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http://hdl.handle.net/2122/9732
Authors: | Merryman Boncori, J. P.* Pezzo, G.* |
Title: | Measuring the north-south coseismic displacement component with high-resolution multi aperture InSAR | Journal: | Terra Nova | Series/Report no.: | /27 (2015) | Publisher: | Wiley-Blackwell | Issue Date: | 2015 | DOI: | 10.1111/ter.12127 | Keywords: | Crustal Deformation Multi Aperture Interferometry MAI InSAR L'Aquila Earthquake Satellite geodesy |
Subject Classification: | 04. Solid Earth::04.03. Geodesy::04.03.01. Crustal deformations | Abstract: | Earthquake source inversions based on space-borne Synthetic Aperture Radar interferometry (InSAR) are used extensively. Typically, however, only the line-of-sight (LoS) surface displacement component is measured, which is mainly sensitive to the vertical and E–W deformations, although well-established methods also exist to estimate the flight-path component, which is highly sensitive to the N–S displacement. With high-resolution sensors, these techniques are particularly appealing, because accuracies in the order of 3 cm can be achieved, while retaining spatial resolutions between 45 m and a few km, depending on the required level of filtering. We discuss the application to COSMO-SkyMed SAR imagery of the Spectral Diversity or Multi Aperture Interferometry technique, presenting the first SAR flight-path displacement field associated with the Mw 6.3, 2009 L’Aquila event (central Apennines). Finally, we observe and characterize a previously unknown misregistration pattern. |
Appears in Collections: | Article published / in press |
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