Which downslope movement results when permafrost thaws and the active layer loses shear strength?

💡 Explanation

When permafrost thaws, the active layer becomes saturated and loses strength because the ice cementing the sediment melts, causing solifluction. Therefore, solifluction lobe formation results, rather than crevassing, volcanism, or oxbow lake formation occurring due to brittle failure, tectonic, or fluvial processes respectively.

• Which outcome arises when a large earthquake ruptures a transform fault beneath a populated coastal city?
• Which cave formation increases when soluble rock dissolves?
• Which risk increases when thawing permafrost accelerates solifluction on a hillside?
• Which climatic effect results when thermohaline circulation weakens due to increased freshwater input in North Atlantic?
• Which process influences thermocline destabilization when increased freshwater runoff enters a subtropical gyre?
• Which outcome occurs as basalt undergoes spheroidal chemical weathering?