Twenty-year advanced DInSAR analysis of severe land subsidence: The Alto Guadalentín Basin (Spain) case study

Abstract

Twenty-year advanced DIn-SAR analysis of severe land subsidence: the Alto Guadalentín Basin (Spain) case study, Engineering Geology (2015Geology ( ), doi: 10.1016Geology ( /j.enggeo.2015 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. Guadalentín aquifer system. The negative gradient of the pore pressure is responsible for the extremely slow consolidation of a very thick (>100 m) layer of fine-grained silt and clay layers with low vertical hydraulic permeability (approximately 50 mm/h) wherein the maximum settlement has still not been reached. A C C E P T E D M A N U S C R I P T ACCEPTED MANUSCRIPT A C C E P T E D M A N U S C R I P T ACCEPTED MANUSCRIPT

Methodology for Detection and Interpretation of Ground Motion Areas with the A-DInSAR Time Series Analysis

“…The results reveal that the peaks of average LOS velocity are consistent with the maximum thickness of clayey-silty deposits. As a consequence, the thickness of the upper clayey-silty deposits seems to be a controlling factor of the rate of ground motion, as observed in others case histories, such as Murcia, Vega Media of the Segura River Basin, and Alto Guadalentín Basin in Spain [46][47][48], and along the Venice coast and Sibari plain in Italy [49,50].…”

Interpolation of GPS and Geological Data Using InSAR Deformation Maps: Method and Application to Land Subsidence in the Alto Guadalentín Aquifer (SE Spain)

“…The aquifer system has a surface of 275 km 2 , and its thickness varies between 100 and 300 m ( [27]; Figure 1). Based on stratigraphic information from 23 boreholes, [28] classified the Plio-Quaternary materials filling the basin into compressible and non-compressible, the former consisting of clay and silt layers and the latter formed by conglomerates and sands (see Figure 1c). The continuous pumping of groundwater in the aquifer, mainly for agricultural use, led to a decrease in the piezometric levels of more than 200 m since 1975 [28], resulting in the overexploitation of the aquifer and the land subsidence studied here.…”

DInSAR-Based Detection of Land Subsidence and Correlation with Groundwater Depletion in Konya Plain, Turkey

“…The thickness of compressible layers was derived by considering the thickness of both clay and silt layers, located within the alluvial sediments of the plain, which usually influence the processes of subsidence related to groundwater extraction [31,32]. Table 3.…”

“…Dehghani et al [30] exploited both descending and ascending ENVISAT datasets to measure the magnitude of groundwater related subsidence in the Tehran basin, Iran. The effectiveness of DInSAR techniques in mapping and monitoring surface deformations has been proved in many applications from Europe to Asia [31][32][33] showing that ground subsidence triggered and/or accelerated by aquifer overexploitation is a common hazard impacting extensive areas worldwide.…”