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Postseismic relaxation along the San Andreas Fault at Parkfield from continuous seismological observations

Brenguier, Florent, Michel Campillo, Céline Hadziioannou, Nikolai Shapiro, Robert Nadeau, and E. Larose (2008), Postseismic relaxation along the San Andreas Fault at Parkfield from continuous seismological observations, Science, 321, 1478-1481, doi:10.1126/science.1160943.

Abstract
Seismic velocity changes and nonvolcanic tremor activity in the Parkfield area in California reveal that large earthquakes induce long-term perturbations of crustal properties in the San Andreas fault zone. The 2003 San Simeon and 2004 Parkfield earthquakes both reduced seismic velocities that were measured from correlations of the ambient seismic noise and induced an increased nonvolcanic tremor activity along the San Andreas fault. After the Parkfield earthquake, velocity reduction and nonvolcanic tremor activity remained elevated for more than 3 years and decayed over time, similarly to afterslip derived from GPS (Global Positioning System) measurements. These observations suggest that the seismic velocity changes are related to co-seismic damage in the shallow layers and to deep co-seismic stress change and postseismic stress relaxation within the San Andreas fault zone.
Further information
BibTeX
@article{id1759,
  author = {Florent Brenguier and Michel Campillo and C{\'e}line Hadziioannou and Nikolai Shapiro and Robert Nadeau and E. Larose},
  journal = {Science},
  pages = {1478-1481},
  title = {{Postseismic relaxation along the San Andreas Fault at Parkfield from continuous seismological observations}},
  volume = {321},
  year = {2008},
  url = {http://www.sciencemag.org/content/321/5895/1478},
  doi = {10.1126/science.1160943},
}
EndNote
%0 Journal Article
%A Brenguier, Florent
%A Campillo, Michel
%A Hadziioannou, Céline
%A Shapiro, Nikolai
%A Nadeau, Robert
%A Larose, E.
%D 2008
%V 321
%J Science
%P 1478-1481
%T Postseismic relaxation along the San Andreas Fault at Parkfield from continuous seismological observations
%U http://www.sciencemag.org/content/321/5895/1478
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Printed 06. Dec 2019 02:15