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Measurement and inversion schemes for single borehole-to-surface electrical resistivity tomography surveys

Tsourlos, Panagiotis; Ogilvy, Richard; Papazachos, Constantinos; Meldrum, Philip. 2011 Measurement and inversion schemes for single borehole-to-surface electrical resistivity tomography surveys. Journal of Geophysics and Engineering, 8 (4). 487-497. 10.1088/1742-2132/8/4/001

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Abstract/Summary

Several measurement arrangements involving different electrode arrays are considered for the case of single borehole-to-surface ERT surveys. Synthetic data tests indicate that standard measuring and inversion techniques can result in reconstructed images that suffer from artefacts. Based on the measurement sensitivity analysis, we propose a modified inversion scheme that compensates for the symmetric sensitivity of the in-hole measurements and improves the quality of the image. The new scheme has been tested using both synthetic and field data. The best results were obtained using pole–dipole or dipole–dipole arrays. Finally, some recommendations are made to improve the efficiency of field measurement configurations.

Item Type: Publication - Article
Digital Object Identifier (DOI): 10.1088/1742-2132/8/4/001
Programmes: BGS Programmes 2010 > Earth hazards and systems
Date made live: 28 Mar 2012 15:36
URI: http://nora.nerc.ac.uk/id/eprint/17525

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