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Anomaly Effects of Orthogonal Paired-arrays for 3D Geoelectrical Resistivity Imaging

Aizebeokhai, A. P. and Olayinka , A.I. (2011) Anomaly Effects of Orthogonal Paired-arrays for 3D Geoelectrical Resistivity Imaging. Environ Earth Sci, 64 (8). pp. 2141-2149. ISSN 1866-6280

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Abstract

A series of 2D apparent resistivity data were generated over two synthetic models representing different geological or environmental conditions commonly associated with geophysical applications for hydrogeological, environmental and engineering investigations. The apparent resistivity data were generated for the following arrays: Wenner-alpha (WA), Wenner-beta (WB), Wenner– Schlumberger (WSC), dipole–dipole (DDP), pole–dipole (PDP) and pole–pole (PP) arrays, which were paired such that apparent resistivity data for 2D profiles in a parallel direction are obtained with a particular array type and those in a perpendicular direction are observed with a different array type. The 2D apparent resistivity data for the orthogonal paired-arrays were then collated to 3D data sets. The effectiveness and efficiency of the orthogonal pairedarrays in 3D geoelectrical resistivity imaging were evaluated by determining the mean absolute anomaly effects of the electrode configurations on the synthetic models. The results show that DDP–PDP, DDP–PP, DDP–WSC, PDP– PP, DDP–WB, PDP–WB and WB–WSC orthogonal paired-arrays produced higher anomaly effects on the synthetic models. This indicates that DDP–PDP, DDP–PP, DDP–WSC, PDP–PP, DDP–WB, PDP–WB and WB–WSC orthogonal paired-arrays are more sensitive to 3D features of the geologic models than the other orthogonal pairedarrays investigated

Item Type: Article
Uncontrolled Keywords: Orthogonal paired-arrays � 3D surveys � Geoelectrical � Resistivity imaging � Anomaly effects � Measurement effectiveness
Subjects: Q Science > QC Physics
Divisions: Faculty of Engineering, Science and Mathematics > School of Physics
Depositing User: Mr Solomon Bayoko
Date Deposited: 13 Nov 2014 11:39
Last Modified: 13 Nov 2014 11:39
URI: http://eprints.covenantuniversity.edu.ng/id/eprint/2962

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