Frost heave on earth hummocks (pounus) in Finnish Lapland
Permafrost geomorphological systems in a changing global climate. Special issue
Auteurs :SEPPÄLÄ, M.
HUMLUM, O.
Description :
Frost heave, frost and snow depths on 2 earth hummocks (pounus) were monitored from 1992 to 2002 in Finnish Lapland. Frost heave was measured with motometers, frost depth with Gandahl's frost tube containing methylene blue, and snow depth with frost tubes above the ground surface. Frost heave values on the pounus did not differ much from those from the surrounding mire. During the early summer, slow thawing of frost keeps the surface of pounus higher than the surrounding mire surface and this supports the formation of earth hummocks.
Type de document :
Congrès
Source :
PACE21 Field Workshop, Longyearbyen, Norvege, 2004-09-08, Norsk geografisk tidsskrift, issn : 0029-1951, 2005, vol. 59, n°. 2, p. 171-176, nombre de pages : 6, Collation : Illustration, Références bibliographiques : 19 ref.
Date :
2005
Editeur :
Pays édition : Norvege, Oslo, Norske geografiske selskab ; Universitetsforlaget
Langue :
Anglais
Anglais
Droits :
Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI)
Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI)