Etude de la dynamique sédimentaire dans le bassin versant de l'Oued Bellah (Algérie)

Elahcene, Omar; Terfous, Abdelali; Rémini, Boualem; Ghenaim, Abdellah; Poulet, Jean-Bernard

doi:10.1080/02626667.2012.742530

Cited by 20 publications

(9 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…El-Amine et al (2009) show from in situ measurements at the Mekerra station (Sidi Ali Benyoub, Algeria) that the relationship between liquid flows and suspended solids flows is of the power type. Omar et al (2013) show that the suspended solid flows vary according to the liquid flows according to a power law of the form Q s = 4.62 Q l…”

Section: Discussionmentioning

confidence: 99%

Hydrological study and suspended sediment transport in the MACTA: Mekerra watershed (NW - Algerian)

Mokadmi¹,

Cherif²

2019

IJHST

View full text Add to dashboard Cite

The aim of this work is hydrological study and quantification of solid suspended transport in Mekerra basin which is located in the northwest of Algeria, in order to understand and explain the mechanisms of sediment, their causes and their consequences. The quantitative and qualitative analysis of the liquid flows and solid flows measured at this representative basin over a period from 1988-2009 (station: Sidi Bel Abbès) has revealed relations between the solid transport of wadis and their streamflow, in fact average specific degradation is 117 t/km 2 /year. The relations of the concentrations-liquid flows through the use of hysteresis curves have made it possible to identify the main classes of evolution. The curved shape in eight forms seems to be the most frequent. It reflects instantaneous erosive action and transport of rapidly suspended sediments caused by short showers, violent on generally dry, fragile and poorly protected soils.

show abstract

Section: Discussionmentioning

confidence: 99%

Hydrological study and suspended sediment transport in the MACTA: Mekerra watershed (NW - Algerian)

Mokadmi¹,

Cherif²

2019

IJHST

View full text Add to dashboard Cite

show abstract

“…The silting up of hydraulic reservoirs influences the potential of water reserves, including its storage capacity by around 30•10 6 m 3 [REMINI 2002]. This calls for fast and efficient intervention, and quantification of the solid matter transport based on reliable mathematical formulas [ELAHCENE, REMINI 2009].…”

Section: Introductionmentioning

confidence: 99%

“…and to understand the functioning of watersheds in the production of sediments, several authors in Algeria and elsewhere have based their work on the analysis of the solid charge evolution in the suspension as a function of liquid flows. These authors included ETCHANCHU and PROBST [1986], KATTAN et al [1987], PROBST and AMIOTE SUCHET [1992], TERFOUS et al [2001], BENKHALED andREMINI [2003], ELAHCENE et al [2013], BOUGUERRA et al [2017, KHENICHE et al [2019] etc.…”

Section: Introductionmentioning

confidence: 99%

Journal of Water and Land Development

2022

View full text Add to dashboard Cite

Arid and semi-arid areas are characterised by differentiation in meteorological conditions. Sometimes the rains are rare and not very intense and at other times they are dense and very intense, resulting in torrents that often lead to strong soil erosion. Most of the time, the losses occur at the solids level because the erosion effect is too high. In this study, we want to evaluate the transfer of solid sediments as a function of liquid transport in the basin of Wadi Zeddine at Ain Defla in Algeria. To understand this phenomenon, we used the data of liquid flows (Q l , m 3 •s -1 ) and concentration of suspended sediments (C, g•dm -3 ), transported in the river, the data collected by the NWRA (National Water Resources Agency), over 24 years have been used to find a relationship between these two quantities, to estimate the quantity of solid transport Q s (kg•s -1 ) in the watercourse of the catchment area studied. The results obtained show a good correlation between solid and liquid flows, with a correlation coefficient estimated at 90%, and the average annual sediment supply recorded at the outlet of the Wadi Zeddine watershed is estimated at around 88,048 Mg, which corresponds to 202 Mg•km -2 •y -1 erosion rate. This value is comparable to those found in other regions with similar hydrological regimes.

