subpolar glacier
Quick Summary
The term "subpolar glacier" is a classification of mountain glaciers, alongside polar and temperate glaciers. These glaciers are characterized by their temperature, with subpolar glaciers consisting of subfreezing ice overlying temperate ice. This temperature profile means they are warm-based and actively slide on their beds.12
Mountain glaciers, in general, are perennial ice masses not associated with the Antarctic or Greenland ice sheets. They are typically confined to a path directing their movement, such as valleys or cirques. Their flow rates vary, with faster movement generally occurring at the surface and in the center of the glacier.21
Ask Britannica AI about this topic
Britannica doesn't have a full article on this topic, so we've curated a list of our relevant coverage.
glacierMass balance…for the entire year; a subpolar (or polythermal) glacier contains ice below the freezing temperature, except for surface melting in the summer and a basal layer of temperate ice; and a temperate glacier is at the melting temperature throughout its mass, but surface freezing occurs in winter. A polar or…
Read More…for the entire year; a subpolar (or polythermal) glacier contains ice below the freezing temperature, except for surface melting in the summer and a basal layer of temperate ice; and a temperate glacier is at the melting temperature throughout its mass, but surface freezing occurs in winter. A polar or…
Read More
glacierClassification of mountain glaciers…also are classified as polar, subpolar, or temperate and their surfaces by the occurrence of dry-snow, percolation, saturation, and superimposed-ice zones, as for ice sheets.
Read More…also are classified as polar, subpolar, or temperate and their surfaces by the occurrence of dry-snow, percolation, saturation, and superimposed-ice zones, as for ice sheets.
Read More