The solution of the homogenous problem 0 can now be

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Unformatted text preview: y) coincides with the free surface elevation, i.e. : H(x,y)≈ZS(x,y). In this 2D framework, all variables and parameters are spatially distributed in (x,y). A schematic representation of the coastal aquifer and its salt wedge is shown in Fig. 1. We assume that seawater and freshwater are separated by a sharp interface. More precisely, we rely on the Ghyben-Herzberg approximation(s), that is: • the seawater and freshwater fluids are assumed immiscible (sharp interface); • the subsurface seawater wedge is assumed quasi-hydrostatic; • the freshwater is assumed vertically hydrostatic (negligible vertical velocities). Modélisation stochastique de l'intrusion saline en 2D plan 59 Fig. 1 Schematic view of seawater intrusion (sea level ZSEA shown at right) into a free surface aquifer (shown at left), with saltwater interface ZSALT(x,y) and substratum ZINF(x,y) Now, let ZSALT(x,y) be the elevation of the salt/fresh water interface. Applying the hydrostatic assumptions and the pressure continuity condition at the inte...
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This document was uploaded on 01/19/2014.

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