Which outcome occurs when heavy rainfall saturates unstable overburden above karst bedrock?

💡 Explanation

Increased saturation raises pore water pressure, thereby reducing effective stress, and thus leading to soil weakening according to the mechanism of effective stress reduction. Therefore, sinkhole collapse becomes more likely because of the decreased soil strength rather than immediate alteration of the aquifer or bedrock.

• Which mechanism causes increased surface water temperatures during El Niño events in the Pacific Ocean?
• Which outcome occurs when thermokarst lake expansion destabilizes Arctic pipeline supports embedded within permafrost?
• Which outcome is observed in a fjord experiencing upwelling?
• Which outcome occurs when fluids rise to earthquake hypocenter?
• Which consequence results when intense weathering causes heightened leaching in coastal mangrove swamps?
• Which effect is directly enhanced by increased upwelling along a coastline?