What is upwelling?

Winds blowing across the ocean surface push water away. Water then rises up from beneath the surface to replace the water that was pushed away. This process is known as upwelling.

Upwelling - Wikipedia

Upwelling / Downwelling, Smaller Surface Circulations

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Upwelling and Downwelling - Toronto and Region Conservation Authority (TRCA)

9.5 Currents, Upwelling and Downwelling – Introduction to Oceanography

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Upwelling, oceanography

Scientists Say: Upwelling