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This paper presented a qualitative proof that focusing-effect
AVO/AVA (FEAVO/FEAVA) can be removed from the seismic image just by
a single pass of one-way wavefield extrapolation migration. Modeling
such data is more complicated. If just correct-velocity images of the
modeled data were needed, then the data could be modeled
with one-way exploding-reflector schemes. If data needed to be analyzed
before migration, or if incorrect velocities were used for migration,
then modeling should be done with a two-way scheme, or a two-pass,
one-way one.

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** Up:** Vlad: Focusing-effect AVA
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Stanford Exploration Project

5/3/2005