IS-006 Abstract OVERVIEW OF SOME COHERENT NOISE SEPARATION METHODS GERARD T. SCHUSTER AND JIANHUA YU University of Utah Salt Lake City Utah 84112 U.S.A Coherent noise in seismic data particularly ground roll PS converted waves multiples and near-source scattering are major problems amplified by near-surface velocity variations. A partial remedy to coherent noise is to separate it from the signal by a suitable transform mute out the noise in the transformed domain and then inverse transform to get the noise-reduced signal. I will review five coherent noise separation methods: FK linear   ¡ £ parabolic   ¡ £ hyperbolic  


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