Full Tensor SQUID Gradiometer for airborne exploration

A Chwala; R Stolz; V Zakosarenko; L Fritzsch; M Schulz; A Rompel; L Polome; M Meyer; H G Meyer

doi:10.1071/ASEG2012ab296

ISSN: 2202-0586
E-ISSN:

oa Full Tensor SQUID Gradiometer for airborne exploration
Authors A Chwala^a, R Stolz^b, V Zakosarenko^c, L Fritzsch^d, M Schulz^e, A Rompel^f, L Polome^g, M Meyer^h and H G Meyerⁱ
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^a IPHT Jena, A Einstein Str 9 07745, Jena, Germany, [email protected] ^b IPHT Jena, A Einstein Str 9 07745, Jena, Germany, [email protected] ^c IPHT Jena, A Einstein Str 9 07745, Jena, Germany, [email protected] ^d IPHT Jena, A Einstein Str 9 07745, Jena, Germany, [email protected] ^e IPHT Jena, A Einstein Str 9 07745, Jena, Germany, [email protected] ^f Anglo Technical Services, 45 Main Street 2001, Johannesburg, South Africa, [email protected] ^g Spectrem Air Limited, PO Box 457 1748, Lanseria, South Africa, [email protected] ^h Supracon AG, Wildenbruchstr 15 07745, Jena, Germany, [email protected] ⁱ IPHT Jena, A Einstein Str 9 07745, Jena, Germany, [email protected]
Publisher: Australian Society of Exploration Geophysicists
Source: ASEG Extended Abstracts, Volume 2012, Issue ASEG2012 - 22nd Geophysical Conference, Dec 2012, p. 1 - 4
DOI: https://doi.org/10.1071/ASEG2012ab296
- Published online: 01 Dec 2012

Abstract

Summary

IPHT Jena and Supracon AG develop and fabricate full tensor magnetic gradiometer (FTMG) systems, based on low-temperature-superconducting (LTS) planar-type SQUID (Superconducting Quantum Interference Device) gradiometers of first order. The systems are operated by Spectrem Air Ltd., jointly owned by Anglo American and De Beers. This paper describes details of the system setup, data processing and achieved performance parameters.

The sensors work at 4.2 K in liquid helium. With a base length of only 3.5 cm a real gradient measurement is possible. With six gradiometer the full magnetic gradient tensor can be measured with redundancy, allowing for high system reliability and the application of enhanced noise reduction techniques.

The data of the FTMG system will allow for a 3D inversion for the underlying magnetic sources. Examples of 2D maps of tensor components with high spatial resolution are shown.

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2012-12-01

2026-01-15

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References

Schmidt, P.W. and D.A. Clark, Advantages of measuring the magnetic gradient tensor. Preview, 85, p. 26-30, 2000.
R. Stolz, L. Fritzsch, and H.-G. Meyer, LTS SQUID sensor with a new configuration, Superconductor Science and Technology, Vol. 12, pp. 806-808, 1999.

/content/journals/10.1071/ASEG2012ab296

Article Type: Research Article

Keyword(s): Gradiometry; Mineral Exploration; Potential Fields; SQUID

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oa Full Tensor SQUID Gradiometer for airborne exploration

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