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    The Interaction of a Two-Layer Isolated Mesoscale Eddy With Bottom Topography

    Source: Journal of Physical Oceanography:;1983:;Volume( 013 ):;issue: 009::page 1681
    Author:
    Smith, David C.
    ,
    O'Brien, J. J.
    DOI: 10.1175/1520-0485(1983)013<1681:TIOATL>2.0.CO;2
    Publisher: American Meteorological Society
    Abstract: The propagation of an isolated mesoscale eddy onto a western bounding topographic slope is examined through the use of a two-layer, primitive equation, numerical model. Variable parameters in the study are sense of rotation (cyclonic/anticyclonic), vertical structure (baroclinic, barotropic), and layer thickness ratio (H1/H2). Eddy size and strength (rotational velocity) and frictional parameterization are fixed. Dispersion in the isolated eddy is induced by planetary and topographic beta-effects, giving the eddy an asymmetric distribution. This asymmetric distribution allows for nonlinear self-advective propagation tendencies. These nonlinear tendencies play a key role in the direction of propagation of the eddy. Specifically, in a quiescient background, an anticyclone can have eastward propagation tendencies which can overcome planetary and topographic beta-effects. Conversely, cyclones can have westward propagation velocities which are augmented (greater than maximum Rossby wave phase speed) by the presence of a topographic slope. This suggests that cyclones may be more likely to propagate onto a continental shelf region than their anticyclonic counterparts of equal strength.
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      The Interaction of a Two-Layer Isolated Mesoscale Eddy With Bottom Topography

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4163483
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    contributor authorSmith, David C.
    contributor authorO'Brien, J. J.
    date accessioned2017-06-09T14:46:44Z
    date available2017-06-09T14:46:44Z
    date copyright1983/09/01
    date issued1983
    identifier issn0022-3670
    identifier otherams-26574.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4163483
    description abstractThe propagation of an isolated mesoscale eddy onto a western bounding topographic slope is examined through the use of a two-layer, primitive equation, numerical model. Variable parameters in the study are sense of rotation (cyclonic/anticyclonic), vertical structure (baroclinic, barotropic), and layer thickness ratio (H1/H2). Eddy size and strength (rotational velocity) and frictional parameterization are fixed. Dispersion in the isolated eddy is induced by planetary and topographic beta-effects, giving the eddy an asymmetric distribution. This asymmetric distribution allows for nonlinear self-advective propagation tendencies. These nonlinear tendencies play a key role in the direction of propagation of the eddy. Specifically, in a quiescient background, an anticyclone can have eastward propagation tendencies which can overcome planetary and topographic beta-effects. Conversely, cyclones can have westward propagation velocities which are augmented (greater than maximum Rossby wave phase speed) by the presence of a topographic slope. This suggests that cyclones may be more likely to propagate onto a continental shelf region than their anticyclonic counterparts of equal strength.
    publisherAmerican Meteorological Society
    titleThe Interaction of a Two-Layer Isolated Mesoscale Eddy With Bottom Topography
    typeJournal Paper
    journal volume13
    journal issue9
    journal titleJournal of Physical Oceanography
    identifier doi10.1175/1520-0485(1983)013<1681:TIOATL>2.0.CO;2
    journal fristpage1681
    journal lastpage1697
    treeJournal of Physical Oceanography:;1983:;Volume( 013 ):;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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