HR: 0800h
AN: G51C-0842    [Abstracts]
TI: InSAR time series analysis of surface deformation for the San Francisco Bay Area and central San Andreas Fault, California
AU: * Lundgren, P R
EM: paul@weed.jpl.nasa.gov
AF: Jet Propulsion Laboratory, MS 300-233, 4800 Oak Grove Drive, Pasadena, CA 91109 United States
AU: Casu, F
EM: casu.f@irea.cnr.it
AF: Istituto per il Rilevamento Elettromagnetico dell'Ambiente, Consiglio Nazionale delle Ricerche, Via Diocleziano, 328, Napoli, I-80124 Italy
AU: Manzo, M
EM: manzo.mr@irea.cnr.it
AF: Istituto per il Rilevamento Elettromagnetico dell'Ambiente, Consiglio Nazionale delle Ricerche, Via Diocleziano, 328, Napoli, I-80124 Italy
AU: Lanari, R
EM: lanari.r@irea.cnr.it
AF: Istituto per il Rilevamento Elettromagnetico dell'Ambiente, Consiglio Nazionale delle Ricerche, Via Diocleziano, 328, Napoli, I-80124 Italy
AB: The San Francisco Bay Area and central San Andreas fault present opportunities to understand the limits in applying synthetic aperture radar (SAR) interferometry (InSAR) to study tectonic/fault related deformation. In particular, we wish to address the applicability of InSAR for detecting transient fault related deformation using the approach of InSAR time series analysis. We use the European Space Agency's ERS-1 and ERS-2 SAR data from the WInSAR archive. We produce InSAR time series relative deformation maps for these areas for the 1993 to 2002 time period at each ERS epoch for which we have data. The results are space-time deformation products that can be exploited to view not only the mean or smoothly varying long-term surface motion, but also its time varying patterns. As with our previous work in the Los Angeles area, we find areas subject to time varying surface movement most likely associated with hydrological sources or areas of local subsidence. However, we are also able to detect transient fault creep and distributed plate boundary deformation. As an example of the former, the 1996 creep event on the southern Hayward fault is resolved and found to agree with available in situ creep meter measurements. We will explore the feasibility of using the spatial information in the InSAR time series to model fault creep along the Hayward and central San Andreas fault systems.
DE: 1207 Transient deformation (6924, 7230, 7240)
DE: 1209 Tectonic deformation (6924)
DE: 1211 Non-tectonic deformation
DE: 1240 Satellite geodesy: results (6929, 7215, 7230, 7240)
SC: Geodesy [G]
MN: Fall Meeting 2005