Which effect accelerates downslope movement via solifluction in high-latitude permafrost regions?

💡 Explanation

When permafrost thaws due to surface warming, melting ground ice increases soil saturation and reduces shear strength, forming a slurry that flows downhill via solifluction due to gravity. Therefore, thawing of ground ice accelerates solifluction as opposed to increasing cohesion, needle ice, or evapotranspiration, which reduce or stabilize downslope movement.

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