The Behaviour of Suspended Sediments and Muds in an Estuary

The fundamental behaviour of suspended sediments and muds was investigated using an annular flume with the condition of cyclically changed shear stress. The results from two series of experiments showed that particle sizes which participate in the variation of suspended sediments were restricted to...

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Bibliographic Details
Published in:Water science and technology 1985-01, Vol.17 (6-7), p.915-927
Main Authors: Umita, T, Kusuda, T, Awaya, Y, Onuma, M, Futawatari, T
Format: Article
Language:English
Subjects:
Computer simulation
Deposition
Erosion
Estuaries
Estuarine dynamics
Flocculation
Flumes
Fluxes
Sediment
Sediments
Shear stress
Suspended sediments
Tidal cycles
Tides
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Summary:The fundamental behaviour of suspended sediments and muds was investigated using an annular flume with the condition of cyclically changed shear stress. The results from two series of experiments showed that particle sizes which participate in the variation of suspended sediments were restricted to smaller sizes of the material. It was also found that the cyclically steady state was finally attained with respect to the suspended sediments as the tidal cycle repeated. In that state the suspended sediments were subject to three phenomena: erosion; deposition with dispersed state; and deposition with flocculation. A simple model on the suspended sediments in an estuary was developed and its behaviour in a model estuary was simulated by using the fluxes of erosion and deposition in the experiment. That model well described the variation of the suspended sediments and muds.
ISSN:0273-1223
1996-9732
DOI:10.2166/wst.1985.0190