Which outcome is accelerated when levee construction reduces floodplain extent?

💡 Explanation

Increased channel bed sediment scour accelerates because the confinement increases flow velocity, therefore sediment transport capacity rises well above the stream equilibrium, rather than deposition on distant areas.

• Which outcome increases on coastlines with abundant stacks?
• Which outcome arises when significant bioturbation hinders pedogenesis?
• After rapid tephra deposition from Plinian eruptions, which outcome diminishes slope erodibility?
• Which outcome occurs when heavy pyroclastic flows enter lakes?
• Which mechanism causes anomalously high tsunami run-up following a megathrust earthquake?
• Which mechanism dictates soil-horizon development during glacial retreat?