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PERMAFROST [1 record]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2012-05-24

English

Subject field(s)
  • Glaciology
  • Geomorphology and Geomorphogeny
  • Climatology
DEF

Any soil, subsoil, or other surficial deposit, or even bedrock, occurring in arctic, subarctic, and alpine regions at a variable depth beneath the Earth's surface in which a temperature below freezing has existed continuously for a long time (from two years to tens of thousands of years).

OBS

permafrost; pergelisol. ... It exists where summer heating fails to reach the base of the layer of frozen ground.

OBS

permafrost: term used by Parks Canada.

OBS

permafrost; pergelisol; perennially frozen ground: terms used at Natural Resources Canada - Earth Sciences Sector.

French

Domaine(s)
  • Glaciologie
  • Géomorphologie et géomorphogénie
  • Climatologie
DEF

Couche de sol ou de roches, à une profondeur variable sous la surface, dans laquelle la température a été continuellement inférieure à 0 °C pendant au moins quelques années.

CONT

Le pergélisol est [...] un terrain en état de gel permanent. Il comprend la glace de sol pérenne, mais exclut les glaciers et les glaces flottantes.

OBS

pergélisol [...] Il existe là où le réchauffement estival n'atteint pas la base de la couche de sol gelé.

OBS

pergélisol : terme en usage à Parcs Canada.

OBS

pergélisol : terme uniformisé par le Groupe de travail de terminologie du génie.

OBS

pergélisol; permagel; permafrost : termes en usage à Ressources naturelles Canada - Secteur des sciences de la Terre.

Spanish

Campo(s) temático(s)
  • Glaciología
  • Geomorfología y geomorfogénesis
  • Climatología
DEF

Suelo congelado permanentemente, cuya superficie se puede deshelar en verano provocando solifluxión.

OBS

Existe en aquellos lugares en donde el calentamiento estival no llega a la base del suelo helado.

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