Geomorphological Evolution And Inundations In The Déhita Valley, Important Witnesses Of Climate Change In The Peripheral District Of The Bouaflé City (Central-west Of Côte d'Ivoire)

Abstract

In Bouaflé town, the valley of Déhita is on front frontline facing global warming. It undergoes inundations, as they occur more and more regularly, which threaten human life and installations.

There is a real difficulty in isolating these crises from the effects of the revival of morphogenetic processes due to global warming. Thus, how does geomorphological evolution links to the current climate, imply the inundations, which threaten the populations in the Déhita valley ? Objective is to study impact of geomorphological evolution in the inundations in the Déhita valley. Hypothesis is that the inundations depend on deficiency of isostatic compensation of products of erosion in the valley. Direct measurements of erosion and solid flows in the river have been carried in the valley. Results show enormous disproportion between latent loads at edge of the of the river and the minimal capacity of the latter, that undergo inundations in the Déhita valley.