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WIND DRIVEN OCEANIC CIRCULATION [1 record]

Record 1 2005-05-27

English

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

Horizontal water motion of the ocean due to the stress exerted on its surface by the wind.

CONT

The main principles of wind-driven ocean circulation are as follows. 1. Wind stress causes transport of water in a thin Ekman surface layer. 2. If there is a curl to the wind stress, the Ekman layer transport will converge or diverge, causing downwelling or upwelling. 3. The downwelling or upwelling motions cause fluid columns to squash or stretch vertically, and this causes slow southward or northward flow due to conservation of potential vorticity. 4. The southward or northward flow is determined by the Sverdrup relationship, which links the N-S transport of water with the curl of the wind stress. In order to conserve mass, the water returns to its original position via a relatively thin boundary layer adjacent to the western edge of the basin.

Key term(s)
  • wind driven oceanic circulation

French

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

Mouvement horizontal de l'eau océanique dû à la contrainte exercée par le vent sur sa surface.

Spanish

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

Movimiento horizontal del agua oceánica debido a la tensión ejercida por el viento sobre su superficie.

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