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(Article of periodic en Anglais - 2004)

Document title

Thermokarst as a short-term permafrost disturbance, Central Yakutia

Authors(s) and Affiliation(s)

BROUCHKOV A. ; FUKUDA M. ; FEDOROV A. ; KONSTANTINOV P. ; IWAHANA G. ;

Abstract

In spite of current climatic warming, there is no noticeable increase in regional thermokarst in Central Yakutia. Periodic forest fires significantly increase soil thermal conductivity and progressive soil salinization is occurring; however, these are insufficient to cause thaw of the underlying icy sediments. Instead, active thermokarst should be regarded as a short-term catastrophic process. Use of the Kudryavtsev algorithm indicates that the depth of thaw beneath a water body in Central Yakutia can reach 8-10 m within 50 years, and 20+ m within 300 years. Field observations show that current thermokarst has a tendency for fast (5-10+ cm/year) subsidence

Source

Article of periodic

published at : Permafrost and periglacial processes / ISSN 1045-6740 / CODEN PEPPED

Editor : Wiley, Chichester - ROYAUME-UNI (1990)

Millesime : 2004, vol. 15, no1 [pp. 81-87]

Bibliographic references : 22 ref.

Collation : Illustration ;

Language

Anglais

Localisation

Laboratoire INTERGEO - Paris

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2004.
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