Journal
SENSORS
Volume 20, Issue 10, Pages -Publisher
MDPI
DOI: 10.3390/s20102749
Keywords
Sentinel-1; COSMO-SkyMed; Pistoia; land subsidence; vulnerability; fragility curves
Funding
- Spanish Ministry of Economy, Industry and Competitiveness (MINECO)
- State Agency of Research (AEI)
- European Funds for Regional Development (FEDER) [ESP2013-47780-C2-2-R, TEC2017-85244-C2-1-P, TIN2014-55413-C2-2-P]
- Spanish Ministry of Education, Culture and Sport [EEBB-I-18-13014, PRX17/00439, PRX19/00065]
- Tuscany Region
- European Union's Horizon 2020 research and innovation program [820852]
- PRIMA programme, project RESERVOIR [1924]
- European Union
- [BES-2014-069076]
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The launch of the medium resolution Synthetic Aperture Radar (SAR) Sentinel-1 constellation in 2014 has allowed public and private organizations to introduce SAR interferometry (InSAR) products as a valuable option in their monitoring systems. The massive stacks of displacement data resulting from the processing of large C-B and radar images can be used to highlight temporal and spatial deformation anomalies, and their detailed analysis and postprocessing to generate operative products for final users. In this work, the wide-area mapping capability of Sentinel-1 was used in synergy with the COSMO-SkyMed high resolution SAR data to characterize ground subsidence affecting the urban fabric of the city of Pistoia (Tuscany Region, central Italy). Line of sight velocities were decomposed on vertical and E-W components, observing slight horizontal movements towards the center of the subsidence area. Vertical displacements and damage field surveys allowed for the calculation of the probability of damage depending on the displacement velocity by means of fragility curves. Finally, these data were translated to damage probability and potential loss maps. These products are useful for urban planning and geohazard management, focusing on the identification of the most hazardous areas on which to concentrate efforts and resources.
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