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Open AccessFeature PaperArticle

Subsidence Evolution of the Firenze–Prato–Pistoia Plain (Central Italy) Combining PSI and GNSS Data

1
Department of Earth Sciences, University of Firenze, Via La Pira 4, 50121 Firenze, Italy
2
Istituto Geografico Militare, Via Battisti, 10/12, 50121 Firenze, Italy
*
Author to whom correspondence should be addressed.
Remote Sens. 2018, 10(7), 1146; https://doi.org/10.3390/rs10071146
Received: 1 June 2018 / Revised: 10 July 2018 / Accepted: 18 July 2018 / Published: 20 July 2018
(This article belongs to the Special Issue Radar Interferometry for Geohazards)
Subsidence phenomena, as well as landslides and floods, are one of the main geohazards affecting the Tuscany region (central Italy). The monitoring of related ground deformations plays a key role in their management to avoid problems for buildings and infrastructure. In this scenario, Earth observation offers a better solution in terms of costs and benefits than traditional techniques (e.g., GNSS (Global Navigation Satellite System) or levelling networks), especially for wide area applications. In this work, the subsidence-related ground motions in the Firenze–Prato–Pistoia plain were back-investigated to track the evolution of displacement from 2003 to 2017 by means of multi-interferometric analysis of ENVISAT and Sentinel-1 imagery combined with GNSS data. The resulting vertical deformation velocities are aligned to the European Terrestrial Reference System 89 (ETRS89) datum and can be considered real velocity of displacement. The vertical ground deformation maps derived by ENVISAT and Sentinel-1 data, corrected with the GNSS, show how the area affected by subsidence for the period 2003–2010 and the period 2014–2017 evolved. The differences between the two datasets in terms of the extension and velocity values were analysed and then associated with the geological setting of the basin and external factors, e.g., new greenhouses and nurseries. This analysis allowed for reconstructing the evolution of the subsidence for the area of interest showing an increment of ground deformation in the historic centre of Pistoia Town, a decrement of subsidence in the nursery area between Pistoia and Prato cities, and changes in the industrial sector close to Prato. View Full-Text
Keywords: subsidence; SAR; GNSS; PSI technique; Firenze–Prato–Pistoia plain subsidence; SAR; GNSS; PSI technique; Firenze–Prato–Pistoia plain
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MDPI and ACS Style

Del Soldato, M.; Farolfi, G.; Rosi, A.; Raspini, F.; Casagli, N. Subsidence Evolution of the Firenze–Prato–Pistoia Plain (Central Italy) Combining PSI and GNSS Data. Remote Sens. 2018, 10, 1146. https://doi.org/10.3390/rs10071146

AMA Style

Del Soldato M, Farolfi G, Rosi A, Raspini F, Casagli N. Subsidence Evolution of the Firenze–Prato–Pistoia Plain (Central Italy) Combining PSI and GNSS Data. Remote Sensing. 2018; 10(7):1146. https://doi.org/10.3390/rs10071146

Chicago/Turabian Style

Del Soldato, Matteo; Farolfi, Gregorio; Rosi, Ascanio; Raspini, Federico; Casagli, Nicola. 2018. "Subsidence Evolution of the Firenze–Prato–Pistoia Plain (Central Italy) Combining PSI and GNSS Data" Remote Sens. 10, no. 7: 1146. https://doi.org/10.3390/rs10071146

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