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Chapter 10: Removal of Interference Patterns in Seismic Gathers

William J. Done
William J. Done
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January 01, 1999

The Karhunen-Loeve Transform (KLT) technique is frequently applied to a variety of seismic data processing problems. Initial seismic applications of the KLT (Hemon and Mace, 1978; Jones, 1985) were based on principal components analysis, usually on stacked data. A subset of the principal components obtained from the KLT of a seismic data set is used to reconstruct the data. Using the dominant principal components in the reconstruction emphasizes the lateral coherence which characterizes poststack seismic data. Using subdominant principal components during reconstruction can emphasize detail in the result by eliminating the strong lateral coherency carried by the high-order principal components. The usual approach to principal components analysis is also used to suppress random noise in the final reconstruction by always eliminating the low order principal components from any reconstructions. These low-order principal components contribute to the randomness in the data.

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Geophysical Developments Series

Covariance Analysis for Seismic Signal Processing

Society of Exploration Geophysicists
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Publication date:
January 01, 1999




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