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Orientador(es)
Resumo(s)
Numerical models are needed to evaluate complex hydrological systems. VISUAL BALAN v2.0
is a lumped hydrological code which performs daily water balances in the soil, the unsaturated
zone and the aquifer requiring a small number of parameters. VISUAL BALAN has been used
to model the river Zêzere catchment upstream of Manteigas (Serra da Estrela, Central Portugal),
in order to assess its water resources. Modelling started with the definition of sub-basins based
on hydrogeomorphological units. Then, daily temperature and precipitation data from Manteigas
meteorological station were extrapolated to each sub-basin considering vertical gradients.
Finally, modelling with VISUAL BALAN was performed in four stages: (i) physical characterisation
of each sub-basin; (ii) preliminary calculations of the daily water balance; (iii) model calibration
by means of flow measurements in the river Zêzere; (iv) result analysis. This basin exhibits
complex patterns in hydrometeorological variables such as rainfall and temperature. Several
sub-basins have been defined in order to account for the spatial variability in hydrometeorological
and geomorphological variables. The model reproduces observed flowrates while its results
are coherent with the conclusions of previous studies in similar basins.
Descrição
Palavras-chave
Water balance Hydrological models Aquifer recharge Visual Balan Serra da Estrela Portugal
Contexto Educativo
Citação
Espinha et al., 2006. Avaliação de recursos hídricos através de modelação hidrológica: aplicação do programa VISUAL BALAN v2.0 a uma bacia hidrográfica na Serra da Estrela (Centro de Portugal).Cadernos La. Xeolóxico de Laxe, Coruna vo.31, pp.43-65.
Editora
Laboratorio Xeolóxico de Laxe