Leblanc and Morris (2001) presented a method for wavelet-domain filtering of potential-field data and compared it to Fourier and nonlinear filtering for denoising. Although we are not in disagreement with the main motivation of the paper, we must note that the authors neglected to make reference to two previous publications where the basic principles and methods of wavelet denoising (either global — as the only one used by the authors — or local) were applied to gravity data, vertical derivative of gravity data, and aeromagnetic data (Fedi and Quarta, 1998; Fedi et al., 2000). Note also that we presented our paper in 1997 at EGS. The abstract can be found in the published conference volume (Fedi and Quarta, 1997).

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