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 changes due to increased stratification limit upwelling?
• Which mechanism causes increased coastal upwelling during strong offshore wind events?
• Which risk increases on steep volcanic slopes with substantial pyroclastic deposits?
• Which mechanism causes a change in a geostrophic stream's flow direction influenced by Earth's rotation near the equator?
• Which process causes increased deposition of alluvial sediment at a river delta when average sea level rises steadily?
• Which outcome occurs when intense rainfall follows logging?