Artículos de revistas
Obliquity-correction imaging condition for reverse time migration
Registro en:
Geophysics. Soc Exploration Geophysicists, v. 74, n. 3, n. S57, n. S66, 2009.
0016-8033
WOS:000265884800023
10.1190/1.3110589
Autor
Costa, JC
Neto, FAS
Alcantara, MRM
Schleicher, J
Novais, A
Institución
Resumen
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. 74 3 S57 S66