Volume 36 Number 8
  • E-ISSN: 1365-2478



The inductive transient electromagnetic method (TEM) shows good potential for the detection of metallic relics of historical interest, such as buried antique bells, Buddhist idols, or precious metal nuggets. The effectiveness of the method was investigated with analogue models, using transmitter‐receiver loop configurations with sizes or receiver spacings slightly different from those usually applied in earth resources exploration with the S system.

The analogue modelling results show that the location and depth of the buried treasure may be obtained from the S data. A solid metallic object such as an antique bell could be detected to a depth about 12 times greater than its size, and treasure consisting of separate metallic objects, such as gold nuggets, could be detected to a depth 5 times its linear dimensions with a transmitter current of ˜ 20 A.

In scaling down the dimensions of a target, its conductivity should be increased in order to preserve the same TEM conditions found in the field. However, since the buried treasure consists of gold or copper objects, it is not possible to properly scale the conductivity. Hence, in the field, the depth detection limit is expected to be greater than that derived from analogue modelling.


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  1. BARTEL, D.C. and HOHMANN, G.W.1985. Interpretation of Crone pulse electromagnetic data. Geophysics50, 1488–1499.
    [Google Scholar]
  2. BOYD, G.W. and WILES, C.J.1984. The Newmont drill‐hole electromagnetic pulse system. Examples from eastern Australia. Geophysics49, 949–956.
    [Google Scholar]
  3. BUSELLI, G.1980. Interpretation of SIROTEM data from Elura. Bulletin of the Australian Society of Exploration Geophysicists11, 264–271.
    [Google Scholar]
  4. BUSELLI, G.1984. SIROTEM analgoue modelling: loop configuration comparison. Unpublished report, CSIRO Division of Mineral Physics.
    [Google Scholar]
  5. BUSELLI, G.1985. Stratigraphic mapping applications of TEM. Exploration Geophysics16, 177–179.
    [Google Scholar]
  6. BUSELLI, G.
    , MCCRACKEN, K.G. and RUTTER, H. (EDS.) 1985. Manual for Sirotem Field Procedures and Data Interpretation.CSIRO, Australia .
    [Google Scholar]
  7. CORBYN, J.A.1980. Pulse induction metal detector. Wireless World (GB)86, 411–414.
    [Google Scholar]
  8. FRISCHKNECHT, F.C. and RAAB, P.V.1984. Time‐domain electromagnetic soundings at the Nevada test site, Nevada. Geophysics49, 981–992.
    [Google Scholar]
  9. LEE, S.K., KOO, J.H., CHO, D.H. and LIM, M.T.1984. Transient electromagnetic exploration of lead‐zinc sulphide mineral deposits in mine claim No. 57 of Cheonji sheet, Kyungsang‐bukdo, Korea. Journal of the Korean Institute of Mineral and Mining Engineers21, 197–208.
    [Google Scholar]
  10. MCCRACKEN, K.G., PIK, J.P. and HARRIS, R.W.1984. Noise in EM exploration systems. Exploration Geophysics15, 169–174.
    [Google Scholar]
  11. SINCLAIR, G.1948. Theory of models of electromagnetic systems. Proceedings of the Institute of Radio Engineers36, 1364–1370.
    [Google Scholar]
  12. SPIES, B.R.1976. The derivation of absolute units in electromagnetic scale modeling. Geophysics41, 1042–1047.
    [Google Scholar]
  13. SPIES, B.R.1980. One‐loop and two‐loop TEM response of the Elura deposit, Cobar, NSW. Bulletin of the Australian Society of Exploration Geophysicists11, 282–288.
    [Google Scholar]
  14. WARD, S.H.1967. The electromagnetic method. Mining Geophysics, Vol. II, 308–315. Society of Exploration Geophysicists.
    [Google Scholar]
  15. WEST, G.F., MACNAE, J.C. and LAMONTAGNE, Y.1984. A time‐domain electromagnetic system measuring the step response of the ground. Geophysics49, 1010–1026.
    [Google Scholar]
  16. YUM, Y.H.1984. Studies on Korean antique bells. Academy of Korea Studies, Publication No. 84–14, pp. 431.
  • Article Type: Research Article
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