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Hydrotheek

Record nummer 2245843
Titel artikel Predicting suspended sediment concentrations in the Meuse river using a supply‐based rating curve
Auteur(s) Doomen, A.M.C.
Tijdschrifttitel Hydrological processes : an international journal
Deel(Jaar)Nummer 22(2008)12
Paginering 1846 - 1856
Online full text
Publicatie type Artikel
Taal Engels
Toelichting (Engels) A rating curve provides a reasonable estimate of the suspended sediment concentration at a given discharge. However, analysis of a detailed 9‐year time‐series of suspended sediment concentration (SSC) and discharge Q of the Meuse River in The Netherlands indicates that SSC is (besides discharge) controlled by exhaustion and replenishment of different sediment sources. Clockwise hysteresis and other effects of sediment exhaustion can be observed during and after flood events, and the effects of stockpiling of sediment in the river bed during low‐discharge periods are obvious in the SSC of the next flood. In a single regression equation we have implemented a parameter that represents the presence or absence of stock for sediment uptake. In comparison with a rating curve of SSC and Q, adding this parameter is shown to be a more reliable and comprehensive method to predict SSCs at all discharge regimes with all preceding discharge conditions, for single‐peaked and multi‐peaked runoff events as well as for low flow conditions. The method is probably applicable to other small‐ to medium‐scaled river basins.
Betrokken instanties KWR, Watercycle Research Institute
Universiteit Utrecht
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