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:'' Redirected here: feet above sea level; AMSL means "above mean sea level", and may be used for heights specified in any units.'' Metres above mean sea level (MAMSL) or simply metres above sea level (MASL or m.a.s.l.) is a standard metric measurement in metres of the elevation of a location in reference to historic mean sea level; the determination of what actually constitutes mean sea level over time however, may be determined by other parameters, such as the effects of climate history and climate change, and may have differed in the past, as well as in the future, from that established by historic, modern, documented elevations. == Uses == Metres above sea level is the standard measurement of the elevation or altitude of: * a geographic location such as a town, mountain, or other landmark * the elevation of the top of a building or other structure * or the altitude of an airplane or other flying object. 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「Metres above sea level」の詳細全文を読む スポンサード リンク
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