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(Article of periodic en Anglais - 2012)

Document title

Sediment transport in an alpine river before and after a dambreak flood event

Authors(s) and Affiliation(s)

MORCHE D. (1) ; SCHMIDT K.-H. (1) ;
(1) Martin-Luther-Univ. Halle-Wittenberg, Inst. for Geosciences and Geography, Halle, ALLEMAGNE

Abstract

Fluvial sediment transport in the high mountain Partnach River (Reintal Valley, Bavarian Alps) was investigated during a 10-year observation period (2001-2010). During this period, the downstream reach of the Partnach River was decoupled from upstream sediment throughput by a rockslide deposit until 2005. In August 2005, the dam was partially breached during a flood event resulting in renewed sediment coupling between the upstream and downstream reaches. A comparison of pre- and post-dambreak river sediment load data showed that the dissolved load dominated sediment transport prior to August 2005 with a switch to the dominance of bedload transport, post-dambreak. The higher post-dambreak bedload rates were particularly evident during the first years after the dam failure due to significant coarse material coupling between active sediment sources (undercut banks/talus cones) and the Partnach River. In the last years of the observation period (2009 and 2010) the dominance of dissolved load transport was re-established

Source

Article of periodic

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

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

Millesime : 2012, vol. 37, no3 [pp. 347-353]

Bibliographic references : 38 ref.

Collation : 4 fig., 2 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.2263

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2012
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