Which mechanism initiates the accumulation of plastic debris within subtropical oceanic gyres?

💡 Explanation

When wind forces act on the ocean's surface, Ekman transport occurs because the Coriolis effect deflects the water, leading to the convergence of surface waters in the gyre center, accumulating floating debris. Therefore, Ekman transport initiates the accumulation, rather than tides, thermohaline currents, or direct wind trapping, which lack the convergence effect.

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