loading...| Preferred Name | permafrost | |
| Synonyms |
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| Definitions |
An environmental material which is 1) composed primarily of soil or rock and included ice or organic material and 2) at or below the freezing point of water for two or more years. Ice is not always present, as may be in the case of nonporous bedrock, but it frequently occurs and it may be in amounts exceeding the potential hydraulic saturation of the ground material. |
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| ID |
http://purl.obolibrary.org/obo/ENVO_00000134 |
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| comment |
Ice is not always present, as may be in the case of nonporous bedrock, but it frequently occurs and it may be in amounts exceeding the potential hydraulic saturation of the ground material. |
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| database_cross_reference |
http://sweetontology.net/realmSoil/Permafrost https://en.wikipedia.org/wiki/Permafrost LTER:408 |
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| in subset |
envoPolar |
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| label |
permafrost |
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| prefixIRI |
ENVO:00000134 |
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| prefLabel |
permafrost |
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| 文本定义 |
An environmental material which is 1) composed primarily of soil or rock and included ice or organic material and 2) at or below the freezing point of water for two or more years. |
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| subClassOf |