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(Article of periodic en Anglais - 2008)

Document title

Forty years of rockfall accumulation at the Mount Wilcox site, Jasper National Park, Alberta, Canada

published at : Modelling of high-mountain relief

Authors(s) and Affiliation(s)

LUCKMAN B.H. (1) ;
(1) Dep. of Geography, Univ. of Western Ontario, London, CANADA

Abstract

Rockfall accumulation was measured in 1981 and 2000 along ca. 850 m of the former Banff-Jasper highway that skirts a large talus cone from Mount Wilcox in Jasper National Park, Alberta. Approximately 34.5 m3 of rockfall debris has accumulated on the roadbed since it was abandoned in 1961. Over the observation period, approximately 10 rockfalls > 0.25 m were deposited on the road each year, but only one every two years was > 0.5 m. Much larger rockfalls (up to 6-10 m3) have traveled across the road, creating bumpholes, and been deposited on the outwash. These results indicate some of the problems with trying to estimate rates of contemporary rockfall activity from sampling programmes based on relatively short periods of time and limited depositional areas because of the magnitude frequency distribution of the rockfall events

Source

Thematical fascicle

published at : Geographia polonica / ISSN 0016-7282 / CODEN GGPLAE

Editor : Państwowe Wydawnictwo Naukowe, Warszawa - POLOGNE (1964)

Millesime : 2008, vol. 81, no 1 [pp. 79-91]

Bibliographic references : 12 ref.

Collation : fig., tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 12059

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2009
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