SCEC Award Number 13077 View PDF
Proposal Category Workshop Proposal
Proposal Title Community Geodetic Workshop
Investigator(s)
Name Organization
Jessica Murray United States Geological Survey David Sandwell University of California, San Diego Rowena Lohman Cornell University
Other Participants
SCEC Priorities 1, 5, 2 SCEC Groups Geodesy, Transient Detection, SDOT
Report Due Date 06/29/2013 Date Report Submitted N/A
Project Abstract
 The Community Geodetic Model will bring together the complimentary features of GPS and InSAR data to produce spatially and temporally dense time series of ongoing deformation in southern California. The resulting data product will provide input for a range of SCEC4 research activities. The CGM effort will leverage the continued expansion of GPS coverage, pending launch of new SAR satellites, recent advances in InSAR time series analysis, and ongoing advances in noise assessment and mitigation to develop methodology for generating a combined GPS/InSAR time series product. In May 2013 we conducted a workshop at which experts in geodetic data analysis as well as potential users of the CGM developed the framework for the envisioned data product and outlined the steps required to realize this goal. The workshop report summarizes the outcome of this meeting.
Intellectual Merit This work directly addresses the SCEC4 objective of developing a Community Geodetic Model that brings together the complementary features of GPS and InSAR data to provide a unified measure of time-varying deformation. The CGM will support the next generation modeling of interseismic strain accumulation, postseismic effects over multiple time-scales, lithospheric rheology, and transient deformation, as well as the development of a Community Stress Model, that are high priority activities for SCEC4.
Broader Impacts In addition to providing input for SCEC research activities, the CGM will be a useful educational resource by enabling students to experiment with raw deformation time series and explore derived quantities such as secular rates, earthquake deformation, and seasonal signals. The CGM has the potential to benefit society through its use in transient deformation monitoring and improving deformation models for seismic hazard assessment.
Exemplary Figure (Workshop report does not contain figures.)