Some observations on the effect of vertical density gradients on estuarine turbulent transport processes

J. R. West, K. O. K. Oduyemi*, K. Shiono

*Corresponding author for this work

    Research output: Contribution to journalArticle

    11 Citations (Scopus)

    Abstract

    Measurements of the turbulent fluctuations of the vertical and horizontal components of velocity, salinity and suspended solids concentration have been made near to the limit of salinity intrusion in a moderately high tidal range estuary. Velocity and salinity were monitored at four points up to 3 m above the bed and suspended solids concentration was monitored at 0·5 m above the bed. The data show that the vertical gradients created by solutes and particulate matter affect the velocity turbulence field and hence modify the turbulent mean velocity field. Turbulent fluctuations can be generated either internally or at the bed. The velocity turbulence field is shown to be dependent on relative depth, local gradient Richardson number and acceleration effects. The scalar turbulence fields are shown to depend on at least relative depth, the vertical component of the turbulent velocity fluctuations and the relevant scalar gradient. The mixing length functions used to quantify the turbulent transport processes are shown to depend on the local gradient Richardson number.
    Original languageEnglish
    Pages (from-to)365-383
    Number of pages19
    JournalEstuarine, Coastal and Shelf Science
    Volume32
    Issue number4
    DOIs
    Publication statusPublished - Apr 1991

    Fingerprint

    transport process
    Richardson number
    turbulence
    salinity
    tidal range
    solutes
    effect
    particulate matter
    solute
    particulates
    estuaries
    estuary

    Cite this

    @article{89b5abc29e9f40ddb210a5a6db6f9f03,
    title = "Some observations on the effect of vertical density gradients on estuarine turbulent transport processes",
    abstract = "Measurements of the turbulent fluctuations of the vertical and horizontal components of velocity, salinity and suspended solids concentration have been made near to the limit of salinity intrusion in a moderately high tidal range estuary. Velocity and salinity were monitored at four points up to 3 m above the bed and suspended solids concentration was monitored at 0·5 m above the bed. The data show that the vertical gradients created by solutes and particulate matter affect the velocity turbulence field and hence modify the turbulent mean velocity field. Turbulent fluctuations can be generated either internally or at the bed. The velocity turbulence field is shown to be dependent on relative depth, local gradient Richardson number and acceleration effects. The scalar turbulence fields are shown to depend on at least relative depth, the vertical component of the turbulent velocity fluctuations and the relevant scalar gradient. The mixing length functions used to quantify the turbulent transport processes are shown to depend on the local gradient Richardson number.",
    author = "West, {J. R.} and Oduyemi, {K. O. K.} and K. Shiono",
    year = "1991",
    month = "4",
    doi = "10.1016/0272-7714(91)90049-H",
    language = "English",
    volume = "32",
    pages = "365--383",
    journal = "Estuarine, Coastal and Shelf Science",
    issn = "0272-7714",
    publisher = "Academic Press Inc.",
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    Some observations on the effect of vertical density gradients on estuarine turbulent transport processes. / West, J. R.; Oduyemi, K. O. K.; Shiono, K.

    In: Estuarine, Coastal and Shelf Science, Vol. 32, No. 4, 04.1991, p. 365-383.

    Research output: Contribution to journalArticle

    TY - JOUR

    T1 - Some observations on the effect of vertical density gradients on estuarine turbulent transport processes

    AU - West, J. R.

    AU - Oduyemi, K. O. K.

    AU - Shiono, K.

    PY - 1991/4

    Y1 - 1991/4

    N2 - Measurements of the turbulent fluctuations of the vertical and horizontal components of velocity, salinity and suspended solids concentration have been made near to the limit of salinity intrusion in a moderately high tidal range estuary. Velocity and salinity were monitored at four points up to 3 m above the bed and suspended solids concentration was monitored at 0·5 m above the bed. The data show that the vertical gradients created by solutes and particulate matter affect the velocity turbulence field and hence modify the turbulent mean velocity field. Turbulent fluctuations can be generated either internally or at the bed. The velocity turbulence field is shown to be dependent on relative depth, local gradient Richardson number and acceleration effects. The scalar turbulence fields are shown to depend on at least relative depth, the vertical component of the turbulent velocity fluctuations and the relevant scalar gradient. The mixing length functions used to quantify the turbulent transport processes are shown to depend on the local gradient Richardson number.

    AB - Measurements of the turbulent fluctuations of the vertical and horizontal components of velocity, salinity and suspended solids concentration have been made near to the limit of salinity intrusion in a moderately high tidal range estuary. Velocity and salinity were monitored at four points up to 3 m above the bed and suspended solids concentration was monitored at 0·5 m above the bed. The data show that the vertical gradients created by solutes and particulate matter affect the velocity turbulence field and hence modify the turbulent mean velocity field. Turbulent fluctuations can be generated either internally or at the bed. The velocity turbulence field is shown to be dependent on relative depth, local gradient Richardson number and acceleration effects. The scalar turbulence fields are shown to depend on at least relative depth, the vertical component of the turbulent velocity fluctuations and the relevant scalar gradient. The mixing length functions used to quantify the turbulent transport processes are shown to depend on the local gradient Richardson number.

    U2 - 10.1016/0272-7714(91)90049-H

    DO - 10.1016/0272-7714(91)90049-H

    M3 - Article

    VL - 32

    SP - 365

    EP - 383

    JO - Estuarine, Coastal and Shelf Science

    JF - Estuarine, Coastal and Shelf Science

    SN - 0272-7714

    IS - 4

    ER -