also: びょうひょう
anchor ice; bottom-fast ice
Technical term for ice that forms and remains attached to the bottom of a river, lake, or shallow sea, often in cold climates.
In severe winter, anchor ice can develop on the riverbed.
Special equipment is needed to observe bottom-fast ice.
Standard kanji spelling; also read びょうひょう in technical contexts.
Sino-Japanese reading; used in some technical or older texts.
Mixed kanji-kana spelling; may be easier for learners.
Formed from 錨, “anchor,” and 氷, “ice,” describing ice attached or “anchored” to the bed beneath the water.