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    A Numerical Model of Coastal Upwelling

    Source: Journal of Physical Oceanography:;1972:;Volume( 002 ):;issue: 001::page 14
    Author:
    O'Brien, James J.
    ,
    Hurlburt, H. E.
    DOI: 10.1175/1520-0485(1972)002<0014:ANMOCU>2.0.CO;2
    Publisher: American Meteorological Society
    Abstract: A wind-driven model of coastal upwelling induced into a stratified, rotating ocean is solved numerically. The circulation is on an f plane and longshore variations are neglected. A multilevel model is derived, but only solutions for a two-layer model are discussed. A longshore baroclinic surface jet is discovered. The time-dependent geostrophic jet is dynamically explained by conservation of potential vorticity. The existence of the jet depends critically on stratification and non-zero wind stress at the coast. Coastal upwelling is confined to within 30 km of the shore. The model exhibits no deep countercurrent during active coastal upwelling. A time scale of the order of 10 days or longer is required for a pycnocline at 50 m depth to penetrate the surface. Solutions for a wide (>300 km) coastal shelf, an irregular shallow shelf, and a continental slope region are illustrated. A secondary upwelling region is found offshore at sharp breaks in the shelf topography. In all cases, the offshore flow is a simple Ekman drift and downwelling offshore is created by Ekman pumping caused by negative wind-stress curl.
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      A Numerical Model of Coastal Upwelling

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/4162051
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    • Journal of Physical Oceanography

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    contributor authorO'Brien, James J.
    contributor authorHurlburt, H. E.
    date accessioned2017-06-09T14:43:31Z
    date available2017-06-09T14:43:31Z
    date copyright1972/01/01
    date issued1972
    identifier issn0022-3670
    identifier otherams-25285.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4162051
    description abstractA wind-driven model of coastal upwelling induced into a stratified, rotating ocean is solved numerically. The circulation is on an f plane and longshore variations are neglected. A multilevel model is derived, but only solutions for a two-layer model are discussed. A longshore baroclinic surface jet is discovered. The time-dependent geostrophic jet is dynamically explained by conservation of potential vorticity. The existence of the jet depends critically on stratification and non-zero wind stress at the coast. Coastal upwelling is confined to within 30 km of the shore. The model exhibits no deep countercurrent during active coastal upwelling. A time scale of the order of 10 days or longer is required for a pycnocline at 50 m depth to penetrate the surface. Solutions for a wide (>300 km) coastal shelf, an irregular shallow shelf, and a continental slope region are illustrated. A secondary upwelling region is found offshore at sharp breaks in the shelf topography. In all cases, the offshore flow is a simple Ekman drift and downwelling offshore is created by Ekman pumping caused by negative wind-stress curl.
    publisherAmerican Meteorological Society
    titleA Numerical Model of Coastal Upwelling
    typeJournal Paper
    journal volume2
    journal issue1
    journal titleJournal of Physical Oceanography
    identifier doi10.1175/1520-0485(1972)002<0014:ANMOCU>2.0.CO;2
    journal fristpage14
    journal lastpage26
    treeJournal of Physical Oceanography:;1972:;Volume( 002 ):;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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