Student short Biography:
Moses is a seasoned, motivated and professional Geologist specializing in exploration Geophysics and he is excellence in bring value to students and clients and fostering positive relation among co-worker. As ateaching Assistant in department of geology, University of Jubasince 2010, Moses has been in charge of teaching, Geological Field work, Seminars Supervisor, Hydro geophysical survey for groundwater and also as a wellsite geologist, formation evaluation expert in the oil Company (GPOC- South Sudan).
Moses tireless work in completing his lectures on time as well as focusing on the growth of the department, As a high valued academic staff, Moses has been granted scholarship for Master’s degree at the university of Nairobi in 2016 for his service in teaching and supervision of students.
He hopes to continue his track record to excellent leadership and communication in coming future.
Moses is a graduate from university of Juba in2009 with a degree in Geology and started working as teaching assistant in 2010 and as wellsite Geologist in Oil Company in 2013. In addition, Moses also spearheaded in hydrogeohysical survey for groundwater project with local and international NGO’s.
Currently In an Oil Company, Moses is in charge of formation evaluation during drilling, wireline logging operation and Supervision of Multiphase flow metering for well testing operation and managing day to day operation of the department.
Thesis/Project Title: Groundwater Potential Assessment Using Remote Sensing,Geographical Information System and Electrical Resistivity Methods InCrystalline Terrainin Kapuri Area, Jubek State, South Sudan.
This research project was carried out in Kapuri area of Lury County, Jubek state South Sudan; an area that is geologically underlain by crystalline basement rocks. Groundwater investigations in the crystalline rocks is quite challenging because the overall permeability of these rocks is usually very low. The groundwater is typically confined within the fractured and weathered zones. Therefore, the yields from wells tapping these formations may not, in most cases, be sufficient for exploitation. The study area is further compounded by additional problems in that no borehole has been drilled in this area, the previous groundwaterstudies are scanty, and they experiences high water demand due to resettlement of refugees returning from neighbouring countries.The main aim of the investigation was to evaluate earth’s subsurface geoelectric properties that might indicate suitable geological and/or structural aspects favourable for groundwater occurrence. This main objective was achieved through use of remote sensing data, application of Geographic Information System (GIS) techniques and ground geophysical survey. As a first step, groundwater potential assessment was carried out using remote sensed data from Landsat ETM+8 and digital elevations from which thematic maps were derived using ArcGIS software. These thematic layers include lithology, geomorphology, Lineament density, DEM, slope, drainage density, Land Use Land Cover map. The individual thematic layer were assigned weightsfor the purpose of spatial analysis. On geophysical survey, electrical resistivity profiling using weaner configuration was carried out to delineate subsurface geological structures along 3 horizontal profileseach stretching over a distance of 1500 meters. The horizontal separation of the profiles was 500 metres. At each station, resistivity data was collected at three levels namely 15m, 35m and 45m below ground level. These profiles were plotted in Microsoft Excel and fractures along each profiles were identified. In addition, 192 vertical electrical soundings (VES) were performed using schlumberger array. These VES data were analysed using the Interpex IX1D computer software and the resistivity versus depth models for each location was estimated. This followed by construction of 2D profiles and 3D models using leapfrog software.
The GIS and remote sensing results revealed that Kapuri area is characterized by relatively good to moderate groundwater potential confined at the western part of LuryCounty. The results from geophysical survey indicate that the area is generally underlain by four geologic section which include top soil (sandy clay), moderately weathered, fractured and fresh basement. Moderately weathered material ranging from less than one meter to several meters in thickness separate the overburden from the underlying weathered and fractured bedrock, while the basal layer is comprised of compact and massive fresh basement. The fractured and the moderately weathered rock make up the aquiferous zone within the study area.
This work recommends that boreholes be drilled in areas that have been identified to have high groundwater potential. Additional works, is recommended using 2D and 3D resistivity tomography, with the aim of establishing highly fractured rock mass and therefore identify more