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Suppression Of Sea-Floor Multiples: A Case Study From The Pletmos Basin
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 3rd SAGA Biennial Conference and Exhibition, Apr 1993, cp-224-00028
Abstract
Multiple suppression methods can be divided into three<br>categories:<br>(1) methods based on differential moveout<br>between the multiple and primary events;<br>(2) methods which make use of the periodicity of<br>multiple systems; and<br>(3) model-based methods based on "deriving" a<br>model of the multiples or primaries and using<br>subtraction or enhancement.<br>Synthetic data is used to compare several multiple<br>suppression methods including predictive deconvolution<br>in the r-p domain, and decomposition into principal<br>components via the Karhunen-Loeve transform. The<br>methods are also applied to seismic data from the<br>South African continental shelf, which contains both<br>sea-floor and inter-bed multiples.