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    Maps from the Mid-Ocean Dynamics Experiment: Part II. Potential vorticity and its Conservation

    Source: Journal of Physical Oceanography:;1976:;Volume( 006 ):;issue: 006::page 828
    Author:
    McWilliams, James C.
    DOI: 10.1175/1520-0485(1976)006<0828:MFTMOD>2.0.CO;2
    Publisher: American Meteorological Society
    Abstract: Observations of float trajectories and vertical density profiles from the Mid-Ocean Dynamics Experiment are analyzed in terms of a likely equation of motion for mesoscale eddies involving the conservation of quasi-geostrophic potential vorticity along horizontal particle paths. From maps of the potential vorticity a careful scale analysis is made to estimate both local values for the Rossby number and the relative dynamical contributions of the planetary vorticity gradient, the relative vorticity and the stretching of vortex lines in the vertical. The proposed conservation is verified, to within estimates of the likely error, at several depths where this error is sufficiently small. Furthermore, two regimes in time are found, one in which the dynamical balances are highly nonlinear and another, for longer time scales, in which they are marginally linear.
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      Maps from the Mid-Ocean Dynamics Experiment: Part II. Potential vorticity and its Conservation

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4162453
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    contributor authorMcWilliams, James C.
    date accessioned2017-06-09T14:44:22Z
    date available2017-06-09T14:44:22Z
    date copyright1976/11/01
    date issued1976
    identifier issn0022-3670
    identifier otherams-25647.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4162453
    description abstractObservations of float trajectories and vertical density profiles from the Mid-Ocean Dynamics Experiment are analyzed in terms of a likely equation of motion for mesoscale eddies involving the conservation of quasi-geostrophic potential vorticity along horizontal particle paths. From maps of the potential vorticity a careful scale analysis is made to estimate both local values for the Rossby number and the relative dynamical contributions of the planetary vorticity gradient, the relative vorticity and the stretching of vortex lines in the vertical. The proposed conservation is verified, to within estimates of the likely error, at several depths where this error is sufficiently small. Furthermore, two regimes in time are found, one in which the dynamical balances are highly nonlinear and another, for longer time scales, in which they are marginally linear.
    publisherAmerican Meteorological Society
    titleMaps from the Mid-Ocean Dynamics Experiment: Part II. Potential vorticity and its Conservation
    typeJournal Paper
    journal volume6
    journal issue6
    journal titleJournal of Physical Oceanography
    identifier doi10.1175/1520-0485(1976)006<0828:MFTMOD>2.0.CO;2
    journal fristpage828
    journal lastpage846
    treeJournal of Physical Oceanography:;1976:;Volume( 006 ):;issue: 006
    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
    yabeshDSpacePersian