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SCEC Workshop on Dynamic Rupture and Stress Conditions

Conveners: Ruth Harris and Michael Barall
Dates: December 3, 2021 (09:00-14:00 Pacific Time or UTC-8)
SCEC Award and Report: 21127

SUMMARY: The SCEC Dynamic Rupture Group is examining in detail the essential ingredients needed to understand earthquakes and produce viable large-earthquake source simulations. We focused on fault geometry at our November 2018 workshop. At our January 2020 workshop we focused on fault friction, and at our October 2020 workshop we focused on rock properties. Now we are having our fourth workshop in the series, and our focus is on stress conditions. We have invited speakers from both outside and inside our group to present ideas about stress conditions, what they look like in the Earth, and how our choices for stress conditions in our computational models affect rupture behavior and ground shaking.

Questions we hope to answer in this workshop include:

  1. How do our choices of stress conditions affect earthquake rupture behavior?
  2. How do our choices of stress conditions affect ground shaking?
  3. Are our stress conditions assumptions more or less important than our other ‘ingredients’, fault geometry, fault friction, and rock properties?

This workshop will be held as a Zoom meeting on December 3, 2021. The program will consist of some 10-15 minute presentations, with ample time for Q&A and discussion. The workshop closes with a moderated group discussion about SCEC Dynamic Rupture Group research activities. To promote active discussion, the workshop is limited to 60 participants and by invitation only. If you (or someone you know) can make contributions to answering the questions above, please contact the conveners.

FRIDAY, DECEMBER 3, 2021

09:00 - 09:25 Session 1: Workshop Overview  
09:00 - 09:15 Introduction to the Workshop Ruth Harris
09:15 - 09:25 Participant Introductions All
09:25 - 11:00 Session 2: Invited Presentations
15-minute live presentations, followed by 5-minute Q&A
 
09:25 - 09:40 SCEC Community Stress Model Jeanne Hardebeck
09:45 - 10:00 SCEC Stress Drop Validation Project Annemarie Baltay / Rachel Abercrombie
10:05 - 10:20 SEAS Verification Project and Spontaneous Initial Stress Brittany Erickson
10:20 - 10:40 Group Discussion: CSM, SDV, SEAS All
10:40 - 11:00 Break  
11:00 - 12:15 Session 3: Invited Presentations (continued)
15-minute live presentations, followed by 5-minute Q&A
 
11:00 - 11:15 Earthquake Cycle Simulations, Stress, and the Paleoseismic Record Dunyu Liu
11:20 - 11:35 Andrews & Ma (2016) Heterogeneous Stress Models Shuo Ma
11:40 - 11:55 The Ridgecrest Earthquake and Heterogeneous Initial Stress Arben Pitarka
12:00 - 12:15 Dynamic Rupture Code Validation Project Kyle Withers
12:15 - 14:00 Session 4: Group Discussion  
12:15 - 12:35 Group Discussion: Applying Heterogeneous Stress Conditions to Solve Earthquake Problems All
12:35 - 13:15 Break  
13:15 - 14:00 Group Discussion and Survey All

It is SCEC policy to foster harassment-free environments wherever our science is conducted. By accepting an invitation to participate in a SCEC-supported event, by email or online registration, participants agree to abide by the SCEC Activities Code of Conduct.

PARTICIPANTS