2-D and 3-D Joint Inversion of Seismic, MT and Gravity Data from the Faroe-Shetland Basin

Heincke, Björn, Moorkamp, Max, Jegen, Marion, Hobbs, R.W. and Berndt, Christian (2014) 2-D and 3-D Joint Inversion of Seismic, MT and Gravity Data from the Faroe-Shetland Basin [Talk] In: EAGE Conference 2014, 16.-19.07.2014, Amsterdam, Netherlands.

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Abstract

We present both 2-D and 3-D joint inversions of seismic tomography, MT and gravity data from Faroe-Shetland Basin. The objective is to evaluate how far petrophysically-linked joint inversions can improve both the imaging and the interpretation of the basalt flows and the underlying structures. The investigation area is License006, where the presence of a borehole (BRUGDAN) and a 3-D reflection seismic survey allow a direct comparison and, hence, an evaluation of the quality of the joint inversion models. For the 2-D and 3-D investigations we use different joint-inversion codes that have other strengths and weaknesses. We observe that results from both 2-D and 3-D joint inversions are more consistent than the ones from the corresponding individual inversions and the shape of the basaltic sequence and structures underneath are better resolved. The 2-D joint inversion in particular gives precise basalt thicknesses, whereas the 3-D joint inversion determines a two-dimensional high-resistivity anomaly that is oriented in the same direction as general regional trends of basement.

Document Type: Conference or Workshop Item (Talk)
Additional Information: Expanded abstract: Proceedings 76th EAGE Conference and Exhibition 2014
Keywords: 2-D; 3-D; Joint Inversion; Seismic; MT; Gravity Data; Faroe-Shetland
Research affiliation: OceanRep > GEOMAR > FB4 Dynamics of the Ocean Floor > FB4-GDY Marine Geodynamics
Refereed: Yes
DOI etc.: 10.3997/2214-4609.20141109
ISSN: 2214-4609
Date Deposited: 08 Jan 2015 13:44
Last Modified: 08 Jan 2015 13:44
URI: http://eprints.uni-kiel.de/id/eprint/26730

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