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Int. J. Environ. Res. Public Health 2017, 14(11), 1369; doi:10.3390/ijerph14111369

Integration of GIS, Electromagnetic and Electrical Methods in the Delimitation of Groundwater Polluted by Effluent Discharge (Salamanca, Spain): A Case Study

1
Department of Geology, Faculty of Sciences, University of Salamanca, 37008 Salamanca, Spain
2
CSIC-National Museum of Natural Sciences, Geology Section, 28006 Madrid, Spain
*
Author to whom correspondence should be addressed.
Received: 20 September 2017 / Revised: 6 November 2017 / Accepted: 7 November 2017 / Published: 10 November 2017
(This article belongs to the Special Issue Natural Hazards and Public Health: A Systems Approach)
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Abstract

The present work envisages the possible geometry of a contaminated plume of groundwater near hospital facilities by combining GIS (Geographic Information System) and geophysical methods. The rock underlying the soil and thin sedimentary cover of the study area is moderately fractured quartzite, which makes aquifers vulnerable to pollution. The GIS methodology is used to calculate the area that would be affected by the effluent source of residual water, based on algorithms that consider ground surface mapping (slopes, orientations, accumulated costs and cost per distance). Geophysical methods (electromagnetic induction and electric resistivity tomography) use changes in the electrical conductivity or resistivity of the subsurface to determine the geometry of the discharge and the degree of contamination. The model presented would allow a preliminary investigation regarding potential corrective measures. View Full-Text
Keywords: pollution; groundwater; GIS; geophysics; effluent discharge pollution; groundwater; GIS; geophysics; effluent discharge
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Montes, R.V.; Martínez-Graña, A.M.; Martínez Catalán, J.R.; Arribas, P.A.; Sánchez San Román, F.J.; Zazo, C. Integration of GIS, Electromagnetic and Electrical Methods in the Delimitation of Groundwater Polluted by Effluent Discharge (Salamanca, Spain): A Case Study. Int. J. Environ. Res. Public Health 2017, 14, 1369.

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