CARACTERISATION DES SEQUENCES DE SECHERESSE METEOROLOGIQUE A DIVERSES ECHELLES DE TEMPS EN CLIMAT DE TYPE SOUDANAIS : CAS DE L’EXTREME NORDOUEST DE LA COTE D’IVOIRE
Journal Title: Larhyss Journal - Year 2014, Vol 18, Issue 18
Abstract
The northwest of Cote d'Ivoire, as most tropical regions has alternating wet and dry periods. In a context climate more and more disrupted by human activities, it is essential to analyze the dry spells at various time scales in order to propose to the people of mitigation and adaptation measures in the field of water management. In this perspective, three stations with longer rainfall series were analyzed. The analysis used the values of the standardized precipitation index calculated for time scales of 5 years, 35 years and 70 years. The results indicate that the most remarkable for their drought intensity, duration and frequency occurred during the period 1970-1999 and regardless of the time scale considered. These dry spells have reached their peaks in 1983 and 1987 with extremely severe droughts type. The stations of Tengrela and Boundiali located north of the study area are most affected by drought. In addition, it analyzes showed that the time scale long-term seems more appropriate to describe with more details the dry spells.
Authors and Affiliations
SORO G. E. | Laboratoire Géosciences et Environnement Université Nangui Abrogoua 02 BP 801 Abidjan 02, Côte d’Ivoire, ANOUMAN D. G. L. | Laboratoire Géosciences et Environnement Université Nangui Abrogoua 02 BP 801 Abidjan 02, Côte d’Ivoire, GOULA BI T. A. | Laboratoire Géosciences et Environnement Université Nangui Abrogoua 02 BP 801 Abidjan 02, Côte d’Ivoire, SROHOROU B. | Direction de la Météorologie Nationale SODEXAM 15 BP 950 Abidjan 15, Côte d’Ivoire, SAVANE I. | Laboratoire Géosciences et Environnement Université Nangui Abrogoua 02 BP 801 Abidjan 02, Côte d’Ivoire
Keywords
Related Articles
- EP ID EP15080
- DOI -
- Views 358
- Downloads 14
TECHNIQUES FOR DETECTING THE PROGRESS OF THE LEAKS IN DAMS AND OTHER ARTIFICIAL RESERVOIRS
The majority of dams and reservoirs in operation have leakage problems which are very expensive to repair because the diagnosis causes through conventional methods is often inadequate. In addition, they can jeopardize...
ENVASEMENT DES BARRAGES DANS LES REGIONS ARIDES EXEMPLES ALGERIENS
This article examines the phenomenon of silting of dams in arid regions. Its complexity poses enormous problems to managers of dams. Siltation is the result of deposits of mud of soil erosion in watersheds and the sape...
QUALITE PHYSICO-CHIMIQUE ET PARAMETRES DE POLLUTION DES EAUX SOUTERRAINES DE LA REGION DE BISKRA
This study's main objective is the diagnosis of the quality of groundwater in the Biskra area. The analysis of the physico-chemical quality included 12 samples from boreholes in different aquifers exploited in the area...
THE FOGGARAS OF IN SALAH (ALGERIA): THE FORGOTTEN HERITAGE
In this article we treat for the first time the foggaras of the region of In Salah. The mission in the region and surveys near the ksourienne population showed that the In Salah foggaras are dug in the southern outskir...
PHENYLALANINE AND CATECHOL FLOCCULATION TESTS AND MECHANISMS IN THE PRESENCE OF ALUMINIUM SULPHATE
The purpose of this work is to observe and to interpret the types of interactions between aluminium sulphate and aromatic organic compounds such as catechol (hydroxyl function) and phenylalanine (amino-acid). The influ...