Special Issue - Hydrogeology in Tunisia
31 March 2025
Vol. 14 No. 1 (2025)
Reassessment of Plio-Quaternary aquifer mineralization (Sidi Mansour plain, Southern Tunisia): a machine learning approach
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Understanding aquifer mineralization is crucial for sustainable water resource management. Thus, the Plio-Quaternary aquifer of the Sidi Mansour plain was studied in detail for reassessment of its heterogeneous mineralization water. Geochemical analysis and stable (18O, 2H) and radiogenic isotope (3H, 14C) analyses have provided a better understanding of the hydrodynamics and mineralization processes underlying the chemical composition. An artificial neural network was used for an integrated groundwater assessment in the Sidi Mansour area via the prediction of total dissolved solids (TDS). To the west, the Plio-Quaternary aquifer has a Na-Ca-SO4 facies with high salinity because of mineral dissolution, mixing, and upward percolation of deeper waters through the Om Ali fault (contribution up to 96%). To the east, predominantly Ca-SO4 waters are less mineralized due to the infiltration of recent precipitation. Salinity prediction using machine learning indicated that the proposed model achieved high efficiency. The backpropagation neural network model results (10:4:1) indicated high accuracy of the trained algorithm, as confirmed by a cross-validation test (high accuracy [88.89%], specificity [100%], and R2 [0.9687]). This study highlights the importance of this model in predicting salinity for the Plio-Quaternary aquifer in this region.
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Reassessment of Plio-Quaternary aquifer mineralization (Sidi Mansour plain, Southern Tunisia): a machine learning approach. (2025). Acque Sotterranee - Italian Journal of Groundwater, 14(1). https://doi.org/10.7343/as-2025-804
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