Science Service System

Summary of Proposal GEO2023

TitleArchive for time series of dynamic landsliding in the Berkeley Hills, California
Investigator Bürgmann, Roland - University of California, Berkeley, Department of Earth and Planetary Science
Team Member
Dr. Shirzaei, Manoochehr - Arizona State University, School of Earth and Space Exploration
Dr. Fielding, Eric - JPL-Caltech, Science Division
Dr. Ferretti, Alessandro - Tele-Rilevamento Europa, N/A
Dr Bonano, Manuela - Consiglio Nazionale delle Ricerche, IREA, N/A
SummaryThis project aims to utilize advanced analysis of TerraSAR-X data to investigate the dynamics and interactions of non-tectonic Earth surface processes such as landsliding, as well as solid Earth deformation processes such as earthquakes and fault creep, in the densely populated urban region of the San Francisco Bay Area, California. Results from TSX data will be carefully compared and integrated with InSAR data from other spacecraft, including the ERS-1/2, Envisat, RADARSAT-1, RADARSAT-2 and ALOS satellites, as well as complemented by a network of continuous GPS. 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. Using a permanent scatterer InSAR analysis approach we are able to resolve the deformation at spatial resolutions of several m to100s of km and at a temporal resolution of a few weeks. Newly available permanent and distributed scatterer methods such as SqueeSAR (Tele-Rilevamento Europa, Italy) now allow us to resolve deformation with centimeter scale precision. Data from multiple spacecraft improves the temporal resolution and provides constraints on the 3D components of the observed motions. Data from a comprehensive network of continuous GPS stations will complement the InSAR data set with continuous temporal resolution. 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 the Lawrence Berkeley National Laboratory's Earth Science Division "Berkeley Hills Landslide Project", as well as a NASA grant "InSAR Imaging of Active Faulting, Land Subsidence and Landsliding in the San Francisco Bay Area, California" awarded to Roland Burgmann and Eric Fielding.

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