Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/66010
Type: Artigo de periódico
Title: Evaluation of the salt accumulation process during inundation in water resource of Contas river basin (Bahia-Brazil) applying principal component analysis
Author: dos Santos, JS
de Oliveira, E
Bruns, RE
Gennari, RF
Abstract: The high salinization in some reservoirs of the Comas river basin (Bahia-Brazil) has been erroneously attributed only to concentration by evaporation. However, recent studies of this basin have shown that in period of intense rainfalls, occur an increase of the saline concentration in the flowing rivers of the reservoirs. The application of statistical methods (cluster and principal components analysis) have shown that this fact can be attributed to the discharge of saline waters from the small reservoirs of every drained area, provoked by inundation, is also an important factor in the salinization process. Thus the study of the geochemical variables: Na+, K+, Ca2+, Mg2+, Cl-, SO42- and CO32-, showed one group formed by Na+ and Cl-, attributed to the discharge of saline water provoked by inundation from a small reservoir, and a second group constituted by Ca2+, Mg2+, K+ and SO42-, due to an increase provoked by the evaporation in the salinization process. (C) 2003 Published by Elsevier Ltd.
Subject: principal component analysis
reservoir salinization process
semi-arid zone
cluster analysis
inductively coupled plasma atomic emission spectrometry
capillary electrophoresis
Country: Inglaterra
Editor: Pergamon-elsevier Science Ltd
Rights: fechado
Identifier DOI: 10.1016/j.watres.2003.12.006
Date Issue: 2004
Appears in Collections:Unicamp - Artigos e Outros Documentos

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