SCEC Award Number 17160 View PDF
Proposal Category Individual Proposal (Data Gathering and Products)
Proposal Title Dynamic Triggering as a Probe of the Distribution of Stresses Required for Failure
Investigator(s)
Name Organization
Emily Brodsky University of California, Santa Cruz
Other Participants
SCEC Priorities 5d, 1d, 1c SCEC Groups SDOT, EFP, Seismology
Report Due Date 06/15/2018 Date Report Submitted 11/14/2018
Project Abstract
 One of the most pressing earthquake issues to face California is the potential for coordinated ruptures. Paleoseismic evidence and simulations both suggest that faults may synchronize their cycles and preferentially create supercycles. This scenario could be addressed through observation of the distribution of stresses from failure over a suite of faults. Here we propose to measure earthquake rate changes as a function of the dynamic stresses applied by seismic waves to infer this distribution. We will expand previous dynamic triggering work to current California data to assess the distribution of the stresses required for failure on faults in the region.
Intellectual Merit This work developed methods studying dynamic triggering in California, where the historic catalogs are particularly complex. The information gained has bearing on the distribution of stresses in the crust. We are now in a position to maximum the information gained by the about-to-be released template matching and machine learning catalogs for the region.
Broader Impacts This project supported in part 2 graduate students: Ricardo Garza-Giron and Andrea Rhodes. Ricardo Garza-Giron has recently proceeded to candidacy and Andrea Rhodes is graduating this year with a Masters.
Exemplary Figure Figure 2