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Curvelet-based ground roll removal

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Title: Curvelet-based ground roll removal
Author: Yarham, Carson; Boeniger, Urs; Herrmann, Felix J.
Subject Keywords ground roll;curvelet;curvelet transform;block-coordinate relaxation;Bayesian Threshold;block solver
Issue Date: 2006
Publicly Available in cIRcle 2008-03-07
Publisher Society of Exploration Geophysicists
Citation: Yarham, Carson, Boeniger, Urs, Herrmann, Felix J. 2006. Curvelet-based ground roll removal. SEG Extended Abstracts.
Abstract: We have effectively identified and removed ground roll through a twostep process. The first step is to identify the major components of the ground roll through various methods including multiscale separation, directional or frequency filtering or by any other method that identifies the ground roll. Given this estimate for ground roll, the recorded signal is separated during the second step through a block-coordinate relaxation method that seeks the sparsest set for weighted curvelet coefficients of the ground roll and the sought-after reflectivity. The combination of these two methods allows us to separate out the ground roll signal while preserving the reflector information. Since our method is iterative, we have control of the separation process. We successfully tested our algorithm on a real data set with a complex ground roll and reflector structure.
Affiliation: Science, Faculty ofEarth and Ocean Sciences, Department of
URI: http://hdl.handle.net/2429/545
Peer Review Status: Unreviewed
Scholarly Level: Graduate

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