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SCEC Workshop for Advancing Simulations of Sequences of Earthquakes and Aseismic Slip (SEAS)

Conveners: Brittany Erickson and Junle Jiang
Date: January 9, 2020
Location: Kellogg West Conference Center, Pomona, CA
SCEC Award and Report: 19110

SUMMARY: Our group ​is working to advance ​computational methods for simulating Sequences of Earthquakes and Aseismic Slip (SEAS) by conducting a suite of code verification exercises. ​In SEAS models, the goal is to capture the interplay of aseismic fault slip—that ultimately lead to earthquake nucleation—and dynamic earthquake ruptures themselves, in an effort to understand which physical factors control the full range of observables such as aseismic deformation, earthquake initiation locations, ground shaking during dynamic rupture, recurrence times and magnitudes of earthquakes.

The goal of this workshop is to share some recent progress in SEAS modeling and discuss the results of two new code verification benchmarks, BP3 and BP4, which focus on fully dynamic 2D and quasidynamic 3D problems, respectively. We will also discuss our future benchmark efforts; for example, to explore the effects of fault geometry, free surface, or heterogeneous friction, and plan for group publications to promote our results to the broader community.

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 They may contain unpublished or preliminary information and should only be used while viewing the talk.


08:30 - 09:00 Workshop Check-In  
  Session 1: Overview of SEAS Group and Progress in SEAS Science  
09:00 - 09:10 Welcome and Overview of Workshop Objectives (PDF, 521KB) Brittany Erickson / Junle Jiang
09:10 - 09:30 Slip complexity on faults with heterogeneous friction Sohom Ray (Dalhousie)
09:30 - 09:50 Anatomy of the Main Himalayan Thrust: Bridging long-term tectonics and short-term seismicity (PDF, 8.5MB) Luca Dal Zilio
09:50 - 10:10 Linked subduction, dynamic earthquake rupture, and tsunami modeling (PDF, 2.7MB) Betsy Madden (Brasilia)
10:10 - 10:30 Discussion All
10:30 - 10:40 Break  
  Session 2: Community Code Comparison and Verification Exercises  
10:40 - 11:00 Comparing results of diverse earthquake simulators with one another and with earthquake data Terry Tullis
11:00 - 11:30 Review of SEAS benchmarks BP1 and BP2 results (PDF, 5.2MB) Brittany Erickson / Junle Jiang
11:30 - 11:50 Code verification using the method of manufactured solutions (PDF, 110KB) Jeremy Kozdon
11:50 - 12:00 Discussion All
12:00 - 13:00 Lunch  
  Session 3: SEAS Benchmark BP3 - Inertial effect  
13:00 - 14:10 Benchmark results and discussion (PDF, 5.2MB) Brittany Erickson
14:10 - 14:20 Break  
  Session 4: SEAS Benchmark BP4 - 3D effect  
14:20 - 16:00 Benchmark results and discussion (PDF, 5.4MB) Junle Jiang
15:50 - 16:00 Break  
  Session 5: Future SEAS Group Activities  
16:00 - 17:00 Future benchmarks and publications (PDF, 194KB) Brittany Erickson / Junle Jiang
17:00 - 17:30 Discussion All
17:30 Workshop Adjourns  


*Remote Participants

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