The downward movement of fluid, especially in the sea, the atmosphere, or deep in the earth.
- One interpretation is that the ‘fast’ regions are simply colder downwellings and that slow regions are hotter upwellings in a compositionally homogeneous mantle.
- Convergence of these fronts led to downwelling of surface waters and upwelling of deep waters during the stratified period.
- Those upwellings and downwellings imply that at the surface there is a general southward wind between 0 and 30 lat, a northward wind between 30 and 60 lat, and a southward wind between 60 and 90 lat.
Characterized by or undergoing downwelling movement: downwelling mantle
More example sentences
- Anoxia is then triggered at t = 0 by reducing the oxygen concentration in the downwelling water by 50%.
- In this model run, anoxia is triggered by halving the O2 content of the downwelling water.
- In such instances, a rigid coupling of plates to convection cells would imply the unusual scenario of upwelling along an expanding ring, with a downwelling column inside it.
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