Which feedback mechanism enhances cirque formation at high altitudes?

💡 Explanation

When differential weathering weakens the rock, freeze-thaw cycles mechanically erode the cirque walls, concentrating the erosive power. Therefore differential weathering enhances cirque formation, rather than albedo reduction, permafrost stabilization, or vegetation effects which influence different glacial processes.

• Which mechanism creates arid conditions around 30 degrees latitude within Hadley cells?
• Which gas emission significantly escalates as a continental plate subducts under another plate at extreme depth?
• Which process triggers the formation of oxbow lakes in alluvial plains?
• Which risk increases when thawing permafrost destabilizes coastal bluffs undergoing wave action?
• Which mechanism causes eastward deflection of geostrophic winds in the Northern Hemisphere?
• Which process causes coastal upwelling to cease temporarily along the Peruvian coast?