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http://dx.doi.org/10.5916/jkosme.2008.32.8.1309

Noise Attenuation of Marine Seismic Data with a 2-D Wavelet Transform  

Kim, Jin-Hoo (동아대학교 에너지자원공학과)
Kim, Sung-Bo (동아대학교 해양자원연구소)
Kim, Hyun-Do (동아대학교 해양자원연구소)
Kim, Chan-Soo ((주)지오뷰)
Publication Information
Journal of Advanced Marine Engineering and Technology / v.32, no.8, 2008 , pp. 1309-1314 More about this Journal
Abstract
Seismic data is often contaminated with high-energy, spatially aliased noise, which has proven impractical to attenuate using Fourier techniques. Wavelet filtering, however, has proven capable of attacking several types of localized noise simultaneously regardless of their frequencies. In this study a 2-D stationary wavelet transform is used to decompose seismic data into its wavelet components. A threshold is applied to these coefficients to attenuate high amplitude noise, followed by an inverse transform to reconstruct the seismic trace. The stationary wavelet transform minimizes the phase-shift errors induced by thresholding that occur when the conventional discrete wavelet transform is used.
Keywords
Marine seismic survey; Wavelet transform; Noise; Attenuation; DWT;
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