Arctic Ocean gas reserves, and the Chukchi shelf forms the border between Russian and the United States as stated in the USSR–USA Maritime Boundary Agreement. The whole area is subject to international territorial claims. An underwater ridge, the Lomonosov Ridge, divides the deep sea North Polar Basin into two oceanic basins: the Eurasian Basin, which is between deep, and the Amerasian Basin (sometimes called the North American, or Hyperborean Basin), which is about deep. The bathymetry of the ocean bottom is marked by fault block ridges, abyssal plains, ocean deeps, and basins. The average depth of the Arctic Ocean is . The
Hans Nansen Hans Nansen Hans Nansen (28 November 1598 – 12 November 1667) was a Danish statesman. The son of a burgher, Evert Nansen, he was born at Flensburg. He made several voyages to the White Sea and to places in northern Russia, and in 1621 entered the service of the thriving Danish Icelandic Company. For many years the whole trade of Iceland, which he frequently visited, passed through his hands, and he soon became equally well known at Glückstadt, the centre of the Iceland trade, and at Copenhagen. In February 1644, at the express desire of King Christian IV of Denmark,