aquifer

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aquifer

a reservoir of ground water found in underground rock, sand and gravel layers.
References in periodicals archive ?
Embedded within the cerrado region, the "veredas" are wetland ecosystems formed on sandy soils with high concentrations of peat, and are responsible for recharge of aquiferous reservoirs; they are particularly endangered as a result of intensified human activity (Eiten, 1994; Alencar-Silva and Maillard, 2007).
A case met frequent practice is the collecting front of the phreatic aquiferous from major riverbed of water--course, materialized in the shape of a battery of wells with the specific features identical.
A vertical movement can also take place that penetrates underground and in many cases, reaches the phreatic and aquiferous levels, which causes gigantic problems of underground water contamination, main source which supplies drinkable water in our cities.
The major aquiferous formation are the deltaic plains and the Benin Formation, both confined and unconfined aquifers are encountered at varying depths and sometimes contain varying saline and clay ground water (Esu, and Adekon, 2001).
The study of the aquiferous formations of Lebanon through the chemistry of their typical springs.
Their entire body is organized for filtering water, which is moved inside an aquiferous system by choanocytes," or pumping cells.
With respect to animal morphology, Vacelet and Donadey (1977) observed early on that the HMA sponges generally display a denser mesohyl, narrower aquiferous canals, and smaller choanoycte chambers than their LMA counterparts.