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- W2323613166 abstract "This research was conducted in the coastal aquifer of Itaipuaçu district, Marica, Rio de Janeiro in Brazil. This is an aquifer of great importance for the region, as it is still the only autochthonous means of water supply for a growing population. The use of this water resource without control is a big problem, because quality can be impaired by contamination coming from the surface and, as a coastal aquifer, overexploitation can generate migration of saltwater / freshwater interface towards mainland and can salinize it. The paper aims to present the hydrodynamic characteristics of the shallow aquifer of the study area, by assessing local flow, flow parameters of the aquifer, acquisition and processing of meteorological data and water balance of the aquifer system, with the application of Visual Balan V.2.0 code. Other calculation methodologies were employed, as hydrometeorological simplified balance (Easybal v.4 computer code) and water balance with use of Darcy's Law. Wells were drilled in the shallow aquifer of the study area to assess local stratigraphy, and interference tests were performed to obtain physical parameters of the aquifer (permeability and storage coefficient). In situ measurements of water levels in wells were performed in the region to map the shallow aquifer head distribution. The data indicate a low hydraulic gradient and equipotential lines subparallel to the shoreline. Based on the hydraulic parameters, flow simulations were performed with the software Visual Modflow 4.2. The results obtained to date indicate a recharge of about 36% of the precipitation and hydraulic gradient less than 1%. Obtaining in situ parameters of the aquifer was crucial for the proper model fit and evaluation of the local aquifer properties." @default.
- W2323613166 created "2016-06-24" @default.
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- W2323613166 date "2013-09-26" @default.
- W2323613166 modified "2023-10-16" @default.
- W2323613166 title "Aspectos Hidrodinâmicos, Balanço Hídrico e Simulação de Fluxo no Aquífero Costeiro de Itaipuaçu, Maricá – Rio de Janeiro, Brasil" @default.
- W2323613166 doi "https://doi.org/10.11137/2013_2_105_116" @default.
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