Dependence of velocity on depth determined from traveltime curves of refracted waves in randomly inhomogeneous media
Abstract
The influence of local velocity inhomogeneities on the traveltimes of refracted waves and the dependence of velocity on depth determined from them was investigated. A clarification of the principal laws of wave propagation in media containing local velocity inhomogeneities is sought using a stochastic model of the medium in which the velocity values are separated into deterministic and random components. The dependence of apparent velocity on distance determined from the mean traveltime curve, differs from the similar dependence of the deterministic traveltime curve: near the source the apparent velocities are exaggerated by a value a little less than the contrast of the velocity inhomogeneities, whereas at greater distances the apparent velocities are understated.
 Publication:

USSR Report Earth Sciences JPRS UES
 Pub Date:
 May 1984
 Bibcode:
 1984RpESc.......39P
 Keywords:

 Flow Velocity;
 Inhomogeneity;
 Traveling Waves;
 Wave Propagation;
 Graphs (Charts);
 Mathematical Models;
 Statistical Analysis;
 Stochastic Processes