Capillary Barrier at the Interface of Two Layers
The system consists of two layers. The soil in the upper layer is fine, which means that its “effective capillary drive” (Morel-Seytoux 1987) is high but its saturated hydraulic conductivity is low. The soil of the lower layer, of infinite extent, is coarse, which means that its attributes are, in relative terms, the opposite of those of the fine soil.
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