Author(s): I. Guymer; J. R. West
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Keywords: No Keywords
Abstract: Measurements of the tidal variations of the two-dimensional (y, z) velocity and salinity distributions at a section on the Conwy estuary, North Wales have been taken simultaneously with fluorimetric dye tracing studies to obtain a much improved detailed description of the flow structure in a shallow estuary. These results have been used to determine transverse diffusion and longitudinal dispersion coefficients for the reach. The results illustrate the temporal and spatial dependence of estaurine mixing parameters. It may be concluded that tidally averaged concepts such as gravitational circulation must be treated with extreme caution given the strong intra-tidal variability of the mixing mechanisms. The spatial variability of the mixing processes implies that caution is required when using analytical or numerical solutions to the one or two dimensional form of the solute transport equations.
Year: 1989