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Next: Downward continuation Up: Migration in complex areas Previous: Problems with Kirchhoff methods

Downward-continuation migration methods

Recent advances in computing power make it practical for us to use downward-continuation methods that are more computationally expensive than Kirchhoff methods. () showed that wave equation methods do not suffer from any of the artifacts related to multipathing that are seen in the offset domain or the artifacts seen in angle-domain Kirchhoff methods. In this section, I will explain how I perform migration with downward continuation and how I generate angle-domain common image gathers (ADCIGs) through slant stacking.