Which mechanism causes surface-level convergence of water in the center of ocean gyres?

💡 Explanation

When wind stress acts on the ocean surface, Ekman transport occurs because surface water moves at an angle to the wind, resulting in net water movement converging centrally within gyres. Therefore the centre of gyres experiences convergence through Ekman transport, rather than density differences, earth's rotation or salinity differences.

• Which outcome occurs when sediment supply overwhelms lake subsidence?
• Which process triggers explosive volcanism when magma viscosity and dissolved gas content are both high?
• Which effect intensifies when freeze-thaw cycles erode bedrock within a glacial cirque?
• Which outcome is amplified when intense rainfall causes removal?
• Which mechanism accelerates stream erosion as a result of increased glacial meltwater discharge?
• Which spatial outcome results when desert vegetation stabilizes parabolic dune arms?