What are cold water upwellings?



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    A cold water upwelling is a phenomenon that happens when winds push surface water from the coasts of the ocean towards the open ocean. This results in a surface void that must be filled with deeper waters. This upwelling of cold deep water is filled with nutrients from the deep necessary for life. A similar effect happens on the equator, where ocean currents typically travel in opposite directions due to the Coriolis effect. This creates a surface void which gets filled with cold water from the deep.      

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