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Three-term amplitude-versus-offset (avo) inversion revisited by curvelet and wavelet transforms

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dc.contributor.author Hennenfent, Gilles
dc.contributor.author Herrmann, Felix J.
dc.date.accessioned 2008-03-27T18:46:25Z
dc.date.available 2008-03-27T18:46:25Z
dc.date.issued 2004
dc.identifier.citation Hennenfent, Gilles, Herrmann, Felix J. 2004. Three-term amplitude-versus-offset (avo) inversion revisited by curvelet and wavelet transforms. SEG Technical Program Expanded Abstracts pp. 211-214 en
dc.identifier.uri http://hdl.handle.net/2429/615
dc.description.abstract We present a new method to stabilize the three-term AVO inversion using Curvelet and Wavelet transforms. Curvelets are basis functions that effectively represent otherwise smooth objects having discontinuities along smooth curves. The applied formalism explores them to make the most of the continuity along reflectors in seismic images. Combined with Wavelets, Curvelets are used to denoise the data by penalizing high frequencies and small contributions in the AVO-cube. This approach is based on the idea that rapid amplitude changes along the ray-parameter axis are most likely due to noise. The AVO-inverse problem is linearized, formulated and solved for all (x, z) at once. Using densities and velocities of the Marmousi model to define the fluctuations in the elastic properties, the performance of the proposed method is studied and compared with the smoothing along the ray-parameter direction only. We show that our method better approximates the true data after the denoising step, especially when noise level increases. en
dc.format.extent 165082 bytes
dc.format.mimetype application/pdf
dc.language.iso eng en
dc.publisher Society of Exploration Geophysicists en
dc.subject AVO inversion en
dc.subject curvelet transform en
dc.subject wavelet transform en
dc.subject Marmousi en
dc.title Three-term amplitude-versus-offset (avo) inversion revisited by curvelet and wavelet transforms en
dc.type text en
dc.type.text conference Paper en
dc.description.affiliation Earth and Ocean Sciences, Dept. of (EOS), Dept of en
dc.description.reviewstatus en
dc.rights.copyright Herrmann, Felix J. en

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