bn:00061649n
Noun Concept
Categories: Montane ecology, Patterned grounds, 20th-century American geologists, 1900 births, Imperial Russian emigrants to the United States
EN
permafrost
EN
Ground that is permanently frozen WordNet 3.0
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EN
Permafrost is soil or underwater sediment which continuously remains below 0 °C for two years or more: the oldest permafrost had been continuously frozen for around 700,000 years. Wikipedia
Permanently frozen ground found in periglacial zones. Wikipedia Disambiguation
Soil frozen permanently Wikidata
Soil that stays in a frozen state for more than two years in a row. OmegaWiki
Permanently frozen ground, or a specific layer thereof. Wiktionary
Permanently frozen ground. Wiktionary (translation)
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