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SCEC Dynamic Rupture TAG Workshop - Investigating New Ideas in Earthquake Source Mechanics

Conveners: Ruth Harris and Michael Barall
Dates: January 12, 2023 (09:00-16:00 Pacific Time or UTC-8)
SCEC Award and Report: 22157

SUMMARY: The SCEC Dynamic Rupture Group has examined in detail the essential ingredients needed to produce viable large-earthquake source simulations, and has tested our computational methods, giving us confidence that we can understand how our assumptions affect our dynamic rupture computational results. Our next step is to learn more about cutting-edge new ideas in EQ source mechanics, including newly modeled earthquakes which have occurred, scenarios of future earthquakes, and novel findings about fault friction, stress, fault geometry, and rock properties.  We also have opportunities to better our modeling approaches.

Questions we hope to answer in this workshop include:

  1. What have we learned about earthquake physics from recent large earthquakes?
  2. Can simulations help us understand the likelihood of future large earthquake occurrence?
  3. Are there new computational methods we can use to help us do our work more easily?
  4. Are there guidelines for new scientists joining the field?
  5. What are related SCEC groups doing?

This workshop will be held as a Zoom meeting on January 12, 2023. The program will consist of some 10-15 minute presentations, lightning talks (1 slide, 1-minute), and ample time for Q&A and discussion. The workshop closes with a 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.

Presentation slides may be downloaded by clicking the links following the title and lightning talks are embedded below. PLEASE NOTE: Files and videos are the author’s property. They may contain unpublished or preliminary information and should only be used while viewing the talk.

All times below are Pacific Standard Time (PST or UTC-8).

  Session 1: Workshop Overview  
09:00 - 09:15 Introduction to the Workshop (PDF, 5.0MB) Ruth Harris
09:15 - 09:30 Participant Introductions All
  Session 2: New Science Ideas
Invited presentations, 15-min live talks including Q&A 
09:30 - 09:45 Thermal pore-fluid pressurization and its effect on ground motions (PDF, 2.9MB) Jagdish Vyas
09:50 - 10:05 Tsunamigenesis of strike-slip faults (PDF, 6.2MB) Shuo Ma
10:10 - 10:25 Non-linear radiation damping (PDF, 1.7MB) Michael Barall
10:30 - 10:45 Group Discussion All
10:50 - 11:05 Lightning Talks on New Science Ideas: 100-seconds each  
11:05 - 11:25 Break  
  Session 3: New Science Ideas (continued)
Invited presentations, 15-min live talks including Q&A
11:25 - 11:40 Lab experiments of fault zone evolution (PDF, 4.1MB) Michele Cooke
11:45 - 12:00 Pore fluid pressure and 3D megathrust earthquake dynamics (PDF, 3.4MB) Betsy Madden
12:05 - 12:20 Dynamic rupture on low-angle normal faults (PDF, 5.8MB) James Biemiller
12:25 - 12:40 Group Discussion All
12:45 - 13:30 Break  
  Session 4: Updates from Related SCEC Groups 
Invited presentations, 7-min live talks including Q&A
13:30 - 13:37 The Fault Displacement Hazard Initiative (FDHI) (PDF, 2.5MB) Yongfei Wang
13:42 - 13:49 The Simulation of Sequences of Earthquakes and Aseismic Slip (SEAS) Project (PDF, 2.5MB) Brittany Erickson
13:54 - 14:01 The Community Stress Drop Validation Study (PDF, 1.4MB) Shanna Chu
14:06 - 14:13 The Dynamic Rupture Code Validation Project Kyle Withers
14:18 - 14:33 Group Discussion All
14:38 - 14:53 Lightning Talks on New Science Ideas: 100-seconds each  
14:53 - 15:15 Break  
15:15 - 16:00 Group Discussion - Planning for our next steps All

Workshop Lightning Talks

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