SCEC Award Number 20135
Proposal Category Collaborative Proposal (Integration and Theory)
Proposal Title Crustal Stress Models for Cajon Pass with Epistemic Uncertainty and Implications Earthquake Gate Behavior
Investigator(s)
Name Organization
Karen Luttrell Louisiana State University Bridget Smith-Konter University of Hawaii at Manoa
Other Participants Elliott Helgans (LSU)
Liliane Burkhard (UH)
Undergraduate Student Researcher (LSU)
SCEC Priorities 1c, 1d, 1e SCEC Groups SDOT, CXM, SAFS
Report Due Date 03/15/2021 Date Report Submitted No report submitted
Project Abstract
 INTERIM REPORT: The goal of this research is to broaden the utility of recently developed forward models of stress state in Cajon Pass by improving the characterization of both model uncertainty and fault specific slip behavior. The transition to fully-remote teaching and research activities in 2020 resulted in substantial delays in both analysis and publication activities. We have been granted a one year no cost extension of the award, and present here a progress report on each of the four tasks from our proposed work plan.
Intellectual Merit These findings directly support the objectives of the Community Models (CXM) and Stress and Deformation over Time (SDOT) interdisciplinary working groups to answer the basic earthquake science question of “How are faults loaded across temporal and spatial scales?” by constraining how absolute stress and stressing rate vary laterally and with depth on faults, and by evaluating the time dependence of stress transfer on faults.
Broader Impacts This project has supported the training of one LSU graduate student and one UH graduate student to conduct research and gain valuable experience in computational modeling, critical thinking skills, and scientific communication. This research was presented at the 2020 SCEC Annual Meeting, the 2020 SCEC Cajon Pass Earthquake Gate Workshop, and is being prepared for publication in a peer reviewed journal.
Exemplary Figure INTERIM REPORT: