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(Article of periodic en Anglais - 2012)

Document title

Temporal variability of suspended sediment sources in an alpine catchment combining river/rainfall monitoring and sediment fingerprinting

Authors(s) and Affiliation(s)

NAVRATIL O. (1 2) ; EVRARD O. (5) ; ESTEVES M. (1 2) ; LEGOUT C. (1) ; AYRAULT S. (5) ; NÉMERY J. (3) ; MATE-MARIN A. (1 2) ; AHMADI M. (5) ; LEFÈVRE I. (5) ; POIREL A. (4) ; BONTÉ P. (5) ;
(1) LTHE - Univ. Grenoble 1, Grenoble, FRANCE
(2) LTHE (Lab. d'Etude des Transferts en Hydrologie et Environnement), IRD, Grenoble, FRANCE
(3) LTHE - Univ. Grenoble 1/G-INP, Grenoble, FRANCE
(4) EDF-DTG Electricité de France, Grenoble, FRANCE
(5) lab. des Sciences du Climat et de l'Environnement (LSCE/IPSL) - UMR 8212 (CEA, CNRS, UVSQ), Gif-sur-Yvette, FRANCE

Abstract

This paper aims to analyse the influence of 2 contrasted rainfall regimes on the mobilization of sediment sources and the transfer of fine sediment during floods within the Bléone catchment located in the Southern French Alps, by combining sediment monitoring, rainfall data, and sediment fingerprinting (based on geochemistry and radionuclide concentrations). Suspended sediment yields were monitored between October 2007 and December 2009 in 4 subcatchments. Sediment exports at the river catchment outlet were mainly driven by widespread rainfall events (long duration, low intensities). In contrast, heavy, local and short duration storms, generated high peak discharges and suspended sediment concentrations in small upstream torrents. However, these upstream floods had generally not the capacity to transfer the sediment down to the catchment outlet. This study also confirmed the important contribution of black marls to sediment transported in rivers

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, no8 [pp. 828-846]

Bibliographic references : 1 p.

Collation : 13 fig., 5 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.3201

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2013
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