Evaluating the Stolt-stretch parameter

Conclusions

An explicit expression for the Stolt-stretch parameter, derived in this paper, allows us to achieve optimal accuracy when applying Stolt migration in vertically heterogeneous media.

Combining an optimal analytical choice for the Stolt-stretch parameter with the cascaded f-k migration approach, we manage to obtain time migration results comparable to Gazdag's phase-shift migration. The Stolt method is considerably more computer-efficient and remains accurate for steeply dipping events.