The Alaskan Shelf
The Alaskan continental shelf
The Alaskan continental shelf extends 120 kilometres into the Beaufort Sea. This narrow shelf has a depth of 800 metres and is marked by canyons and channels. Closer to shore, this shelf is covered with ice-gouges, produced by the grounding of very deep sea-ice and ice islands, both of which travel along the shelf from east to west, carried by a clockwise current.