Concept information
Preferred term
PERMAFROST
Definition
- A layer of soil or bedrock at a variable depth beneath the surface of the earth in which the temperature has been below freezing continuously from a few to several thousands of years. (en)
Broader concept
- FROZEN GROUND (en)
Change note
- 2021-08-27 14:36:59.0 [tstevens] update Definition (A layer of soil or bedrock at a variable depth beneath the surface of the earth in which the temperature has been below freezing continuously from a few to several thousands of years.); update Definition (American Meteorological Society Glossary of Meteorology);
URI
https://gcmd.earthdata.nasa.gov/kms/concept/b6723314-3db7-4bdd-85ee-0b8507e6ae1b
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