Wave Equation Moveout
, by Matthew J. Yedlin and Jeff Thorson
This paper presents a computational extension to the wave equation NMO technique presented by Thorson and Tedlin (SEP 25). It is demonstrated that by a simple change of variables, the p-stack can be converted into a convolution integral. What the wave equation NMO becomes, then, is simply the usual NMO stretch operation sandwiched between two linear filters which can be implemented essentially at little increased cost. That is, the process is one-dimensional and is applied separately to each trace.
The operator applied for the WENMO (wave equation NMO) is, as in SEP-25, a two-dimensional one. Therefore, upon application of the method, we shall see some of the types of distortion characteristics of wave propogation in two dimensions.
STANFORD