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Science Keywords > EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > SNOW/ICE > PERMAFROST

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

Change note

  • 2021-08-27 14:45:56.0 [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/6a7eed90-327a-4609-b952-c9617445a1d1

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