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

Autor:	Siyou Tong, Huaishan Liu, Dong-Kai Wang, Wei-Qiang Zhu
Rok vydání:	2015
Předmět:	Waves and shallow water Reverberation Quality (physics) Acoustics General Earth and Planetary Sciences Geophone Frequency compensation Geotechnical engineering Wave equation Geology Seabed Convolution
Zdroj:	Journal of Earth Science. 26:508-514
ISSN:	1867-111X 1674-487X
DOI:	10.1007/s12583-015-0559-2
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::03376f3c67e86204dea37df133774a90 https://doi.org/10.1007/s12583-015-0559-2 Zobrazit plný text záznamu Full text from SpringerLink