Journal
ENVIRONMENTAL EARTH SCIENCES
Volume 75, Issue 3, Pages -Publisher
SPRINGER
DOI: 10.1007/s12665-015-5051-x
Keywords
InSAR; Radar interferometry; Subsidence; Deformation; SW Spain; Aquifer
Funding
- European Space Agency (ESA) [9386 CAT-1]
- Ministerio de Ciencia e Innovacion (Spain) [PRX 12/00297, ESP2006-28463-E, CSD2006-0041, AYA2010-15501]
- Junta de Andalucia (Spain) [P09-RNM-5388]
- Juan de la Cierva grant from Ministerio de Ciencia e Innovacion [JCI-2011-09178]
- [RNM-282]
- [RNM148]
- Natural Environment Research Council [come30001] Funding Source: researchfish
- NERC [come30001] Funding Source: UKRI
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This study uses the InSAR technique to analyse ground subsidence due to intensive exploitation of an aquifer for agricultural and urban purposes in the Montellano town (SW Spain). The detailed deformation maps clearly show that the spatial and temporal extent of subsidence is controlled by piezometric level fluctuations and the thickness of compressible sediments. The total vertical displacement measured with multi-temporal InSAR, between 1992 and 2010, is 33 mm that corresponds with a decrease of 43 m in the groundwater level. This technique allows monitoring the evolution of settlement related to water level fall in an area where subsidence has not yet been reported by population or authorities through infrastructure damages and to discuss the effect of the aquifer recovery. This information is, therefore, valuable for implementing effective groundwater management schemes and land-use planning and to propose new building regulations in the most affected areas.
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