CONCLUSIONS

I have presented an efficient algorithm for calculating residual migration operators. This algorithm is generally applicable to both post-stack and pre-stack migration, and to both common shot and constant offset geometry. I have used examples to demonstrate the accuracy of the algorithm. However, the conclusions drawn from these examples are based on the assumptions of having accurate partial derivatives of traveltimes. To understand how the errors in the traveltime calculation would affect the results of the algorithm, more experiments need to be done.