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Subsidence Detected by Multi-Pass Differential SAR Interferometry in the Cassino Plain (Central Italy): Joint Effect of Geological and Anthropogenic Factors?

1
Istituto Nazionale di Geofisica e Vulcanologia (INGV), Via di Vigna Murata, 605, 00143 Rome, Italy
2
Department of Civil and Mechanical Engineering (DICeM), University of Cassino and Southern Lazio, Via G. di Biasio, 43, 03043 Cassino, Italy
*
Author to whom correspondence should be addressed.
Remote Sens. 2014, 6(10), 9676-9690; https://doi.org/10.3390/rs6109676
Received: 31 July 2014 / Revised: 22 September 2014 / Accepted: 23 September 2014 / Published: 13 October 2014
In the present work, the Differential SAR Interferometry (DInSAR) technique has been applied to study the surface movements affecting the sedimentary basin of Cassino municipality. Two datasets of SAR images, provided by ERS 1-2 and Envisat missions, have been acquired from 1992 to 2010. Such datasets have been processed independently each other and with different techniques nevertheless providing compatible results. DInSAR data show a subsidence rate mostly located in the northeast side of the city, with a subsidence rate decreasing from about 5–6 mm/yr in the period 1992–2000 to about 1–2 mm/yr between 2004 and 2010, highlighting a progressive reduction of the phenomenon. Based on interferometric results and geological/geotechnical observations, the explanation of the detected movements allows to confirm the anthropogenic (surface effect due to building construction) and geological causes (thickness and characteristics of the compressible stratum). View Full-Text
Keywords: Differential SAR Interferometry; SBAS; IPTA; Cassino plain; subsidence Differential SAR Interferometry; SBAS; IPTA; Cassino plain; subsidence
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Polcari, M.; Albano, M.; Saroli, M.; Tolomei, C.; Lancia, M.; Moro, M.; Stramondo, S. Subsidence Detected by Multi-Pass Differential SAR Interferometry in the Cassino Plain (Central Italy): Joint Effect of Geological and Anthropogenic Factors? Remote Sens. 2014, 6, 9676-9690.

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