Nunataks

prefLabel
  • Nunataks
definition
  • An exposed, often rocky element of a ridge, mountain, or peak not covered with ice or snow within (or at the edge of) an ice field or glacier. The term is typically used in areas where a permanent ice sheet is present. Nunataks present readily identifiable landmark reference points in glaciers or ice caps and are often named.
broader
Abstract from DBPedia
    A nunatak (from Inuit nunataq) is the summit or ridge of a mountain that protrudes from an ice field or glacier that otherwise covers most of the mountain or ridge. They are also called glacial islands. Examples are natural pyramidal peaks. When rounded by glacial action, smaller rock promontories may be referred to as rognons. The word is of Greenlandic origin and has been used in English since the 1870s.

    ヌナタクあるいはヌナータク（グリーンランド語: Nunataq、英: Nunatak）は、氷河地域に見られる地形の一種。氷河または氷床から頂部のみが突き出た山や丘のこと。岩石で構成された峰であり、氷下の岩石は氷食作用を受けるのに対し、ヌナタクにおいては凍結破砕作用が主になるなどの違いが見られる。 ヌナタクという言葉はグリーンランド語起源で、1870年代ごろから西洋で使われ始めた。

    (Source: http://dbpedia.org/resource/Nunatak)