HR: 11:20h
AN: G22A-05 INVITED     [Abstracts]
TI: Improvements in regional crustal deformation monitoring using ultra high rate GPS and seismic data
AU: * Bock, Y
EM: ybock@ucsd.edu
AF: Scripps Institution of Oceanography, IGPP 0225 9500 Gilman Drive, La Jolla, CA 92093 United States
AU: Genrich, J
EM: jeff@gpsmail.ucsd.edu
AF: Scripps Institution of Oceanography, IGPP 0225 9500 Gilman Drive, La Jolla, CA 92093 United States
AU: Vernon, F
EM: vernon@epicenter.ucsd.edu
AF: Scripps Institution of Oceanography, IGPP 0225 9500 Gilman Drive, La Jolla, CA 92093 United States
AU: Offield, G
EM: offield@epicenter.ucsd.edu
AF: Scripps Institution of Oceanography, IGPP 0225 9500 Gilman Drive, La Jolla, CA 92093 United States
AB: The development of regional GPS and seismic networks has occurred with virtually no overlap, although both share many of the same geophysical objectives such as geologic fault detection, fault plane modeling during earthquakes, and real-time seismic hazards mitigation. Meanwhile, the detection spectrum of geodesy has pushed steadily towards measuring dynamic transients previously accessible only with seismology, as well as measuring transient deformation not detected by seismic methods such as slow earthquakes, fault creep, and transient fault slip. Recent developments in GPS instantaneous positioning with ultra high rate GPS sampling (10-20 Hz) further demonstrate certain weaknesses in the current operations of regional GPS networks. We describe efforts in southern California to collocate seismic and GPS sensors and to develop a GPS/seismic displacement meter at the software level, which would optimally combine real-time seismic and ultra-high-rate GPS network data, for the purposes of better quantifying fault slip and fault/earthquake parameter detection, and improved seismic early warning.
DE: 7223 Seismic hazard assessment and prediction
DE: 7294 Instruments and techniques
DE: 7205 Continental crust (1242)
DE: 1242 Seismic deformations (7205)
DE: 1294 Instruments and techniques
SC: Geodesy [G]
MN: 2004 AGU Fall Meeting