bn:00061649n
Noun Concept
Categories: People from Blagoveshchensk, Russian expatriates in China, Cryosphere, Geography of the Arctic, Geomorphology
EN
permafrost  Widespread Permafrost Zone  alpine permafrost  continuous permafrost  Continuous permafrost zone
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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