A conceptual model of sediment transport: application to the Avon River Basin in Western Australia

M.S. Viney, M. Sivapalan

    Research output: Contribution to journalArticle

    53 Citations (Scopus)

    Abstract

    This paper deals with the coupling of a sediment modelling algorithm to an existing conceptual model of water and salt fluxes (LASCAM). In the model, sediment generation is based on a modified version of the universal soil loss equation. The sediment transport processes of channel deposition and re-entrainment, and bed degradation are coupled with the existing stream-routing algorithm of LASCAM. The model is applied to the Avon River Basin, a large, dry catchment in Western Australia. The paper highlights some of the scientific issues involved in quantifying the sediment discharge processes in this catchment and presents validation results comparing model predictions with observations of sediment transport at different locations in the catchment. The results indicate that despite the strongly non-linear relationship between stream flow and sediment load, both are predicted well by the model. The model also highlights that in the Avon River Basin, disproportionately more stream sediment is generated in the wheat belt region than in the lower catchment. Copyright (C) 1999 John Wiley & Sons, Ltd.
    Original languageEnglish
    Pages (from-to)727-743
    JournalHydrological Processes
    Volume13
    Issue number5
    DOIs
    Publication statusPublished - 1999

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