Prestack Migration (and 3-D DMO)
Know that prestack migration can eliminate errors of conflicting dips.
Know that NMO, DMO, and poststack migration is considered by some to be prestack migration.
Identify the main methods of prestack migration.
Understand the iterative nature of prestack migrations that are based on CMP concepts.
Understand the process of GDMO-PSI.
Introduction to EOM (covered in detail in Chapter 11).
Know that constant velocity 3-D prestack migration may be accomplished with 2-D DMO and 3-D poststack migration.
Figures & Tables
This volume, SEG Course Notes Series No. 14, is designed to give the practicing geophysicist an understanding of the principles of prestack migration, presented with intuitive reasoning that avoids difficult math. Modeling with common-shot record and a constant-offset section are used to introduce prestack migration. New material in this revised edition of the original 1998 book includes algorithms that lead to and include Claerbout’s inversion method.