The hydrology and sediment yield of the Sungai Air Terjun catchment, Penang Hill, Malaysia

Ismail, Wan Ruslan

doi:10.1080/02626660009492391

Cited by 10 publications

(3 citation statements)

References 7 publications

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“…The most commonly used relationship is a rating curve in the form of a power function (Walling, 1974;Ismail, 2000):…”

Section: Factors Controlling Suspended Sediment Concentration and Dynmentioning

confidence: 99%

Hysteresis effect in suspended sediment concentration in the Rybárik basin, Slovakia / Effet d'hystérèse dans la concentration des sédiments en suspension dans le bassin versant de Rybárik (Slovaquie)

Bača

2008

Hydrological Sciences Journal

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Suspended sediment dynamics influenced by rainstorms and factors controlling changes in suspended sediment concentrations, were investigated during hydrological events in a small scale, since small agricultural drainage basins can be considered as one of the most important sediment sources. Suspended sediment concentrations were measured during discharge waves in the years 1987-1990, 1992, 2000 and 2001. Positive and anti-clockwise hysteresis was observed at Rybárik basin. A procedure of isolating factors controlling suspended sediment concentrations and dynamics has given a more realistic view on production and transport of suspended sediment. It is confirmed that spatial and temporal variability of sediment availability and suspended sediment dilution by the baseflow, mainly in the case of two or more waves immediately following one after another, significantly control suspended sediment concentrations and dynamics.Key words hysteresis; Rybárik basin, Slovakia; sediment availability; suspended sediment dynamics Effet d'hystérèse dans la concentration des sédiments en suspension dans le bassin versant de Rybárik (Slovaquie)Résumé La dynamique des sédiments en suspension, sous influence de la pluie et de facteurs qui contrôlent la concentration en sédiments en suspension, a été étudiée lors d'événements hydrologiques dans un bassin de petite taille; les petits bassins versants agricoles pouvant être considérés comme une des plus importantes sources de sédiments. Les concentrations en sédiments en suspension ont été mesurées au cours de crues en 1987-1990, 1992, 2000 et 2001. Des hystérèses positives et négatives ont été observées dans le bassin versant de Rybárik. Une procédure d'isolement des facteurs qui contrôlent les concentrations et dynamiques des sédiments en suspension a donné une vision plus réaliste de la production et du transport des sédiments en suspension. Il s'avère que la variabilité spatiale et temporelle de la disponibilité des sédiments et de la dilution des sédiments par l'écoulement de base, essentiellement dans le cas de deux ou plusieurs crues successives proches, contrôle de manière significative les concentrations et la dynamique des sédiments en suspension.

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“…The most commonly used relationship is a rating curve in the form of a power function (Walling, 1974;Ismail, 2000):…”

Section: Factors Controlling Suspended Sediment Concentration and Dynmentioning

confidence: 99%

Hysteresis effect in suspended sediment concentration in the Rybárik basin, Slovakia / Effet d'hystérèse dans la concentration des sédiments en suspension dans le bassin versant de Rybárik (Slovaquie)

Bača

2008

Hydrological Sciences Journal

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“…5 SUSPENDED SEDIMENT MODELING To quantify erosion processes and suspended sediment dynamics, empirical relationships between suspended sediment concentration and water discharge are often used. A rating curve in the form of a power function is the most commonly used relationship as reported in Walling [3], Kolár [4] and Ismail [5]:…”

Section: Resultsmentioning

confidence: 99%

“…To describe the relationship between the suspended sediment concentration and water discharge, empirical models are often applied. The most commonly used model is a rating curve in the form of a power function as obtained in Walling [3], Kolár [4] and Ismail [5], where two empirically derived regression coefficients are included. The accuracy of the rating curve model is often low which is due to variations in sediment supply and depletion which result in hysteresis effects.…”

Section: Introductionmentioning

confidence: 99%

Measurement and Modeling of Suspended Sediment Dynamics in Watercourses

Stajnko¹,

Jecl²,

Perc³

2020

WIT Transactions on Engineering Sciences

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The problem of sedimentation in surface waters has considerable implications for environmental protection, but also for the use of hydropower on the watercourse and for long-term planning of flood risk management and water management. For an efficient management of suspended sediments, it is necessary to carry out appropriate measurements in order to maintain the quantity and dynamics of sediment movement as a function of changing hydraulic conditions. The data collected on site are the input for the development of a suitable model that can be used to establish a long-term plan for sediment management and to calibrate the numerical models. The paper presents an analysis of suspended sediment measurements in a Slovenian river. A correlation between concentration and discharge was investigated, especially during flood event. The suspended sediment dynamics depends on energy conditions, i.e. material is transported during high discharge events and deposited during low flow. The model of the suspended sediment concentration is a function of the water runoff and the amount of sediment deposition. Different models should be used at low discharge and at high discharge to correctly predict the amount of transported sediment concentrations. When modelling flood events, an additional sediment supply term should be added to the rating curve.

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2002

Hydrological Processes

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The hydrology and sediment yield of the Sungai Air Terjun catchment, Penang Hill, Malaysia

Cited by 10 publications

References 7 publications

Hysteresis effect in suspended sediment concentration in the Rybárik basin, Slovakia / Effet d'hystérèse dans la concentration des sédiments en suspension dans le bassin versant de Rybárik (Slovaquie)

Hysteresis effect in suspended sediment concentration in the Rybárik basin, Slovakia / Effet d'hystérèse dans la concentration des sédiments en suspension dans le bassin versant de Rybárik (Slovaquie)

Measurement and Modeling of Suspended Sediment Dynamics in Watercourses

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