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Remote Sens. 2015, 7(12), 16004-16023; doi:10.3390/rs71215812

InSAR Time Series Analysis of Natural and Anthropogenic Coastal Plain Subsidence: The Case of Sibari (Southern Italy)

1
Department of Biology, Ecology and Earth Sciences, University of Calabria, Via P. Bucci, cubo 15B, 87036 Arcavacata di Rende (Cs), Italy
2
Istituto Nazionale di Geofisica e Vulcanologia (INGV), Via di Vigna Murata, 605, 00143 Rome, Italy
*
Author to whom correspondence should be addressed.
Academic Editors: Roberto Tomas, Richard Gloaguen and Prasad S. Thenkabail
Received: 25 August 2015 / Revised: 13 November 2015 / Accepted: 17 November 2015 / Published: 30 November 2015
(This article belongs to the Special Issue Earth Observations for Geohazards)
View Full-Text   |   Download PDF [4511 KB, uploaded 30 November 2015]   |  

Abstract

We applied the Small Baseline Subset multi-temporal InSAR technique (SBAS) to two SAR datasets acquired from 2003 up to 2013 by Envisat (ESA, European Space Agency) and COSMO-SkyMed (ASI, Italian Space Agency) satellites to investigate spatial and temporal patterns of land subsidence in the Sibari Plain (Southern Italy). Subsidence processes (up to ~20 mm/yr) were investigated comparing geological, hydrogeological, and land use information with interferometric results. We suppose a correlation between subsidence and thickness of the Plio-Quaternary succession suggesting an active role of the isostatic compensation. Furthermore, the active back thrusting in the Corigliano Gulf could trigger a flexural subsidence mechanism even if fault activity and earthquakes do not seem play a role in the present subsidence. In this context, the compaction of Holocene deposits contributes to ground deformation. Despite the rapid urbanization of the area in the last 50 years, we do not consider the intensive groundwater pumping and related water table drop as the main triggering cause of subsidence phenomena, in disagreement with some previous publications. Our interpretation for the deformation fields related to natural and anthropogenic factors would be a comprehensive and exhaustive justification to the complexity of subsidence processes in the Sibari Plain. View Full-Text
Keywords: SBAS-InSAR; Sibari Plain; subsidence; geology; anthropic processes SBAS-InSAR; Sibari Plain; subsidence; geology; anthropic processes
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Cianflone, G.; Tolomei, C.; Brunori, C.A.; Dominici, R. InSAR Time Series Analysis of Natural and Anthropogenic Coastal Plain Subsidence: The Case of Sibari (Southern Italy). Remote Sens. 2015, 7, 16004-16023.

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