Influence of hydropower dams on the composition of the suspended and riverbank sediments in the Danube - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Environmental Pollution Année : 2007

Influence of hydropower dams on the composition of the suspended and riverbank sediments in the Danube

(1) , (2) , (1) , (1)
1
2

Résumé

Large hydropower dams have major impacts on flow regime, sediment transport and the characteristics of water and sediment in downstream rivers. The Gabcikovo and Iron Gate dams divide the studied Danube transect (rkm 1895–795) into three parts. In the Gabcikovo Reservoir (length of 40 km) only a part of the incoming suspended sediments were deposited. Contrary to this, in the much larger Iron Gate backwater zone and reservoir (length of 310 km) all riverine suspended sediments were deposited within the reservoir. Subsequently, suspended sediments were transported by tributaries into the Iron Gate backwater zone. Here they were modified by fractional sedimentation before they transgressed downstream via the dams. Compared with undammed Danube sections, Iron Gate reservoir sediment and suspended matter showed higher clay contents and different K/Ga and Metal/Ga ratios. These findings emphasize the importance of reservoir–river sediment-fractionation.
Fichier non déposé

Dates et versions

hal-03644538 , version 1 (19-04-2022)

Identifiants

Citer

Gerard Klaver, Bertil van Os, Philippe Négrel, Emmanuelle Petelet-Giraud. Influence of hydropower dams on the composition of the suspended and riverbank sediments in the Danube. Environmental Pollution, 2007, 148 (3), pp.718-728. ⟨10.1016/j.envpol.2007.01.037⟩. ⟨hal-03644538⟩

Collections

BRGM BRGM-DO
11 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook Twitter LinkedIn More