Amerasia Basin Amerasia Basin and the rotation of the AAC. Amerasia Basin The Amerasia Basin, or Amerasian Basin, is one of the two major basins from which the Arctic Ocean can be subdivided (the other one being the Eurasian Basin). The triangular-shaped Amerasia Basin broadly extends from the Canadian Arctic Islands to the East Siberian Sea, and from Alaska to the Lomonosov Ridge. The basin can be further subdivided based on bathymetric features; these include the Canada Basin, the Makarov Basin, the Podvodnikov Basin, the Alpha-Mendeleev Ridge, and the Chukchi Plateau. The Amerasia Basin is connected to the Pacific Ocean via the
Nansen Island (Kara Sea) and some of its larger neighboring islands, such as Taymyra, Bonevi and Pilota Makhotkina, are deeply indented, with many crooked inlets. The sounds between this island and neighboring islands are also somewhat labyrinthic. Geologically all these coastal islands are a continuation of the Nordenskiöld Archipelago which lies further north. And sometimes Nansen Island is considered a part of it. Ostrov Vkhodnoy is a long islet located off Nansena's western end. The sea surrounding Nansen Island is covered with pack ice with some polynias during the long and bitter winters and there are many ice floes even in the summer. Nansen