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

Melbourne, T. and Carmichael, I. and DeMets, C. and Hudnut, K. and Sanchez, O. and Stock, J. and Suarez, G. and Webb, F. (1997) The geodetic signature of the M8.0 Oct. 9, 1995, Jalisco subduction earthquake. Geophysical Research Letters, 24 (6). pp. 715-718. ISSN 0094-8276. https://resolver.caltech.edu/CaltechAUTHORS:20140414-135006071

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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.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://onlinelibrary.wiley.com/doi/10.1029/97GL00370/abstractPublisherArticle
http://dx.doi.org/10.1029/97GL00370DOIArticle
ORCID:
AuthorORCID
Hudnut, K.0000-0002-3168-4797
Stock, J.0000-0003-4816-7865
Additional Information:© 1997 American Geophysical Union. Manuscript Accepted: 14 Jan 1997. Manuscript Received: 4 Oct 1996. Paper number 97GL0037. The data were collected with the indispensable help of Dawnika Blatter, Phillip Bonstin, Jaime Dominguez, and Gerardo Perez-Ramos. The data were inverted using GINV and DISL programs written by Shawn Larsen. We thank the GIPSY-OASIS development team at JPL for GPS data-processing help. Supported by NSF grant EAR-9527810. California Institute of Technology Seismological Laboratory contribution #5795.
Group:Seismological Laboratory
Funders:
Funding AgencyGrant Number
NSFEAR-9527810
Other Numbering System:
Other Numbering System NameOther Numbering System ID
Caltech Division of Geological and Planetary Sciences5795
Issue or Number:6
Record Number:CaltechAUTHORS:20140414-135006071
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20140414-135006071
Official Citation:The geodetic signature of the M8.0 Oct. 9,1995, Jalisco Subduction Earthquake (pages 715–718) T. Melbourne, I. Carmichael, C. DeMets, K. Hudnut, O. Sanchez, J. Stock, G. Suarez and F. Webb DOI: 10.1029/97GL00370
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:44933
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:14 Apr 2014 21:12
Last Modified:03 Oct 2019 06:24

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