| Term: | Firn limit |
| Definition: |
The minimum elevation of firn lying on a glacier surface; each year's firn line marks a glacier's annual equilibrium line; also called firn line. NSIDCCryosphere
A synonym of firn line. IHPGlacierMassBalance The lower boundary of the zone of accumulation on a glacier where snow accumulates on an annual basis. Also called the Firn Line. PhysicalGeography GCW |