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.

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