Subsidence mapping, characterization, and modeling: the ESA-GMES Terrafirma services

F. Raspini; S. Bianchini; C. Del Ventisette; S. Moretti; C. Loupasakis; D. Rozos; J. Duro; M. Garcia

doi:10.1117/12.2192199

19 June 2015 Subsidence mapping, characterization, and modeling: the ESA-GMES Terrafirma services

F. Raspini, S. Bianchini, C. Del Ventisette, S. Moretti, C. Loupasakis, D. Rozos, J. Duro, M. Garcia

Proceedings Volume 9535, Third International Conference on Remote Sensing and Geoinformation of the Environment (RSCy2015); 953516 (2015) https://doi.org/10.1117/12.2192199
Event: Third International Conference on Remote Sensing and Geoinformation of the Environment, 2015, Paphos, Cyprus

Abstract

Land subsidence is a common natural hazard striking extensive areas worldwide that can be triggered by geological and/or anthropogenic factors. In many cases, subsidence affects urbanized areas and causes remarkable economic loss. Adopted policies and solutions for land subsidence management can be various, but despite this variability, where mitigation methods have to be put into practice, the detailed mapping, characterization and simulation of subsidence have to precede their design and implementation. In the framework of the Terrafirma Project (www.terrafirma.eu.com), the exploitation of Persistent Scatterer Interferometry (PSI) for subsidence analysis has been promoted. Satellite interferometry, thanks to its wide spatial coverage and its millimeter accuracy, is ideally suited for the measurement of the spatial extent and magnitude of surface deformations associated with subsidence phenomena. Three validated case studies, where subsidence is caused by different factors, are presented here: the wide area of Rome (Italy), the Gioia Tauro plain (Italy) and the Kalochori village (Greece). These case studies have been selected with the aim of showing the main activities that must be covered and performed when dealing with geohazard investigations, i.e., mapping, monitoring and modeling. Particularly, data from ERS1/2, Envisat and Radarsat satellites have been exploited to map ground deformation in the area of Rome and to monitor the ground subsidence in the Gioia Tauro plain. Due to the large availability of geological and geotechnical data, the area of Kalochori village has been selected to model the land subsidence by applying Finite Element simulation. Results of the simulation have been validated with PSI techniques.

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F. Raspini, S. Bianchini, C. Del Ventisette, S. Moretti, C. Loupasakis, D. Rozos, J. Duro, and M. Garcia "Subsidence mapping, characterization, and modeling: the ESA-GMES Terrafirma services", Proc. SPIE 9535, Third International Conference on Remote Sensing and Geoinformation of the Environment (RSCy2015), 953516 (19 June 2015); https://doi.org/10.1117/12.2192199

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KEYWORDS

Data modeling

Interferometry

Satellites

Synthetic aperture radar

Water

Finite element methods

Landslides

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