Second-year ice

Alternative definitions (7), class: vernacular (0)
Term: Second-year ice
Definition: Old ice which has survived only one summer's melt. Because it is thicker and less dense than first-year ice, it stands higher out of the water. In contrast to multi-year ice, summer melting produces a regular pattern of puddles. Bare patches and puddles are usually greenish-blue. The regular pattern of puddles produced during the melt season is only a feature of Arctic se ice. Melt water does not usually accumulate on the surface of Antarctic sea ice. Second-year ice is the most common form of old ice present in Antarctica.
Created 2022.03.08
Last Modified 2023.03.27
Contributed by GCW Glossary