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Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/6887

Authors: Stramondo, S.*
Chini, M.*
Bignami, C.*
Salvi, S.*
Zoffoli, S.*
Boschi, E.*
Title: Ground Deformation Imagery of the 12 May 2008 Sichuan Earthquake
Title of journal: EOS, TRANSACTIONS AMERICAN GEOPHYSICAL UNION
Series/Report no.: 37/89 (2008)
Issue Date: 9-Sep-2008
DOI: 10.1029/2008EO370002
Keywords: Sythetic Aperture Radar
interferometry
earthquake
coseismic deformation
change detection
Abstract: The magnitude Mw = 7.8 earthquake that struck China's Sichuan region on 12 May 2008 (Figure 1a) has been imaged by the Italian Space Agency's (ASI) Constellation of Small Satellites for the Mediterranean Basin Observation (COSMO-SkyMed radar Earth observation satellites. Five images were available—two preseismic spotlight mode images and three strip-map mode images, two of which are preseismic and one of which is postseismic. We used two strip-map images (acquired 1 month prior to and 3 days after the earthquake) to generate the first ever X-band (i.e., microwave frequency domain, corresponding to about 3-centimeter wavelength) coseismic interferogram, which clearly shows part of the strong ground deformation caused by the fault dislocation. We also performed a change detection analysis of the same data that highlighted several changes in the radar response, presumably due to strong seismic damage, as far as 80 kilometers away from the epicenter.
Appears in Collections:04.07.07. Tectonics
04.06.04. Ground motion
Papers Published / Papers in press

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