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In some senses, demigration is marked as obsolete. Watch for register when choosing this word.
demigration
noun 2
Definitions
noun
1
emigration
put ourselves from the side of Eden, into the land of Nod, that is, of demigration?
2
the process of reversing seismic migration, transforming a depth-migrated (or time-migrated) image back into a simulated unmigrated seismic time section (data domain)
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