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Evaluation of the SBAS InSAR service of the European space Agency's Geohazard Exploitation Platform (GEP)

AuthorsGalve, Jorge Pedro; Pérez-Peña, José Vicente; Azañón, José Miguel ; Closson, Damien; Caló, Fabiana; Reyes-Carmona, Cristina; Jabaloy, Antonio; Ruano, Patricia ; Mateos, Rosa M.; Notti, Davide; Herrera, Gerardo; Béjar-Pizarro, Marta; Monserrat, Oriol; Bally, Philippe
Issue Date11-Dec-2017
PublisherMultidisciplinary Digital Publishing Institute
CitationRemote Sensing 9 (12): 1291 (2017)
AbstractThe analysis of remote sensing data to assess geohazards is being improved by web-based platforms and collaborative projects, such as the Geohazard Exploitation Platform (GEP) of the European Space Agency (ESA). This paper presents the evaluation of a surface velocity map that is generated by this platform. The map was produced through an unsupervised Multi-temporal InSAR (MTI) analysis applying the Parallel-SBAS (P-SBAS) algorithm to 25 ENVISAT satellite images from the South of Spain that were acquired between 2003 and 2008. This analysis was carried out using a service implemented in the GEP called >SBAS InSAR>. Thanks to the map that was generated by the SBAS InSAR service, we identified processes not documented so far; provided new monitoring data in places affected by known ground instabilities; defined the area affected by these instabilities; and, studied a case where GEP could have been able to help in the forecast of a slope movement reactivation. This amply demonstrates the reliability and usefulness of the GEP, and shows how web-based platforms may enhance the capacity to identify, monitor, and assess hazards that are associated to geological processes.
Publisher version (URL)http://dx.doi.org/10.3390/rs9121291
Identifiersdoi: 10.3390/rs9121291
issn: 2072-4292
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