Use of the morphological transfer function for the simulation of water transfers in Debo catchment (SOUBRE area, southwest of Ivory Coast)
Journal Name:
- International Journal of Innovation and Applied Studies
Key Words:
Abstract (2. Language):
The climate variability has affected pejoratively the groundwater recharge in Soubre area. Thus, the simulation of
surface flows is an answer to the problematic of water supply in the area. The aim of this study is the simulation of surface
flows in Debo catchment by estimating flood flows.
The methodology is based on the application of morphological transfer function (MTF) of DEMIURGE software (Digital
Elevation Model In Urgency). It consisted of the determination of fractal parameters related to water systems, the estimation
of maximum flow at the outlet, the study of the sensitivity of the simulated hydrographs based on the simulation time step.
The results show that the reference time is t = 20 minutes. For simulation times different from t = 20 minutes, the
geomorphologic pulse histograms (GPH) do not fit the times transfer frequency histogram. The specific flow at the outlet of
the catchment is 3.394 m3.s-1 for a rise time of 31.33 hours under the assumption of a uniform effective rainfall of 1 mm. The
maximum flows simulated evolve with the rainfall blade and the rushed water. For a blade of 188.08 mm past, the maximum
flow rate is at least 634.111 m3.s-1. For a rise time of 33 h 20 minutes, the volumes assessed are estimated at 1.06.108 m3.
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