Authors
Gilles Peltzer, Paul Rosen, Francois Rogez, Ken Hudnut
Publication date
1996/8/30
Journal
Science
Volume
273
Issue
5279
Pages
1202-1204
Publisher
American Association for the Advancement of Science
Description
Near-field strain induced by large crustal earthquakes results in changes in pore fluid pressure that dissipate with time and produce surface deformation. Synthetic aperture radar (SAR) interferometry revealed several centimeters of postseismic uplift in pull-apart structures and subsidence in a compressive jog along the Landers, California, 1992 earthquake surface rupture, with a relaxation time of 270 ± 45 days. Such a postseismic rebound may be explained by the transition of the Poisson's ratio of the deformed volumes of rock from undrained to drained conditions as pore fluid flow allows pore pressure to return to hydrostatic equilibrium.
Total citations
Scholar articles
G Peltzer, P Rosen, F Rogez, K Hudnut - Science, 1996