TERMIUM Plus®

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

ANTIDUNE [1 record]

Record 1 2012-04-13

English

Subject field(s)
  • Geomorphology and Geomorphogeny
  • Hydrology and Hydrography
DEF

A mobile bed form which occurs at a stream velocity higher than that which forms dunes and plane beds.

OBS

Antidunes commonly move upstream.

French

Domaine(s)
  • Géomorphologie et géomorphogénie
  • Hydrologie et hydrographie
DEF

Dune formée dans des conditions d'écoulement rapide et qui se déplace dans le sens inverse du courant, par érosion de sa partie aval et sédimentation sur sa partie amont.

CONT

L'écoulement d'un fluide sur une couche de sédiment génère à la surface de celle-ci des reliefs (rides, dunes, antidunes) dont la dimension dépend de la vitesse du courant.

Spanish

Campo(s) temático(s)
  • Geomorfología y geomorfogénesis
  • Hidrología e hidrografía
DEF

Formaciones de lecho móvil en una corriente cuya velocidad es mayor que la de aquella que forma dunas y lechos planos.

OBS

Las antidunas se mueven normalmente aguas arriba.

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