zone of saturation

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zone of saturation

n
(Geological Science) the ground below the water table
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References in periodicals archive ?
Specifically, the department's evaluation showed that "the presence of a phreatic zone composed of brackish water, as well as the presence of very thick loose deposits," in combination with frequent earthquakes experienced in the area and the addition of the heavy load of a high-rise building, creates a high possibility of "the catastrophic phenomenon of soil liquefaction", which would cause the building's collapse.
Gravity drives dissolutional patterns in the unsaturated, vadose zone, while hydraulic potential dominates in the saturated, phreatic zone. Epigene secondary deposits may form either subaerially in the vadose zone, commonly due to variations in void microclimate, or subaqueously in the phreatic zone, generally associated with changes in water chemistry (Ford & Williams 2007).