Debris-flood reconstruction in a pre-alpine catchment in Switzerland based on tree-ring records of coniferous and broadleaved trees

Auteur(s) et Affiliation(s)

BOLLSCHWEILER, M.

Lab. of Dendrogeomorphology, Inst. of Geological Sciences, Univ., Berne, Suisse

Climatic Change and Climate Impacts Group, Inst. of Environmental Sciences, Univ. of Geneva, Carouge-Geneva, Suisse

STOFFEL, M.

Lab. of Dendrogeomorphology, Inst. of Geological Sciences, Univ., Berne, Suisse

Climatic Change and Climate Impacts Group, Inst. of Environmental Sciences, Univ. of Geneva, Carouge-Geneva, Suisse

SCHLÄPPY, R.

Lab. of Dendrogeomorphology, Inst. of Geological Sciences, Univ., Berne, Suisse

Lab. de Géographie physique, UMR-8591 CNRS, Meudon, France

Description :
The AA. present a case study of a debris-flood fan covered with coniferous and broadleaved tree species affected by past torrential activity in a pre-alpine catchment with limited sediment supply. The reconstruction is based on the sampling of 148 trees on the fan of the Torrent de la Greffe, Valais, Switzerland. Through the analysis of the trees sampled and their spatial distribution on the fan surface they analyse the debris-flood frequency of the torrent and the spatial imprint of past events.

Type de document :
Article de périodique

Source :
Geografiska annaler. Series A. Physical geography, issn : 0435-3676, 2011, vol. 93, n°. 1, p. 1-15, nombre de pages : 15, Références bibliographiques : 2 p.

Date :
2011

Editeur :
Pays édition : Suede, Stockholm, Svenska sällskapet för antropologi och geografi

Langue :
Anglais