Term: Emergence velocity Class:  
 vernacular   (0%)
Created 6 June 2017
Last modified 6 June 2017
Contributed by GCW Glossary


Definition: The vertical component, when it is directed upward, of the glacier-flow velocity vector at the glacier surface, at a point fixed in space. When the component is directed downward, it is called the submergence velocity. The emergence velocity is related through the continuity equation to the climatic-basal mass balance and the rate of thickness change. The component is typically upward in the ablation zone and downward in the accumulation zone.  IHPGlacierMassBalance