Lomonosov Ridge in the context of "Canyon"

The Danish Realm, officially the Kingdom of Denmark, or simply Denmark, is a sovereign state consisting of a collection of constituent territories united by the Constitutional Act, which applies to the entire territory. It consists of metropolitan Denmark (sometimes called "Denmark proper")—the kingdom's territory in continental Europe and its proximate islands—and the realm's two autonomous (but not sovereign) regions: the Faroe Islands in the North Atlantic and Greenland in North America. The relationship between the three parts of the kingdom is known as rigsfællesskabet (the unity of the realm, which has also been translated into the Danish Commonwealth or the United Kingdom of Denmark).

The Kingdom of Denmark is not a federation, but a concept encompassing the three autonomous legal systems of Denmark, the Faroe Islands and Greenland, united under its monarch. The Kingdom of Denmark is a unitary sovereign state. It has Arctic territorial claims in the Arctic Ocean: various sites near the North Pole (Lomonosov Ridge, Gakkel Ridge, and the Alpha-Mendeleev Ridge complex). The Kingdom of Denmark constitutionally encompasses the realm or the country, but the Faroe Islands and Greenland have an extended degree of autonomy to govern their relations.

The Alpha Ridge is a major volcanic ridge under the Arctic Ocean between the Canada Basin (off Ellesmere Island) and the Lomonosov Ridge. It was active during the formation of the Amerasian Basin. It was discovered in 1963. The highest elevation is about 2,700 m over the ocean floor. It is 200 to 450 km wide. The Alpha Ridge, Lomonosov Ridge, and Nansen-Gakkel Ridge are the three major ranges that divide the Arctic Ocean floor, running generally parallel to each other.

The 1983 Canadian Expedition to Study the Alpha Ridge (CESAR) seemed to establish that the Alpha Ridge is an extension of the continent from Ellesmere Island and hence there is a possibility that Canada may lay claim to the resource rights for the region, in particular for petroleum, according to the United Nations' Law of the Sea. There is no final conclusion to the issue so far, and part of the research planned for the European Drilling Research Icebreaker (Aurora Borealis) was drilling of the Alpha Ridge to collect more data.

The Mendeleev Ridge (Russian: Хребет Менделеева) or Mendeleev Rise is a broad ridge in the Arctic Ocean from the East Siberian Sea area of the Siberian Shelf to the central areas of the ocean. It is attached to the Alpha Ridge of the Amerasian Basin. It is named after Dmitri Mendeleyev.The Ridge was discovered in 1948 by Soviet high latitude expeditions. The name was approved by the Sub-Committee on Geographical Names and Nomenclature of Ocean Bottom Features (SCGN, now SCUFN) in April 1987.

The Mendeleev Ridge is instrumental in the Russian claim to the North pole. The territory claimed by Russia in the submission is a large portion of the Arctic Ocean, including the North Pole. One of the arguments was a statement, that the underwater Lomonosov Ridge and Mendeleev Ridge are extensions of the Eurasian continent. In 2002 the UN Commission neither rejected nor accepted the Russian proposal, recommending additional research.

The Arctic Basin (also North Polar Basin) is an oceanic basin in the Arctic Ocean, consisting of two main parts separated by the Lomonosov Ridge, a mid-ocean ridge between north Greenland and the New Siberian Islands. It is bordered by the continental shelves of Eurasia and North America.

• The Eurasian Basin (also Norwegian Basin) consists of the Nansen Basin (formerly: Fram Basin) and the Amundsen Basin
• The Amerasia Basin consists of the Canada Basin and the Makarov Basin

The Eurasian Basin, or Eurasia Basin, is one of the two major basins into which the Arctic Basin of the Arctic Ocean is split by the Lomonosov Ridge (other being the Amerasia Basin). The Eurasia Basin may be seen as an extension of the North Atlantic Basin through Fram Strait. It is further split by the mid-ocean Gakkel Ridge into the Nansen Basin and the Amundsen Basin. The latter basin is the deepest one of the Arctic Ocean and the geographic North Pole is located there.

The Eurasian Basin is bounded by Greenland, the Lomonosov Ridge, and the shelves of the Laptev Sea, Kara Sea and Barents Sea. The maximum depth within the Eurasian Basin is reached at the Litke Deep with 5449 m depth.

The Amerasia Basin, or Amerasian Basin, is one of the two major basins from which the Arctic Ocean can be subdivided (the other one being the Eurasian Basin). The triangular-shaped Amerasia Basin broadly extends from the Canadian Arctic Islands to the East Siberian Sea, and from Alaska to the Lomonosov Ridge. The basin can be further subdivided based on bathymetric features; these include the Canada Basin, the Makarov Basin, the Podvodnikov Basin, the Alpha-Mendeleev Ridge, and the Chukchi Plateau.

The Amerasia Basin is connected to the Pacific Ocean via the Bering Strait and to the North Atlantic Ocean via the Eurasia Basin and the Fram Strait. The continental shelf around the Amerasia Basin is very broad, averaging up to 342 mi (550 km) in width. The average depth of the Amerasia Basin is 12,960 ft (3,950 m), and it covers 2,500,000 km (970,000 sq mi).