SCEC Award Number 12092 View PDF
Proposal Category Collaborative Proposal (Integration and Theory)
Proposal Title Collaborative Proposal: Support for Integration of Automated Geodetic Transient Detection Effort into CSEP
Investigator(s)
Name Organization
Rowena Lohman Cornell University William Holt Stony Brook University
Other Participants 1
SCEC Priorities 2c, 5b SCEC Groups Geodesy, SDOT, EFP
Report Due Date 03/15/2013 Date Report Submitted N/A
Project Abstract
 The objectives of this work were to increase the number of automatic strain detectors currently in operation at CSEP, and to explore the sensitivity thresholds of existing algorithms. This has been a multi-year project where earlier incarnations involved the support for workshops where numerous participants (funded individually) compared the results of independent analyses of synthetic geodetic data generated by the PI and Duncan Agnew.
Intellectual Merit This work is critical to efforts aimed at establishing a system of automated detection of potential geodetic transients in Southern California. While the most obvious application of such a detection system is the characterization of seismic hazard, it also may have the side benefit of enabling better characterization of hydrologic signals.
Broader Impacts The applications to seismic hazard and anthropogenic deformations also constitute the broader impacts of this study.
Exemplary Figure Figure 1: Example dataset from Phase IIa (003923). A) Map view of the predicted horizontal deformation that occurred during the transient event (vectors). Triangles and associated ellipses indicate the location and deforming region found by each participant that analyzed this particular dataset. B) Vertical displacement time history at station with maximum displacement, showing the large magnitude of the signal (detectable by eye). C) Vertical displacement time history for a more challenging time series (001253), that resulted in zero detections by the group of participants.