Which outcome arises from thermal expansion when permafrost degradation causes subsurface ice to melt disproportionately in a region?

💡 Explanation

Thermokarst landscapes arise through thaw settlement, because differential thawing and thermal expansion near the surface causes ground subsidence to happen through the mechanism of cryogenic weathering. Therefore, sinkholes are formed, rather than stabilization because of positive feedback loops due to albedo effects.

• Which outcome occurs when excessive agricultural irrigation destabilizes poorly consolidated loess deposits?
• Which process accelerates cave formation by removing CO₂?
• Which outcome arises because deflation lowers sediment supply?
• Which outcome occurs when groundwater discharge is significantly reduced along a coastal barrier island?
• Which process contributes to the accelerated shrinking or disappearance of an oxbow lake in an arid climate?
• Which long-term outcome occurs from a dam blocking sediment transport?