Which phenomenon causes localized regions of downwelling within subtropical gyres in the ocean?

💡 Explanation

When surface waters converge within a gyre due to Ekman transport, caused by wind and the Coriolis effect, it forces water downwards, establishing a region of downwelling. Therefore Ekman transport convergence results, rather than coastal upwelling, plate subduction or atmospheric river influences, which operate via divergent mechanisms.

• Which geographical effect influences the angle of deflection due to the Coriolis effect on ocean currents strongest?
• Which phenomenon causes stratovolcano formation at subduction zone plate boundaries?
• Which risk increases for coastal fisheries in the eastern Pacific Ocean when El Niño suppresses upwelling?
• Which phenomenon frequently results when tectonic plates slide past each other along a transform fault?
• Which geological consequence results when differential stress exceeds rock strength along a transform fault?
• Which outcome accelerates atoll island erosion following vegetation loss?