Polythermal glacier

Alternative definitions (2), class: vernacular (0)
Term: Polythermal glacier
Definition: A glacier containing some cold ice and some temperate ice. Classically, as first described, a polythermal glacier has a basal layer of temperate ice overlain by a layer of cold ice (panel a in Figure 9), above which there may be a surface layer up to about 1015 m thick that warms to the melting point seasonally. See cold glacier, temperate glacier.
Created 2022.03.08
Last Modified 2023.03.27
Contributed by GCW Glossary