Which material accumulation consequence occurs within subtropical ocean gyres due to Ekman transport?

💡 Explanation

When wind-driven surface currents converge, Ekman transport causes water to move towards the center of subtropical gyres, concentrating floating materials because of the converging flow. Therefore plastic debris accumulates into large garbage patches, rather than hydrate destabilization, carbonate precipitation or silica dissolution at the seafloor from upwelling.

• Near river floodplains, which process results in loess accumulation?
• Which risk increases when prolonged heavy rainfall saturates materials of completed coastal levees?
• Which effect arises from differing velocities along a transform fault boundary?
• Which risk increases when a road embankment is constructed on discontinuous permafrost terrain?
• Which risk increases when rapid urbanization constricts a river channel with natural levees?
• Which adjustment occurs when alluvial river gradients decrease?