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Generalized Image-Domain Inversion

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Published:
January 01, 2017

Abstract

Generalized Image-Domain Inversion: The gradient formula is derived for the generalized image objective function and the h-offset moveout curve in the extended image domain; in practice the objective function has an extra summation over all model points in the subsurface. The summation is over the subsurface offset indices. The result shows that Y(y) is a summation of three gradients: a low-wavenumber generalized semblance optimization (H-DSO) gradient, the intermediate-wavenumber gradient associated with differential semblance optimization (DSO), and a high-wavenumber gradient associated with full-waveform inversion (FWI). This image-domain gradient has multi-scale features similar to those of wave-equation-traveltime waveform inversion in the data domain, and it can be used to partly overcome the cycle-skipping problem with FWI.

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Contents

Society of Exploration Geophysicists

Seismic Inversion

Gerard T. Schuster
Gerard T. Schuster
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Society of Exploration Geophysicists
Volume
20
ISBN electronic:
9781560803423
Publication date:
January 01, 2017

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