Constrained inversion of IP parameters from Airborne EM data

Andrea Viezzoli; Gianluca Fiandaca; Esben Auken; Anders V. Christiansen; Simonetta Sergio

doi:10.1071/ASEG2013ab274

ISSN: 2202-0586
E-ISSN:

oa Constrained inversion of IP parameters from Airborne EM data
Authors Andrea Viezzoli^a, Gianluca Fiandaca^b, Esben Auken^c, Anders V. Christiansen^d and Simonetta Sergio^e
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^a Aarhus Geophysics Aps, Aarhus C, Denmark, [email protected] ^b Hydrogeophysics Group (HGG), Aarhus C, Denmark, [email protected] ^c HGG, Aarhus C, Denmark, [email protected] ^d HGG, Aarhus C, Denmark, [email protected] ^e Aarhus Geophysics Aps, Aarhus C, Denmark, [email protected]
Publisher: Australian Society of Exploration Geophysicists
Source: ASEG Extended Abstracts, Volume 2013, Issue ASEG2013 - 23rd Geophysical Conference, Dec 2013, p. 1 - 4
DOI: https://doi.org/10.1071/ASEG2013ab274
- Published online: 01 Dec 2013

Abstract

The possibility of extracting IP information from AEM data never stopped being of interest to the scientific community and industry.

Synthetic studies on AEM data (SkyTEM and VTEM) for simple Cole Cole models over layered earth confirm that some of the Cole cole parameters can, in favourable conditions, be recovered from AEM data. They also provide useful insight into different ranges/combinations of resolvable parameters. The best results are obtained with high resistivity moderate to high chargeabilities, and higher S/N ratio of the AEM system.

We then apply to real data the proven approach of the Laterally and Spatially Constrained Inversion. Preliminary results show that, as expected, in some cases, some of the Cole Cole parameters can be resolved from actual AEM data.

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2026-01-12

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References

El-Kaliouby, H., El-Diwany, E., Hussain, S., Hashish, E., Rahim Bayoumy, A., 1997, Optimum negative resposnse of a coincident-loop electromagnetic system aboive a polarizable half space. Geophysics, 62, 75-79.
Fiandaca, G., Ramm J., Binley, A., Gazoty, A., Christiansen, A. V., Auken, E., 2012, Resolving spectral information from time domain induced polarization data through 2-D inversion, Geophysical Journal International.
Flis, M. Newman, G., Hohmann, G., 1989, Induced polarization effects in time domain electromagnetic measurements. Geophysics, 54, 514-523.
Kratzer, T. and Macnae, J., 2012, Induced polarization in airborne EM. Geophysics, 77(5), E317-E327.
Smith, R. and Klein, J., 1996. A special circumstance of airborne induced?polarization measurements. Geophysics, 61(1), 66-73.
Viezzoli A., Christiansen A.V., Auken E. and Sorensen K., 2008. Quasi-3D modelling of airborne TEM data by spatially constrained inversion. Geophysics, 73, 3 F105-F113.

/content/journals/10.1071/ASEG2013ab274

Article Type: Research Article

Keyword(s): AEM; constrained inversion; IP; SkyTEM; VTEM

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oa Constrained inversion of IP parameters from Airborne EM data

Abstract

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