EARTH458 Lecture Notes - Lecture 9: Capillary Fringe, Groundwater Recharge, Vadose Zone
17 Jul 2020
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6. 3. 1 unsaturated flow and the water table, freeze and cherry 2. 6. Be sure the definition mentions pressure and water content: Defines as the surface on which the fluid pressure p in the pores of a porous medium is exactly atmospheric. The location of this surface is seen by the level at which water stands in a shallow well open along its length penetrating the surficial deposits just deeply enough to encounter standing water in the bottom. Using this diagram, describe the behavior of the water content, pressure head, and hydraulic head in the vadose zone (unsaturated zone), capillary fringe, at the water table, and in the saturated zone. Be sure to note in which panel of the diagram provides the information. Then, compare your list with the list provided in the text under the heading saturated, unsaturated, and tension-saturated zones . If p is measured in gage pressure, then on the water table, p = 0.
