HR: 11:05h
AN: G32A-04 [Abstracts]
TI: Satellite radar interferometry time series analysis of surface deformation for the metropolitan Los
Angeles and San Francisco, California, areas
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, 80124
Italy
AU: Lundgren, P
EM: paul@weed.jpl.nasa.gov
AF: Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA 91109
United States
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, 80124
Italy
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, 80124
Italy
AB:
The Los Angeles and San Francisco, California, metropolitan areas are tectonically active regions with surface deformations
that are a combination of fault related tectonics plus a variety of natural and anthropogenic signals, most notably aquifer
changes and oil extraction. We produce interferometric SAR (InSAR) time series analyses for these areas for 1993 into 2002
and determine space-time maps of surface deformation 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. Large seasonal oscillations of the Santa Ana aquifer observed in Southern California Integrated
GPS Network (SCIGN) data are accurately matched in the InSAR time series, moreover, correlations of the InSAR time series
with an annual sinusoid reveals amplitude and delay-time patterns that reflect the dynamics of the hydrologic system. Similar
patterns can be found for the San Francisco area. We will explore these features and their implications for detecting
earthquake related transient deformation.
DE: 8150 Plate boundary--general (3040)
DE: 1243 Space geodetic surveys
DE: 1294 Instruments and techniques
SC: Geodesy [G]
MN: 2004 AGU Fall Meeting