The 2007 Pisco, Peru, earthquake (M8.0): seismology and geodesy

Details The 2007 Pisco, Peru, earthquake (M8.0): seismology and geodesy The 2007 Pisco, Peru, earthquake (M8.0): seismology and geodesy

Mar 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009geoji.176..657b&link_type=abstract

Geophysical Journal International, Volume 176, Issue 52, pp. 657-669.

Astronomy and Astrophysics

Astronomy

11

Satellite Geodesy, Earthquake Dynamics, Subduction Zone Processes, South America

Scientific paper

We investigate the 2007 Pisco, Peru, earthquake (M8.0) using seismological and geodetic data. Analysis of teleseismic records indicates that the earthquake is characterized by a steadily increasing moment rate, with the maximum occurring between about 55 and 70s and the associated slip occurring about 40km south of the epicentre. We combine InSAR data from L-band (ALOS) and C-band (Envisat) satellites to produce a 3-D image of the ground displacements caused by the earthquake. Distributed slip inversions of the interferograms identify a single large patch of slip in the location of the maximum moment rate identified by seismology. Despite a clear spatial coincidence between the location of the coseismic slip and the anomalously high topography of the Paracas Peninsula, we find no evidence that the earthquake was directly responsible for motion on any upper plate faults.

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