Time-Domain Electromagnetic Responses of a Polarizable Target

Lindsay Thomas; Terry Lee

doi:10.1071/EG988365

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

Time-Domain Electromagnetic Responses of a Polarizable Target
Authors Lindsay Thomas^a and Terry Lee^b
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^a University of Melbourne, 3052, Victoria, , Parkville, Australia ^b Bureau of Mineral Resources, G.P.O. Box 378 ACT, 2601, Canberra, Australia
Publisher: Australian Society of Exploration Geophysicists
Source: Exploration Geophysics, Volume 19, Issue 1-2, Mar 1988, p. 365 - 367
DOI: https://doi.org/10.1071/EG988365
- Published online: 01 Mar 1988

Abstract

The time-domain electromagnetic response of a polarizable sphere in a non-polarizable host rock is influenced more heavily by the chargeability m than by the time constant τ, in the range of delay times commonly observed. These results are obtained from a new mathematical model of the sphere and halfspace system, based on the earlier work of Lee (1983).

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References

Bhattacharyya, B. K. (1964)—‘Electromagnetic fields of a small loop antenna on the surface of a polarizable medium’, Geophysics24, 814–831.
Elliott, P. J. (1987)—‘Negative SIROTEM anomalies — Case studies’ (extended abstract), Exploration Geophysics18, 42–47.
Flis, M. (1987)—‘IP effects in 3-D TEM data — theory and case histories’ (extended abstract), Exploration Geophysics18, 55–58.
Lee, T. J. (1983)—‘The transient electromagnetic response of a conducting sphere in an imperfectly conducting half-space’, Geophysical Prospecting31, 766–781.
Lewis, R. J. G. & Lee, T. J. (1984)—‘The detection of induced polarization with a transient electromagnetic system’, Inst. Elect. and Electron. Eng. Trans. on Geoscience and Remote Sensing, GE-22, 69–80.
Pelton, W. H., Ward, S. H., Hallof, P. G., Sill, W. R. & Nelson, P. H. (1978)—‘Mineral discrimination and removal of inductive coupling with multifrequency IP’, Geophysics43, 588–609.
Raiche, A. P., Bennett, L. A., Clark, P. J. & Smith, R. J. (1985)—‘The use of Cole-Cole impedances to interpret the TEM response of layered earths’, Exploration Geophysics16, 271–272.
Weidelt, P. (1982)—‘Response characteristics of coincident loop TEM systems’, Geophysics47, 1325–1330.

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Article Type: Research Article

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Time-Domain Electromagnetic Responses of a Polarizable Target

Abstract

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