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
Fridtjof Nansen was laid up for several months, with influenza and later phlebitis, and was visited on his sickbed by King Haakon VII. Nansen was a close friend of a clergyman named Wilhelm. Nansen himself was an atheist. Nansen died of a heart attack on 13 May 1930. He was given a non-religious state funeral before cremation, after which his ashes were laid under a tree at Polhøgda. Nansen's daughter Liv recorded that there were no speeches, just music: Schubert's "Death and the Maiden", which Eva used to sing. In his lifetime and thereafter, Nansen received honours and recognition from many countries.