Permafrost aggradation caused by tephra accumulation over snow-covered surfaces : examples from the Hekla-2000 eruption in Iceland

Auteurs :
KELLERER-PIRKLBAUER, A.
FARBROT, H.
ETZELMÜLLER, B.

Description :
The aim of this paper is an analysis of tephra accumulation on a pre-eruption winter snow cover and its influence on permafrost aggradation. Based on multi-annual field observations at the Hekla volcano, southern Iceland, a conceptual model concerning the relationship between winter-fallen tephra and buried snow preservation is suggested. Furthermore, the relation of volcanic eruptions and potential preservation of buried snow in permafrost conditions on a global scale is discussed.


Type de document :
Article de périodique

Source :
Permafrost and periglacial processes, issn : 1045-6740, 2007, vol. 18, n°. 3, p. 269-284, nombre de pages : 16, Collation : Illustration, Références bibliographiques : 60 ref.

Date :
2007

Editeur :
Pays édition : Royaume-Uni, Chichester, Wiley