Which mechanism causes coastal upwelling along western continental streams under specific wind conditions?

💡 Explanation

When wind blows along a western continental stream parallel to the coast, Ekman transport occurs because the Coriolis effect deflects the surface water offshore, causing deeper, nutrient-rich water to rise. Therefore, Ekman transport causes coastal upwelling rather than geostrophic flow, thermohaline circulation, or tidal forces, which have different primary mechanisms.

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