… The position of a glacier's equilibrium line varies greatly depending on the topography around the glacier and the distribution of the glacier, so the snow line determined based on each glacier's equilibrium line is called the orographic snowline. In contrast, the representative value of the average snow line of glaciers in a certain region is called the regional snowline or climatic snowline, and several approximation methods have been devised. For example, one method is to use the midpoint between the elevation of the mountains with glaciers and the elevation of the mountains without glaciers as the representative value (the mountain-top method). … *Some of the terminology that refers to "regional snowline" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
… 氷河の均衡線の位置は,氷河のまわりの地形や氷河の分布形状によって大きく変わるので,それぞれの氷河の均衡線にもとづいて決められた雪線は地形的雪線orographic snowlineとよばれる。これに対して,ある地域全体の氷河の平均的な雪線の代表値は広域的雪線regional snowlineまたは気候的雪線climatic snowlineとよばれ,いくつかの近似法が考案されている。たとえば,ある地域で氷河をもつ山の高度と,氷河をもたない山の高度との中間高度を代表値とする方法(山頂法)はその一つである。… ※「regional snowline」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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