Determinism Of Hydrological Recession Processes On Oueme Basin Catchment And Application Of Least Actions Principle
Journal: International Journal of Scientific & Technology Research (Vol.4, No. 9)Publication Date: 2015-09-15
Authors : Avahounlin Ringo F.; Alamou Eric; Obada Ezkiel; Afouda Abel;
Page : 198-208
Keywords : Key-words basic equations of Boussinesq; hydrodynamic process; least actions principle; oueme basin catchment recession analysis;
Abstract
ABSTRACT This work aim to analyze the hydrodynamic process of oueme basin catchment basin located in Benin between 758N and 1012N latitude and 135 and 305E longitude. From rainfall and discharge data chronic rates over the period 2000-2009 empirical hydrological modeling based on linearization of Boussinesqs equation and least actions principle methods were used to predict the mechanism of the water drain to determine the streamflow recession curves to the watershed scale and compare the modeling findings with hygrogram obtained by applied of principle of the least actions. An analysis of drying up showed a varied trend in four sub-basins. At Beterou and Bonou sub-basin the non-linear character observed reflects a succession of phases of drying up. A conceptual linearization formulation of the basic equations of Boussinesq considering the non-linear character of the drying up of the two sub-basins helped simulate low flow rates with high efficiency and to determine the types low flow curves. Successfully comparing analyzed of modeling findings with recession curves obtained by least actions principle confirm the heterogeneity of recession nature at oueme basin scale.
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