SEG Technical Program Expanded Abstracts 2007 2007
DOI: 10.1190/1.2792848
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Modeling, migration and inversion with Gaussian beams, revisited

Abstract: Gaussian beams have been shown in some cases to provide smoother leading order asymptotic expansions of the solution of wave equations than classical ray theory provides. They do this through complexvalued traveltime functions that describe the propagating wave in a tube around some central ray. Quadratic exponential decay orthogonal to the central ray arising from the imaginary part of the traveltime provides a "skin depth" to the ray tube. Gaussian beams also have complex-valued amplitudes that avoid the van… Show more

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Cited by 6 publications
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References 14 publications
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