Engineering calculations of suspended sediment

Lane, E. W.; Kalinske, A. A.

doi:10.1029/tr022i003p00603

Cited by 120 publications

(26 citation statements)

References 5 publications

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“…Though not described in this paper, Lane and Kalinske (1941), Einstein (1950), Brooks (1963), and Chang et al (1965) developed alternative methods to calculate q s . The two general approaches used to calculate the total noncohesive sediment load in an open channel consist of: (1) adding the separately estimated bedload and suspended load and (2) using a total load function that directly estimates the total amount of bedload and suspended load transport.…”

Section: Noncohesive Sediment Transportmentioning

confidence: 99%

Processes, Assessment and Remediation of Contaminated Sediments

2014

SERDP/ESTCP Environmental Remediation Technology

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Section: Noncohesive Sediment Transportmentioning

confidence: 99%

Processes, Assessment and Remediation of Contaminated Sediments

2014

SERDP/ESTCP Environmental Remediation Technology

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“…One of the most exciting advances made in the past few decades was by Ni and Wang (1991), who proved that a similar differential equation would be finally derived no matter which of the aforementioned theories was selected, which directly led to a generalized formula as an universal integral solution of the basic equation. Ni and his colleagues also demonstrated that most well-known formulas such as those proposed by Rouse (1937), Lane and Kalinske (1941), Hunt (1954), Ananian and Gerbashian (1965), Zagustin (1968), Laursen (1980), and Itakura and Kishi (1980) were merely special cases of the generalized formula under different conditions. This stimulated further studies which are still on-going (Cheng et al, 2013;Kundu and Ghoshal, 2014), the aim being to extend the general expression to an increasingly wide range of applicability.…”

Section: Sediment Fluxmentioning

confidence: 99%

Sediment Flux and Its Environmental Implications

2014

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Sediment transport in fluvial systems is a key driver of basin-wide global soil loss, river sedimentation, and the movement and transformation of organic, inorganic, and nutrient materials, all of which can contribute to severe eco-environmental degradation. Since the late 1800s, much research effort has focused on the physics of sediment entrainment, transport, and deposition by river flows. This paper reviews ongoing research aimed at considering the simultaneous physical, chemical and biological processes that characterize riverine sediment flux. Four related issues are considered: riverine sediment flux; soil erosion and chemical transport; fluxes of dissolved organic carbon; and sediment-induced CO 2 emission/sequestration.Modelling of sediment flux has moved beyond empirical and statistical approaches to that of a generalized form of the universal integral solution of the basic flux equation, which is now anticipated to lead to a wide range of applications. Whereas soil erosion and riverine chemical transport are now known to cause soil degradation and reduced water quality, limited progress has been made to date on the quantification of erosion rates. As soils erode, CO 2 is emitted at erosion and transport sites and sequestered at deposition sites, the net effect being carbon sequestration. Howe ver, the rates of CO 2 emission/sequestration vary widely, owing to the large spatial variations in soil type, land-slope, rainfall intensity, etc. It is now well established that dissolved organic carbon (DOC) concentrations and fluxes have been increasing over the past two decades, due to reduced atmospheric sulphur concentration, climate warming, and changes in precipitation patterns. The research discussed herein provides insight into the interaction between sediment and multiple material substances, leading to a better understanding of fluvial river ecosystems, which is essential for maintaining river health. KeywordsSediment flux, soil erosion, environmental implication, chemical transport, dissolved organic carbon, CO 2 flux, PreambleConventionally, the main surface material transport processes associated with sediment movement in a river basin may be categorized as runoff and sediment yield, soil erosion and nutrient loss, and river geomorphological evolution. The material transport processes tend to be considered by hydrologists, sedimentologists, hydraulic engineers, agronomists, ecologists, and environmentalists (Kisi et al., 2013;Van Rijn et al., 2013;Miller et al., 2014), whereas the geomorphic evolution of a watershed is the primary concern of geomorphologists (Provansal et al., 2014;Toone et al., 2014).In recent years, the environmental effects of sediment movement through a river basin ha ve been investigated in terms of variations in natural organic matter, nutrients, and contaminants in water-sediment two-phase systems, extending to multiphase systems of water-sediment-carbon, water-sediment-nitrogen, and water-sediment-phosphorous, owing to the considerable annual losses of carbon, tota...

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“…As far as the suspended load is concerned, the distribution of the concentration of solids has been derived by linking such assumptions with further hypotheses on the nature of the stream turbulence and of sediment concentration at a reference height on the river bed (e.g. Rouse, 1937;Lane and Kalinske, 1941). However, one of the main criticisms of the hydraulically based approach is that the sediment transport is an intermittent process, strongly controlled by sediment availability.…”

Section: Introductionmentioning

confidence: 99%

Distributed evaluation of the contribution of soil erosion to the sediment yield from a watershed

Pilotti

Bacchi

1997

Earth Surf. Process. Landforms

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The correct determination of the sediment yield from a basin is of paramount importance in several hydraulic and environmental applications, such as the evaluation of the storage reduction of artificial reservoirs. However, due to the highly episodic nature of sediment supply and transport in many environments and to the extreme complexity of the processes involved, the evaluation of the sediment load in a river is still highly uncertain. When the time scale of interest is sufficiently long, and when the primary sediment source comes from distributed erosion in the watershed, the problem can be tackled in an indirect fashion, by computing the contribution to the annual suspended sediment yield from soil erosion. In order to accomplish this task, we propose a distributed application of the widely used USLE formula. The formula is automatically applied along drainage networks derived from a digital elevation model and properly modified to take into account the presence of deposition zones in the watershed.

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Engineering calculations of suspended sediment

Cited by 120 publications

References 5 publications

Processes, Assessment and Remediation of Contaminated Sediments

Processes, Assessment and Remediation of Contaminated Sediments

Sediment Flux and Its Environmental Implications

Distributed evaluation of the contribution of soil erosion to the sediment yield from a watershed

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