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Abstract

Vadose water is subsurface water between the land surface and the saturated zone below the water table. The vadose (or unsaturated) zone includes soil water, which is immediately available to the biosphere. It acts as a controlling agent in the transmission of water and other substances between various components of the earth system: aquifers, land surface, bodies of water, atmosphere, and so on. As an accessible body of material near the earth's surface, the vadose zone is a focus of much human activity, including agriculture, mining, construction, and waste disposal. Thus, it is affected by anthropogenic modifications of its chemical and physical components. Modern hydrology must consider interactions not only among the natural constituents, but also with a wide variety of contaminants, including pesticides, fertilizers, irrigation wastewater, sewage, toxic chemicals, radioactive substances, bacteria, mine wastes, and organic liquids.

Publication type Book chapter
Publication Subtype Book Chapter
Title Vadose water
DOI 10.1016/B978-012370626-3.00014-4
Year Published 2009
Language English
Publisher Elesvier
Contributing office(s) WMA - Earth System Processes Division
Description 12 p.
Larger Work Type Book
Larger Work Subtype Monograph
Larger Work Title Encyclopedia of Inland Waters
First page 766
Last page 777
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