noun
young ice
A technical term used in sea-ice classification; refers to ice in the transition stage between nilas and first-year ice, typically 5–20 cm thick.
板状軟氷は、海氷の分類でニラスと一年氷の間に位置する。
Young ice is positioned between nilas and first-year ice in sea-ice classification.
Compound of 板状 (board-shaped, plate-like) + 軟氷 (soft ice), describing the flat, flexible nature of young ice.