Comparison of water-level, extensometric, DInSAR and simulation data for quantification of subsidence in Murcia City (SE Spain)

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Title: Comparison of water-level, extensometric, DInSAR and simulation data for quantification of subsidence in Murcia City (SE Spain)
Authors: Tessitore, Serena | Fernández-Merodo, José Antonio | Herrera García, Gerardo | Tomás, Roberto | Ramondini, Massimo | Sanabria, Margarita | Duro, Javier | Mulas de la Peña, Joaquín | Calcaterra, Domenico
Research Group/s: Ingeniería del Terreno y sus Estructuras (InTerEs)
Center, Department or Service: Universidad de Alicante. Departamento de Ingeniería Civil
Keywords: Subsidence | Numerical modeling | Aquifer exploitation | Geohazards | Spain
Knowledge Area: Ingeniería del Terreno
Issue Date: May-2016
Publisher: Springer Berlin Heidelberg
Citation: Hydrogeology Journal. 2016, 24(3): 727-747. doi:10.1007/s10040-015-1349-8
Abstract: Subsidence due to groundwater overexploitation has been recognized in the metropolitan area of Murcia (25 km2) in south-eastern Spain since the early 1990s. Previous published works have focused their attention on land subsidence that occurred during the drought period between 1995 and 2008. This work first analyzes the groundwater recovery that has occurred since 2008 and then determines the kind of associated ground deformation detected by the new extensometric data. Subsequently, subsidence time series are computed on 24 geotechnical boreholes scattered throughout the study area by means of a hydro-mechanical finite element code and a linear-elastic constitutive law. A spatio-temporal interpolation of the numerically modeled surface displacements is performed over the whole domain and compared with extensometers and DInSAR-derived displacement maps in two different periods: the drought period from 2004 to 2008, and the recovery period from 2008 to 2012. In spite of the limited information on the geomechanical parameters characterizing the modelled geological formations, the proposed approach is able to discriminate areas where the soils have an elastic behavior (small differences in the comparisons) or an elasto-plastic behavior (large differences in the comparisons). This zonation enhances the understanding of the subsidence phenomenon in Murcia City and could prevent, from a quantitatively point of view, future severe subsidence due to aquifer overexploitation.
Sponsor: R. Tomás was supported by the Ministry of Education, Culture and Sport through the project PRX14/00100. Part of this work is also supported by the Spanish Ministry of Economy and Competitiveness and EU FEDER funds under projects TEC2011-28201-C02-02, TIN2014-55413-C2-2-P and ESP2013-47780-C2-2-R and by the project 15224/PI/10 from the Regional Agency of Science and Technology in Murcia. The European Space Agency (ESA) Terrafirma project funded all the SAR data processing with the SPN technique.
ISSN: 1431-2174 (Print) | 1435-0157 (Online)
DOI: 10.1007/s10040-015-1349-8
Language: eng
Type: info:eu-repo/semantics/article
Rights: © Springer-Verlag Berlin Heidelberg 2016. The final publication is available at Springer via
Peer Review: si
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