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Dark Nilas

Nilas is a thin, elastic layer of ice with a matte surface that forms from fracil ice on the sea surface under calm atmospheric and oceanic conditions . Ice growth occurs through the accumulation of rising ice crystals on the underside. Depending on the thickness, a distinction is made between dark nile (less than 5 cm) and light nile (between 5 and 10 cm).


  • Sea Ice Nomenclature . WMO No. 259, March 2014, 5th Session of JCOMM Expert Team on Sea Ice. ( PDF ; 8.27 MB; English, French, Russian, Spanish)
  • Frank Lindemann: Sediments in the Arctic Sea Ice. Entry, characterization and quantification (= Reports on Polar Research , Volume 283, ISSN  0176-5027 ). Alfred Wegener Institute for Polar and Marine Research, Bremerhaven 1998 (also: Kiel, University, dissertation, 1998), (PDF; 3.6 MB).

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