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Regional groundwater modeling of the guarani aquifer system
(2020-09-01)
The Guarani Aquifer System (GAS) is a strategic transboundary aquifer system shared by Brazil, Argentina, Paraguay and Uruguay. This article presents a groundwater flow model to assess the GAS system in terms of regional ...
The mechanism of 234U 238U activity ratio enhancement in karstic limestone groundwater
(Elsevier B.V., 1993-01-05)
Experimental etch/leach of Carboniferous Limestone gravels on a laboratory time-scale has demonstrated that 234U 238U activity ratios (AR's) greater than the radiochemical equilibrium value may be generated on short ...
Nitrates in groundwater of the state of São PauloNitrato em águas subterrâneas do estado de São Paulo
(2019-01-01)
As groundwater consumption increases, its quality and consequently its potability are proportionally affected. Nitrates stand out among the agents that contribute to the loss of groundwater potability, as they are the most ...