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Coseismic and postseismic vertical movements associated with the 1940 M7.1 Imperial Valley, California, earthquakeLeveling surveys conducted along two routes that cross the Imperial fault in southern California indicate spatially coherent elevation changes attributable to coseismic and postseismic effects of the 1940, M7.1 Imperial Valley earthquake. The 1931-1941 elevation changes are consistent with theoretical models of vertical deformation of an elastic half space for a finite length strike-slip fault, using fault parameters that are consistent with the observed surface offsets following the 1940 earthquake. The elevation changes suggest an earthquake scenario consisting of a large coeismic slip in the southern half of the fault which transferred stress to the northern part as well as to the Brawley fault to the northeast.
Document ID
19840054135
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Reilinger, R.
(Cornell University Ithaca, NY, United States)
Date Acquired
August 12, 2013
Publication Date
June 10, 1984
Publication Information
Publication: Journal of Geophysical Research
Volume: 89
ISSN: 0148-0227
Subject Category
Geophysics
Accession Number
84A36922
Funding Number(s)
CONTRACT_GRANT: NAS5-27232
CONTRACT_GRANT: USGS-14-08-0001-20585
Distribution Limits
Public
Copyright
Other

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