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(Article of periodic en Anglais - 2009)

Document title

Seasonal variations of sediment discharge from the Yangtze River before and after impoundment of the Three Gorges Dam

Authors(s) and Affiliation(s)

XU K. (1) ; MILLIMAN J.D. (1) ;
(1) School of Marine Science, Gloucester Point, ETATS-UNIS

Abstract

Before impoundment of the Three Gorges Dam (TGD) in June 2003, annual sediment discharge had decreased by 60%, and the hysteresis of seasonal rating curves in the upper reaches at Yichang station had shifted from clockwise to counterclockwise. From 2003 to 2006, after TGD impoundment, ~ 60% of sediment entering the Three Gorges Reservoir was trapped, primarily during the high-discharge months (June to September). In addition, the river channel in middle-lower reaches had changed from depositional to erosional in 2002. During the extreme drought year 2006, sediment discharge in the upper reaches drastically decreased to 9 Mt because of decreased water discharge and TGD trapping. Severe channel erosion and drastic sediment decline have put considerable pressure on the Yangtze coastal areas and East China Sea

Source

Article of periodic

published at : Geomorphology / ISSN 0169-555X

Editor : Elsevier, Amsterdam - PAYS-BAS (1987)

Millesime : 2009, vol. 104, no3-4 [pp. 276-283]

Bibliographic references : 0,5 p.

Collation : 9 fig., 1 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 21151

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1016/j.geomorph.2008.09.004

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