Physics
Scientific paper
May 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008georl..3509308p&link_type=abstract
Geophysical Research Letters, Volume 35, Issue 9, CiteID L09308
Physics
7
Geodesy And Gravity: Seismic Cycle Related Deformations (6924, 7209, 7223, 7230), Geodesy And Gravity: Satellite Geodesy: Results (6929, 7215, 7230, 7240), Seismology: Earthquake Source Observations (1240)
Scientific paper
We combine interferometric synthetic aperture radar (InSAR) and teleseismic body waves to study the largest earthquake (M w 8.1) in a sequence of events on the subduction megathrust near Pisco, Peru. Our analysis includes some of the first InSAR data from the ALOS satellite and wide swath data from the Envisat satellite. The teleseismic data indicate the slip maximum occurred 60-90 seconds after the mainshock started. The InSAR data constrain the main slip patch to be about 70 km from the hypocenter, suggesting an extremely low rupture velocity (<1.5 km/s) or long slip rise time. No large earthquake has occurred in the 2007 rupture area since at least 1746 and possibly 1687, suggesting significant aseismic deformation in the area. The slip deficit apparently cannot be filled with rapid after-slip. In addition, the area where the Nazca Ridge is subducting appears to be either a seismic gap or a persistent area of aseismic slip.
Fielding Eric J.
Pritchard Mathew E.
No associations
LandOfFree
A study of the 2006 and 2007 earthquake sequence of Pisco, Peru, with InSAR and teleseismic data does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with A study of the 2006 and 2007 earthquake sequence of Pisco, Peru, with InSAR and teleseismic data, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A study of the 2006 and 2007 earthquake sequence of Pisco, Peru, with InSAR and teleseismic data will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1540251