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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.
| SCEC ID | Category | Title and Authors | SCEC Award |
|---|---|---|---|
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Group A Poster 221 |
GM |
ShakeOut Scenario 2.0: Dynamic Rupture Modeling of the M7.8 Earthquake on Southern San Andreas Fault and the Resulting Long-Period Ground Motion
Laura Grenot Jones, Clare Ip, Tomoka Ohmori, Ashley Seeman, Chunhui Zhao, Ahmed Elbanna Southern California sits atop the southern San Andreas Fault, which has not produced a major rupture in over 300 years and is capable of a magnitude ~7.8 earthquake. Anticipating how such an event would nucleate, propagate, and shake the Los Angeles... more Themes: Earthquake Scenarios for Hazard and Risk Assessment | Physics-Based Ground Motion Simulations & Validation |
26067
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Group A Poster 227 |
GM |
Planning for simulations of a scenario large aftershock in the Los Angeles Basin - ShakeOut2.0
Ruth Harris, Michael Barall, Katherine Scharer, Ahmed Elbanna, Kristen Chiama, Andreas Plesch, Alice-Agnes Gabriel, Chunhui Zhao, James Dolan, Craig Nicholson, Kim Olsen, Robert Graves, Jeanne Hardebeck, Karen Luttrell, Scott Callaghan, Mei-Hui Su, Kevin Milner, Morgan Page, Akash Bhatthal, Lucile Jones Observations of earthquakes over the centuries have taught us that large earthquakes are always followed by aftershocks. The ShakeOut Scenario 2.0 mainshock simulates a dynamically propagating large earthquake rupturing the southern San Andreas... more Themes: Earthquake Scenarios for Hazard and Risk Assessment |
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Group A Poster 099 |
Geology |
Holocene Earthquakes and Slip Rates within the San Gorgonio Pass and implications for the ShakeOut Scenario 2.0
Richard Heermance, Katherine Scharer, Bryan Castillo The San Gorgonio Pass (SGP) represents a structurally complex region of the southern San Andreas fault (SAF), where it diverges into multiple strands and has produced a region of low hills. Over the last decade, at least six published studies... more Themes: Advancing Community Earth Models for Hazard Analyses | Earthquake Scenarios for Hazard and Risk Assessment |
12209
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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
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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
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Group B Poster 188 |
CCB |
Updating and Simplifying Great ShakeOut Regional Webpages with Artificial Intelligence-Assisted Processes
Corey Rightmyer, Mark Benthien, Edward Salcido Great ShakeOut Earthquake Drills began in California in 2008 and have expanded to all U.S. states and territories, with participation worldwide coordinated by SCEC. In 2025, more than 19.3 million people participated nationwide, among more than 60... more Themes: Earthquake Scenarios for Hazard and Risk Assessment | Engaging Communities in Earthquake Preparedness |
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Group A Poster 225 |
GM |
Dynamic Rupture Simulations and 0-1 Hz Ground Motions of Two Leading Candidate Models for ShakeOut Scenario 2.0
Chunhui Zhao, Ahmed Elbanna, Kristen Chiama The southern San Andreas Fault has not hosted a major rupture in over 300 years and is widely regarded as capable of a magnitude ~7.8 earthquake. Anticipating how such an event would nucleate, propagate, and shake the Los Angeles region is central... more Themes: Earthquake Scenarios for Hazard and Risk Assessment | Physics-Based Ground Motion Simulations & Validation | Engaging Communities in Earthquake Preparedness |
26067
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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.
