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Monitoring continuous subsidence in the Costa del Sol (Malaga province, southern Spanish coast) using ERS-1/2, Envisat, and Sentinel-1A/B SAR interferometry

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Author: Ruiz-Armenteros, A.M. · Lazecky, M. · Ruiz-Constan, A. · Bakon, M. · Delgado, J. manuel · Sousa, J.J. · Galindo-Zaldivar, J. · Galdeano, C.S. de · Caro-Cuenca, M. · Martos-Rosillo, S. · Jimenez-Gavilan, P. · Perissin, D.
Type:article
Date:2018
Publisher: Elsevier B.V.
Source:Procedia Computer Science, International Conference on ENTERprise Information Systems / International Conference on Project MANagement / International Conference on Health and Social Care Information Systems and Technologies, CENTERIS/ProjMAN/HCist 2018, 21 November 2018 through 23 November 2018, 354-361
Identifier: 862577
Keywords: Deformation · Envidat · ERS-1/2 · InSAR · Malaga · SAR · Sentinel-1 · Torremolinos · Aquifers · Deformation · Groundwater resources · Hydrogeology · Information management · Information systems · Information use · Interferometry · Continuous deformations · Line-of-sight rates · Local instability · SAR interferometry · Geodetic satellites

Abstract

In this paper we analyze the subsidence behavior of a coastal area in the province of Malaga (Costa del Sol), southern Spain, in the period 1992-2018 using C-band SAR interferometry. The area comprises several zones of interest where continuous deformation has happened during the analyzed period. Using SAR data from ESA's ERS-1/2, Envisat, and Sentinel-1A/B satellites, and Multi-Temporal InSAR methods we detect and monitor subsidence in highly populated and industrial areas, airport, harbor, as well as local instabilities over a railway line and a highway. In a previous work, we reported a subsidence due to intensive use of groundwater in some populated towns in the period 1992-2009 with maximum line-of-sight (LOS) rates of the order of -11 mm/yr. In this contribution, we confirm the subsidence trend. Furthermore, we detect an increase in the deformation rates for the most recent period (2014-2018), suggesting that the overexploitation of the aquifers has not ceased. A© 2018 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license.