Residual Migration After Migration with Non-Constant Velocity
, by Daniel Rothman
Residual migration is only wave-theoreticaly accurate when the initial
migration is performed with a constant velocity (Rothman, Levin, and Rocca,
198). Errors occurring in a residual migration after migration with v(z) are
expected to be related to similar errors in two-pass 3-D migration (Gibson,
Larner, and Levin, 1983). Unlike two-pass 3-D migration, however, the errors
that would result from a residual migration are, in principle, correctable.
This insight can be gained from the following simple, geometrical analysis.
STANFORD