When a prolonged drought lowers the water table in karst regions with populated areas, which hazard's formation accelerates?

💡 Explanation

Lower water tables remove support for overlying sediment in cover-subsidence sinkholes; this loss of support enhances the FLUID TRANSPORT of fine sediments into voids in the dissolving limestone. That accelerates surface subsidence because sediment volume decreases rapidly, therefore sinkholes enlarge unexpectedly during drought, rather than other geotechnical risks.

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