Steady-state vertical distribution of cohesive sediments in a flow |
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Authors: | Martin Sánchez Patricia Grimigni Yann Delanoë |
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Affiliation: | 1. Faculté des sciences et des techniques, université de Nantes, BP 92208, 44322 Nantes, France;2. UMR 6143, CNRS M2C, Esplanade de la Paix, 14032 Caen, France |
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Abstract: | Settling velocity of diluted suspended aggregates is examined under steady-state conditions. It is shown that if the local settling velocity of the suspended mass of sediments at the bottom is gamma distributed, then, the vertical variation of the local mean settling velocity is proportional to a power of the local concentration C, where r is the gamma distribution parameter. That is a consequence of the suspended-sediment sorting produced by the vertical dynamics. The parameter r characterizes the range of settling velocity values for all the aggregates simultaneously in suspension. To cite this article: M. Sánchez et al., C. R. Geoscience 337 (2005). |
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Keywords: | Settling velocity Cohesive sediment Diluted suspension Gamma distribution Mud Loire estuary France Vitesse de chute Sédiment cohésif Suspension diluée Distribution gamma Vase Estuaire de la Loire France |
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