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    Geometry-Forced Coherent Structures as a Model of the Kuroshio Large Meander

    Source: Journal of Physical Oceanography:;1989:;Volume( 019 ):;issue: 001::page 130
    Author:
    Yamagata, Toshio
    ,
    Umatani, Shin-Ichiro
    DOI: 10.1175/1520-0485(1989)019<0130:GFCSAA>2.0.CO;2
    Publisher: American Meteorological Society
    Abstract: The bimodality of the Kuroshio path south of Japan is presented from a new viewpoint of direct interaction of current with local coastal geometry. By solving the barotropic quasi-geostrophic equation in a channel with steplike coastal geometry, we demonstrate that the model Kuroshio can actually show the localized, bimodal behavior for a reasonable range of inlet current speed. The amplitude of the large meander is approximately given by 2Umax/?. In contrast to all ?nonlocal? model results, our local coherent structures have nothing to do with the basin-size geometry such as Kyushu and the Izu-Ogasawara Ridge. In general, the present study suggests that even a small feature of coastline geometry may trigger a big change in a nearshore current.
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      Geometry-Forced Coherent Structures as a Model of the Kuroshio Large Meander

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4164464
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    contributor authorYamagata, Toshio
    contributor authorUmatani, Shin-Ichiro
    date accessioned2017-06-09T14:49:06Z
    date available2017-06-09T14:49:06Z
    date copyright1989/01/01
    date issued1989
    identifier issn0022-3670
    identifier otherams-27457.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4164464
    description abstractThe bimodality of the Kuroshio path south of Japan is presented from a new viewpoint of direct interaction of current with local coastal geometry. By solving the barotropic quasi-geostrophic equation in a channel with steplike coastal geometry, we demonstrate that the model Kuroshio can actually show the localized, bimodal behavior for a reasonable range of inlet current speed. The amplitude of the large meander is approximately given by 2Umax/?. In contrast to all ?nonlocal? model results, our local coherent structures have nothing to do with the basin-size geometry such as Kyushu and the Izu-Ogasawara Ridge. In general, the present study suggests that even a small feature of coastline geometry may trigger a big change in a nearshore current.
    publisherAmerican Meteorological Society
    titleGeometry-Forced Coherent Structures as a Model of the Kuroshio Large Meander
    typeJournal Paper
    journal volume19
    journal issue1
    journal titleJournal of Physical Oceanography
    identifier doi10.1175/1520-0485(1989)019<0130:GFCSAA>2.0.CO;2
    journal fristpage130
    journal lastpage138
    treeJournal of Physical Oceanography:;1989:;Volume( 019 ):;issue: 001
    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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