A Mathematical Model of the Effect of a Tidal Barrier on Siltation in an Estuary

Owen, Michael W.; Odd, N. V. M.

doi:10.1007/978-1-4613-4592-3_20

Cited by 6 publications

(3 citation statements)

References 1 publication

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“…In the area known as the Mud Reaches, 45-53 km upstream of the mouth, there are extensive deposits of silt, and a turbidity maximum with SSC ranging between 0. 1-5.5 kg m^^ (Owen and Odd, 1970). Field investigations (Inglis and Allen, 1957) and two-layer numerical modeling of Odd and Owen (1972) found that the null point is usually located in this area, and the turbidity maximum and sedimentation there are due mainly to silt transported in the lower layers jfrom both the upstream and downstream directions.…”

Section: Thames Rivermentioning

confidence: 97%

An examination of estuarine lutocline dynamics /

Jiang¹

1999

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Location map of Jiaojiang estuary, China. Depths are in meters below lowest astronomical tide. Ml and M2 are mooring sites (Table 4.1); Cl, C2, C3 and C4 are velocity measurement and SSC profile sampling stations (Table 4.1); C6 is the site of ASSM (Table 4.1) and T1-T6 are tide stations. The region between double dotted lines is the modeled domain 4.2 A representative frequency distribution of suspended sediment (dispersed) size in the Jiaojiang estuary 81

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Section: Thames Rivermentioning

confidence: 97%

An examination of estuarine lutocline dynamics /

Jiang¹

1999

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“…Owen [77] suggested that the impact of temperature on the floc settling velocity is primarily dependent on the viscosity of the suspending liquid. According to the Stokes equation, higher temperatures correspond to lower kinematic viscosity coefficients, resulting in faster sediment settling velocities.…”

Section: Temperaturementioning

confidence: 99%

Summary of Experiments and Influencing Factors of Sediment Settling Velocity in Still Water

Li,

Xu,

Zhan

et al. 2024

Water

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Sediment deposition significantly impacts soil erosion processes, consequently influencing the geographical morphology and surrounding environments of reservoirs and estuaries. Given the intricate nature of sediment deposition, it is imperative to consolidate and analyze existing research findings. Presently, studies on sediment settling velocity primarily employ theoretical, laboratory, and field experimentation methods. Theoretical approaches, rooted in mechanics, examine the various forces acting on sediment particles in water to derive settling velocity equations. However, they often overlook external factors like temperature, salinity, organic matter, and pH. Although laboratory experiments scrutinize the influence of these external factors on sedimentation velocity, sediment settling is not solely influenced by individual factors but rather by their collective interplay. Field observations offer the most accurate depiction of sediment deposition rates. However, the equipment used in such experiments may disrupt the natural sedimentation process and damage flocs. Moreover, measurements of sediment particle size from different instruments yield varied results. Additionally, this paper synthesizes the impact of suspended sediment concentration, particle size, shape, temperature, salinity, and organic matter on sediment settling velocity. Future research should focus on innovating new laboratory observation methods for sediment settling velocity and utilizing advanced scientific and technological tools for on-site measurements to provide valuable insights for further investigation into sediment settling velocity.

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“…The dynamics of estuaries are influenced by the seasonal cycles linked to the floods caused by the tides (downstream) and the inflow of water from the catchment area (upstream). The beds, meanders, swamps, banks, and terraces of estuaries are always subject to the dynamics of the currents that can reshape them (Hansen and Rattray, 1966;Owen and Odd, 1972;Lambiase, 1980;Amos and Mosher, 1985;Shi et al, 1995;Strang and Fernando, 2001;Orton and Kineke, 2001). In all estuaries, the bed, meanders, banks, and terraces are constantly reshaped by the water flows cycles; by continued or alternative filling/erosion of materials; by different water levels and different salinity values, by suspensions coming from river or from the sea, creating a "permanently unstable" area.…”

Section: General Concepts and Definitionsmentioning

confidence: 99%

Plant Landscape and Models of French Atlantic Estuarine Systems. Extended Summary of the Doctoral Thesis

Cianfaglione

2021

Transylvanian Review of Systematical and Ecological Research

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The present study proposes a theoretical common model of environmental gradients and functioning of vegetation and Plant Landscape of the French Atlantic estuarine systems. This model offers a basis to improve classification and ecological studies of estuarine systems, and to helps the monitoring and assessment of land uses, land forms transformation and human impacts, thanks to the develop of a spatio-temporal predictive model based on actual and potential vegetation following a dynamico-catenal approach. In eight selected estuaries, fieldworks was undertook for a total of 98,315 ha highlighting two vegetation series and four geopermaseries, corresponding to 131 plant associations, 60 alliances, 43 orders, and 28 classes. The vegetation of three representative estuaries was mapped, for a total of 74,433 ha. A synthetic scheme of estuary vegetation landscape is proposed, integrating geographical and ecological gradients as well as geomorphologic forms.

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A Mathematical Model of the Effect of a Tidal Barrier on Siltation in an Estuary

Cited by 6 publications

References 1 publication

An examination of estuarine lutocline dynamics /

An examination of estuarine lutocline dynamics /

Summary of Experiments and Influencing Factors of Sediment Settling Velocity in Still Water

Plant Landscape and Models of French Atlantic Estuarine Systems. Extended Summary of the Doctoral Thesis

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