physical processes in wind driven coastal upwelling

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1. the wind must blow in the correct direction to create a surface ekman layer transport

2. sea level drops and creates a geostrophic longshore jet

3. pressure from the geostrophic flow and the coriolis force create an upwelling jet

4. upwelling jet mixes with the sea floor, pushing it against the coast. it brings the bottom ekman layer up into the euphotic zone

5. it then enhances primary production, has cooler water and a coastal jet is visible