Effects of scale and data source in periglacial modelling in a High Arctic environment, western Svalbard

Auteur(s) et Affiliation(s)

HJORT, J.

Dep. of Geography, Univ., Oulu, Finlande

Dep. of Geosciences and Geography, Univ., Helsinki, Finlande

ETZELMÜLLER, B.

Dep. of Geosciences, Univ., Oslo, Norvege

TOLGENSBAKK, J.

Dep. of Geosciences, Univ., Oslo, Norvege

Description :
To elucidate the effects of modelling scale and data source in distribution modelling, 2 periglacial features with differing physical requirements, sorted circles and solifluction lobes, were analysed on western Svalbard. For the comparison of modelling scales, data at 2 resolutions were used and a boosted regression tree (BRT) method was employed. To analyse the effect of data source, a generalised linear model (GLM) and a variation partitioning method were used to examine the unique and shared effects of the environmental variables on the distribution of sorted circles and solifluction lobes in a High Arctic landscape. Methodologically, novel statistical techniques and earth observation data provided an efficient combination for analysing periglacial landforms and processes in this remote region.

Type de document :
Article de périodique

Source :
Permafrost and periglacial processes, issn : 1045-6740, 2010, vol. 21, n°. 4, p. 345-354, nombre de pages : 10, Références bibliographiques : 64 ref.

Date :
2010

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

Langue :
Anglais