Which risk increases with increased thermokarst lake expansion?

💡 Explanation

Positive feedback methane release increases because thermokarst accelerates decomposition in thawed permafrost via microbial action; therefore, more methane emissions result, rather than cryoturbation, which represents a localized soil churning.

• Which phenomenon amplifies seismic wave energy emanating upward through unconsolidated sediments?
• Which risk increases when glacial sediment accumulates at isostatic rebound points?
• Which outcome occurs when accumulated sediment compacts during subduction?
• Which topographic outcome during deglaciation influences cirque lake formation?
• Which outcome occurs when sediment load overwhelms a delta's outflow to a lake?
• Which outcome accelerates soil erosion in Arctic regions undergoing permafrost thaw?