Which mechanism causes the formation of oceanic 'garbage patches' within subtropical gyres?

💡 Explanation

When surface winds induce Ekman transport, surface water is moved towards the center of subtropical gyres because of the Coriolis effect, leading to convergence and accumulation of buoyant debris like plastics. Therefore Ekman transport concentrates buoyant debris, not subduction, vent plumes, or meltwater, which require different geological or hydrological processes.

• Which process explains the high concentration of composite volcanoes along the Pacific Ring of Fire coastline?
• Which outcome results when rapid river levee aggradation slows?
• Which mechanism primarily drives deep ocean thermohaline circulation patterns globally?
• Which outcome results when a tectonic uplift increases the gradient of a river feeding an alluvial fan?
• Which process primarily drives cirque erosion deepening the basal region during glacial activity?
• Which mechanism causes felsic magma to exhibit higher explosivity during volcanic eruptions?