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Volume 26 Issue 4
Aug 2015
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Article Contents
Dongkai Wang, Siyou Tong, Huaishan Liu, Weiqiang Zhu. Notch effect and frequency compensation of dual-sensor OBC data in shallow water. Journal of Earth Science, 2015, 26(4): 508-514. doi: 10.1007/s12583-015-0559-2
Citation: Dongkai Wang, Siyou Tong, Huaishan Liu, Weiqiang Zhu. Notch effect and frequency compensation of dual-sensor OBC data in shallow water. Journal of Earth Science, 2015, 26(4): 508-514. doi: 10.1007/s12583-015-0559-2

Notch effect and frequency compensation of dual-sensor OBC data in shallow water

doi: 10.1007/s12583-015-0559-2
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  • Corresponding author: Siyou Tong, 463946232@qq.com
  • Received Date: 26 Aug 2014
  • Accepted Date: 26 Feb 2015
  • Publish Date: 12 Aug 2015
  • Reverberation is significant in shallow water and produces obvious notches in OBC spectra. 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.

     

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