Modelling solute transport in a small stream using discus

Stephen George Wallis, R Manson

    Research output: Contribution to journalArticle

    10 Citations (Scopus)

    Abstract

    This paper describes the main features of the DISCUS model for one-dimensional advection-dispersion computations in rivers, and describes its application to a short reach of The Murray Burn (a small stream in Edinburgh). DISCUS was calibrated using tracer data and an optimisation technique that uses a genetic algorithm. The optimised dispersion coefficients were found to increase from 0.25 to 2 m2/s in the flow range 16-261 1/s. The model was validated using tracer data not used in the calibration stage. It appears that transient storage does not play a major role in the transport of solutes in the reach that was modeled.

    Original languageEnglish
    Pages (from-to)501-515
    Number of pages15
    JournalActa Geophysica Polonica
    Volume53
    Issue number4
    Publication statusPublished - 2005

    Keywords

    • DISCUS
    • Dispersion coefficients
    • Numerical modelling
    • Solute transport
    • Streams

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