Which outcome primarily arises when road construction obstructs downslope solifluction across Arctic permafrost?

💡 Explanation

Increased hydrostatic pressure results; blocking downslope movement of saturated soil via solifluction causes a water buildup behind the obstruction because the permafrost prevents drainage; therefore pressure increases, rather than reduction, and impacts road stability versus other options.

• Which mechanism causes the uplift of mountain ranges along convergent plate boundaries?
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• Which risk increases substantially as terminal alluvial fans coalesce?
• Which topographic outcome results as acidic runoff saturates carbonate bedrock?
• Which mechanism causes uplift and terracing within strike-slip fault zones during compressional stress?
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