Which risk increases when a lava dam's volume exceeds its yield strength?

💡 Explanation

A jökulhlaup risk rises because hydrostatic pressure increases on the unstable lava dam, triggering catastrophic release via pressure melting rather than gradual seepage. Therefore, a large outburst flood occurs, rather than localized thawing effects.

• Which mechanism influences stream patterns deflected eastwards near the poles?
• Which process causes the headwall of a cirque to steepen, leading to eventual enlargement?
• Which landform results from glacial equilibrium line reduction?
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• Which phenomenon causes the Rossby wave effect modulating jet stream patterns?
• Which geological outcome accelerates when acidic rainfall permeates karst regions?