Author(s): P. F. Crapper; C. J. Barnes

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Keywords: No Keywords

Abstract: Hydrological models are often based on an integration of processes which are characterised by phenomenological relationships at the laboratory (or point) scale. Although these relationships (e.g. Darcy's Law) are relatively well understood at this scale, the process of integration in order to describe whole catchment systems contains many pitfalls. An alternative approach is to seek to characterise the behaviour of catchment systems by phenomenological relationships obtained from regularities observed in system-scale data using system-scale parameters. As an example, we have applied this approach to modelliTig sediment transport. The transport is shown to be well characterised in terms of a mean sediment load and a non-linear parameter related to the exponent of the sediment concentration relationship obtained from plot experiments.

DOI:

Year: 1997