HR: 0800h
AN: G21B-1271    [Abstracts]
TI: GPS Installation Progress in the Northern California Region of the Plate Boundary Observatory Coyle, B., Basset, A., Williams, T., Enders, M., Feaux, K., Jackson, M.
AU: * Coyle, B
EM: coyle@unavco.org
AF: UNAVCO - Plate Boundary Observatory, Northern California Region, 1440 Regatta Blvd, Richmond, CA 94804 United States
AU: Basset, A
EM: basset@unavco.org
AF: UNAVCO - Plate Boundary Observatory, Northern California Region, 1440 Regatta Blvd, Richmond, CA 94804 United States
AU: Enders, M
EM: enders@unavco.org
AF: UNAVCO - Plate Boundary Observatory, Northern California Region, 1440 Regatta Blvd, Richmond, CA 94804 United States
AU: Williams, T
EM: williams@unavco.org
href="mtgabs.css"> AF: UNAVCO - Plate Boundary Observatory, Northern California Region, 1440 Regatta Blvd, Richmond, CA 94804 United States
AU: Feaux, K
EM: feaux@unavco.org
AF: UNAVCO - Plate Boundary Observatory, 6350 Nautilus Drive, Boulder, CO 80301 United States
AU: Jackson, M
EM: jackson@unavco.org
AF: UNAVCO - Plate Boundary Observatory, 6350 Nautilus Drive, Boulder, CO 80301 United States
AB: The Plate Boundary Observatory (PBO) is the geodetic component of the NSF funded EarthScope Project . The final PBO GPS network will comprise 875 continuously operating GPS stations installed throughout the Western US and Alaska. There are 435 stations planned for California with 229 of these in Northern California (NCA). This poster will present the past year's progress of GPS installations in NCA. At the end of the first year of the Project, PBO NCA installed 12 stations. During the second year, another 56 were installed for a total of 68 stations including 18 SDBM, and 50 DDBM. We have sited 128 stations, submitted 112 permit applications and received 73 permits. A particularly important statistic for planning our schedules is the time lag between reconnaissance and permit accepted; our average thus far is 137 days. We have been particularly successful locating stations on Caltrans Rights of Way with 20 Stations built, 3 sites permitted and 5 permits pending. Other land use partners include:  East Bay Regional Parks - 8 Stations built and 2 sites permitted,  Bureau of Land Management - 5 Stations built, 3 permits pending,  Water Municipalities - 4 Stations built, 3 sites permitted and 4 permits pending, and  Airports - 4 Stations built and 3 permits pending. Highlights from last year:  On September 28, 2004 a Mw 6.0 earthquake occurred on the San Andreas Fault seven miles southeast of the town of Parkfield, CA. Field crews from the Northern and Southern California offices of PBO began the site reconnaissance and permitting process the day after the earthquake and installation of the first Station was begun within 36 hours and completed the following day. In total, 5 Stations were installed by the first week of November.  On June 14, 2045 a Mw 7.1 earthquake occurred on the Gorda Plate, approximately 100 miles NW of Eureka. PBO stations, P158, P162, P169 and P170, recorded coseismic deformation associated with this event. We plan to have 127 stations built by the end of the current project year. In order to meet this goal we intend to focus our efforts on two areas, National Forests (NF) sites in the Coast Ranges, and sites in the area around Hollister and San Juan Bautista. We expect the recon-to-permit period to be somewhat longer for the NF sites, possibly up to one year, so we have already submitted applications for our sites in the Mendocino and Shasta-Trinity NF. This should enable us to begin these installations next summer. We will submit permit applications for the remaining NF by the end of next year. By end of the year we hope to have permit applications submitted for all 229 of our proposed sites, so we can then focus our efforts on installations and revisiting "problem" sites.
DE: 1207 Transient deformation (6924, 7230, 7240)
DE: 1209 Tectonic deformation (6924)
DE: 7230 Seismicity and tectonics (1207, 1217, 1240, 1242)
SC: Geodesy [G]
MN: Fall Meeting 2005