Periglacial landscapes experience intense frosts during winter and snow-free ground during the summer.
Frost action is a key process. It causes weathering, heaving and thrusting, mass displacement, and cracking.
Frost creep and gelifluction dominate mass movements. Nivation combines several processes to form hollows under snow patches.
Fluvial and aeolian action may also be very effective land-formers in periglacial environments.
Periglacial landforms, some of them bizarre,include ground-ice landforms, ground-ice degradation landforms, and landforms resulting from seasonal freezing and thawing.
Human activities in periglacial environments and global warming are leading to permafrost degradation and the formation of thermokarst.
Periglacial landscapes experience intense frosts during winter and snow-free ground during the summer.Frost action is a key process. It causes weathering, heaving and thrusting, mass displacement, and cracking.Frost creep and gelifluction dominate mass movements. Nivation combines several processes to form hollows under snow patches.Fluvial and aeolian action may also be very effective land-formers in periglacial environments.Periglacial landforms, some of them bizarre,include ground-ice landforms, ground-ice degradation landforms, and landforms resulting from seasonal freezing and thawing.Human activities in periglacial environments and global warming are leading to permafrost degradation and the formation of thermokarst.
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