Wave-equation migration velocity analysis:
Episode II

Paul Sava and Biondo Biondi

paul@sep.stanford.edu, biondo@sep.stanford.edu

ABSTRACT

We elaborate the main points of the wave-equation migration velocity analysis method introduced in a previous report. We analyze its strengths and limitations, and illustrate them using a synthetic example. The inversion results confirm our original expectations, especially with regard to stability and robustness. The main difficulty in recovering a complete velocity perturbation is related to the Born approximation, which limits the amount of residual migration improvement on the seismic images at any one given step.