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← GeographyWhich risk increases when a lava dam's volume exceeds its yield strength?
A)Sudden breakout of a jökulhlaup✓
B)Deposition of stratified glacial till
C)Formation of a ventifact-dominated desert
D)Accelerated rates of frost weathering
💡 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.
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