Downward propagating internal waves generated at the base of the surface layer of a stratified fluid

C.L. Stevens, Jorg Imberger

    Research output: Contribution to journalArticle

    5 Citations (Scopus)

    Abstract

    Downward propagating internal waves are observed in laboratory experiments. They appear to be generated by the 'obstacle effect' beneath a turbulent surface layer in a surface stress driven stratified flow experiment in a rectangular cavity. The obstacles are the perturbations at the base of the surface layer and the shear is created by a combination of an internal seiche and the circulation in the upper layer. The proportion of energy lost from the surface layer is comparable to increases in potential energy due to vertical entrainment. Consequently, if conditions are favourable, reduction in vertical entrainment may occur.
    Original languageEnglish
    Pages (from-to)361-364
    JournalGeophysical Research Letters
    Volume21
    Issue number5
    DOIs
    Publication statusPublished - 1994

    Fingerprint

    stratified fluid
    internal waves
    internal wave
    surface layer
    surface layers
    entrainment
    fluids
    seiche
    stratified flow
    potential energy
    proportion
    cavity
    perturbation
    shear
    cavities
    energy
    experiment

    Cite this

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    title = "Downward propagating internal waves generated at the base of the surface layer of a stratified fluid",
    abstract = "Downward propagating internal waves are observed in laboratory experiments. They appear to be generated by the 'obstacle effect' beneath a turbulent surface layer in a surface stress driven stratified flow experiment in a rectangular cavity. The obstacles are the perturbations at the base of the surface layer and the shear is created by a combination of an internal seiche and the circulation in the upper layer. The proportion of energy lost from the surface layer is comparable to increases in potential energy due to vertical entrainment. Consequently, if conditions are favourable, reduction in vertical entrainment may occur.",
    author = "C.L. Stevens and Jorg Imberger",
    year = "1994",
    doi = "10.1029/94GL00070",
    language = "English",
    volume = "21",
    pages = "361--364",
    journal = "Geophysical Research Letters",
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    publisher = "American Geophysical Union",
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    Downward propagating internal waves generated at the base of the surface layer of a stratified fluid. / Stevens, C.L.; Imberger, Jorg.

    In: Geophysical Research Letters, Vol. 21, No. 5, 1994, p. 361-364.

    Research output: Contribution to journalArticle

    TY - JOUR

    T1 - Downward propagating internal waves generated at the base of the surface layer of a stratified fluid

    AU - Stevens, C.L.

    AU - Imberger, Jorg

    PY - 1994

    Y1 - 1994

    N2 - Downward propagating internal waves are observed in laboratory experiments. They appear to be generated by the 'obstacle effect' beneath a turbulent surface layer in a surface stress driven stratified flow experiment in a rectangular cavity. The obstacles are the perturbations at the base of the surface layer and the shear is created by a combination of an internal seiche and the circulation in the upper layer. The proportion of energy lost from the surface layer is comparable to increases in potential energy due to vertical entrainment. Consequently, if conditions are favourable, reduction in vertical entrainment may occur.

    AB - Downward propagating internal waves are observed in laboratory experiments. They appear to be generated by the 'obstacle effect' beneath a turbulent surface layer in a surface stress driven stratified flow experiment in a rectangular cavity. The obstacles are the perturbations at the base of the surface layer and the shear is created by a combination of an internal seiche and the circulation in the upper layer. The proportion of energy lost from the surface layer is comparable to increases in potential energy due to vertical entrainment. Consequently, if conditions are favourable, reduction in vertical entrainment may occur.

    U2 - 10.1029/94GL00070

    DO - 10.1029/94GL00070

    M3 - Article

    VL - 21

    SP - 361

    EP - 364

    JO - Geophysical Research Letters

    JF - Geophysical Research Letters

    SN - 0094-8276

    IS - 5

    ER -