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.
Nansen passport Nansen passport Nansen passports, originally and officially stateless persons passports, were internationally recognized refugee travel documents from 1922 to 1938, first issued by the League of Nations to stateless refugees. They quickly became known as "Nansen passports" for their promoter, the statesman and polar explorer Fridtjof Nansen. The end of World War I saw significant turmoil, leading to a refugee crisis. Numerous governments were toppled, and national borders were re-drawn, often along generally ethnic lines. Civil war broke out in some countries. Many people left their homes because of war or persecution or fear thereof. The upheaval resulted in many