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palsa bog

palsa bog Boggy tundra, in which ground ice is partly responsible for the formation of peat hummocks up to 35 m long, 15 m wide, and 7 m high. Palsa bogs have a core of frozen peat and develop cyclically. The dark surface with pools of water provide insulation and prevent snow from lying, causing the bog to grow; it develops a cover of lichen, giving it a high albedo; it erodes as the surface becomes unstable; the erosion reveals peat, which is dark and reduces the albedo, causing the bog to warm, leading to melting; a pool forms and the sequence begins again. Palsa bogs are circumpolar in distribution and are apparently subfossil.

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palsa bog

palsa bog Boggy tundra, in which ground ice is partly responsible for the formation of peat hummocks up to 35 m long, 15 m wide, and 7 m high. They are circumpolar in distribution and are apparently subfossil features which are now being degraded.

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"palsa bog." A Dictionary of Plant Sciences. . Encyclopedia.com. 16 Nov. 2018 <https://www.encyclopedia.com>.

"palsa bog." A Dictionary of Plant Sciences. . Encyclopedia.com. (November 16, 2018). https://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/palsa-bog-0

"palsa bog." A Dictionary of Plant Sciences. . Retrieved November 16, 2018 from Encyclopedia.com: https://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/palsa-bog-0

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