paul sava


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© 2007 PC Sava

Page updated on
April 7, 2018

WEMVA sensitivity kernels


The two movies illustrate the frequency dependence of wavepaths. In the first case, no complicated multipathing occurs with increasing frequency. The wavepaths remain fairly similar, although the sensitivity kernels shrink with frequency. In the second case the wavepaths split at higher frequency from the relatively simple shape at low frequency as a result of the rugous top of salt.



This movie illustrates wavepaths from various parts of an image to a point at the surface. In some cases, the wavepaths are simple, but in other cases they split in various branches due to the rugous top of salt.


References

Sava, P.C., Biondi, B., 2004, Wave-equation migration velocity analysis - I: Theory, Geophysical Prospecting, v. 52, pp. 593-606. (PDF)
Sava, P.C., Biondi, B., 2004, Wave-equation migration velocity analysis - II: Subsalt imaging example, Geophysical Prospecting, v. 52, pp. 607-623. (PDF)
Sava, P.C., Biondi, B., Etgen, J., 2005, Wave-equation migration velocity analysis by focusing of diffractions and reflections, Geophysics, v. 70, no. 3, U19-U27. (PDF)
Sava, P.C., Vlad, I., 2008, Numeric implementation of wave-equation migration velocity analysis operators, Geophysics, v. 73, pp. VE145-VE159. (PDF)

Figures can be used freely for non-profit educational purposes by acknowledging their source:
© Paul Sava, Center for Wave Phenomena, Colorado School of Mines
http://www.mines.edu/~psava