TERMIUM Plus®

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

COUCHE FROTTEMENT [2 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2003-08-01

English

Subject field(s)
  • Oceanography
DEF

The thin horizontal layer of water riding on top of the ocean that is affected by wind.

CONT

The stress of wind blowing across the sea causes a surface layer of water to move. Due to the low viscosity of water, this stress is not directly communicated to the ocean interior, but is balanced by the Coriolis force within a relatively thin surface layer, 10-200m thick. This layer is called the Ekman layer and the motion of this layer is called the Ekman transport.

CONT

The depth of the Ekman layer is on the order of a kilometer in the air and 100m in the ocean.

French

Domaine(s)
  • Océanographie
DEF

Épaisseur d'eau comprise entre la surface et la profondeur à laquelle le courant de dérive ne se fait plus sentir.

CONT

La partie supérieure de la CLA [(couche limite atmosphérique)] est appelée la couche d'Ekman. Dans cette région, la structure du vent est influencée à la fois par le frottement de l'air sur la surface terrestre, par la stratification thermique de l'air et par la force de Coriolis.

CONT

La profondeur de la couche [d'eau] entraînée par le vent ou couche d'Ekman, peut atteindre quelques dizaines de mètres.

Spanish

Campo(s) temático(s)
  • Oceanografía
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Record 2 1987-07-14

English

Subject field(s)
  • Road Construction
  • Airport Runways and Areas
CONT

The porous friction course consists of an open-graded, bituminous surface course composed of mineral aggregate and bituminous material, mixed in a central mixing plant, and placed on a prepared surface .... This friction course is deliberately designed not only to improve the skid-resistance but to reduce aquaplaning incidence by providing a "honeycomb" material to ensure a quick drainage of water from the pavement surface direct to the underlying impervious asphalt. The porous friction course is able, because of its porosity and durability, to maintain over a long period a constant and relatively high wet friction value.

French

Domaine(s)
  • Construction des voies de circulation
  • Pistes et aires d'aéroport

Spanish

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