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(Article of periodic en Anglais - 2010)

Document title

Empirical prediction of debris-flow mobility and deposition on fans

Authors(s) and Affiliation(s)

SCHEIDL C. (1) ; RICKENMANN D. (1 2) ;
(1) Inst. of Mountain Risk Engineering (IAN), Dep. of Civil Engineering and Natural Hazards, Vienna, AUTRICHE
(2) WSL, Mountain Hydrology and Torrents, Bimensdorf, SUISSE

Abstract

A data base of documented sediment-transporting events in torrent catchments of Austria, Switzerland and northern Italy has been compiled, using common classification techniques. With this data the AA. test an empirical approach between planimetric deposition area and event volume. They introduce a new empirical relation to determine the mobility coefficient as a function of geomorphologic catchment parameters : mean channel gradient and fan gradient. The empirical equations are implemented in a geographical information system (GIS) based simulation program and combined with a simple flow routing algorithm, to determine the potential runout area covered by debris-flow deposits. The simulation program is tested with debris-flow events of 1987 and 2005 in Switzerland for areas where LiDAR generated digital elevation models (DEMs) are available

Source

Article of periodic

published at : Earth surface processes and landforms / ISSN 0197-9337 / CODEN ESPLDB

Editor : Wiley, Chichester - ROYAUME-UNI (1981)

Millesime : 2010, vol. 35, no2 [pp. 157-173]

Bibliographic references : 1,5 p.

Collation : 13 fig., 11 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.1897

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2010
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