prov:value
| - Bortfeld's equations, after some manipulation, give the P-wave reflection expressed as a function of depth, z, slowness, p, and midpoint location, Y: ##EQU16## ypp is a time integral of the usual reflection coefficient. p(z,Y) are the background or long-period P-wave velocity, S-wave velocity, and density expressed as functions of depth and midpoint location.
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