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
- SNOW/ICE (en)
Change note
- 2021-08-27 14:35:03.0 [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/1f4cdbc4-0f65-4384-83c9-9422c280717d
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