@article{eage:/content/journals/10.1111/j.1365-2478.1989.tb02233.x, author = "BENSON, ALVIN K.", title = "RESIDUAL DEPTH‐MIGRATION: ENHANCING DIPS1", journal= "Geophysical Prospecting", year = "1989", volume = "37", number = "7", pages = "771-779", doi = "https://doi.org/10.1111/j.1365-2478.1989.tb02233.x", url = "https://www.earthdoc.org/content/journals/10.1111/j.1365-2478.1989.tb02233.x", publisher = "European Association of Geoscientists & Engineers", issn = "1365-2478", type = "Journal Article", abstract = "ABSTRACT Residual migration can correct for migration done with the wrong velocity. The initial migration can be done with a less accurate, fast time‐migration algorithm followed by a residual depth‐migration operator. This combines the speed and accuracy of different migration schemes. The residual depth‐migration equation can be obtained by an appropriate transformation of a typical finite‐difference, depth‐migration equation. Since the cheaper, initial time‐migration has already partially migrated the data, the residual depth‐migration has less work to do than if the depth‐migration were done in a single step. As a result, the overall process has increased the speed and reduced the dip limitations associated with typical depth‐migration operators. Results on a steeply dipping model demonstrate the validity and usefulness of residual depth‐migration.", }