Science Service System

Summary of Proposal GEO1775

TitleActive Tectonics and Non-Tectonic Surface Deformation of Central California from TerraSAR-X Interferograms
Investigator Bürgmann, Roland - University of California, Berkeley, Department of Earth and Planetary Science
Team Member
Bechor Ben-Dov, Noah - Massachusetts Institute of Technology, Earth, Atmospheric and Planetary Science
Dr. Fielding, Eric - JPL-Caltech, Science Division
Dr. Shirzaei, Manoochehr - Arizona State University, School of Earth and Space Exploration
Dr. Funning, Gareth - University of California, Riverside, Earth Sciences
Dr. Wdowinski, Shimon - Rosenstiel School of Marine and Atmospheric Science, Division of Marine Geology and Geophysics
Dr. Aly, Mohamed - Idaho State University, Department of Geosciences
Dr. Liu, Zhen - Affiliation: Jet Propulsion Laboratory, California Institute of Technology, Solid Earth Group
Dr. Floyd, Michael - Massachusetts Institute of Technology, Department of Earth, Atmospheric and Planetary Sciences
SummaryThis project aims to utilize advanced analysis of TerraSAR-X data to investigate the dynamics and interactions of solid Earth deformation processes, such as earthquakes and fault creep, and non-tectonic Earth surface processes, such as land subsidence and groundwater movements, in Central California, including the densely populated, urban region, the San Francisco Bay Area. Results from TSX data will be carefully compared and integrated with InSAR data from other spacecraft, including the ERS-1/2, Envisat, RADARSAT-1 and ALOS satellites. Building on prior work, the effort involves a rigorous analysis and monitoring effort of active surface deformation in the region. Ongoing deformation imaging reveals a number of natural hazards including elastic strain accumulation about seismogenic faults, active landsliding, land subsidence and rebound, and settling of unconsolidated sediments that are highly susceptible to liquefaction. Using a permanent scatterer InSAR analysis approach we are able to resolve the deformation at spatial resolutions of 10s of m to 100s of km and at a temporal resolution of a few weeks. Data from multiple spacecraft improves the temporal resolution and provides constraints on the 3D components of the observed motions. Central California and the San Francisco Bay Area is an ideal natural laboratory that exemplifies the connections between surface and interior processes. Funding for this work by the lead PI will come from a recently awarded NASA grant "InSAR Imaging Of Active Faulting, Land Subsidence and Landsliding in the San Francisco Bay Area, California" to Burgmann and Fielding.

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