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    Lagrangian Eddy Scales in the Northern Atlantic Ocean

    Source: Journal of Physical Oceanography:;2002:;Volume( 032 ):;issue: 009::page 2425
    Author:
    Lumpkin, Rick
    ,
    Treguier, Anne-Marie
    ,
    Speer, Kevin
    DOI: 10.1175/1520-0485(2002)032<2425:LESITN>2.0.CO;2
    Publisher: American Meteorological Society
    Abstract: Eddy time and length scales are calculated from surface drifter and subsurface float observations in the northern Atlantic Ocean. Outside the energetic Gulf Stream, subsurface timescales are relatively constant at depths from 700 m to 2000 m. Length scale and the characteristic eddy speed decrease with increasing depth below 700 m, but length scale stays relatively constant in the upper several hundred meters of the Gulf Stream. It is suggested that this behavior is due to the Lagrangian sampling of the mesoscale field, in limits set by the Eulerian eddy scales and the eddy kinetic energy. In high-energy regions of the surface and near-surface North Atlantic, the eddy field is in the ?frozen field? Lagrangian sampling regime for which the Lagrangian and Eulerian length scales are proportional. However, throughout much of the deep ocean interior, the eddy field may be in the ?fixed float? regime for which the Lagrangian and Eulerian timescales are nearly equal. This does not necessarily imply that the deep interior is nearly linear, as fixed-float sampling is possible in a flow field of O(1) nonlinearity.
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      Lagrangian Eddy Scales in the Northern Atlantic Ocean

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4166993
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    contributor authorLumpkin, Rick
    contributor authorTreguier, Anne-Marie
    contributor authorSpeer, Kevin
    date accessioned2017-06-09T14:55:24Z
    date available2017-06-09T14:55:24Z
    date copyright2002/09/01
    date issued2002
    identifier issn0022-3670
    identifier otherams-29733.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4166993
    description abstractEddy time and length scales are calculated from surface drifter and subsurface float observations in the northern Atlantic Ocean. Outside the energetic Gulf Stream, subsurface timescales are relatively constant at depths from 700 m to 2000 m. Length scale and the characteristic eddy speed decrease with increasing depth below 700 m, but length scale stays relatively constant in the upper several hundred meters of the Gulf Stream. It is suggested that this behavior is due to the Lagrangian sampling of the mesoscale field, in limits set by the Eulerian eddy scales and the eddy kinetic energy. In high-energy regions of the surface and near-surface North Atlantic, the eddy field is in the ?frozen field? Lagrangian sampling regime for which the Lagrangian and Eulerian length scales are proportional. However, throughout much of the deep ocean interior, the eddy field may be in the ?fixed float? regime for which the Lagrangian and Eulerian timescales are nearly equal. This does not necessarily imply that the deep interior is nearly linear, as fixed-float sampling is possible in a flow field of O(1) nonlinearity.
    publisherAmerican Meteorological Society
    titleLagrangian Eddy Scales in the Northern Atlantic Ocean
    typeJournal Paper
    journal volume32
    journal issue9
    journal titleJournal of Physical Oceanography
    identifier doi10.1175/1520-0485(2002)032<2425:LESITN>2.0.CO;2
    journal fristpage2425
    journal lastpage2440
    treeJournal of Physical Oceanography:;2002:;Volume( 032 ):;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
    yabeshDSpacePersian