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![]() | Evaluating the Stolt-stretch parameter | ![]() |
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As follows from the analysis of the reflection moveout in a vertically
heterogeneous transversely isotropic medium (Fomel and Grechka, 1996),
expression (17) for the Stolt stretch parameter will
remain valid in this case if the values of
and
are
computed according to equations
As we demonstrate in the next section, the method of cascaded migrations (Larner and Beasley, 1987) can improve the performance of Stolt migration in the case of variable velocity (Beasley et al., 1988). However, this method affects only the isotropic part of the model and cannot change the contribution of the anisotropic parameters. Therefore, in the anisotropic case, it is important to incorporate anisotropic parameters into the Stolt stretch correction.
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![]() | Evaluating the Stolt-stretch parameter | ![]() |
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