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.
Fridtjof Nansen Central Oceanographic Laboratory in Christiania. Through his work on behalf of the League of Nations, Nansen helped to establish the principle of international responsibility for refugees. Immediately after his death the League set up the Nansen International Office for Refugees, a semi-autonomous body under the League's authority, to continue his work. The Nansen Office faced great difficulties, in part arising from the large numbers of refugees from the European dictatorships during the 1930s. Nevertheless, it secured the agreement of 14 countries (including a reluctant Great Britain) to the Refugee Convention of 1933. It also helped to repatriate 10,000 Armenians to