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Abstract

Summary

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.

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/content/papers/10.3997/2214-4609.20141109
2014-06-16
2020-07-06
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References

  1. Fliedner, M. M. and White, R. S.
    2003. Depth imaging of basalt flows in the Faeroe-Shetland Basin. Geophysical Journal International, 152:353–371.
    [Google Scholar]
  2. Gallagher, J. W. and Dromgoole, P. W.
    2007. Exploring below the basalt, offshore Faeroes: A case history of sub-basalt imaging. Petroleum Geoscience, 13:213–225.
    [Google Scholar]
  3. Heincke, B., Jegen, M., Moorkamp, M., Chen, J. and Hobbs, R.W.
    2010. Adaptive coupling strategy for simultaneous joint inversions that use petrophysical information as constraints, 80th annual SEG meeting, Expanded Abstracts, 29, 2805–2809.
    [Google Scholar]
  4. Moorkamp, M., Heincke, B., Jegen, M., Roberts, A. W. and Hobbs, R. W.
    2011. A framework for 3-D joint inversion of MT, gravity and seismic refraction data. Geophysical Journal International, 184:477–493.
    [Google Scholar]
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