St is in comprehensive and compact blocks which resist the dismantling.
St is in extensive and compact blocks which resist the dismantling. However, in wet places, locations, the in depth and compact blocks which resist the dismantling. On the other hand, in wet the iron crust is usually dislocated (existence of someof some Goralatide custom synthesis residual or perhaps fully dismantled iron crust is normally dislocated (existence residual blocks) blocks) or even entirely disfollowing a loweringaof the baseof the and alevel and awetter climate. climate. mantled following lowering level base period of period of wetter Based on to the identical author, fromhydrogeological point of view, the consequence According the same author, in the the hydrogeological point of view, the conseofquence of this distinction in the behaviortopographical and hydrogeological watersheds this distinction in the behavior is that the is the fact that the topographical and hydrogeological of Sahelian locations will not be superposed. In other words, the ridges don’t coincide withWater 2021, 13,17 ofthe groundwater divides. The geochemical benefits help this hypothesis, firstly, by the low values of electrical conductivity found within the area (Figures 7 and 13). The low mineralization of your waters also can be explained by the fact that they constitute altered environments perpetually leached by the beating in the water table seasonally renewed by rainwater [66]. In addition, the waters of the piezometers inside the valley aquifers show the same similarities, grouped below cluster II (low EC) with chloride and BI-0115 manufacturer sulfate agnesium facies characteristic in the waters of your majority of piezometers. These facies are an indicator of your contribution of anthropogenic components (nitrates and chlorides) by way of rainwater infiltration. The relatively high nitrate values of the water in these aquifers are shown in Figure 7. In addition, the low Na/Cl ratio (Figure eight) of your piezometers inside the central valley confirms the external input of chlorides for the groundwater via rainwater infiltration. The recharge mechanism within the central valley is direct recharge by rainwater infiltration. It could be the place where water is moved in all directions within the basin resulting from the highest hydraulic load. Higher values of surface hydraulic conductivity are also located inside the northern and eastern ridge. Nevertheless, the analysis in the hydrographs of the aquifers with the northern ridge shows the independence with the evolution of the levels regarding the rainfall. This lack of correlation suggests the existence of a hydraulic brake amongst the permeable soils and the saturated zone. Certainly, the geophysical characterization research carried out by [56] revealed, around the northern ridge and discreetly on the eastern ridge, the presence of a clayey zone covered by numerous tens of meters of iron crust. The iron crust acts as impermeable strata stopping water percolation [67] and could justify the existence of an impermeable interface between the permeable soils and also the saturated zone. Additionally, the results of pumping tests carried out [37,65] have led for the hypothesis of a confined aquifer at this location. This hypothesis is supported by the evaluation of the evolution of EC as time passes, which showed an early response of your deep-aquifer-captured S1CN in comparison with the alterites reservoir. This early response of the deep aquifer suggests a horizontal as an alternative to a vertical transfer procedure. Additionally, the waters of the S1CN, S1CNBis, and SaG piezometers show Na/Cl molar ratios greater than 1. This excess of sodium ions is due to a cat.
