An Integrated Media, Integrated Processes Watershed Model – WASH123D: Part 3 –a comparative study on different surface water/groundwater coupling approaches

In the core of an integrated watershed model is the coupling among surface water and subsurface water flows. Recently, there is a tendency of claiming the fully coupled approach for surface water and groundwater interactions in the hydrology literature. One example is the assumption of a gradient type flux equation based on Darcy’s Law (linkage term) and the numerical solution of all governing equations in a single global matrix. We argue that this is only...
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