ANALYSIS OF THE HYDROLOGICAL IMPACTS OF CLIMATE VARIABILITY IN WEST AFRICA: CASE STUDY OF THE BANDAMA WATERSHED IN IVORY COAST

Journal Title: Larhyss Journal - Year 2017, Vol 31, Issue 31

Abstract

This study aims to analyze the changes induced by rainfall variability on the hydrological behavior of the Bandama watershed in Ivory Coast. The climatological data (rainfall, temperature) used cover the period 1951-2015. The methodology consisted, on the one hand, in the determination of the hydrological parameters targeted to carry out the study. These include effective rainfall, runoff potential and infiltration potential. On the other hand, the standard normalization index and two tests of trends (Pettitt test and Hubert segmentation method) were applied to the series of hydrological parameters determined. The main results obtained made it possible to identify the manifestations of the hydrological variability observed in the Bandama watershed. The various hydrological parameters analyzed vary over the years and describe a regressive trend marked by a very significant break in 1980- 1981. The estimated hydrological deficits fluctuate between 15% (infiltration potential) and nearly 60% (runoff potential), 16% for average rainfall and 31% for effective rainfall. The decline in rainfall has, of course, consequences for the availability of water resources in a watershed that is also vital.

Authors and Affiliations

KOUASSI A. M. | Institut National Polytechnique Félix Houphouët-Boigny (INP-HB) ; Département des Sciences de la Terre et des Ressources Minières (STeRMi) ; Laboratoire du Génie Civil, des Géosciences et des Sciences Géographiques BP 1093 Yamoussoukro (Côte d’Ivoire), ASSOKO A. V. S| Institut National Polytechnique Félix Houphouët-Boigny (INP-HB) de Yamoussoukro, Ecole Doctorale Polytechnique (EDP) ; Bp: 1093 Yamoussoukro, KOUAKOU K. E. | Institut National Polytechnique Félix Houphouët-Boigny (INP-HB) ; Département des Sciences de la Terre et des Ressources Minières (STeRMi) ; Laboratoire du Génie Civil, des Géosciences et des Sciences Géographiques BP 1093 Yamoussoukro (Côte d’Ivoire), DJE K. B| Société d’Exploitation et de Développement Aéroportuaire, Aéronautique et Météorologique (SODEXAM) Abidjan ; 15 Bp: 990 Abidjan 15, KOUAME K. F| Université Félix Houphouët-Boigny d’Abidjan-Cocody, Unité de Formation et de Recherche des Sciences de la Terre et des Ressources Minières (UFR-STRM) ; Laboratoire des Sciences et Techniques de l’Eau et de l’Environnement (LSTEE) ; 22 BP 582 Abidjan 22 (Côte d’Ivoire), BIEMI J. | Université Félix Houphouët-Boigny d’Abidjan-Cocody, Unité de Formation et de Recherche des Sciences de la Terre et des Ressources Minières (UFR-STRM) ; Laboratoire des Sciences et Techniques de l’Eau et de l’Environnement (LSTEE) ; 22 BP 582 Abidjan 22 (Côte d’Ivoire)

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  • EP ID EP15312
  • DOI -
  • Views 400
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How To Cite

KOUASSI A. M. , ASSOKO A. V. S, KOUAKOU K. E. , DJE K. B, KOUAME K. F, BIEMI J. (2017). ANALYSIS OF THE HYDROLOGICAL IMPACTS OF CLIMATE VARIABILITY IN WEST AFRICA: CASE STUDY OF THE BANDAMA WATERSHED IN IVORY COAST. Larhyss Journal, 31(31), 19-40. https://www.europub.co.uk/articles/-A-15312