ray parameter

ray parameter

[′rā pə‚ram·əd·ər]
(geophysics)
A function p that is constant along a given seismic ray, given by p = rv -1 sin i, where r is the distance from the center O of the earth, v is the velocity, and i is the angle that the ray at a point P makes with the radius OP.
References in periodicals archive ?
[??] [not equal to] 0, the ray and the plane have only an intersection, and the ray parameter ([t.sub.i]) at the intersection is [t.sub.i] = -([[??].sub.1] x [??] - d)/(([[??].sub.2] - [[??].sub.1]).[??]).
In (2), p is the ray parameter (horizontal slowness) which stays constant along the ray path.
In the m-th layer, let us denote by [[alpha].sub.m] the incidence angle, p = (sin [[alpha].sub.m])/[v.sub.m] the ray parameter (identical in all layers),
(2000) presented another form of elastic impedance inversion by introducing a planar boundary between two layers of acoustic media, which depends on ray parameters. Whitcombe (2002) gave a normalized form of elastic impedance equation 7 (Appendix I).