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Type: Artigo de periódico
Title: Obliquity-correction imaging condition for reverse time migration
Author: Costa, JC
Neto, FAS
Alcantara, MRM
Schleicher, J
Novais, A
Abstract: The quality of seismic images obtained by reverse time migration (RTM) strongly depends on the imaging condition. We propose a new imaging condition that is motivated by stationary phase analysis of the classical crosscorrelation imaging condition. Its implementation requires the Poynting vector of the source and receiver wavefields at the imaging point. An obliquity correction is added to compensate for the reflector dip effect on amplitudes of RTM. Numerical experiments show that using an imaging condition with obliquity compensation improves reverse time migration by reducing backscattering artifacts and improving illumination compensation.
Country: EUA
Editor: Soc Exploration Geophysicists
Rights: aberto
Identifier DOI: 10.1190/1.3110589
Date Issue: 2009
Appears in Collections:Unicamp - Artigos e Outros Documentos

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