A Mathematical Model For Estimating The Pollution Exchange Coefficient Of Small Tidal Embayments
Author(s)
R.W.Barber, M.J.Wearing
Abstract
A mathematical model for estimating the
pollution exchange coefficient of small tidal
embayments
R.W. Barber' & M.J. Wearing*
'Computational Engineering Group, CLRCDaresbury Laboratory, U.K.
n
CRM - Rainwater Drainage Consultancy, Bolton, U.K.
Abstract
A novel analytical tidal prism model has been developed for predicting the
pollution flushing characteristics of small, well-mixed tidal embayments. The
model relates the water quality response of the basin to the external forcing
effects of the tide, initial pollutant loading and freshwater inflow. In general, the
pollution flushing depends not only upon the geometry of the basin and the tidal
range, but also on the proportion of effluent water which leaves the basin on an
ebb tide, mixes with the surrounding coastal water and partially returns on
subsequent flood tides. This effect has been taken into account in the
mathematical model by the inclusion of a 'return flow' factor.
The efficiency of the tidal flushing can be ex
Keywords
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