Which outcome occurs when sediment-laden flows decelerate at a break in slope?

💡 Explanation

Alluvial fans form because a decrease in flow velocity causes sediment deposition. This is known as sediment transport capacity reduction; therefore, deposition occurs preferentially at slope breaks, which form fan shapes because the carrying capacity suddenly decreases, rather than remaining in suspension.

• Which risk increases with increased thermokarst lake expansion?
• Which coastline change results when seasonal river sediment load exceeds longshore drift capacity?
• Which of these results downstream after increased sinkhole formation?
• Which soil horizon characteristic results from eluviation processes?
• Which ecological pattern consistently arises adjacent arid coastal regions as persistent offshore winds drive coastal upwelling?
• Which mineral depletion occurs during podzolization due to eluviation?