stacking velocity

{{Short description|Seismological concept}}

{{dictdef|date=May 2023}}

In reflection seismology, stacking velocity, or Normal Moveout (NMO) velocity, is the value of the seismic velocity obtained from the best fit of the traveltime curve by a hyperbola.[http://www.glossary.oilfield.slb.com/Display.cfm?Term=stacking%20velocity Schlumberger Oilfield Glossary]{{failed verification|date=May 2013}}. The hyperbolic approximation to the traveltime curve (two-way travel time versus offset) is known as Normal moveout (NMO). The procedure of finding the best fit on common midpoint (CMP) seismic gathers is known as NMO velocity analysis.