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University of Cambridge > Talks.cam > Isaac Newton Institute Seminar Series > Towards a more robust automatic velocity analysis method
Towards a more robust automatic velocity analysis methodAdd to your list(s) Download to your calendar using vCal
If you have a question about this talk, please contact Mustapha Amrani. Inverse Problems Co-author: C.-A. Lameloise (MINES ParisTech) In the context of seismic imaging, we analyse artefacts related to a classical objective functional, the “Differential Semblance Optimization” approach (DSO). This functional has been defined to automatically retrieve a velocity model needed to image complex structures with seismic waves. In practice, it may fail due to the presence of a number of artefacts. We propose two complementary approaches: first, we give evidence that a quantitative migration scheme is useful to compensate for uneven subsurface illumination. Second, we propose to slightly modify the objective function such that its gradient does not exhibit spurious oscillations for models containing interfaces or discontinuities. This talk is part of the Isaac Newton Institute Seminar Series series. This talk is included in these lists:
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