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- W2261505636 abstract "This research compares two time-series interferometric synthetic aperture radar InSAR methods, namely persistent scatterer SAR interferometry PS-InSAR and small baseline subset SBAS to retrieve the deformation signal from pixels with different scattering characteristics. These approaches are used to estimate the surface deformation in the L’Aquila region in Central Italy where an earthquake of magnitude Mw 6.3 occurred on 6 April 2009. Fourteen Environmental Satellite ENVISAT C-band Advanced Synthetic Aperture Radar ASAR images, covering the pre-seismic, co-seismic, and post-seismic period, are used for the study. Both the approaches effectively extract measurement pixels and show a similar deformation pattern in which the north-west and south-east regions with respect to the earthquake epicentre show movement in opposite directions. The analysis has revealed that the PS-InSAR method extracted more number of measurement points 21,103 pixels as compared to the SBAS method 4886 pixels. A comparison of velocity estimates shows that out of 833 common pixels in both the methods, about 62% 517 pixels have the mean velocity difference below 3 mm year−1 and nearly 66% pixels have difference below 5 mm year−1. It is concluded that StaMPS-based PS-InSAR method performs better in terms of extracting more number of measurement pixels and in the estimation of mean line of sight LOS velocity as compared to SBAS method." @default.
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- W2261505636 date "2016-02-05" @default.
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- W2261505636 title "A study on measuring surface deformation of the L’Aquila region using the StaMPS technique" @default.
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- W2261505636 doi "https://doi.org/10.1080/01431161.2015.1136449" @default.
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