Application de la méthode des simulations croisées à l’analyse de tendances dans la relation pluie-débit à partir du modèle GR2M : cas du bassin versant du N’zi-Bandama (Côte d’Ivoire) |
| |
| Authors: | Amani Michel Kouassi Tozan Michel N’guessan Bi Koffi Fernand Kouamé Kassi Alexis Kouamé Jean-Claude Okaingni Jean Biemi |
| |
| Institution: | 1. Département des sciences de la terre et des ressources minières (STeRMi), Institut national polytechnique Félix Houphouët Boigny (INP HB) de Yamoussoukro, BP 1093, Yamoussoukro, Côte d’Ivoire;2. Département infrastructures et transports (IT), Institut national polytechnique Félix Houphouët Boigny (INP HB) de Yamoussoukro, BP 1093, Yamoussoukro, Côte d’Ivoire;3. Département du génie de l’eau et de l’environnement (DG2E), UFR des sciences de la terre et des ressources minières (STRM), université de Cocody, 22 BP 582, Abidjan 22, Côte d’Ivoire |
| |
| Abstract: | The study area is the N’zi watershed, sub-watershed of the Bandama River (Ivory Coast). The N’zi watershed is located between longitudes 3°49′ and 5°22′ West and latitudes 6°00′ and 9°26′ North and covers an area of 35,500 km2. This study aims to identify trends in the rainfall-runoff relationship by using a monthly conceptual model. The methodology has consisted on the one hand in highlighting the existence of interannual climate and hydrological variability by using the method of segmentation of Hubert, and on the other hand, in applying the crossed simulations method by using the GR2M model, over several 7-year sub-periods. The results of the application of the method of segmentation of Hubert have demonstrated the presence of a hydroclimatic variability in the N’zi watershed. The modifications of the climate and physical conditions of the flow resulted in a modification of the hydrological response of the watershed translated by a non-stationarity in the rainfall-runoff relation. |
| |
| Keywords: | Variabilité climatique Modè le GR2M Tendances relation pluie-dé bit N&rsquo zi-Bandama Cô te d&rsquo Ivoire |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
