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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク List of Ultras of North America ： ウィキペディア英語版 List of Ultras of North America The following sortable tables list the 354 most topographically prominent mountain peaks of greater North America. Each of these summits has at least of topographic prominence. This article defines greater North America as the portion of the continental landmass of the Americas extending northward from Panama plus the islands surrounding that landmass. This article defines the islands of North America to include the coastal islands of North America, the islands of the Caribbean Sea, the Lucayan Archipelago, the Bermuda Islands, the Islands of Greenland (Kalaallit Nunaat), the islands of Northern Canada, the islands of Alaska, and the islands of the northeastern Pacific Ocean. The Hawaiian Islands are not included because they are considered part of Oceania. Topographic elevation is the vertical distance above the reference geoid, a mathematical model of the Earth's sea level as an equipotential gravitational surface. The topographic prominence of a summit is the elevation difference between that summit and the highest or key col to a higher summit. The topographic isolation of a summit is the minimum great-circle distance to a point of equal elevation. This article defines a significant summit as a summit with at least of topographic prominence, and a major summit as a summit with at least of topographic prominence. An ultra-prominent summit is a summit with at least of topographic prominence. There are 354 ultra-prominent summits in greater North America. All elevations in the 48 states of the contiguous United States include an elevation adjustment from the National Geodetic Vertical Datum of 1929 (NGVD 29) to the North American Vertical Datum of 1988 (NAVD 88). For further information, please see this United States National Geodetic Survey (note ). Of these 354 ultra-prominent summits, 142 are located in Canada, 122 in the United States, 39 in Greenland, 27 in México, 7 in Honduras, 6 in Guatemala, 4 in El Salvador, 3 in Costa Rica, 3 in the Dominican Republic, 2 in Haiti, 2 in Nicaragua, and one each in Jamaica, Cuba, and Panama. Seven of these summits lie on an international border. ==Greenland== (詳細はウィキペディア（Wikipedia）』 ■ウィキペディアで「List of Ultras of North America」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.