Which outcome is accelerated as cirque glaciers thaw?

💡 Explanation

Permafrost thaws via cryogenic weathering because latent heat increases ground temperature, weakening the soil matrix; the process is called thermokarst development. Therefore, permafrost decays, rather than initiating orographic rain which needs adiabatic shifts. Thawing triggers positive feedback.

• Which mechanism drives surface ocean currents in the tropics due to Hadley cell dynamics?
• Which mechanism causes a graben valley to form within a continental rift zone involving normal faults?
• Which mechanism causes thermohaline circulation within a large endorheic lake basin experiencing rapid evaporation?
• Which risk increases when a warming climate thaws discontinuous permafrost beneath taiga forest?
• What outcome occurs when substantial tephra deposition blankets temperate glaciers?
• Which outcome results when an oceanic trench experiences locked fault creep?