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POLYNYAS [7 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2026-03-18

English

Subject field(s)
  • Glaciology
  • Oceanography
  • Hydrology and Hydrography
CONT

A polynya is a stretch of unfrozen sea in the middle of an ice sheet.... Polynyas form from wind blowing areas of ice away or from warm water welling up from lower layers of the ocean and melting the ice on the surface. Some polynyas are permanent fixtures, while some open and close seasonally.

OBS

... sub-mariners refer to [polynyas] as skylights.

OBS

polynyas; polynyi : plural.

OBS

polynia: term used at Natural Resources Canada - Earth Sciences Sector, and by Parks Canada.

Key term(s)
  • polynyas
  • polynyi

French

Domaine(s)
  • Glaciologie
  • Océanographie
  • Hydrologie et hydrographie
DEF

Espace de pleine eau enclos dans un environnement marin totalement glacé, formé par fragmentation et fonte de la banquise soit sous l'action de courants marins ascendants, soit sous l'effet de la chaleur atmosphérique, des vents et des courants de surface.

OBS

Les sous-mariniers [...] appellent [les polynies] des claires-voies.

OBS

polynie : terme en usage à Ressources naturelles Canada - Secteur des sciences de la Terre, de même qu'à Parcs Canada.

OBS

polynie : désignation et définition publiées au Journal officiel de la République française le 3 octobre 2025.

Spanish

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

Volumen de agua englobada en la masa de hielo fijo, generalmente de rápida formación; este espacio permanece constante y generalmente tiene forma alargada.

Save record 1

Record 2 2021-02-12

English

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

Pack ice in which the concentration is 4/10 to 6/10, with many leads and polynyas, and the floes generally not in contact with one another.

French

Domaine(s)
  • Glaciologie
  • Hydrologie et hydrographie
  • Océanographie

Spanish

Save record 2

Record 3 2000-08-29

English

Subject field(s)
  • Ecology (General)
CONT

An oil blowout or oil spill in a polynya area could be particularly devastating to species with restricted winter distribution if the availability of undisturbed polynyas for feeding and breathing was critical to their continued survival.

French

Domaine(s)
  • Écologie (Généralités)

Spanish

Save record 3

Record 4 1988-01-21

English

Subject field(s)
  • Ecology (General)
  • Hydrology and Hydrography
CONT

Both the presence and absence of ice in the north have special biological significance. The focus in the following discussion will be on three ice-related phenomena-epontic(under ice) primary production, ice-edge ecosystems and polynyas.

French

Domaine(s)
  • Écologie (Généralités)
  • Hydrologie et hydrographie

Spanish

Save record 4

Record 5 1988-01-20

English

Subject field(s)
  • Environmental Studies and Analyses
  • Remote Sensing
CONT

In examining phenomena strongly influenced by climate and thus characterized by a high degree of spatial heterogeneity, advantage can be taken of more synoptic study techniques. For example, the latest advances in remote sensing techniques, in particular satellite imagery, have made possible the reliable identification of polynyas.

French

Domaine(s)
  • Études et analyses environnementales
  • Télédétection

Spanish

Save record 5

Record 6 1988-01-20

English

Subject field(s)
  • Ecology (General)
  • Environmental Studies and Analyses
CONT

In examining phenomena strongly influenced by climate and thus characterized by a high degree of spatial heterogeneity, advantage can be taken of more synoptic study techniques. For example, the latest advances in remote sensing techniques, in particular satellite imagery, have made possible the reliable identification of polynyas.

French

Domaine(s)
  • Écologie (Généralités)
  • Études et analyses environnementales

Spanish

Save record 6

Record 7 1988-01-19

English

Subject field(s)
  • Ecology (General)
  • Glaciology
CONT

Both the presence and absence of ice in the north have special biological significance. The focus in the following discussion will be on three ice-related phenomena--epontic(under ice) primary production, ice-edge ecosystems and polynyas.

French

Domaine(s)
  • Écologie (Généralités)
  • Glaciologie

Spanish

Save record 7

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