...Also, the surface soil becomes mushy and saturated with meltwater, slowly moving downward (geliflux). The freezing and fracturing action, and the removal of fractured material by meltwater and geliflux, cause erosion around the remaining snow, forming shallow depressions called snow niches or nivation hollows. This is the snow erosion caused by the presence of remaining snow. *Some of the terminology that refers to "nivation hollow" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…また融雪水で飽和されてどろどろになった表層の土壌は,下方に向かってゆっくりと移動する(ジェリフラクションgelifluction)。凍結破砕作用と,融雪水・ジェリフラクションによる破砕物質の除去によって,残雪の周囲では浸食が進み,雪窪(ゆきくぼ)snow niche,nivation hollowとよばれる浅い凹地が発達する。これが残雪の存在によってもたらされる雪食作用である。… ※「nivation hollow」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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