Dissolved Major Elements Exported by the Congo and the Ubangui Rivers
Journal of Hydrology, 135 (1992) 237-257 237 Elsevier Science Publishers B.V., Amsterdam [21 Dissolved major elements exported by the Congo and the Ubangi rivers during the period 1987-1989 Jean-Luc Probst a, Renard-Roger NKounkou ~', G6rard Krempp ~, Jean-Pierre Bricquet b, Jean-Pierre Thi6baux c and Jean-Claude Olivry d ~Centre de G~ochimie de ia Surface (CNRS), I. rue Blessig, 67084 Strasbourg Cedex, France bCentre ORSTOM, B.P. 181, Brazzaville, Congo ~Centre ORSTOM. B.P. 893, Bangui. Central dfrican Republic OCentre ORSTOM, B.P. 2528. Bamako. Mali (Received 20 September 1991; accepted 6 October 1991) ABSTRACT Probst, J.-L., NKounkou, R.-R., Krempp, G., Bricquet, J.-P., Thi6baux, J.-P. and Olivry, J.-C., 1992. Dissolved major elements exported by the Congo and the Ubangi rivers during the period 1987-1989. J. Hydrol., 135: 237-257. On the basis of monthly sampling during the period 1987-1989, the geochemis:ry of ~he Congo and the Ubangi (second largest tributary of the Congo) rivers was studied in order (I) to understand the seasonal variations of the physico-chemical parameters of the waters and (2) to estimate the annual dissolved fluxes exported by the two rivers. The results presented here correspond to the first three years of measurements carried out for a scientific programme (Interdisciplinary Research Programme on Geodynamics of Peri- Atlantic lntertropical Environments, Operation 'Large River Basins' (PIRAT-GBF) undertaken jointly by lnstitut National des Sciences de l'Univers (INSU) and Institut Fran~ais de Recherche Scientifique pour ie D6veloppement en Coop6ration (ORSTOM)) planned to run for at least ten years.
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