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We have presented a recursive wave-equation method of migration
velocity analysis operating in the image domain. Our method is based on
linearization of the downward continuation operator that relates
perturbations in slowness to perturbations in the image. The fundamental
idea is to improve the quality of the slowness function by optimizing
the focusing of the migrated image.
This iterative method is stable and accurate when applied to a
synthetic dataset. It also converges to the solution without the need
for any regularization of the slowness model. We are currently in the
process of applying the method to the real seismic dataset used as an
example in this paper.

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Stanford Exploration Project

6/1/1999