Arctic Ocean deepest point is Litke Deep in the Eurasian Basin, at . The two major basins are further subdivided by ridges into the Canada Basin (between Alaska/Canada and the Alpha Ridge), Makarov Basin (between the Alpha and Lomonosov Ridges), Amundsen Basin (between Lomonosov and Gakkel ridges), and Nansen Basin (between the Gakkel Ridge and the continental shelf that includes the Franz Josef Land). In large parts of the Arctic Ocean, the top layer (about ) is of lower salinity and lower temperature than the rest. It remains relatively stable, because the salinity effect on density is bigger than the temperature effect.
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,