A workflow for cooperative inversion of seismic and magnetotelluric data

Eric Takam-Takougang; Brett Harris; Anton Kepic

doi:10.1071/ASEG2015ab236

24th International Geophysical Conference and Exhibition – Geophysics and Geology Together for Discovery

ISSN: 2202-0586
E-ISSN:

oa A workflow for cooperative inversion of seismic and magnetotelluric data
Authors Eric Takam-Takougang^a, Brett Harris^b and Anton Kepic^c
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^a DET CRC, Curtin University, 26 Dick Perry Avenue, Kensington, , 6151, WA, [email protected] ^b DET CRC, Curtin University, 26 Dick Perry Avenue, Kensington, , 6151, WA, [email protected] ^c DET CRC, Curtin University, 26 Dick Perry Avenue, Kensington, , 6151, WA, [email protected]
Publisher: Australian Society of Exploration Geophysicists
Source: ASEG Extended Abstracts, Volume 2015, Issue 24th International Geophysical Conference and Exhibition – Geophysics and Geology Together for Discovery, Dec 2015, p. 1 - 4
DOI: https://doi.org/10.1071/ASEG2015ab236
- Published online: 01 Dec 2015

Abstract

We present a cooperative inversion approach for acoustic impedance using seismic and magnetotelluric data. In this approach, the magnetotelluric data, sensitive to the resistivity of rocks are used to get the large scale background spatial trends of the acoustic impedance model, while the seismic data are used to get the small-scale features. The connections between resistivity and elastic properties of rocks are obtained from petrophysical relationships derived from borehole data. Structural constraints derived from seismic are used to improve the magnetotelluric inversion. We present an application of this technique to synthetic data derived from previous interpretation of seismic and magnetotelluric models in a mineral province. The synthetic example shows how an improved result is obtained using our cooperative inversion workflow.

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References

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Eck, N.C., 2010, The Effects of contact metamorphism on the host rocks for Carlin-type mineralization at the Getchell Development, Nevada, USA. Master’s thesis, University of Nevada, Las Vegas.
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Jing, C., J. J. Carazzone, C. DiCaprio, G. Leahy, A. A. Mullur, R. L. Saltzer, J. Schmedes, and V. P. Singh, 2011, A hybrid joint-inversion scheme: SEG Technical Program Expanded Abstracts, 527, 2689-2693.
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Takam-Takougang, E. M., B. Harris, and A. Kepic, 2014a, Cooperative inversion of seismic and magnetotelluric data in complex areas: A workflow: SEG Expanded Abstracts, 31843189.
Takam-Takougang, E. M., B. Harris, and A. Kepic, 2014b, Cooperative inversion of seismic and magnetotelluric data: Application in mineral province: Geophysics, in review.

/content/journals/10.1071/ASEG2015ab236

Article Type: Research Article

Keyword(s): Cooperative; Inversion; magnetotelluric; mineral; seismic

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oa A workflow for cooperative inversion of seismic and magnetotelluric data

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