Concept information
Preferred term
permafrost
Definition
- Permafrost is any subsurface earth material that remains below 0 °C for at least two consecutive years, including the intervening summer. Currently, permafrost covers approximately 25% of the Northern Hemisphere land surface and approximately 25% of the Antarctic continent. [Source: Encyclopedia of Geography; Permafrost]
Broader concept
Belongs to group
URI
https://concepts.sagepub.com/social-science/concept/permafrost
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