noun
ice sheet
Refers to a large, thick, continental-scale ice mass, such as the Greenland or Antarctic ice sheet.
南極の氷床は、地球最大の淡水の貯蔵庫だ。
The Antarctic ice sheet is the largest reservoir of fresh water on Earth.
氷床の融解が海面上昇の一因となっている。
Melting of ice sheets is one cause of sea-level rise.