… glissade: the technique of sliding down a slope of hard snow on shoes while controlling it with an ice axe or walking stick. crevasse: a fissure in a glacier. cairn: a pile of stones or a memorial mound. … From [Glacier]…The flow is caused by plastic deformation, and when water is present on the bottom due to frictional heat, the rate of basal sliding is said to be particularly high. When ice is subjected to excessive strain due to the flow, it breaks due to stretching, and deep cracks (crevasse) are formed. In the extreme case, an icefall is called an icefall. … *Some of the terminology explanations that mention "crevasse" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
… グリセードglissadeピッケル,杖などで制御しながら,堅雪の斜面を靴で滑り降りる技術。 クレバスcrevasse氷河上の亀裂。 ケルンcairn積み石,記念塚。… 【氷河】より…流動は塑性変形に由来するほか,摩擦熱などのために底面に水が存在するようなときは,底面滑りの割合がとくに大きいといわれている。流動に伴い氷が過度のひずみを受けると,伸張によって破壊され,深い割れ目クレバスcrevasse(フランス語)が形成される。その極端な場合が氷瀑(アイスフォールicefall)である。… ※「crevasse」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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