Additional zones

Alternative definitions (1), class: vernacular (0)
Term: Additional zones
Definition: Additional zones present separate layers on an ice chart. If it is necessary to show the actual boundaries of zones of discontinuities (leads and fractures), changing hummock and ridge concentration, level ice, zones of different stages of melting or other additional characteristics, they are identified only by one characteristic.
Created 2022.03.08
Last Modified 2023.03.27
Contributed by GCW Glossary