Abstract
Z-99 GENERALIZED DIX EQUATIONS FOR A P097 Abstract 1 In the standard Dix (1955) equations the normal-incidence traveltimes and the RMS or NMO velocities for the PP reflections are used to estimate the interval velocity and thickness for homogeneous isotropic horizontal layers. For a stack of homogeneous horizontal layers which are transversely isotropic with a vertical symmetry axis the qPqP traveltimes (and the qPqSV traveltimes) depend on four parameters and thickness of each layer. Traveltime parameters can be estimated from the traveltimes of the qPqP and qPqSV reflected waves. Using semblance analysis (taner and Koehler 1969) the estimated qPqP traveltime
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