Articles | Volume 20, issue 4
https://doi.org/10.5194/hess-20-1599-2016
https://doi.org/10.5194/hess-20-1599-2016
Research article
 | 
26 Apr 2016
Research article |  | 26 Apr 2016

Hydrological, chemical, and isotopic budgets of Lake Chad: a quantitative assessment of evaporation, transpiration and infiltration fluxes

Camille Bouchez, Julio Goncalves, Pierre Deschamps, Christine Vallet-Coulomb, Bruno Hamelin, Jean-Claude Doumnang, and Florence Sylvestre

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Cited articles

Abderamane, H., Razack, M., and Vassolo, S.: Hydrogeochemical and isotopic characterization of the groundwater in the Chari-Baguirmi depression, Republic of Chad, Environ. Earth Sci., 69, 2337–2350, 2013.
Aranyossy, J. and Ndiaye, B.: Etude et modélisation de la formation des dépressions piézométriques en Afrique sahélienne, J. Water Sci., 6, 81–96, 1993.
Archambault, J.: Les eaux souterraines de l'Afrique occidentale, Berger-Levrault, Nancy, France, 1960.
Bader, J., Lemoalle, J., and Leblanc, M.: Modèle hydrologique du Lac Tchad, Hydrolog. Sci. J., 56, 411–425, 2011.
Ballatore, T. J. and Muhandiki, V. S.: The case for a world lake vision, Hydrol. Process., 16, 2079–2089, 2002.
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Flows out of Lake Chad are constrained by a modeling of the hydrological, chemical, and isotopic budgets, based on a review of existing data along with new data. This innovative approach allows one to determine the proportions of evaporation, transpiration, and infiltration out of the lake while the two last flows are often neglected in semi-arid environments. Moreover, it allows to investigate the lake hydrological and chemical regulations under the large climatic changes in Sahel since 1950.
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