Results 251 to 260 of about 152,066 (306)

Sediment Load: Concentration and Transport

2017
Amount of suspended sediment in water is measured by collecting water samples from different depths during high and low tide . Rate of transportation of bed load has been computed using well accepted empirical equations. Suspended sediment amount ranges between 3.1 and 5.05 gm/l in non-monsoon season and 4.97 and 6.5 gm/l in monsoon season.
Swapan Kumar Maity, Ramkrishna Maiti
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Modeling Mixed Sediment Suspended Load Profiles

Journal of Hydraulic Engineering, 1989
Potential errors in calculated vertical suspended sediment concentration profiles in river flows carrying mixed sediments are investigated. These profiles are usually obtained through application of a standard ‘diffusion‐dispersion’ model; however, such models are normally formulated on the basis of a unique grain size for the sediment. Accordingly, in
Brian Morse, Ronald D. Townsend
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Dispersion of Contaminated Sediment Bed Load

Journal of the Hydraulics Division, 1973
Dispersion of instantaneously released contaminated bed sediments is analyzed within the framework of a Lagrangian probabilistic model. The time and space concentration distributions, with the parameters computed on the basis of the same rate of mass movement and a constant rate of spread, approach Gaussian form asymptotically. A procedure is suggested
Hsieh Weh Shen, Hin Fatt Cheong
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BED LOAD TRANSPORT OF BIMODAL SEDIMENTS

ISH Journal of Hydraulic Engineering, 2009
ABSTRACT Computation of bed load transport of bimodal sediments is a complicated task due to complex interaction of the grain sizes in two modes. The data on bimodal sediments from the previous investigations is used to check the performance of existing method which is based on data of unimodal and weakly bimodal sediments (Patel et al., 1996). Further,
P. L. Patel, Mayank Jain
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Suspended Load Transport of Sediment Mixtures

Journal of Hydraulic Engineering, 1986
Careful experiments were conducted on alluvial beds of four sediment mixtures having different arithmetic mean diameters and standard deviations. The suspended load transport rates of individual fractions were measured and compared with both Einstein's and Holtroff's methods of calculation of suspended load for individual fractions.
Belle R. Samaga, Kittur G. Ranga Raju, Ramchandra J. Garde   +2 more
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Frequency distribution for suspended sediment loads

Water Resources Research, 1989
A method is described for deriving a frequency distribution for suspended sediment loads. The method uses a curvilinear regression relation between the logarithm of annual flood peaks and the logarithm of suspended sediment loads associated with that flood peak.
R. S. Parker, Brent M. Troutman
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Suspended Load Transport of Bio-sediment

2020
The previous chapter introduced the bedload transport of bio-sediment, i.e. bio-sediment transported near the bed layer. Under certain flow conditions, bio-sediment will become suspended into the overlying water layer and be transported as suspended load.
Hongwei Fang, Lei Huang, Huiming Zhao, Wei Cheng, Yishan Chen, Mehdi Fazeli, Qianqian Shang   +6 more
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Sediment load reduction in Chinese rivers

International Journal of Sediment Research, 2008
In this paper, the changes in the annual runoff and sediment transport have been assessed by using the long term observation data from 10 gauging stations on 10 large rivers across China from far north to far south. It is found that the annual sediment yield has generally had a decreasing trend in the past half century.
Cheng LIU, Jueyi SUI, Zhao-Yin WANG
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Phosphorus accumulation in sediments and internal loading

Hydrobiological Bulletin, 1986
Two simple conceptual approaches for the description of phosphorus accumulation and release from sediments are presented. The first model is a mass-balance over the well-mixed top-layer, and demonstrates the enhanced initial effect of sediment dilution on the long-term accumulation, which is magnified in the resulting internal loading, as a consequence
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Sediment loads in the Amazon River

Nature, 1979
ESTIMATES published in the past 20 years of the sediment load delivered to the sea by the Amazon River range from 4 to 10 × 108 tonnes yr−1 Estimates published around 1960, when few data were available on either the sediment concentration or the river discharge, were in the range 9–10 × 108 tonnes yr−1 (refs 1, 2). Estimates published in 1967 and 1968,
ROBERT H. MEADE, CARL F. NORDIN, WILLIAM F. CURTIS, FLAVIO M. COSTA RODRIGUES, CARLOS M. DO VALE, JOHN M. EDMOND   +5 more
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