Which mechanism causes deep ocean nutrient upwelling along coastlines experiencing offshore winds?

💡 Explanation

When offshore winds blow along a coastline, Ekman transport occurs because the Coriolis effect deflects the surface water 90 degrees, resulting in surface water moving away from the coast. Therefore Ekman transport-driven surface divergence induces upwelling, rather than pressure gradients, thermohaline overturning, or tidal mixing, which have distinct mechanistic origins affecting broader regions.

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