Transport solide sélectif au cours de la dégradation d'un lit de sédiments calibrés bien triés

Translated title of the contribution: Selective bedload transport during the degradation of a well sorted graded sediment bed

Gareth Pender, Trevor B. Hoey, Chris Fuller, Ian K. McEwan

    Research output: Contribution to journalArticlepeer-review

    34 Citations (Scopus)

    Abstract

    The paper presents an analysis of the composition of bedload transport and changes to bed structure and topography during three graded sediment degradation experiments. The analysis suggests that variations in channel hydraulics and active layer composition alone may not explain the observed reductions in sediment transport. Further, the experiments appear to cover a crucial range of mean bed shear stresses for armouring studies, ranging between a condition of passive winnowing, to one of more active armour development in which the coarse grains play a role in determining bed structure. This indicates that the active layer concept, commonly applied in computer models of graded sediment transport, may be limited in its application.

    Translated title of the contributionSelective bedload transport during the degradation of a well sorted graded sediment bed
    Original languageFrench
    Pages (from-to)269-277
    Number of pages9
    JournalJournal of Hydraulic Research
    Volume39
    Issue number3
    Publication statusPublished - 2001

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