On rule of thumb interpretation of restivity gradient array data

M. F. Middleton

doi:10.1071/EG974134

ISSN: 0812-3985
E-ISSN: 1834-7533

On rule of thumb interpretation of restivity gradient array data
Authors M. F. Middleton^a
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^a University of Sydney
Publisher: Australian Society of Exploration Geophysicists
Source: Exploration Geophysics, Volume 5, Issue 4, Dec 1974, p. 134 - 135
DOI: https://doi.org/10.1071/EG974134
- Published online: 01 Dec 1974

Abstract

The so called resistivity gradient array, described by Whiteley (1973) and illustrated in figure 1, presents a unique opportunity for the application of semi-quantitative interpretation techniques based on potential theory. Large current electrode separations, as encountered in the resistivity gradient array, enable the applied potential field in the vicinity of the centre of the array to be closely approximated by a constant field (Kunetz, 1966). The assumption of a constant applied field considerably reduces the complexity of mathematical treatment.

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1974-12-01

2026-01-19

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References

GRANT, F.S. and WEST, G. F. (1965), Interpretation theory in applied geophysics; New York, McGraw-Hill Book Co. Inc.
KUNETZ, G. (1966) Principles of direct current resistivity prospecting: Geoexploration Monographs. Ser. 1, No. 1.
LIPSKAYA, N.V. (1949) The field of a point electrode observed on the Earth’s surface near a buried conducting sphere, Izv. Akad, Nauk S.S.S.R., Ser. Geol. i Geofiz., Vol. 8, pp. 409-427.
PABASNIS’ D.S. (1967) Some recent geoelectrical measurements in the Swedish sulphide ore fields illustrating the scope and limitations of the methods concerned; in Mining and groundwater geophysics 1967, pp. 290-302, Geological survey of Canada; Econ. Geol. Report No. 26.
VAN NOSTRAND, R.G. (1953) Limitations on resistivity methods as inferred from the buried sphere problem. Geophysics, Vol. 18 pp 428-433.
WHITELEY, P.J. (1973) Electrode arrays in resistivity prospecting: a review, Bull. Aust. Soc. Explor. Geophys., Vol. 4, No. 1, pp. 1-29. WHITELEY, R.J. (1974) Personal Communication, Aug. 1974.

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Article Type: Research Article

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On rule of thumb interpretation of restivity gradient array data

Abstract

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