Hydrogeological framework and geometry modeling via joint gravity and borehole parameters, the Nadhour-Sisseb-El Alem basin (central-eastern Tunisia)

摘要: Abstract The Nadhour-Sisseb-El Alem basin, in the central-eastern part of Tunisia, is characterized by scarcity surface and subsurface water resources. Although aquifer systems this basin are not well understood, scarce resources subject to a high rate exploitation leading significant drop level table. This work presents correlation gravity data with hydrogeological order improve knowledge deep structures systems. Various geophysical filtering techniques (e.g., residual anomaly, upward continuation, horizontal gradient, Euler deconvolution) applied complete Bouguer deduce geometry highlight lineaments that correspond tectonic features. structural framework shows N-S NNE-SSW E-W oriented should be related deformations. In addition faults, previously recognized, new highlighted present work. They NE-, NW-, E- N- trending faults have controlled structuring basin. 2D forward modeling, based on interpretation geophysical, geological data, led better understanding spatial distribution Campanian-Maastrichtian Cenozoic potential aquifers. Three sub-basins identified include Nadhour sub-basin north, El sub-Basin South Etrabelsia East. These marked thickening deposits, separated Sisseb-Fadeloun raised structure Neogene Quaternary thinned series. results allow determination limit conditions for hydrodynamic evolution explain some anomalies quantity quality groundwater. provide management guide prospection Atlassic basins North Africa.