Which outcome occurs when excessive sediment deposition obstructs proglacial lakes?

💡 Explanation

Episodic outburst floods occur due to increased hydrostatic pressure exerted on confining sediment due to the mechanism of ice damming. A jökulhlaup will occur because the ice dam eventually fails, therefore discharge increases abruptly rather than forming typical moraines or accelerating mineral dissolution.

• Which mechanism contributes to tsunami formation along subduction zone fault lines during earthquakes?
• Which mechanism causes increased flood risk when an alluvial fan experiences rapid urbanization?
• Which mechanism amplifies stream meandering when deforestation occurs on riparian slopes?
• Which process determines arc abandonment creating an oxbow lake after prolonged channel sinuosity?
• Which climatic outcome occurs when intertropical convergence zone weakens?
• Which outcome occurs following the moraine dam failure surrounding an alpine lake?