Assessment of soil petrophysical parameters using electrical resistivity tomography (ERT) and induced polarization techniques.

Aizebeokhai, A. P. and Oyeyemi , Kehinde D. and Kayode, O.T (2015) Assessment of soil petrophysical parameters using electrical resistivity tomography (ERT) and induced polarization techniques. Research Journal of Applied Sciences, 10 (9). pp. 479-485. ISSN 1815-932X

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Abstract

Electrical resistivity tomography (ERT) and time domain induced polarization (IP) techniques has been used to assess the spatial variability of the soil petrophysical properties in Covenant University Farm, Ota, southwestern Nigeria. Apparent resistivity and chargeability of the induced polarization effect were concurrently measured along six traverses using Wenner array. The observed data were inverted to produced 2D electrical resistivity and chargeability models of the soil. The inverse models were used to delineate the tilled layer from the untilled layer, and qualitatively assess the degree of compaction and lateral thickness of the soil. Other petrophysical properties such as amount of clay volume, moisture content and organic matter in the soil which are related to the electrical conductivity of the soil were also inferred. The study demonstrates the effectiveness of ERT and time domain induced polarization techniques for accessing the variations of soil conditions in large tracts of land for precision agriculture.

Item Type:	Article
Subjects:	Q Science > Q Science (General) Q Science > QE Geology
Divisions:	Faculty of Engineering, Science and Mathematics > School of Physics
Depositing User:	Dr K. D. Oyeyemi
Date Deposited:	25 Feb 2016 14:21
Last Modified:	26 Feb 2016 10:55
URI:	http://eprints.covenantuniversity.edu.ng/id/eprint/6153

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