Which risk is amplified when increased stream power transports excessive alluvial sediment load across a subsiding floodplain?

💡 Explanation

When stream power is elevated and sediment load increased, alluvial deposition becomes unstable because the channel rapidly aggrades, leading to channel avulsion when the slope threshold is exceeded. Therefore accelerated localized avulsion risk occurs, rather than decreased recharge, reduced biodiversity or channel stabilization, which do not directly arise from rapid alluvial deposition.

• Which consequence results when a transform fault restricts sediment transport?
• Which risk dramatically intensifies when a coastal levee constructed on soft, compressible soil experiences prolonged tidal loading?
• Which outcome results when the hydraulic conductivity of loess decreases?
• Which mechanism causes the episodic tremor and slip (ETS) phenomenon along subduction zone faults?
• On steep volcanic slopes, which outcome results from pyroclastic flow deposition?
• Which risk increases when tectonic uplift causes increased incision within a broad alluvial plain?