes of magnitude 6 or greater that have ruptured various sections of the fault. One fault section near the town of... more Themes: Improving Observations and Closing Data Gaps

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.

Category:
Theme:
Author:
Title:
Abstract:
Format:
Poster Group

Meeting Abstracts

IMPORTANT DATES

ABOUT SCEC

QUICK LINKS

HEADQUARTERS AT