1. Etude de la dynamique sédimentaire dans le bassin versant de l'Oued Bellah (Algérie).
- Author
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Elahcene, Omar, Terfous, Abdelali, Remini, Boualem, Ghenaim, Abdellah, and Poulet, Jean-Bernard
- Subjects
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SEDIMENT transport , *WATERSHEDS , *SEDIMENTS , *SEDIMENTATION & deposition , *HYDROLOGY , *HYSTERESIS , *COMPARATIVE studies - Abstract
This paper presents a study of the sediment transport in the Wadi Bellah watershed. In order to understand the sedimentation dynamic in the watershed, analysis is based on instantaneous flow data and the concentration of suspended sediments transported in the stream. The results show that the annual average of specific degradation is about 610 t km−2year−1. This value is comparable to those found in other regions with similar hydrologic regimes. Analysis of the evolution of sediment concentration in the stream and the quantification of sediment fluxes showed that the sediment supply occurs mainly during floods. Three periods of active erosion are distinguished, the first, intense in winter, the other two of lesser extent in spring and autumn. [ABSTRACT FROM AUTHOR]
- Published
- 2013
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