thufur
Link: http://w3id.org/permafrost/v/ipaglossary/t0373
Within: IPA Permafrost Glossary
Definition: Perennial hummocks formed in either the active layer in permafrost areas, or in the seasonally frozen ground in non-permafrost areas, during freezing of the ground (see Figure 20d).
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thufur
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thufur en |
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| Comment |
Thufur (an Icelandic term, plural of "thufa") can be formed in the warmer part of the zone of discontinuous permafrost and also under conditions of maritime seasonal frost. The hummocks may be as much as 50 cm in height and 160 cm in diameter and can reform within 20 years following destruction. Growth is favoured by silty sediments, a maritime climate and reasonably good drainage.
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| dcterms:source |
https://doi.org/10.4224/20386561
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