Abstract
In this study, the geohydraulic parameters of aquifers in the Sahel Doukkala region, western Morocco were estimated using a geostatistical method to transform vertical electrical soundings (VES) data into electrical resistivity tomography (ERT) profiles. The resulting ERT profiles covered a larger area than the original VES data, allowing for a more comprehensive analysis. The obtained results indicated that the apparent and inverted resistivities range from 16 to 1558 Ohm.m and from 4 to 6980 Ohm.m, respectively, with a low inversion error (RMS) of 6.1–13.1%, demonstrating the reliability of the proposed approach. Using the inverted resistivities, the estimated hydraulic conductivity, effective porosity, and transmissivity ranged from 0.2 to > 103.7 m/day, 11.6% to > 45.8%, and 1.7 to > 2028.6 m2/day, respectively. These values reflect the sand, clayey sand, and limestone lithology prevalent in the study area, with medium to high aquifer potential. The validation of our results with pumping test data showed that the estimated geohydraulic parameters are representative of the geological formations in the study area. In addition to providing a rapid interpretation of the data, the present study offers fundamental insights for future research, contributing to better planning and management of groundwater resources.
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Data availability
The data that support the findings of this study are available from the corresponding author, [Ahmed FADILI], upon reasonable request.
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Study conception and design, Acquisition of data, Drafting of manuscript, Analysis and interpretation Ahmed FADILI, Saliha NAJIB, Othmane BOUALLA Critical revision, Analysis and interpretation Abdelhadi MAKAN, Khalid MEHDI, Abdel-Ali KHARIS
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Fadili, A., Najib, S., Boualla, O. et al. Estimation of geohydraulic parameters in coastal aquifers based on VES transformed to ERT profiles. Environ Earth Sci 82, 404 (2023). https://doi.org/10.1007/s12665-023-11091-y
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DOI: https://doi.org/10.1007/s12665-023-11091-y