SEGJ Technical Conference

Application of seismic interferometry to OBS wide-angle reflection survey for crustal structure imaging

Abstract The seismic interferometry (SI) is one of the redatuming techniques to synthesize virtual source records by crosscorrelating the seismograms. By applying the SI to the OBS common receiver records, the redatumed data are corresponding to the reflection survey data that all the shot and receiver points are located at the original air-gun shot positions. The SI imaging with the OBS wide-angle reflection data is a powerful technique to obtain the reflection profiles from the sea bottom to the deeper part of the crustal structure without the spatial imaging gaps due to the sparse OBS deployment. In this study, we show an example of the SI imaging with the OBS wide-angle reflection data on 175 km-long survey line in the Nankai trough. Then we summarize utilization characteristics of the SI on the OBS survey.