Which consequence results when undercutting of coastal sea stacks increases?

💡 Explanation

Accelerated stack collapse rate occurs because preferential erosion causes basal weakening of the stack. The mechanism is basal sapping. It undermines the structural integrity; therefore, stack failure increases rather than a stable base because continual wave action removes weathered material.

• Which risk increases when rapid snowmelt significantly raises water levels against a levee system protecting a floodplain?
• Which outcome results when intense, sustained winds cause prolonged deflation in arid, alluvial plains?
• Which consequence results when acid rain accelerates dissolution in karst regions?
• Which geological hazard is amplified when permafrost underneath pipeline infrastructure thaws?
• Which risk increases when a megathrust earthquake occurs along a subduction zone lacking strain partitioning?
• Which mechanism strengthens subtropical high-pressure zones due to Hadley cell dynamics?