Home > Terms > English, UK (UE) > Firn line
Firn line
A line across the glacier, from edge to edge, that marks the transition between exposed glacier ice (below) and the snow-covered surface of a glacier (right). During the summer melt season, this line migrates up-glacier. At the end of the melt season the firn line separates the accumulation zone from the ablation zone.
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- Part of Speech: noun
- Synonym(s):
- Blossary:
- Industry/Domain: Water bodies
- Category: Glaciers
- Government Agency: USGS
- Product:
- Acronym-Abbreviation:
Other Languages:
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