The geodetic signature of the M8.0 Oct. 9, 1995, Jalisco subduction earthquake

Geophysical Research Letters
By: , and 

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Abstract

The October, 1995 Mw 8.0 Jalisco subduction earthquake has provided a thorough geodetic observation of the coseismic subduction process. An 11 station regional GPS network located directly onshore of the rupture demonstrates consistent vertical subsidence verified by tide gauge data and southwest-directed extension, with measured displacements reaching 1 meter. Unusually shallow and non-uniform faulting is required to explain the displacements. We determine that up to 5 meters of slip occurred within the upper 15 km of the thrust fault zone and 2 meters possibly as shallow as 8 km, and that slip was likely distributed in two main patches. The paucity of continental sediments in this subduction zone could be responsible for the anomalously shallow faulting.

Publication type Article
Publication Subtype Journal Article
Title The geodetic signature of the M8.0 Oct. 9, 1995, Jalisco subduction earthquake
Series title Geophysical Research Letters
DOI 10.1029/97GL00370
Volume 24
Issue 6
Year Published 1997
Language English
Publisher American Geophysical Union
Description 4 p.
First page 715
Last page 718
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