Detection of hydrological impacts of climate change in Benin by a multifractal approach

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AuteurAGBAZO, MEDARD NOUKPO
AuteurKOTO NGOBI, GABIN
Date d'ajout2026-06-02T16:06:57Z
Date de disponibilite2026-06-02T16:06:57Z
Date de publication2019
ResumeThis study analyzed the hydrological impacts of climate change over Bénin synoptic stations from 1951 to 2010 using multifractal approach. This method is based on the study of temporal evolution of fractal dimension ( ), multifractality index (α), co-dimension ( ) and probable maximum singularity ( ). The comparison of the average values of yearly fractal dimension ̅̅̅̅̅ obtained over the sub-period [1951- 1970], [1971-1990] and [1991-2010] has shown and confirmed that [1971-1990] is a drought period in the region. However, the sub-period [1991-2010] is not the end of the drought over all the synoptic stations as known before, in West Africa. During the period from 1951 to 2010 over all synoptic stations, except Natitingou, there is a slight increase in exponent, controlling the extremes values of rainfall. Thus, the evolution of the extremes rainfall over this period has a slight increasing tendency. These results confirm those obtained by some studies over the Ouémé River Basin (Benin) using the climate index method. Thus, the multifractal approach is an excellent tool to evaluate the hydrological impacts of climate change using only three parameters.
DOI10.5897/IJWREE2018.0819
Autre identifiantBECDB-9766
URIhttps://dspace.uac.bj/handle/123456789/8702
Languefr
Fait partie deInternational Journal of Water Resources and Environmental Engineering
Sujetclimate change
Sujetmultifractal
Sujethydrological impacts
Sujetextreme rainfall
SujetBénin
TitreDetection of hydrological impacts of climate change in Benin by a multifractal approach
TypeArticle

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