2025 SCEC CRM Workshop

Integrating friction into the Community Rheology Model

Date: September 6, 2025
Location: Palm Springs Hilton
Workshop Organizers: Alexis Ault (Utah State), Sylvain Barbot (USC), Caroline Seyler (USC)
SCEC Award: 25133

APPLICATION DUE: July 31, 2025
Attendance is limited to 30 in-person participants. The accepted participant list will be finalized by August 8, 2025. 

Overview

The Community Rheology Model (CRM) is a foundational Community Earth Model (CEM) but, to date, is underdeveloped because it does not include brittle rheology. On- and off-fault frictional properties within and above the seismogenic zone are critical components of quasi-static and dynamic rupture simulations and probabilistic earthquake hazard forecasts for the state of California. In this pre-SCEC Annual Meeting Workshop we aim to take an important step in filling this critical data gap by creating a FAIR compliant database or repository for georeferenced frictional properties over a range of conditions (e.g., lithology (on- and off-fault, host rock), depth, temperature, fluid conditions, fabric) from across California nested within the CEM framework.

We will bring together stakeholders from the experimental/rock mechanics, earthquake geology, geophysics, and computational communities including the next generation of SCEC researchers to (1) design a new frictional database, (2) pinpoint persistent unknowns in the context of the statewide mission that advance the CRM, and (3) strategize and advocate for the CRM, the importance of rheology in future SCEC science, and the intersectionality of SCEC and CRESCENT through rheology-based toolboxes and science.

We welcome applications from individuals involved in experimental/rock mechanics, earthquake geology, geophysics, and computational communities. We especially encourage participation from students, postdocs, and early career scientists. Capacity is limited to 30 in-person participants, selected based on their statement of interest and the potential of their contributions.

September 6, 2025

All times are Pacific Daylight Time (UTC-7). 

TimeAgenda ItemSpeaker
09:00 - 10:00

Coffee, breakfast, check-in

10:00 - 10:15Welcome and workshop goalsAlexis Ault, Sylvain Barbot, Caroline Seyler
10:15 - 10:30State of the CRM and CEM interfaceLaurent Montesi
Session 1: Building a Frictional Database for California
Moderator: Caroline Seyler
10:30 - 10:35IntroductionCaroline Seyler
10:35 - 10:55Science Talk: Impact of heterogeneity on fault friction/healingSrisharan Shreedharan
10:55 - 11:15Science Talk: Microphysical controls on frictional behaviorKristina Okamoto
11:15 - 11:45Breakout Group Brainstorm #1 – lithologies, data gaps, important considerations
11:45 - 12:05Group Read-outs and Compilation
12:05 - 13:00Lunch
13:00 - 13:30Breakout Group Brainstorm #2 – Database design and metadata
13:30 - 13:50Group Read-outs and Compilation
13:50 - 14:10Group Discussion

Session 2: SCEC Science – Outstanding Questions & Role of Rheology
Moderator: Sylvain Barbot

14:10 - 14:15IntroductionSylvain Barbot
14:15 - 14:35Science Talk: Fault rheology from field to labJosie Nevitt
14:35 - 14:55Science Talk: New methods in measuring brittle deformationMatěj Pěc
14:55 - 15:15Group Discussion
Lightning talk session + Coffee Break
15:15 - 15:30Coffee Break
15:30 - 16:00Lightning talks for rheology posters at SCEC
Session 3: Advocating for Rheology in the Future of SCEC
Moderator: Alexis Ault
16:00 - 16:05IntroductionAlexis Ault
16:05 - 16:30Science Talk: The future of rheology in SCEC and bridging SCEC and CRESCENTCailey Condit & Greg Hirth
16:30 - 16:45Group Discussion
Wrap-up and Next Steps
16:45 - 17:00Summary and closing remarksAlexis Ault, Sylvain Barbot,Caroline Seyler
17:00Workshop Adjourns

SCEC Activities Code of Conduct

The Statewide California Earthquake Center (SCEC) fosters a diverse and inclusive community where everyone feels safe, productive, and welcome. We expect all participants in SCEC-supported events to uphold this commitment by adhering to the SCEC Activities Code of Conduct.

SCEC Meetings and Workshops

The SCEC Annual Meeting brings together 400-500 participants worldwide to share breakthroughs, assess progress, and chart a collaborative path for earthquake science. All of the Center activities are presented, analyzed, and woven into a set of priorities for SCEC to pursue in the future.

Applications are currently closed

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