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    On the Interactions of Internal Waves Reflecting from Slopes

    Source: Journal of Physical Oceanography:;1997:;Volume( 027 ):;issue: 009::page 2072
    Author:
    Thorpe, S. A.
    DOI: 10.1175/1520-0485(1997)027<2072:OTIOIW>2.0.CO;2
    Publisher: American Meteorological Society
    Abstract: Incident internal waves and those reflected from a uniform slope interact at second order. These interactions are considered for incident waves traveling obliquely to the slope in a uniformly stratified rotating fluid. It is found that (i) resonant interactions cannot occur unless the inclination of the slope to the horizontal, α, is less than the inclination of the wave group velocity vector to the horizontal, ?; (ii) interactions generate a nonzero Eulerian upslope flow, which is exactly balanced by a Stokes drift, so leading to zero Lagrangian upslope flow; (iii) a Stokes drift parallel to the isobaths is generated by the reflecting waves, provided the incident waves are not in a plane normal to the slope. This drift is in addition to the possible Eulerian flows along the slope, which are in geostrophic balance with a correspondingly perturbed density field and are zero in a nonrotating flow. The order of magnitude of the drift is typically 0.01 m s?1. These secondary flows do not depend on dissipation and are therefore distinct from alongslope currents associated with wave breaking in an ?internal surf zone.?
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      On the Interactions of Internal Waves Reflecting from Slopes

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    contributor authorThorpe, S. A.
    date accessioned2017-06-09T14:52:44Z
    date available2017-06-09T14:52:44Z
    date copyright1997/09/01
    date issued1997
    identifier issn0022-3670
    identifier otherams-28773.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4165926
    description abstractIncident internal waves and those reflected from a uniform slope interact at second order. These interactions are considered for incident waves traveling obliquely to the slope in a uniformly stratified rotating fluid. It is found that (i) resonant interactions cannot occur unless the inclination of the slope to the horizontal, α, is less than the inclination of the wave group velocity vector to the horizontal, ?; (ii) interactions generate a nonzero Eulerian upslope flow, which is exactly balanced by a Stokes drift, so leading to zero Lagrangian upslope flow; (iii) a Stokes drift parallel to the isobaths is generated by the reflecting waves, provided the incident waves are not in a plane normal to the slope. This drift is in addition to the possible Eulerian flows along the slope, which are in geostrophic balance with a correspondingly perturbed density field and are zero in a nonrotating flow. The order of magnitude of the drift is typically 0.01 m s?1. These secondary flows do not depend on dissipation and are therefore distinct from alongslope currents associated with wave breaking in an ?internal surf zone.?
    publisherAmerican Meteorological Society
    titleOn the Interactions of Internal Waves Reflecting from Slopes
    typeJournal Paper
    journal volume27
    journal issue9
    journal titleJournal of Physical Oceanography
    identifier doi10.1175/1520-0485(1997)027<2072:OTIOIW>2.0.CO;2
    journal fristpage2072
    journal lastpage2078
    treeJournal of Physical Oceanography:;1997:;Volume( 027 ):;issue: 009
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
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