Parallel implementation of 2-D prestack depth migration

We present an implementation of parallel prestack depth migration for 2-D Marmousi data. Our implementation is based on the three prestack depth migration methods: finite-difference method, split-step Fourier method and Fourier finite-difference method. In this article, a brief description of the three methods is given, and the performance of parallel implementation with Message Passing Interface (MPI) and the migration profiles of Marmousi data are presented. It is shown that the Fourier finite-difference migration produced more accurate images in the areas of large lateral velocity variations.