Which outcome results when subsurface streams encounter permafrost?

💡 Explanation

Thermokarst formation happens because *Cryoturbation* mixes soil layers as subsurface streams accelerate permafrost thawing, creating voids. Subsidence, which causes more melting, follows; therefore, thermokarst appears rather than increased sediment load, which happens under temperate conditions.

• Which consequence results when incision decreases in an alluvial river?
• Which consequence results when high surface albedo interferes with Hadley cell formation?
• Which mechanism disrupts the Hadley cell circulation pattern during El Niño events?
• Which mechanism creates ribbon lakes within a glacial valley after ice retreat?
• Which outcome occurs in Arctic soils featuring construction when freeze-thaw cycles are amplified?
• Which consequence results when agricultural topsoil experiences prolonged weathering in high precipitation environments?