HR: 09:45h
AN: G31A-08    [Abstracts]
TI: Posteseismic Deformation Near Yucca Mt., Nevada
AU: * Davis, J L
EM: jdavis@cfa.harvard.edu
AF: Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, United States
AU: Hill, E M
EM: ehill@cfa.harvard.edu
AF: Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, United States
AU: Wernicke, B P
EM: brian@gps.caltech.edu
AF: California Institute of Technology, Division of Geological and Planetary Sciences Mail Stop 100-23, Pasadena, CA 91125, United States
AU: Mahan, K
EM: kmahan@gps.caltech.edu
AF: California Institute of Technology, Division of Geological and Planetary Sciences Mail Stop 100-23, Pasadena, CA 91125, United States
AU: Bisnath, S
EM: sbisnath@yorku.ca
AF: York University, Department of Earth & Space Science & Engineering, Toronto, ON M3J 1P3, Canada
AB: Geodetically, postseismic deformation can be identified through the nonlinear curvature in the temporal time series of site position. The ability to identify postseismic deformation is therefore dependent upon geodetic accuracy, length of time series, the spatial pattern of the postseismic deformation, and the characteristics of the causative seismic event, including its distance from the GPS sites. In this talk, we discuss three possible sources of postseismic deformation in GPS time series acquired from sites in the Yucca Mountain region: the M_w 7.3 Landers event (28 Jun 1992), the M_s 5.6 Little Skull Mountain Earthquake (29 Jun 1992), and the M_w 7.1 Hector Mine event (16 Oct 1999). Yucca Mountain is in the far field (200 km or more) of the Landers and Hector Mine events, and in the near field of the Little Skull Mountain event. These differences, and the fact that the permanent BARGEN GPS network did not begin operation in this area until 1999, mean that the events are sensed quite differently by the Yucca Mountain GPS networks.
DE: 1207 Transient deformation (6924, 7230, 7240)
DE: 1236 Rheology of the lithosphere and mantle (7218, 8160)
DE: 1242 Seismic cycle related deformations (6924, 7209, 7223, 7230)
DE: 1243 Space geodetic surveys
SC: Geodesy [G]
MN: 2007 Joint Assembly