HR: 08:55h
AN: G51A-04    [PDF]
TI: Real-Time High-Rate Upgrades of SCIGN Sites
AU: * Bock, Y
EM: ybock@ucsd.edu
AF: Scripps Institution of Oceanography, IGPP 0225 9500 Gilman Drive, La Jolla, CA 92093-0225 United States
AB: We are in the process of upgrading sites of the Southern California Integrated GPS Network (SCIGN) to real-time (1 sec latency), high-rate (1 Hz) operations, and have completed the upgrades for more than 25 sites. The normal operation for most of the network includes 30-second sampling with data downloads every 24 hours. The purpose of the upgrades is twofold: (1) to provide data rates useful for measuring strong ground motions to complement traditional seismic instruments in the event of a medium to large earthquake and data latencies useful for seismic response, risk mitigation, and rapid earthquake model determinations based on coseismic displacements; (2) to provide real-time access to high-rate data to surveyors, GIS professionals, structural engineers, transportation engineers and others requiring access to precise positioning and navigation information, under the umbrella of the California Spatial Reference Center (CSRC). We report on the status of upgrades in three sub-networks, each with a distinct focus: (1) the Orange County Real Time Network in collaboration with the County of Orange Public Facilities and Resources Division, (2) the Parkfield region in collaboration with the USGS and UC Berkeley's NCEDC and (3) the Riverside County Real Time Network in collaboration with the Riverside County's Department of Transportation and Flood Control and Water Conservation District. In the latter sub-network, we are developing a real-time displacement meter that will integrate broadband seismic and GPS measurements. We highlight achievements and lessons learned from these upgrades and assess whether it is feasible and desirable for the Earthscope project to pursue a similar approach.
DE: 1242 Seismic deformations (7205)
DE: 1243 Space geodetic surveys
DE: 1294 Instruments and techniques
DE: 7205 Continental crust (1242)
DE: 7294 Instruments and techniques
SC: Geodesy [G]
MN: 2003 Fall Meeting