TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

ICE MARGINAL LAKE [2 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2011-02-07

English

Subject field(s)
  • Hydrology and Hydrography
  • Glaciology
DEF

A lake formed beyond the limits of a glacier, in front of a glacier terminus.

CONT

glacial lake: A lake formed by glacier meltwater, located either at the front of a glacier (known as a proglacial lake), on the surface of a glacier (supraglacial lake), within the glacier (englacial lake) or at the glacier bed (subglacial lake).

OBS

ice-margin lake: term used at Natural Resources Canada - Earth Sciences Sector.

Key term(s)
  • ice marginal lake
  • ice margin lake

French

Domaine(s)
  • Hydrologie et hydrographie
  • Glaciologie
CONT

lac glaciaire : Lac formé par les eaux de fonte d'un glacier, situé à l'avant du front (lac proglaciaire), à la surface (lac supraglaciaire), à l'intérieur (lac intraglaciaire) ou au-dessous (lac sous-glaciaire) du glacier en question.

OBS

lac proglaciaire : terme en usage à Ressources naturelles Canada - Secteur des sciences de la Terre.

Spanish

Campo(s) temático(s)
  • Hidrología e hidrografía
  • Glaciología
DEF

[Lago] formado por las aguas de fusión en el frente de los glaciares.

CONT

[Un] lago proglaciar [es un] lago que se forma en las tierras descubiertas por el hielo del inlandsis que retrocede.

OBS

[Es el caso de] la mayor­ía de los lagos alpinos.

OBS

lago proglacial: No se debe confundir glacial (que está en zonas frías) con glaciar (relativo a una masa de hielo acumulada en las zonas de las cordilleras por encima del límite de las nieves perpetuas). Lamentablemente, las fuentes en Internet no reflejan esta diferencia y utilizan equívocamente "glacial".

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Record 2 2004-02-19

English

Subject field(s)
  • Geophysics
  • Erosion and Weathering (Geol.)
CONT

Patterned Ground Landforms. ... Thermokarst is a general term that refers to the many landforms that develop in response to the melting of ground ice ... Thawing permafrost creates uneven surfaces that primarily consist of subsidence features that collect water such as collapse scar bogs and small thermokarst lakes ... Two cases are presented to demonstrate the development of thermokarst features.

CONT

Thermokarst features are produced by thawing of ground ice when the climate improves or by fires, disturbance of vegetation, erection of heated buildings, etc. in present-day permafrost areas. Localised collapse produces irregular hollows often with small thaw lakes, which progressively increase in size and coalesce to form large lakes(alases). Enlargment of thaw lakes occurs by thermo-erosion of the permafrost on the shores; this leads to slumping and the sediment released is often spread across the lake floor. The thaw-induced slope failures(ground-ice slumps) cause lake marginal cliffs to retreat at rates of 10 m/year or more. Small thaw lakes often form at the intersection of ice wedge polygons, and when these are joined by water in the marginal furrows of the polygons they form "beaded drainage". Thermokarst features cause many engineering(ground stability) problems encountered in permafrost regions.

Key term(s)
  • thermokarst feature

French

Domaine(s)
  • Géophysique
  • Érosion et corrosion (Géologie)
DEF

Ensemble de formes en bosses et en creux attribuables à la fonte de la glace dans le sol.

Spanish

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