Which process dominates sediment sorting in a proglacial lake experiencing increased meltwater discharge?

💡 Explanation

When meltwater discharge increases, sediment-laden flows enter the proglacial lake because increased stream power delivers substantial material, which forms turbidity currents controlled by density differences caused by sediment concentration. Therefore gravity-driven turbidity currents are dominant, rather than settling, winnowing or cryosorting which demand different energy gradients and climate conditions.

• Which risk increases when a road embankment is constructed on discontinuous permafrost terrain?
• Which phenomenon is caused when the Coriolis effect deflects trade winds near the equator?
• Which process causes the formation of freshwater lakes in regions undergoing isostatic rebound following deglaciation?
• Which outcome arises when a major river's stream gradient decreases due to regional tectonic subsidence?
• Which mechanism significantly influences the prevailing wind direction in mid-latitude cyclones due to the Coriolis effect?
• Which mass wasting process is amplified within a cirque containing thawing permafrost?