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Title: Estudio comparativo de diferentes técnicas geofísicas para el control de la intrusión salina en acuíferos costeros: Aplicación al acuífero de Oued Laou (Marruecos)
Author: Himi, Mahjoub
Deidda, G.P.
Salhi, Adil
Stitou-El Messari, J.P.
Sendrós Brea-Iglesias, Alex
Rivero Marginedas, Lluís
Lovera Carrasco, Raúl
Casas i Ponsatí, Albert
Keywords: Aqüífers
Prospecció geofísica
Hidrologia d'aigües subterrànies
Geophysical exploration
Groundwater hydrology
Issue Date: Mar-2022
Publisher: Instituto Geológico y Minero de España
Abstract: Groundwater is a fundamental and strategic resource for water supply of coastal areas, especially in the Mediterranean basin where the irregularity of precipitation, both seasonally and year-onyear, put at risk the availability of surface water in the rivers, which go from being dry for long periods to causing torrential discharges. In particular, if the exploitation of coastal aquifers is not properly managed and the quality of groundwater is not monitored regularly, important sectors of the aquifer may be affected by saltwater intrusion, and cause the abandonment of the wells. Geophysical methods are a very effective complement to provide indirect information on groundwater salinity in areas of the aquifer where wells or piezometers are not available for sampling. This study presents the results obtained from the application of different geophysical methods in the coastal aquifer of Oued Laou (Morocco) as a complement to hydrochemical data. Four geophysical methods, two electrical: vertical electrical sounding and electrical resistivity tomography, and two electromagnetic: frequency domain EM and time domain EM sounding. The comparative analysis of the results obtained by each method has made it possible to assess the coherence and complementarity of each method, as well as their corresponding advantages and limitations in terms of resolution and cost-effectiveness.
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It is part of: Boletín Geológico y Minero, 2022, vol. 133, num. 1, p. 47-61
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ISSN: 0366-0176
Appears in Collections:Articles publicats en revistes (Mineralogia, Petrologia i Geologia Aplicada)

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