The comparatively dry soil or rock located between the ground surface and the top of the Water Table. A zone immediately below the surface of the ground, in which the openings are partially filled with air, and partially with water trapped by molecular attraction. Generally subdivided into: (a) belt of soil moisture; (b) intermediate belt; and (c) capillary fringe. Also referred to as the Unsaturated Zone or the Vadose Zone.
Zone in soil that is not saturated with water and lies above the water table. See water table, zone of saturation.
The layer in the ground above the water table where the available voids are filled with air. Water falling on the ground percolates through this zone on its way to the aquifer.
That portion of the lithosphere in which the pore spaces in rock, soil material, and soil are partially or temporarily filled with air, that is, the region above the water table and its accompanying capillary fringe.
The unsaturated surface layer of the ground in which some of the spaces between soil particles are filled with water and others are filled with air. Some of the water in the zone of aeration is lost to the atmosphere through evaporation.
the underground area, above the zone of saturation, where both air and moisture are found in the spaces between soil and rock particles
(vadose zone or unsaturated zone) the zone between the land surface and the water table in which the pore spaces between soil and rock particles contain water, air, and/or other gases
the area between the earth's surface and the water table where most of the pore spaces between the sand, gravel, and/or rocks are filled with air (February is often a cold, dry month in New Jersey's Pinelands ' a time when little or no moisture is found in the zone of aeration.)
area where the spaces between particles are filled partly with air and partly with water
A region below the Earth's surface that is marked by the presence of both water and air in the pores of rocks and soil. Also called aeration zone.
The locus of points just above the water table where soil pores may either contain air or water. This is also called the vadose zone.
the portion of the ground from the Earth's surface down to the water table - the zone of aeration is not saturated with water because its pores are filled partly by air and partly by water
Upper soil layers that hold both air and water.
Horizontal zone that extends from the top of the water table to the ground surface. Soil and rock pore spaces in this zone may and may not have water.
A zone between the land surface and the water table where pore spaces are filled mainly with air. Water that exists in the pore space in this zone is referred to as "soil moisture".
Zone immediately below the ground surface within which pore spaces are partially filled with water and partially filled with air.