Permafrost
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Ground, soil, or rock that remains at or below 0 degrees C for at least 2 years. It is defined on the basis of temperature and is not necessarily frozen. [Source: NRCS Glossary]
« Back to Glossary IndexGround, soil, or rock that remains at or below 0 degrees C for at least 2 years. It is defined on the basis of temperature and is not necessarily frozen. [Source: NRCS Glossary]
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