VAZ Tool Overview

Process name “VAZ Tool”

Manipulates the azimuthal velocity data in a VAZ parameter table. The user can:

1) Select velocities from a single azimuth
2) Output a VEL table that is the average for all azimuthal velocities
3) Perform standard deviation of the azimuthal velocities
4) Compute Ellipticity and Elliptical Azimuth from the azimuthal velocities.

5) Output Vfast and Vslow as VEL tables.

The tool fits a a least-squared ellipse algorithm to the azimuthal velocites at every trace and sample. This tool can be used to output Ellipticity which is the ratio between the fast and slow azimuthal velocities and Elliptical Azimuth which is the azimuth of the fast velocity.