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2022 SCEC Stress Drop Workshop

Conveners: Rachel Abercrombie and Annemarie Baltay
Dates: September 10, 2022 10:00 - 17:00
Participants: 40 maximum (by invitation)
Location: Palm Springs Hilton
SCEC Award and Report: 22101

SUMMARY: To address SCEC’s research priority of understanding stress, we need a coordinated, community effort to develop better methods for estimating stress drop and determining its dependency on earthquake and material heterogeneities. In this context, the goals of this Community Stress Drop Validation Study TAG are to understand the nature and causes of discrepancies in earthquake stress drop, as well as where random and physical variability arises. We are focused on the 2019 Ridgecrest Earthquake sequence, and specifically a subset of 55 events. The current workshop will be in person and focused on comparison of recently submitted stress drop results, and investigation of uncertainties. We are planning for lots of discussion to encourage collaboration and method development.

We are considering an online option, but have limited resources (the focus will be on the in-person attendees). We will comply with SCEC directives regarding COVID-19 safety measures. Registration is free and includes lunch.

Pre-workshop Zoom: Thursday, September 1, 2022 9:30 am - 11 am Pacific // 12:30pm - 2pm Eastern // 6:30pm - 8pm Central Europe. (Zoom link will be distributed via the stress drop mailing list.)

We will use this zoom call to show preliminary comparison of results and try to capture the big picture on how different methods are similar or inconsistent. Together, we will also select a few events for particular focus on at the workshop. The aim of this pre-workshop call is for us all to be better prepared to discuss why our results are similar or different to those of others - something about the method, assumptions, magnitudes, stations used, etc? Please come prepared to discuss these differences at the workshop on September 10, maybe having performed some further analysis to compare actual data fits using your own, and others preferred parameters. 


09:00 - 10:00 Check In, coffee and Networking by the pool bar  
  Session 1: Welcome and Background  
10:00 - 10:15
Welcome, Introductions
Annemarie BaltayRachel Abercrombie and Shanna Chu
10:15 - 12:30 Method Lightning Talks All analysts
12:30 - 13:30 Lunch - box lunches available at the pool bar  
  Session 2: Comparison of Results  
13:30 - 13:45 Attenuation tomography and implications for source analysis TBD
13:45 - 14:00 Details of 6 focus events Rachel Abercrombie and Shanna Chu
14:00 - 15:30 Analysts present comparison details, tradeoffs, attenuation All - everyone invited to present for 5 minutes
15:30 - 16:00 Networking Break  
16:00 - 17:00 Session 3: Future Plans Discussion All
17:00 Workshop Adjourns  

Optional group dinner in Palm Springs at 7pm, TBA and not included.

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.