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Al Neelian University (2018)

MULTI-GEOPHYSICAL TECHNIQUES FOR HYDRO-GEOPHYSICAL INVESTIGATIONS IN WESTERN OMDURMAN KHARTOUM STATE-SUDAN

Nada Al Derdere Adroos

Titre : MULTI-GEOPHYSICAL TECHNIQUES FOR HYDRO-GEOPHYSICAL INVESTIGATIONS IN WESTERN OMDURMAN KHARTOUM STATE-SUDAN

Auteur Nada Al Derdere Adroos

Université de soutenance : Al Neelian University

Grade : Master Degree of Science in Exploration geophysics 2018

Résumé
The area under present consideration is located in the central part of the Sudan is generally bounded by latitudes (16º - 16.8º N)and longitudes(31º - 33º E)it comprises the Khartoum state and North Kordofa. The present study will be focused in Wadi El Mugaddam basin. The geological unites in the study area are, sedimentary rocks. The sedimentary rocks included : Nubian sandstone Formations and superficial deposits (clays and sand dunes). The annual rainfall ranges between 100mm to 150mm and occurs intermittently during the period from July to October. The geophysical methods applied are Electrical Resistivity Method - Vertical- Electrical Sounding (VES) to determine the groundwater occurrences, aquifers extensions, thickness and depths and calibrated with boreholes lithological data. The ranges of resistivity are used to construct geo-electrical sections forthe study area. Apparent resistivity models have been generated in depth ; the intention was to use the model in the static and dynamic modeling. 3D model of apparent resistivity generated form VES calibrated data and wells marker. Groundwater in the study area occurs into two aquifers ; the shallow aquifer ranging between 60 -120m and the deep aquifer vary between 130m to 250mbelow ground surface. Groundwater quality in the study area is very good with total dissolved solids (T.D.S) in the range of 245 to 848 mg/lite

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