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    A Simple Model of Abyssal Circulation, Including Effects of Wind, Buoyancy and Topography

    Source: Journal of Physical Oceanography:;1989:;Volume( 019 ):;issue: 005::page 596
    Author:
    Hautala, Susan L.
    ,
    Riser, Stephen C.
    DOI: 10.1175/1520-0485(1989)019<0596:ASMOAC>2.0.CO;2
    Publisher: American Meteorological Society
    Abstract: We examine problems of steady abyssal circulation using an inviscid planetary geostrophic layered model. The model includes an active wind-driven upper layer and arbitrary topography; forcing is in the form of specified interlayer mass fluxes from which we model global upwelling and geothermal heating. The results considered in this study are appropriate to the shadow zone of a Pacific-sized, moderately wind-forced oceanic basin. It is found that topographic effects, global upwelling and geothermal heating may all control the abyssal circulation, at least locally, within realistic values of their parameter ranges, suggesting that a better understanding of the geothermal and interior buoyancy flux fields is necessary for an understanding of abyssal circulation in the ocean. The model reduces to a nonlinear extension of the one-layer abyssal circulation model of Stommel and Arons, generalized to include mass flux structure and topography, and this limit is shown to be valid in an oceanic shadow zone for moderate topography and weak to moderate buoyancy forcing.
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      A Simple Model of Abyssal Circulation, Including Effects of Wind, Buoyancy and Topography

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4164506
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    contributor authorHautala, Susan L.
    contributor authorRiser, Stephen C.
    date accessioned2017-06-09T14:49:12Z
    date available2017-06-09T14:49:12Z
    date copyright1989/05/01
    date issued1989
    identifier issn0022-3670
    identifier otherams-27495.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4164506
    description abstractWe examine problems of steady abyssal circulation using an inviscid planetary geostrophic layered model. The model includes an active wind-driven upper layer and arbitrary topography; forcing is in the form of specified interlayer mass fluxes from which we model global upwelling and geothermal heating. The results considered in this study are appropriate to the shadow zone of a Pacific-sized, moderately wind-forced oceanic basin. It is found that topographic effects, global upwelling and geothermal heating may all control the abyssal circulation, at least locally, within realistic values of their parameter ranges, suggesting that a better understanding of the geothermal and interior buoyancy flux fields is necessary for an understanding of abyssal circulation in the ocean. The model reduces to a nonlinear extension of the one-layer abyssal circulation model of Stommel and Arons, generalized to include mass flux structure and topography, and this limit is shown to be valid in an oceanic shadow zone for moderate topography and weak to moderate buoyancy forcing.
    publisherAmerican Meteorological Society
    titleA Simple Model of Abyssal Circulation, Including Effects of Wind, Buoyancy and Topography
    typeJournal Paper
    journal volume19
    journal issue5
    journal titleJournal of Physical Oceanography
    identifier doi10.1175/1520-0485(1989)019<0596:ASMOAC>2.0.CO;2
    journal fristpage596
    journal lastpage611
    treeJournal of Physical Oceanography:;1989:;Volume( 019 ):;issue: 005
    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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