Equilibrium line

Alternative definitions (7), class: vernacular (0)
Term: Equilibrium line
Definition: The line or zone on a glacier's surface where a year's ablation balances a year's accumulation (cf. Firn line). It is determined at the end of the ablation season, and commonly occurs at the boundary between superimposed ice (q.v.) and glacier ice.
Created 2022.03.08
Last Modified 2023.03.27
Contributed by GCW Glossary