The non-uniqueness of migration velocities

摘要: Typical 2D prestack seismic reflection data is not sufficient for resolving a laterally varying interval velocity field pre-stack depth migration. Different subsurface models can produce that identical or enough they cannot be distinguished. This ambiguity in the creates corresponding and structure of reflectors. As result, areas lateral variations, we rely on alone to resolve structure. The common sense geologic knowledge interpreter must incorporated info problem with use inversion constraints.