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The Lomonosov Ridge ((ロシア語:Хребет Ломоносова)) is an unusual underwater ridge of continental crust in the Arctic Ocean. It spans between the New Siberian Islands over the central part of the ocean to Ellesmere Island of the Canadian Arctic Archipelago.〔CBC News. (Broken ship halts Russian expedition to claim Arctic seabed ). 25 July 2007. Retrieved 25 July 2007.〕 The width of the Lomonosov Ridge varies from . It rises above the deep seabed. The minimum depth of the ocean above the ridge is less than .〔GEUS 2014, page 12〕 Slopes of the ridge are relatively steep, broken up by canyons, and covered with layers of silt. The Lomonosov Ridge was first discovered by the Soviet high-latitude expeditions in 1948 and is named after Mikhail Lomonosov. The name was approved by the GEBCO Sub-Committee on Undersea Feature Names (SCUFN). ==Territorial dispute== In the 2000s, the geological structure of the ridge attracted international attention due to a 20 December 2001 official submission by the Russian Federation to the UN Commission on the Limits of the Continental Shelf in accordance with the United Nations Convention on the Law of the Sea (article 76, paragraph 8). The document proposed establishing new outer limits for the Russian continental shelf, beyond the previous zone, but within the Russian Arctic sector.〔(Outer limits of the continental shelf beyond from the baselines: Submissions to the Commission: Submission by the Russian Federation ) CLCS. United Nations〕 The territory claimed by Russia in the submission is a large portion of the Arctic reaching the North Pole.〔(Area of the continental shelf of the Russian Federation in the Arctic Ocean beyond 200-nautical-mile zone ) - borders of the zone are marked in red, territory claimed by Russia is shaded〕 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.〔 Danish scientists hope to prove that the ridge is an extension of Greenland,〔(Denmark hopes to claim the North Pole ) BBC News, 5 October 2004. Retrieved 10 November 2006.〕 and Denmark became another claimant to the area in 2014.〔 Canada, also a claimant, asserts that the ridge is an extension of its continental shelf. In April 2007, Canadian and Russian scientists were sent to map the ridge as a possible precedent for determining sovereignty over the area.〔 In late June 2007, Russian scientists claimed that the ridge is an extension of Russia's territory,〔(Kremlin lays claim to huge chunk of oil-rich North Pole ) The Guardian, 28 June 2007. Accessed 3 July 2007.〕 and in 2011 a Russian scientist said that Russia and Denmark claim different parts of the ridge and the claims are not conflicting.〔Staalesen, Atle. "(No dispute over Lomonosov Ridge )" ''Barents Observer'', 2 February 2011. Accessed: 17 December 2014.〕 Other sources indicate that some areas are disputed.〔"(Territorial Claims )" ''The Right Arctic''〕 Canada is expected to make further claims.〔GEUS 2014, page 17〕 Denmark and Russia have agreed to follow certain procedures when making claims.〔GEUS 2014, page 18〕 If the Danish claims are accepted by the Commission in summer 2015,〔 the distribution of areas may still be a matter of negotiation between claiming countries - a process which can take several years.〔Ramskov, Jens. "(Derfor gør Danmark nu krav på Nordpolen )" (In English ) ''Ingeniøren'', 15 December 2014. Accessed: 15 December 2014.〕 The rhetoric used in making claims is also subject to discussion.〔"(Rhetorial Claims )" ''The Right Arctic''〕 A 21-member UN arbitration panel is considering the competing claims, with the focus on the Lomonosov Ridge. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Lomonosov Ridge」の詳細全文を読む スポンサード リンク
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