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Estimation of Hydraulic Parameters from Dar-zarrouk Parameters for Aquiferous Zone Characterization in Iyesi Axis, Ota, Ogun State Nigeria

Joel, E. S. and Olasehinde, P.I and Dilip, D.K. and Omeje, Maxwell (2017) Estimation of Hydraulic Parameters from Dar-zarrouk Parameters for Aquiferous Zone Characterization in Iyesi Axis, Ota, Ogun State Nigeria. In: FOURTH NIGERIAN GEOPHYSICAL SOCIETY CONFERENCEEXPLOITATION OF EARTH AND SPACE ENVIRONMENT A Highway to National Economic Recovery, May 9 – 12, 2017, Kano, NIGERIA.

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Abstract

The cost of estimating hydraulic parameters from slug test, pumping test, soil sample analysis etc is expensive. However, these parameters such as transverse resistance and longitudinal conductance can be estimated from geophysical parameters which are cost effective, noninvasive and inexpensive. In this present study, twenty (20) geoelectric sounding were carried out in Iyesi- Jackross axis with the use of ABEM 1000 series terrameter using schlumberger array and AB/2 ranges from 240m to 420m. The result revealed that there are six lithological layers in the study area namely; topsoil, lateritic clay, clayey sand, kaolitic clay, clayey sand (low yield aquifer) and sand (Main aquifer). The aquifer’s depth ranges from 45.1m to 114.7 m with resistivity values ranges from 19.5 Ωm to 850.8 Ωm. Furthermore, transverse resistance and longitudinal conductance were estimated from geophysical parameters and it was observed that longitudinal conductance is low which ranges from 0.0127 Ω−1 to 0.0941 Ω −1 . Consequently, the aquiferous unit is characterized with high transmissivity and hydraulic conductivity. Transverse resistance ranges from 12246.00 Ωm2 to 124878.61 Ωm2 and increase in transverse resistance that was observed generally indicating high transmissivity and high yield of the aquiferous units. It is therefore signifies that the study area is characterized with good groundwater potential. Further study can be carried out to estimate the boundary of aquifer thickness and the possible intrusion of Basement complex using magnetic technique.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Geophysical parameters, hydraulic parameters, aquiferous zone
Subjects: Q Science > Q Science (General)
Q Science > QC Physics
Divisions: Faculty of Engineering, Science and Mathematics > School of Physics
Depositing User: Mrs Hannah Akinwumi
Date Deposited: 18 May 2017 07:53
Last Modified: 26 May 2017 12:22
URI: http://eprints.covenantuniversity.edu.ng/id/eprint/8141

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