Transient fault slip in Guerrero, southern Mexico

The Guerrero region of southern Mexico has accumulated more than 5 m of relative plate motion since the last major earthquake. In early 1998, a continuous GPS site in Guerrero recorded a transient displacement. Modeling indicates that anomalous fault slip propagated from east to west along‐strike of...

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Bibliographic Details
Published in:Geophysical research letters 2001-10, Vol.28 (19), p.3753-3756
Main Authors: Lowry, Anthony R., Larson, Kristine M., Kostoglodov, Vladimir, Bilham, Roger
Format: Article
Language:English
Subjects:
Earth sciences
Earth, ocean, space
Exact sciences and technology
Tectonics. Structural geology. Plate tectonics
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Summary:The Guerrero region of southern Mexico has accumulated more than 5 m of relative plate motion since the last major earthquake. In early 1998, a continuous GPS site in Guerrero recorded a transient displacement. Modeling indicates that anomalous fault slip propagated from east to west along‐strike of the subduction megathrust. Campaign GPS and leveling data corroborate the model. The moment release was equivalent to an Mw≥6.5 earthquake. No M>5 earthquakes accompanied the event, indicating the frictional regime is velocity‐strengthening at the location of slip.
ISSN:0094-8276
1944-8007
DOI:10.1029/2001GL013238