Conductivity-Depth Transform of GEOTEM Data

Peter Wolfgram; Gulcin Karlik

doi:10.1071/EG995179

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

Conductivity-Depth Transform of GEOTEM Data
Authors Peter Wolfgram^a and Gulcin Karlik^b
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^a Geoterrex Pty Ltd, 7-9 George Place Artarmon, , NSW, 2082, Phone: (02) 418 8077, Fax: (02) 418 8581 ^b Universitaet zu Koeln Inst. f. Geophysik and Meteorologie, Albertus-Magnus-Platz, 50923, Koeln, Germany
Publisher: Australian Society of Exploration Geophysicists
Source: Exploration Geophysics, Volume 26, Issue 2-3, Jun 1995, p. 179 - 185
DOI: https://doi.org/10.1071/EG995179
- Published online: 01 Jun 1995

Abstract

A conductivity-depth transform (CDT) of airborne transient electromagnetic (EM) data generates approximate sections and maps of the subsurface electrical conductivity variations. The resulting products have instrumentation parameters such as the transmitter waveform removed and can be directly integrated with other information from the survey area. Although approximate, the conductivity depth transform has a number of advantages over an exact inversion method. These are illustrated with two examples: a groundwater salinity study in Australia and a survey over the Bushman mineral deposit in Botswana.

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1995-06-01

2026-01-14

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References

Eaton, P.A. and Hohmann, G.W., 1989, A rapid inversion technique for transient electromagnetic soundings: Physics of the Earth and Planetary Interiors, 53, 384-404.
Macnae, J. and Lamontagne, Y., 1987, Imaging quasi-layered conductive structures by simple processing of transient electromagnetic data: Geophysics, 52, 545-554.
Macnae, J., Smith, R., Polzer, B.D., Lamontagne, Y., Klinkert, P.S., 1991, Conductivity depth imaging of airborne electromagnetic step-response data: Geophysics, 56, 102-114.
Nabighian, M.N., 1979, Quasi-static response of a conducting half-space: an approximate representation: Geophysics, 44, 1700-1705.

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Article Type: Research Article

Keyword(s): airborne; Botswana; Bushman deposit; conductivity; GEOTEM; groundwater salinity

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Conductivity-Depth Transform of GEOTEM Data

Abstract

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