YaBeSH Engineering and Technology Library

    • Journals
    • PaperQuest
    • YSE Standards
    • YaBeSH
    • Login
    View Item 
    •   YE&T Library
    • AMS
    • Journal of Physical Oceanography
    • View Item
    •   YE&T Library
    • AMS
    • Journal of Physical Oceanography
    • View Item
    • All Fields
    • Source Title
    • Year
    • Publisher
    • Title
    • Subject
    • Author
    • DOI
    • ISBN
    Advanced Search
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Archive

    Effects of Stratification and Bottom Topography on the Kuroshio Path Variation South of Japan. Part I: Dependence of the Path Selection on Velocity

    Source: Journal of Physical Oceanography:;1999:;Volume( 029 ):;issue: 009::page 2419
    Author:
    Masuda, Shuhei
    ,
    Akitomo, Kazunori
    ,
    Awaji, Toshiyuki
    DOI: 10.1175/1520-0485(1999)029<2419:EOSABT>2.0.CO;2
    Publisher: American Meteorological Society
    Abstract: Numerical experiments are executed using a two-layer inflow?outflow ocean model with simplified geometry to investigate the effects of stratification and bottom topography on the path variation of the Kuroshio south of Japan. In a flat-bottom ocean, the dependence of the Kuroshio path selection on its inflow velocity Vmax is basically the same as in a barotropic ocean, that is, the Kuroshio takes a straight path at low Vmax (regime I), a meandering path at high Vmax (regime II), and both paths at intermediate Vmax (regime III: multiple equilibrium state). However, the range of regime III shifts to higher Vmax by 0.10?0.30 m s?1. Stratification causes and maintains the offshore shift of the current path south of Kyushu through the conservation of potential vorticity. As a result, a small meander stagnates southeast of Kyushu, not developing into a large meander even for higher Vmax since the vorticity supply from the coast is reduced. For the same reason, higher Vmax is needed to maintain a meandering path. Bottom topographic features such as a continental slope and ridge significantly change the path selection. A straight path appears for the whole experimental range of Vmax and a meandering path only exists at intermediate Vmax. The continental slope along the southern coast of Japan captures the main flow to permit a straight path for all Vmax. Further, the Izu Ridge inhibits a meandering path hanging over the western flank of the ridge and narrows the range of Vmax in which the meandering state exists. The transition induced by monotonic changes of Vmax is significantly affected for a jump from a straight to a meandering path but not affected as much for a reverse jump. In a flat-bottom ocean, the enlargement of a small meander due to baroclinicity causes a quick transition from a straight to a meandering path with a large velocity change while the transition is impeded for a small velocity change. No transition occurs by a monotonic increase in Vmax with bottom topography since a straight path can exist for all Vmax.
    • Download: (402.6Kb)
    • Show Full MetaData Hide Full MetaData
    • Item Order
    • Go To Publisher
    • Price: 5000 Rial
    • Statistics

      Effects of Stratification and Bottom Topography on the Kuroshio Path Variation South of Japan. Part I: Dependence of the Path Selection on Velocity

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/4166313
    Collections
    • Journal of Physical Oceanography

    Show full item record

    contributor authorMasuda, Shuhei
    contributor authorAkitomo, Kazunori
    contributor authorAwaji, Toshiyuki
    date accessioned2017-06-09T14:53:41Z
    date available2017-06-09T14:53:41Z
    date copyright1999/09/01
    date issued1999
    identifier issn0022-3670
    identifier otherams-29120.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4166313
    description abstractNumerical experiments are executed using a two-layer inflow?outflow ocean model with simplified geometry to investigate the effects of stratification and bottom topography on the path variation of the Kuroshio south of Japan. In a flat-bottom ocean, the dependence of the Kuroshio path selection on its inflow velocity Vmax is basically the same as in a barotropic ocean, that is, the Kuroshio takes a straight path at low Vmax (regime I), a meandering path at high Vmax (regime II), and both paths at intermediate Vmax (regime III: multiple equilibrium state). However, the range of regime III shifts to higher Vmax by 0.10?0.30 m s?1. Stratification causes and maintains the offshore shift of the current path south of Kyushu through the conservation of potential vorticity. As a result, a small meander stagnates southeast of Kyushu, not developing into a large meander even for higher Vmax since the vorticity supply from the coast is reduced. For the same reason, higher Vmax is needed to maintain a meandering path. Bottom topographic features such as a continental slope and ridge significantly change the path selection. A straight path appears for the whole experimental range of Vmax and a meandering path only exists at intermediate Vmax. The continental slope along the southern coast of Japan captures the main flow to permit a straight path for all Vmax. Further, the Izu Ridge inhibits a meandering path hanging over the western flank of the ridge and narrows the range of Vmax in which the meandering state exists. The transition induced by monotonic changes of Vmax is significantly affected for a jump from a straight to a meandering path but not affected as much for a reverse jump. In a flat-bottom ocean, the enlargement of a small meander due to baroclinicity causes a quick transition from a straight to a meandering path with a large velocity change while the transition is impeded for a small velocity change. No transition occurs by a monotonic increase in Vmax with bottom topography since a straight path can exist for all Vmax.
    publisherAmerican Meteorological Society
    titleEffects of Stratification and Bottom Topography on the Kuroshio Path Variation South of Japan. Part I: Dependence of the Path Selection on Velocity
    typeJournal Paper
    journal volume29
    journal issue9
    journal titleJournal of Physical Oceanography
    identifier doi10.1175/1520-0485(1999)029<2419:EOSABT>2.0.CO;2
    journal fristpage2419
    journal lastpage2431
    treeJournal of Physical Oceanography:;1999:;Volume( 029 ):;issue: 009
    contenttypeFulltext
    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
    yabeshDSpacePersian
     
    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
    yabeshDSpacePersian