A three dimensional numerical model of estuarine circulation.

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This paper describes the development of a three-dimensional numerical model of circulation and salt distribution for estuarine and coastal application. A vertical coordinate transformation is described. This coordinate transformation has the advantage of mapping the free surface and bottom boundaries onto coordinate surfaces and allows for a uniform vertical grid resolution throughout the modeled region. It also results in some distinct advantages over previous, arbitrarily layered approaches. Explicit finite-differences are used to approximate the system of coupled, non-linear partial differential equations. (A)

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