An FIO calculus for marine seismic imaging: folds and cross caps

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Title: An FIO calculus for marine seismic imaging: folds and cross caps
Author: Felea, Raluca; Greenleaf, Allan
Abstract: We consider a linearized inverse problem, arising in offshore seismic exploration, for an isotropic wave equation with sound speed assumed to be a small, singular perturbation of a smooth background. Under an assumption of at most fold caustics for the background, we identify the geometry of the canonical relation underlying the linearization, F, which is a Fourier integral operator, and establish a composition calculus sufficient to describe the normal operator F^*F. The resulting artifacts are 1/2 derivative smoother than in the case of a single-source seismic experiment. Refer to PDF file for exact formula.)
Description: Also archived at: arXiv:math.AP/0605774 v1 31 May 2006
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Date: 2006-07-14

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