Use este identificador para citar ou linkar para este item: http://www.repositorio.ufc.br/handle/riufc/16329
Título: Hydrogeochemical and flow modeling of aquitard percolation in the Cariri valley - Northeast Brazil
Autor(es): Machado, Carlos José Freire
Santiago, Maria Marlúcia Freitas
Mendonça, Luiz Alberto Ribeiro
Frischkorn, Horst
Mendes Filho, Josué
Palavras-chave: Hydrogeochemistry
Modflow
Araripe Sedimentary Basin
Cariri Valley
Hidrogeoquímica
Bacia sedimentar do Araripe
Data do documento: 5-Jul-2007
Editor: Aquatic Geochemistry
Citação: MACHADO, C. J. F.; SANTIAGO, M. M .F.; MENDONÇA, L. A. R.; FRISCHKORN, H.; MENDES FILHO, J. (2007)
Abstract: Flow modeling and hydrogeochemical inversion calculations were performed on the aquifer systems of the Crato-Juazeiro Graben in the Araripe Sedimentary Basin of the Cariri Valley, Northeast Brazil, in order to assess aquifer interconnections through an aquitard of the Araripe Plateau. Steady state hydraulic head numeric calculations with the finite difference method used Modflow software with hydrologically based boundary conditions and a piezometric surface as initial condition. Hydrogeochemical inversion with PHREEQC was performed for two water samples representing typical initial and final waters along the flow path. Flow simulation shows that approximately 20% of all recharge water from the superior aquifer system passes through the Santana aquitard reaching the middle aquifer system. Quantification of mineral dissolution/precipitation processes, ion exchange and microbiological redox reactions taking place in the aquifer systems also indicates hydraulic interconnection of the superior and middle aquifer systems through the Santana aquitard.
Descrição: MACHADO, C. J. F. et al. Hydrogeochemical and flow modeling of aquitard percolation in the Cariri valley - Northeast Brazil. Aquatic Geochemistry, v. 13, p. 187-196, 2007.
URI: http://www.repositorio.ufc.br/handle/riufc/16329
ISSN: 1380-6165
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