|
|
 |
|||||||||||||||||
|
|||||||||||||||||
 |
|||||||||||||||||
| JOURNAL HOME | HELP | CONTACT PUBLISHER | SUBSCRIBE | ARCHIVE | SEARCH | TABLE OF CONTENTS |
1 Department of Geology and Geophysics, University of Wisconsin, Madison, Wisconsin 53706, USA
New continuous and differential global positioning system (GPS) measurements of recent slip rates and 30 yr alignment-array offsets from the central creeping segment of the San Andreas fault yield a maximum right-lateral slip rate of 25 ± 1 mm/yr. This slip rate is 20% slower than the 30 mm/yr slip rate accepted for this segment of the fault and 35% slower than the 39 mm/yr slip rate predicted between the Sierra Nevada–Great Valley block and the Pacific plate. New continuous GPS measurements between pairs of sites that flank the creeping segment at intersite distances of 1.0 km and 70 km give relative fault-parallel slip rates of 28 ± 2 and 30 ± 2 mm/yr, respectively. These observations indicate that right-lateral deformation rates increase with distance from the fault. Possible explanations for the gradient observed in the geodetic data are elastic strain accumulation along the creeping segment or significant distributed deformation on off-fault structures.
Key Words: San Andreas fault • global positioning system • creep • elastic strain • deformation
This article has been cited by other articles:
|
|
 |
|
  K.K. Bradbury, D.C. Barton, J.G. Solum, S.D. Draper, and J.P. Evans Mineralogic and textural analyses of drill cuttings from the San Andreas Fault Observatory at Depth (SAFOD) boreholes: Initial interpretations of fault zone composition and constraints on geologic models Geosphere, October 1, 2007; 3(5): 299 - 318. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 R. W. Simpson, M. Barall, J. Langbein, J. R. Murray, and M. J. Rymer San Andreas Fault Geometry in the Parkfield, California, Region Bulletin of the Seismological Society of America, September 1, 2006; 96(4B): S28 - S37. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
N. A. Toke, J R. Arrowsmith, J. J. Young, and C. J. Crosby Paleoseismic and Postseismic Observations of Surface Slip along the Parkfield Segment of the San Andreas Fault Bulletin of the Seismological Society of America, September 1, 2006; 96(4B): S221 - S238. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
S. J. Titus, C. DeMets, and B. Tikoff Thirty-Five-Year Creep Rates for the Creeping Segment of the San Andreas Fault and the Effects of the 2004 Parkfield Earthquake: Constraints from Alignment Arrays, Continuous Global Positioning System, and Creepmeters Bulletin of the Seismological Society of America, September 1, 2006; 96(4B): S250 - S268. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
J. Murray and J. Langbein Slip on the San Andreas Fault at Parkfield, California, over Two Earthquake Cycles, and the Implications for Seismic Hazard Bulletin of the Seismological Society of America, September 1, 2006; 96(4B): S283 - S303. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
N. A. Toke and J R. Arrowsmith Reassessment of a Slip Budget along the Parkfield Segment of the San Andreas Fault Bulletin of the Seismological Society of America, September 1, 2006; 96(4B): S339 - S348. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
G. R. Noriega, J R. Arrowsmith, L. B. Grant, and J. J. Young Stream Channel Offset and Late Holocene Slip Rate of the San Andreas Fault at the Van Matre Ranch Site, Carrizo Plain, California Bulletin of the Seismological Society of America, February 1, 2006; 96(1): 33 - 47. [Abstract] [Full Text] [PDF]
|
|
| JOURNAL HOME | HELP | CONTACT PUBLISHER | SUBSCRIBE | ARCHIVE | SEARCH | TABLE OF CONTENTS |
