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Postseismic deformation following the 1989 (M = 7.1) Loma Prieta, California, earthquake

Journal of Geophysical Research

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Abstract

Postseismic deformation along a 90-km profile bisecting the projected surface trace of the coseismic rupture of the 1989 Loma Prieta earthquake has been monitored by frequent GPS surveys for 3.3 years following the earthquake. In addition to the expected deformation associated with secular strain accumulation on the San Andreas and Calaveras Faults, deformation associated with postseismic readjustment has been detected. Most of that deformation can be attributed to 1.5 m right-lateral and 0.9 m reverse postseismic slip on a 5-km-wide downdip extension of the Loma Prieta rupture. In addition, there seems to be a 0.1 m postseismic collapse of the Loma Prieta rupture zone in the direction perpendicular to the plane of the rupture. -from Authors

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Postseismic deformation following the 1989 (M = 7.1) Loma Prieta, California, earthquake
Series title:
Journal of Geophysical Research
Volume
99
Issue:
B7
Year Published:
1994
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article