Ice island

Alternative definitions (6), class: vernacular (0)
Term: Ice island
Definition: A large piece of floating ice protruding about 5 m above sea-level, which has broken away from an Arctic ice shelf, having a thickness of 15-30 m and an area of from a few thousand square meters to 500 km2 or more, and usually characterized by a regularly undulating surface which gives it a ribbed appearance from the air. [Note: Antarctic use is slightly different and refers to a grounded part of a floating ice sheet which rises significantly higher than its surroundings, eg Butler Island. There are also more substantial features, eg the Lyddan Ice Rise.]
Created 2022.03.08
Last Modified 2023.03.27
Contributed by GCW Glossary