Advanced interpretation of subsidence in Murcia (SE Spain) using A-DInSAR data – modelling and validation

Please use this identifier to cite or link to this item:
Información del item - Informació de l'item - Item information
Title: Advanced interpretation of subsidence in Murcia (SE Spain) using A-DInSAR data – modelling and validation
Authors: Herrera García, Gerardo | Fernández, J.A. | Tomás, Roberto | Cooksley, Geraint | Mulas de la Peña, Joaquín
Research Group/s: Ingeniería del Terreno y sus Estructuras (InTerEs)
Center, Department or Service: Universidad de Alicante. Departamento de Ingeniería de la Construcción, Obras Públicas e Infraestructura Urbana
Keywords: Subsidence | A-DInSAR | SPN | Murcia
Knowledge Area: Ingeniería del Terreno
Issue Date: 2009
Publisher: Copernicus Publications | European Geosciences Union
Citation: HERRERA, G., et al. "Advanced interpretation of subsidence in Murcia (SE Spain) using A-DInSAR data – modelling and validation". Natural Hazards and Earth System Sciences. Vol. 9, No. 3 (2009). ISSN 1561-8633, pp. 647-661
Abstract: Subsidence is a natural hazard that affects wide areas in the world causing important economic costs annually. This phenomenon has occurred in the metropolitan area of Murcia City (SE Spain) as a result of groundwater overexploitation. In this work aquifer system subsidence is investigated using an advanced differential SAR interferometry remote sensing technique (A-DInSAR) called Stable Point Network (SPN). The SPN derived displacement results, mainly the velocity displacement maps and the time series of the displacement, reveal that in the period 2004–2008 the rate of subsidence in Murcia metropolitan area doubled with respect to the previous period from 1995 to 2005. The acceleration of the deformation phenomenon is explained by the drought period started in 2006. The comparison of the temporal evolution of the displacements measured with the extensometers and the SPN technique shows an average absolute error of 3.9±3.8 mm. Finally, results from a finite element model developed to simulate the recorded time history subsidence from known water table height changes compares well with the SPN displacement time series estimations. This result demonstrates the potential of A-DInSAR techniques to validate subsidence prediction models as an alternative to using instrumental ground based techniques for validation.
Sponsor: The European Space Agency (ESA) Terrafirma project has funded all the SAR data processing with the SPN technique as well as the subsidence interpretation and modelling work presented above. Additionally, this work has been partially financed by the Spanish Geological and Mining Institute (IGME) with the collaboration of the Regional Government of Murcia and the universities of Alicante (UA) and Rey Juan Carlos (URJC). This work has been also supported by the Spanish Ministry of Science and Research (MICINN) and EU FEDER under project TEC2008-06764-C02-02.
ISSN: 1561-8633 (Print) | 1684-9981 (Online)
DOI: 10.5194/nhess-9-647-2009
Language: eng
Type: info:eu-repo/semantics/article
Rights: Licencia Creative Commons Reconocimiento 3.0
Peer Review: si
Publisher version:
Appears in Collections:INV - INTERES - Artículos de Revistas

Files in This Item:
Files in This Item:
File Description SizeFormat 
Thumbnailnhess-9-647-2009.pdf14,25 MBAdobe PDFOpen Preview

This item is licensed under a Creative Commons License Creative Commons