| 摘要 |
A method for processing seismic data related to a structure under a body of water to generate an image of the structure includes receiving seismic data acquired using detectors disposed on a depth-varying profile streamer. The method further includes generating, from the seismic data, first traces that correspond to traces as recorded by the detectors and migrated to water surface, and second traces that correspond to traces as would be recorded by virtual detectors mirroring the detectors relative to the water surface and migrated to water surface. The method also includes generating third traces as a sum of corresponding ones among the first traces and second traces, and fourth traces as a difference of the corresponding ones of the first and second traces. The method then includes deghosting at least one of the first and second traces using positive and negative polarity portions of the third and fourth traces. |
