Which risk increases when warming temperatures degrade permafrost beneath Arctic infrastructure supports?

💡 Explanation

When permafrost thaws, soil loses its structural integrity because the ice within the soil melts, causing subsidence. Therefore structural failure due to soil subsidence risk increases, rather than methane release, albedo increase or dormant pathogen release, which depend on other mechanisms and compositions of the permafrost.

• Which risk increases when construction on permafrost causes thaw and subsequent subsidence?
• Which outcome occurs when a barrier island's dune system loses vegetation cover?
• Which process sustains unusually high productivity along western margins of a continental gyre where upwelling occurs?
• Which outcome occurs when vegetation removal destabilizes dunes?
• Which mechanism amplifies stream meandering on coastlines undergoing isostatic rebound due to melting glaciers?
• Which mechanism causes long-term cyclic uplift and subsidence along a strike-slip fault zone?