Review of three airborne EM systems

Shane Mulè; Roger Miller; Heather Carey; Ray Lockwood

doi:10.1071/ASEG2012ab352

ISSN: 2202-0586
E-ISSN:

oa Review of three airborne EM systems
Authors Shane Mulè^a, Roger Miller^b, Heather Carey^c and Ray Lockwood^d
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^a Fugro Airborne Surveys, Australia, 3/435 Scarborough Beach Road, WA, [email protected] ^b Fugro Airborne Surveys, Australia, 3/435 Scarborough Beach Road, WA, [email protected] ^c Fugro Airborne Surveys, Australia, 3/435 Scarborough Beach Road, WA, [email protected] ^d Fugro Airborne Surveys, Australia, 3/435 Scarborough Beach Road, WA, [email protected]
Publisher: Australian Society of Exploration Geophysicists
Source: ASEG Extended Abstracts, Volume 2012, Issue ASEG2012 - 22nd Geophysical Conference, Dec 2012, p. 1 - 5
DOI: https://doi.org/10.1071/ASEG2012ab352
- Published online: 01 Dec 2012

Abstract

Summary

Time Domain Airborne Electromagnetic (TDEM) systems are defined by a set of technical specifications, which include dipole moment, bandwidth, transmitter waveform and transmitter-receiver geometry.

Comprehensive analysis of these specifications is fundamental in understanding how they define the target response. For example, a system optimised for mapping deep, discrete ore bodies is not necessarily the ideal solution for mapping regolith where good vertical resolution may be required.

Data acquired by three TDEM systems developed by Fugro Airborne Surveys are used to demonstrate the effects that different system specifications have on the response of an exploration target.

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2012-12-01

2026-01-13

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References

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Brodie, R. C. 2010, Holistic Inversion of Airborne Electromagnetic Data, PHD Thesis, The Australian National University.
Combrinck, M., Mutton, P., & Lo, B. 2008, Detecting basement conductors in a conductive environment: an example from the Nepean mine VTEM survey, in AEM2008 - 5th International Conference on Airborne Electromagnetics.
Djeddi, M., Baker, H. A., & Tabbagh, A. 1998, Interpretation of VLF-EM anomalies of 3D structures by using linear filtering techniques, Annals of Geophysics; Vol 41, No 2 (1998).
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Lane, R., Green, A., Golding, C., Owers, M., Pik, P., Plunkett, C., Sattel, D., & Thorn, B. 2000, An example of 3D conductivity mapping using the TEMPEST airborne electromagnetic system, Exploration Geophysics, vol. 31, no. 2, pp. 162-172.
Lane, R., Brodie, R., & Fitzpatrick, A. 2004, Constrained Inversion of AEM data from the Lower Balonne Area, Southern Queensland, Australia, CRC LEME, Open File Report 163.
Liu, G. 1998, Effect of transmitter current waveform on airborne TEM response, Exploration Geophysics, vol. 29, no. 2, pp. 35-41.
Miller, R. V. & Finn, M. R. 2009, Interpretation of Airborne Electromagnetic and Magnetic Data: Yule River, Western Australia, Fugro Airborne Surveys (Unpublished).
Scherbarth, N. 2008, Annual report for the Nepean project Report C126/2007_2008A.
Smith, R. S. & Keating, P. B. 1996, The usefulness of multicomponent, time-domain airborne electromagnetic measurements, Geophysics, vol. 61, no. 1, pp. 74-81.

/content/journals/10.1071/ASEG2012ab352

Article Type: Research Article

Keyword(s): airborne electromagnetics; GEOTEM; HELITEM; TEMPEST; time domain electromagnetics

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