Emergence velocity

Alternative definitions (1), class: vernacular (0)
Term: Emergence velocity
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.
Created 2022.03.08
Last Modified 2023.03.27
Contributed by GCW Glossary