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Type: Artigo de periódico
Title: Double path-integral migration velocity analysis: a real data example
Author: Costa, JC
Schleicher, J
Abstract: Path-integral imaging forms an image with no knowledge of the velocity model by summing over the migrated images obtained for a set of migration velocity models. Double path-integral imaging migration extracts the stationary velocities, i.e. those velocities at which common-image gathers align horizontally, as a byproduct. An application of the technique to a real data set demonstrates that quantitative information about the time migration velocity model can be determined by double path-integral migration velocity analysis. Migrated images using interpolations with different regularizations of the extracted velocities prove the high quality of the resulting time-migration velocity information. The so-obtained velocity model can then be used as a starting model for subsequent velocity analysis tools like migration tomography or other tomographic methods.
Subject: migration velocity analysis
path integral
double stack
seismic imaging
Country: Inglaterra
Editor: Iop Publishing Ltd
Citation: Journal Of Geophysics And Engineering. Iop Publishing Ltd, v. 8, n. 2, n. 154, n. 161, 2011.
Rights: fechado
Identifier DOI: 10.1088/1742-2132/8/2/003
Date Issue: 2011
Appears in Collections:Unicamp - Artigos e Outros Documentos

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