Generalisation of the transient field solution for a thin layer of finite thickness

B. Sh. Singer; A. Green

doi:10.1071/EG998195

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

Generalisation of the transient field solution for a thin layer of finite thickness
Authors B. Sh. Singer^a and A. Green^a
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^a Cooperative Research Centre for Australian Mineral Exploration Technologies, , Bldg. E5A, Macquarie University, , North Ryde, , NSW, 2109, , Australia, .
Publisher: Australian Society of Exploration Geophysicists
Source: Exploration Geophysics, Volume 29, Issue 1-2, Mar 1998, p. 195 - 197
DOI: https://doi.org/10.1071/EG998195
- Published online: 01 Mar 1998

Abstract

We derive a closed-form solution for the transient magnetic field developed by a magnetic source located above a thin conductive layer. The solution extends the solution found by J.C. Maxwell for a conductive thin sheet. In addition to Maxwell’s expression, the new solution explicitly depends on the thickness of the conductive layer. It can be used in a rapid inversion algorithm. The new solution allows an interpreter to estimate the thickness and conductivity of the conductive layer in addition to its conductance.

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1998-03-01

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References

Goldman, M.M., and Fitterman, D.V., 1987, Direct time-domain calculation of the transient response for a rectangular loop over a two-layer medium: Geophysics 52, 997–1006.
Macnae, J., and Lamontagne, Y., 1987, Imaging quasi-layered conductive structures by simple processing of transient electromagnetic data: Geophysics 52, 545–554.
Maxwell, J.C., 1981, A treatise on electricity and magnetism: Clarendon Press, 2.
Schmidt, A., 1918, Besitzt die tagliche erdmagnetische Schwankung in der Erdoberflache ein Potential: Physik Zeitsch 19, 349–355.
Vasseur and Weidelt., P., 1977, Bimodal electromagnetic induction in non-uniform thin sheet with application to the northern Pyrenean induction anomaly: Geophys. J. R. Astr. Soc. 51, 669–690.

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Article Type: Research Article

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Generalisation of the transient field solution for a thin layer of finite thickness

Abstract

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