Artículos de revistas
Evaluation of the salt accumulation process during inundation in water resource of Contas river basin (Bahia-Brazil) applying principal component analysis
Registro en:
Water Research. Pergamon-elsevier Science Ltd, v. 38, n. 6, n. 1579, n. 1585, 2004.
0043-1354
WOS:000220462200023
10.1016/j.watres.2003.12.006
Autor
dos Santos, JS
de Oliveira, E
Bruns, RE
Gennari, RF
Institución
Resumen
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. 38 6 1579 1585