show abstract

“…Cette problématique a motivé beaucoup de chercheurs à comprendre les mécanismes de la morphogenèse des versants et l'hydrodynamisme des oueds pour tenter de quantifier les volumes des sédiments ainsi transportés. Plusieurs auteurs ont publié des études sur le phénomène (ACHITE et MEDDI, 2004;BOUANANI, 2004;BOUROUBA, 1998;ELAHCENE et al, 2012;GHENIM, 2008;MEGNOUNIF, 2007;PROBST et AMIOTTE SUCHET, 1992;SOGREAH, 1967;TERFOUS et al, 2001). Une de leurs priorités a été la recherche de modèles statistiques mettant en évidence la relation entre les paramètres hydroclimatiques et géomorphologiques et le transport des matériaux solides.…”

Section: Introductionunclassified

Transport solide dans un cours d’eau en climat semi-aride : cas du bassin versant de l’Oued Boumessaoud (nord-ouest de l’Algérie)

Bouguerra

Bouanani²,

Baba-Hamed³

2017

rseau

View full text Add to dashboard Cite

L’exploitation des valeurs instantanées de débits liquides et de débits solides en suspension dans le bassin versant de l’oued Boumessaoud (118 km2), pour la période allant de septembre 1988 à août 2004, a permis de mettre en évidence la variabilité annuelle et saisonnière de l’apport solide, et d’examiner l’ampleur du phénomène pendant les périodes d’érosion active de l’année dans ce bassin des régions méditerranéennes semi-arides où la contribution des crues s’est élevée à 71 % durant la saison de l’automne, pour atteindre 97 % de la charge globale moyenne au printemps. Les résultats de cette analyse montrent que la dégradation spécifique moyenne est de l’ordre de 518 t∙km-2∙an-1. L’approche statistique abordée, qui est une régression reliant les deux variables débit liquide (QL) et débit solide (QS), a été testée à différentes échelles temporelles; les modèles générés sont de type puissance (QS = aQLb), où les débits liquides expliquent globalement plus de 80 % de la variance du transport solide. L’identification des périodes productives de sédiments dans cette dynamique érosive a été étudiée en analysant l’évolution de la concentration des particules en suspension dans le cours d’eau. Cette modélisation aura pour application la reconstitution de données manquantes au droit des stations de contrôle au niveau du bassin d’étude.The analysis of instantaneous water discharge and suspended sediment loads in the watershed of the Boumessaoud Wadi (118 km2), for the period from September 1988 to August 2004, revealed the existence of annual and seasonal variability in sediment transport in this Mediterranean semi-arid catchment and demonstrated the impact of flood events, which contribute to about 71% of the overall solid tonnage in the autumn and up to 97% in the spring. The results of this analysis indicate that the annual average specific erosion is about 518 t∙km-2∙y-1. The methodological approach adopted consists of finding a regression model capable of explaining the sediment load (QS) as a function of the discharge (QL), tested by studying this relation at various temporal scales. The produced models are a power relationship type (QS = aQLb), where water discharge explains overall more than 80% of the variance in sediment yield. The identification of periods that are sediment-productive in this dynamic erosion system was studied by analysis of the evolution of the sediment concentrations in the stream. The objective of this modeling is to overcome the shortcomings of the sediment transport data available for our studied catchment

show abstract

Etude de la dynamique sédimentaire dans le bassin versant de l'Oued Bellah (Algérie)

Cited by 20 publications

References 21 publications

Hydrological study and suspended sediment transport in the MACTA: Mekerra watershed (NW - Algerian)

Hydrological study and suspended sediment transport in the MACTA: Mekerra watershed (NW - Algerian)

Journal of Water and Land Development

Transport solide dans un cours d’eau en climat semi-aride : cas du bassin versant de l’Oued Boumessaoud (nord-ouest de l’Algérie)

Contact Info

Product

Resources

About