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Estimate of Groundwater Recharge Based on Water Balance in The Unsaturated Soil Zone Rev. Bras. Ciênc. Solo
Melo,Davi de Carvalho Diniz; Wendland,Edson; Guanabara,Rafael Chaves.
ABSTRACT Groundwater management depends on the knowledge on recharge rates and water fluxes within aquifers. The recharge is one of the water cycle components most difficult to estimate. As a result, despite the chosen method, the estimates are subject to uncertainties that can be identified by means of comparison with other approaches. In this study, groundwater recharge estimates based on the water balance in the unsaturated zone is assessed. Firstly, the approach is evaluated by comparing the results with those of another method. Then, the estimates are used as inputs in a transient groundwater flow model in order to assess how the water table would respond to the obtained recharges rates compared to measured levels. The results suggest a good...
Tipo: Info:eu-repo/semantics/article Palavras-chave: SPA model; Guarani Aquifer; Groundwater; Soil-plant interaction.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832015000501336
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Shallow aquifer response to climate change scenarios in a small catchment in the Guarani Aquifer outcrop zone Anais da ABC (AABC)
MELO,DAVI C.D.; WENDLAND,EDSON.
ABSTRACT Water availability restrictions are already a reality in several countries. This issue is likely to worsen due to climate change, predicted for the upcoming decades. This study aims to estimate the impacts of climate change on groundwater system in the Guarani Aquifer outcrop zone. Global Climate Models (GCM) outputs were used as inputs to a water balance model, which produced recharge estimates for the groundwater model. Recharge was estimated across different land use types considering a control period from 2004 to 2014, and a future period from 2081 to 2099. Major changes in monthly rainfall means are expected to take place in dry seasons. Most of the analysed scenarios predict increase of more than 2 ºC in monthly mean temperatures. Comparing...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Climate change; Guarani Aquifer; Groundwater modelling; Groundwater recharge.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000200391
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