noun
continental shelf
Geological term for the submerged border of a continent. The reading りくほう is rare and not commonly used.
日本の周辺には広い陸棚が広がっている。
A wide continental shelf extends around Japan.
陸棚の資源開発が進められている。
Resource development on the continental shelf is being promoted.
More common synonym for 'continental shelf'; 陸棚 is a shorter, somewhat technical variant.
Compound of 陸 (land) and 棚 (shelf), a calque of 'continental shelf'.