Obrázok:Frozenground.gif
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Frozenground.gif (33KB, MIME : image/gif
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[edit] Summary
Distributions of permafrost in the Northern Hemisphere.
- purple region : permafrost
- blue regions : seasonally frozen ground (the soil is frozen for 15 days or more per year )
- pink regions : intermittently frozen ground ( the soil is frozen for fewer than 15 days per year )
- solid line : the average maximum extent of the seasonal snow cover
The original public domain NASA picture modified by me (-map legend, black background > white, smaller size).
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