On a
glacier, the accumulation zone is the area above the
firn line, where snowfall accumulates and exceeds the losses from
ablation, (
melting,
evaporation, and
sublimation). The annual Glacier equilibrium line separates the accumulation and
ablation zone annually. The accumulation zone is also defined as the part of a glacier’s surface, usually at higher elevations, on which there is net accumulation of snow, which subsequently turns into firn and then glacier ice.
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(1) Region in a glacier where there is a surface net addition of snow. (2) Part of a hillslope that has a net gain of material leading to a progressive raising of the slope's surface.
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