Upwelling
replacement by deep water moving upwards of surface water driven offshore by wind
Upwelling is a rise of water from deep cold water towards the ocean surface.
![](http://178.128.105.246/content-http-upload.wikimedia.org/wikipedia/commons/thumb/3/30/Upwelling2.jpg/220px-Upwelling2.jpg)
Upwelling occurs in the open ocean and along coastlines. The reverse process, called “downwelling,” also occurs when wind causes surface water to build up along a coastline and the surface water eventually sinks toward the bottom.[1]
References
change- ↑ "What is upwelling?". NOAA Office of Ocean Exploration and Research. Retrieved 5 August 2021.