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Bahir, M.; Ouhamdouch, S.; Carreira, P.M. |
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Title |
Isotopic and geochemical methods for studying water–rock interaction and recharge mode: application to the Cenomanian–Turonian and Plio-Quaternary aquifers of Essaouira Basin, Morocco |
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2018 |
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Mar. Freshwater Res. |
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69 |
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8 |
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1290-1300 |
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geochemistry, semi-arid area, stable isotopes, water resources. |
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Study of the Cenomanian–Turonian and Plio–Quaternary aquifers of Essaouira basin (Western Morocco), based on the interpretation of geochemical (major elements) and isotopic (18O, 2H, 13C and 14C) data, has aided the understanding of the hydrodynamics of these aquifers, which is greatly affected by tectonics. Hydrochemical characteristics based on the bivariate diagrams of major ions (Cl–, SO42–, NO3–, HCO3–, Na+, Mg2+, K+ and Ca2+) and electrical conductivity and mineral saturation indices indicate that the origins of groundwater mineralisation are the result of: (1) evaporite dissolution; (2) cation exchange reactions; (3) and evaporation processes. Radiogenic isotopes (3H and 14C) have highlighted the presence of significant recent recharge in the eastern part of the basin, with groundwater moving according to the general flow path (south-east to north-west). Stable isotope data from the Essaouira basin plot along the Global Meteoric Water Line and below the Local Meteoric Water Line. This suggests that groundwater has been recharged under several different climate regimes. |
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THL @ christoph.kuells @ |
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191 |
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Carreira, P. M.; Lobo de Pina, A.; Mota Gomes, A.; Marques, J.M.; Monteiro Santos, F. |
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Geochemical and Isotopic Marks for Tracing Groundwater Salinization: Santiago Island, Republic of Cape Verde, Case Study |
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2019 |
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Advances in Sustainable and Environmental Hydrology, Hydrogeology, Hydrochemistry and Water Resources |
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Verlag: Springer International Publishing |
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Drioli,E.; Macedonio, F. |
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en |
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en |
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Innovation in Process Engineering for Hydrology |
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THL @ christoph.kuells @ |
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188 |
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Zhou*, H.; Gómez-Hernández, J.J.; Li, L. |
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Inverse methods in hydrogeology: Evolution and recent trends |
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2014 |
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Adv. Water Resour. |
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63 |
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22-37 |
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Elsevier BV |
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CUT @ phaedon.kyriakidis @ Zhou2014 |
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170 |
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Yoon*, S.; Williams, J.R.; Juanes, R.; Kang, P.K. |
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Maximizing the value of pressure data in saline aquifer characterization |
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2017 |
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Adv. Water Resour. |
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109 |
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14-28 |
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Elsevier BV |
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CUT @ phaedon.kyriakidis @ Yoon2017 |
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169 |
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Naranjo-Fernández, N.; Guardiola-Albert, C.; Montero-González, E. |
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Applying 3D geostatistical simulation to improve the groundwater management modelling of sedimentary aquifers: The case of Doñana (Southwest Spain) |
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2019 |
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Water |
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11 |
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39 |
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geostatistics; hydrofacies; hydrogeological model; stochastic simulation; water balance |
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Mathematical groundwater modelling with homogeneous permeability zones has been used for decades to manage water resources in the Almonte-Marismas aquifer (southwest Spain). This is a highly heterogeneous detrital aquifer which supports valuable ecological systems in the Doñana National Park. The present study demonstrates that it is possible to better characterize this heterogeneity by numerical discretization of the geophysical and lithological data available. We identified six hydrofacies whose spatial characteristics were quantified with indicator variogram modelling. Sequential Indicator Simulation then made it possible to construct a 3D geological model. Finally, this detailed model was included in MODFLOW through the Model Muse interface. This final process is still a challenge due to the difficulty of downscaling to a handy numerical modelling scale. New piezometric surfaces and water budgets were obtained. The classical model with zones and the model with 3D simulation were compared to confirm that, for management purposes, the effort of improving the geological heterogeneities is worthwhile. This paper also highlights the relevance of including subsurface heterogeneities within a real groundwater management model in the present global change scenario. |
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CUT @ phaedon.kyriakidis @ Fernandez2019 |
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156 |
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