Reverberation is significant in shallow water and produces obvious notches in OBC spec- tra. It also degrades the quality of sections and increases the difficulty of processing and interpretation. This article present...Reverberation is significant in shallow water and produces obvious notches in OBC spec- tra. It also degrades the quality of sections and increases the difficulty of processing and interpretation. This article presents the relationship between notch, shooting depth, and seabed depth based on the seismic convolution model. Forward modelling based on wave equation theory is used to verify this relationship. Dual-sensor summation is applied to suppress receiver-side multiples and remove notches according to the opposite response of geophones and hydrophones to down-going wave fields based on a detailed analysis of the OBC technique. The good results obtained in practical applications reveal the effectiveness of this method.展开更多
基金supported by the National Natural Science Foundation of China(Nos.41176077 and 41074077)the Key Laboratory of Marine Hydrocarbon Resources and Environmental Geology,Ministry of Land and Resources of China(No.MRE201303)
文摘Reverberation is significant in shallow water and produces obvious notches in OBC spec- tra. It also degrades the quality of sections and increases the difficulty of processing and interpretation. This article presents the relationship between notch, shooting depth, and seabed depth based on the seismic convolution model. Forward modelling based on wave equation theory is used to verify this relationship. Dual-sensor summation is applied to suppress receiver-side multiples and remove notches according to the opposite response of geophones and hydrophones to down-going wave fields based on a detailed analysis of the OBC technique. The good results obtained in practical applications reveal the effectiveness of this method.
