alas/alass
Link: http://w3id.org/permafrost/v/ipaglossary/t0015
Within: IPA Permafrost Glossary
Definition: A large depression of the ground surface produced by thawing of a large area of very thick and exceedingly ice-rich permafrost.
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alas/alass
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| Comment |
Typically, alasses are large depressions ranging from 0.5 to more than 100 km2 in area and from 5 to 20 m in depth. In the early stages of formation, a shallow (? 2 m) circular "alas lake" forms in a steep-sided depression. Enlargement and ultimate drainage of a number of such lakes may leave low interalas plateaus (termed "mezhalasye" in Russian). Ultimately, the plateaus disappear and mass wasting produces gentle side slopes. The term is of Yakut origin. The term is of Yakut origin. An analogous term of Nenets (northwestern Siberia) origin is "khasyrey".
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| dcterms:source |
https://doi.org/10.4224/20386561
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