Articles | Volume 6, issue 4
https://doi.org/10.5194/esurf-6-989-2018
https://doi.org/10.5194/esurf-6-989-2018
Research article
 | 
06 Nov 2018
Research article |  | 06 Nov 2018

Morphodynamic model of the lower Yellow River: flux or entrainment form for sediment mass conservation?

Chenge An, Andrew J. Moodie, Hongbo Ma, Xudong Fu, Yuanfeng Zhang, Kensuke Naito, and Gary Parker

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Cited articles

An, C., Fu, X., Wang, G., and Parker, G.: Effect of grain sorting on gravel bed river evolution subject to cycled hydrographs: Bed load sheets and breakdown of the hydrograph boundary layer, J. Geophys. Res.-Earth, 122, 1513–1533, https://doi.org/10.1002/2016JF003994, 2017.
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Short summary
In most models of river morphodynamics, sediment mass conservation is described by the Exner equation, which may take either the flux form or the entrainment form. Here we compare the two forms of the Exner equation under conditions typical of the lower Yellow River. We find that when using a single sediment grain size, there is little difference between the two forms. But when considering sediment mixtures, the two forms will show very different patterns of grain sorting.