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You are here : eLibrary : IAHR World Congress Proceedings : 36th Congress - The Hague (2015) FULL PAPERS : THEME 3- SEDIMENT MANAGEMENT AND MORPHODYNAMICS : ESTUARIES, TIDAL INLETS, ESCOFFIER, O,BRIEN AND MORPHOLOGICAL ATTRACTORS
ESTUARIES, TIDAL INLETS, ESCOFFIER, O,BRIEN AND MORPHOLOGICAL ATTRACTORS
Author : J.B. HINWOOD AND E.J. MCLEAN
In a previous paper the authors showed that over very long time scales a barrier estuary or tidal inlet will tend towards one of two states, called attractors. In this paper it is shown how that analysis represents an extension and generalisation of three earlier analyses. The class of estuaries we consider is the barrier estuary in which a tidal basin is connected to the sea by a constricted entrance channel through an erodable sand barrier. In such estuaries, tidal exchange is the dominant process controlling water and sediment transports. The entrance channel through the barrier provides a significant hydrodynamic resistance and has a regulating effect on the tidal prism. The three widely recognised quantitative ?laws? describing the long term equilibrium dimensions of the entrance channel are: the tidal prism-entrance area relations, often referred to as the O'Brien equation, secondly the Escoffier or closure diagram, based on a simple hydrodynamic relationship between the entrance area and the entrance velocity plus an empirical
File Size : 766,149 bytes
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Chapter : IAHR World Congress Proceedings
Category : 36th Congress - The Hague (2015) FULL PAPERS
Article : THEME 3- SEDIMENT MANAGEMENT AND MORPHODYNAMICS
Date Published : 18/04/2016
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