# Dictionary:X2-T2 analysis

Jump to navigation
Jump to search
.

{{#category_index:X|*X*^{2}-*T*^{2} analysis}}
A method of determining stacking velocity *V*_{s} and the depth of a reflector *z* from the arrival-time versus offset relationship:

If *x*^{2} is plotted against *t*^{2}, the slope gives the inverse of the velocity squared and the depth can be obtained from the intercept. Applies only to a constant velocity medium. Because of the variation of velocity with depth, *x*^{2}-*t*^{2} curves are not perfectly straight lines. For horizontal velocity layering and horizontal reflectors, the stacking velocity *V*_{s} is given by the slope at the origin. See also *velocity* and Sheriff and Geldart (1995, 86, 134).