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Permafrost
Permafrost occurs when the ground remains at or below a temperature of 0oC for a minimum period of two ...
Abstract
Permafrost occurs when the ground remains at or below a temperature of 0oC for a minimum period of two years. Permafrost occurs not only at high latitudes but also at high altitudes. Almost all of the soil moisture in permafrost occurs in the form of ground ice, which in turn occurs in several different forms. The quantity of ice in the ground varies widely. Permafrost and ground ice have had significant effects on the economic development of the North. It affects the energy and mining industries, as well as the construction of modern settlements and infrastructure elements such as roads, railways, airfields, and utilities.
Other Maps in this Series:
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- Plant Hardiness Zones Map | Read about this map
- Relief Map | Read about this map
- World Heritage Sites Map | Read about this map
- Surficial Materials Map | Read about this map
- Physiographic Regions Map | Read about this map
- Shield Physiographic Regions Map | Read about this map
- Borderlands: Arctic Physiographic Regions Map | Read about this map
- Borderlands: Cordilleran Physiographic Region Map | Read about this map
- Borderlands: Interior Plains Physiographic Region Map | Read about this map
- Borderlands: Eastern Physiographic Regions Map | Read about this map
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