Estuary Classification Revisited

Details Estuary Classification Revisited Estuary Classification Revisited

2012-03-13

arxiv.org/abs/1203.2692v3

Physics

Fluid Dynamics

6 pages, 2 figures, 1 table

Scientific paper

The governing equations of a tidally averaged, width averaged, rectangular estuary has been investigated. It's theoretically shown that the dynamics of an estuary is entirely controlled by two parameters: (i) the Estuarine Froude number, and (ii) a nondimensional number relating Estuarine Aspect ratio and the Tidal Froude number. The momentum, salinity and integral salt balance equations can be completely expressed in their terms. The estuary classification problem has also been reinvestigated. It's found that these two control variables can completely specify the estuary type. Comparison with real estuary data shows good match. Additionally, we show that the well accepted leading order integral salt balance equation is inconsitent with the leading order salinity equation in an order of magnitude sense.

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