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Impact of forest fires on geomorphic processes in the Tyrolean Limestone Alps

Concepts and implications of environmental change and human impact : studies from Austrian geomorphological research

Auteur(s) et Affiliation(s)

SASS, O.
Inst. of Geography, Univ., Innsbruck, Autriche
Inst. of Geography, Univ., Augsburg, Allemagne
HAAS, F.
Physical Geography, Catholic univ., Eichstätt-Ingolstadt, Allemagne
SCHIMMER, C.
Inst. of Geography, Univ., Augsburg, Allemagne
HEEL, M.
Inst. of Geography, Univ., Augsburg, Allemagne
BREMER, M.
Inst. of Geography, Univ., Innsbruck, Autriche
STÖGER, F.
Inst. of Geography, Univ., Innsbruck, Autriche
WETZEL, K.-F.
Inst. of Geography, Univ., Augsburg, Allemagne
KEILER, M.
Inst. of Geography, Univ., Bern, Suisse
Dep. of Geography and Regional Science, Univ., Graz, Autriche
Inst. of Remote Sensing and Photogrammetry, Univ. of Technology, Graz, Autriche
OTTO, J.-C.
Dep. of Geography and Geology, Univ., Salzburg, Autriche


Description :
The AA. investigated geomorphic processes on 2 slopes (Arnspitze and Bettelwurf) burned by wildfire in the region north of Innsbruck. Both burned in 1946 and both are still characterized by severe vegetation destruction. Their aim was to establish disturbed and undisturbed erosion rates and to decide whether recent debris flows can be assigned to these historical wildfires or not. They measured fluvial erosion by means of collectors, estimated the amount of post-fire erosion from stratigraphic exposures in the adjacent talus, modelled bedload discharge with a statistical model developed in a nearby study area and quantified recent debris flow activity by combining airborne and terrestrial laser scans. The concordance of measured and modelled yields was reasonably good; deviations may be explained by differing amounts of precipitation. These results support the impression that current debris flow activity at the Bettelwurf was enhanced by the aftermath of the 1946 wildfire.


Type de document :
Article de monographie

Source :
Geografiska annaler. Series A. Physical geography, issn : 0435-3676, 2012, vol. 94, n°. 1, p. 117-133, nombre de pages : 17, Références bibliographiques : 36 ref.

Date :
2012

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

Langue :
Anglais
Droits :
Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI)