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Activate the command Utilities->Perform calculation on the velocity cube.

Info
titleThe *RMS* velocity cube is calculated according to the formula:

VRMSn = sqrt((Sum_i(Vi^2*Ti)/Sum_i(Ti)))

The Interval Velocity Cube is calculated according to Dix formula:

Vn = sqrt((VRMSn^2*Tn - VRMSn-1^2*Tn-1)/(Tn-Tn-1))

These calculated cubes will help the professional to understand the geology of the subsurface based on velocity changes. The below picture displays the RMS and Interval velocity cube in the lower viewports.

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