stolt
A sketch of Stolt residual migration
Figure 1 |

In residual prestack Stolt migration (RPrSM), we attempt to correct
the effects of migrating with an inaccurate reference velocity by
applying a transformation to the data that have been transformed to the
Fourier domain (Figure 1). Supposing that the initial
migration was done with the velocity *v _{0}*, and that the correct
velocity is

The goal of RPrSM is to obtain *k*_{zm} from *k*_{z0}. If we use
the first equation of (4) to substitute in the second equation of (4), we obtain

(4) |

(5) |

Equation (6) represents the RPrSM equation in two dimensions. For post-stack data, the same equation takes the familiar form

(6) |

6/30/1999