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Home  >  Volume 59

13. GEOPHYSICAL INVESTIGATION FOR ENVIRONMENTAL HYDRO-HAZARD ANALYSES IN MAKARFI TOWN, NORTH-WESTERN NIGERIA. by Ahmed A. L, Adukwu G. O, Abubakar A. and Dewu B. B. M Volume 59 (January – March 2021 Issue)
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GEOPHYSICAL INVESTIGATION FOR ENVIRONMENTAL HYDRO-HAZARD ANALYSES IN MAKARFI TOWN, NORTH-WESTERN NIGERIA.

Ahmed A. L1., Adukwu G. O2., Abubakar A3. and Dewu B. B. M4

1Department of Physics, Ahmadu Bello University, Zaria;

2Dept. of Physics & Astronomy, University of Nigeria, Nsukka;

3Department of Physics, University of Maiduguri, Maiduguri, Nigeria;

4Centre for Energy Research & Training, Ahmadu Bello University, Zaria.

Abstract

Geophysical investigation for hydro-hazard studies was undertaken at Makarfi town which falls within the Basement Complex of North-Western Nigeria. The study was aimed at assisting in the planning and developmental process of the undeveloped part of a College site in Makarfi town. Vertical Electrical Sounding (VES) using Schlumberger Array was conducted at 55 sounding stations. The data obtained were subjected to IP12Win software to determine the layer parameters from which the Dar-Zarrouk Parameter for each sounding point was calculated. The Longitudinal Unit Conductance values were contoured using Surfer-8 which revealed that the Overburden Protective Capacity of the superficial deposits in the environment is generally poor, constituting about 25%, and varied from less than 0.100mhos (good) on the north-west and south-west flank of the study area. Thus, the hydrogeologic system at the College site is vulnerable to contamination. Hence, the result reasonably provides a basis for which groundwater potential zones are appraised for safety in case potential sources of contamination sites such as septic tanks, sewage channels, waste landfills et cetera are planned for the area under study. Likewise, the Soil Corrosivity map shows that the southern to eastern portion of the area are characterized by slightly corrosive to strongly corrosive overburden. corrosion-prevention system ought to be considered at engineering design stages of metal-fortified structures to be used within the College site. This study presents soil corrosion and overburden protection as environmental hazard-prone factors that need be considered at the planning stages of civil engineering structures within the study area.

Keywords:  Environmental Hazards, Longitudinal Unit Conductance, Overburden Protective Capacity, Soil Corrosivity, Metal-fortified Structures. 

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