Physics Journal
Articles Information
Physics Journal, Vol.1, No.2, Sep. 2015, Pub. Date: Sep. 2, 2015
A Probe into the Corrosivity Level and Aquifer Protective Capacity of the Main Campus of the University of Abuja, Nigeria: Using Resistivity Method
Pages: 172-178 Views: 1791 Downloads: 1100
Authors
[01] E. O. Ojo, Department of Science Infrastructure, National Agency for Science and Engineering Infrastructure (NASENI), Idu Industrial Area, Abuja, Nigeria.
[02] Abraham Adelowo, Department of Science Infrastructure, National Agency for Science and Engineering Infrastructure (NASENI), Idu Industrial Area, Abuja, Nigeria.
[03] H. M. Abdulkarim, Department of Science Infrastructure, National Agency for Science and Engineering Infrastructure (NASENI), Idu Industrial Area, Abuja, Nigeria.
[04] A. K. Dauda, Department of Science Infrastructure, National Agency for Science and Engineering Infrastructure (NASENI), Idu Industrial Area, Abuja, Nigeria.
Abstract
Resistivity method of geophysics was used in the investigation of corrosivity level (CL) and aquifer protective capacity (APC) inthe main campus of University of Abuja. Total of 12 VES stations were study in the area with AB/2 of 1–250m. ABEM SAS 300c tarrameter was used to generate the data by schlumberger array method. The interpretations were aided by IPI2Win, MS Excel and surfer softwares. The measured overburden thickness ranges from 0.396-27.2m, with a mean value of 5.407m. The longitudinal conductance of the overburden units ranges from 0.03802-1.58441mhos. VES’s 1, 7, 9, 10, 11 and 12 of this present study has relatively high topsoil resistivity values which is practically noncorrosive (PNC), while VES’s 2, 3, 4 and 5 have moderate corrosivity and VES’s 6 and 8 have slightly corrosivity. Based on the longitudinal conductance values, fournoticeable aquifer protective capacity zones were defined, namely poor (VES’s 11 and 12), weak (VES’s 3, 6 and 8), moderate (VES’s 1, 2, 5, 7, 9 and 10) and good (VES 4).VES’s 3, 6, 8, 11, 12 of the study area maybe vulnerable to surface contamination, why VES’s 1, 2, 4, 5, 7, 9 and 10 may not be vulnerable to contamination because of the variation in the APC. This study is aimed at delineating zones that are very prone to groundwater contamination from surface contaminants and subsurface soils that are corrosive to utility pipes buried underground. Hence the findings of this work will constitute part of the tools for groundwater development and management and structural/infrastructural development planning of the area.
Keywords
Soil Resistivity, Aquifers, Protective Capacity, Resistivity, University of Abuja
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