Which process increases collapse risk above karst regions?

💡 Explanation

Lowering the water table diminishes hydrostatic support, expanding existing cave systems by solutional widening and causing increased land subsidence because reduced buoyancy increases stress. This mechanical unloading therefore raises sinkhole collapse hazard rather than volcanic deposition's limited impact.

• Which process causes increased flood risk when increased impermeable coverage occurs on an alluvial fan?
• Which geological feature typically forms due to the lateral shearing motion at a transform plate boundary?
• Which geological hazard increases when permafrost thaws beneath Arctic coastlines?
• Which risk increases on a newly-formed volcanic island lacking vegetation?
• Which atmospheric effect sharply defines subtropical high-pressure zones around 30 degrees latitude?
• Which mechanism causes meromictic lakes to exhibit permanently stratified layers?