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

    Vertical Diffusion Driven by Internal Waves in a Sill Fjord

    Source: Journal of Physical Oceanography:;1976:;Volume( 006 ):;issue: 004::page 486
    Author:
    Stigebrandt, Anders
    DOI: 10.1175/1520-0485(1976)006<0486:VDDBIW>2.0.CO;2
    Publisher: American Meteorological Society
    Abstract: A new mechanism, the breaking of internal waves, is proposed to explain vertical mixing within the lower layers of sill fjords. The generation of the waves at the sill of a fjord is modelled assuming constant depth except at the narrow sill whose height is the thickness of the lower layer. A barotropic tide oscillating across the still creates internal waves which propagate both seaward and landward from the still. These waves break against the bottom, creating boundary turbulence which mixes water of different density in the lower layer. This is demonstrated experimentally. The mixture flows away from the boundaries into the interior of the fjord, causing an effective vertical mixing. The energy input into the internal waves and the damping of barotropic seiches are computed using linear theory. Possible instability, except at the bottom, is discounted by considering representative Richardson and Froude numbers. The theory is then qualitatively applied to the Oslofjord with particular attention given to the effects caused by changing the sill geometry. An estimate of the Richardson flux number from the Oslofjord data gives a value of 0.05.
    • Download: (1.072Mb)
    • Show Full MetaData Hide Full MetaData
    • Item Order
    • Go To Publisher
    • Price: 5000 Rial
    • Statistics

      Vertical Diffusion Driven by Internal Waves in a Sill Fjord

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/4162417
    Collections
    • Journal of Physical Oceanography

    Show full item record

    contributor authorStigebrandt, Anders
    date accessioned2017-06-09T14:44:18Z
    date available2017-06-09T14:44:18Z
    date copyright1976/07/01
    date issued1976
    identifier issn0022-3670
    identifier otherams-25614.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4162417
    description abstractA new mechanism, the breaking of internal waves, is proposed to explain vertical mixing within the lower layers of sill fjords. The generation of the waves at the sill of a fjord is modelled assuming constant depth except at the narrow sill whose height is the thickness of the lower layer. A barotropic tide oscillating across the still creates internal waves which propagate both seaward and landward from the still. These waves break against the bottom, creating boundary turbulence which mixes water of different density in the lower layer. This is demonstrated experimentally. The mixture flows away from the boundaries into the interior of the fjord, causing an effective vertical mixing. The energy input into the internal waves and the damping of barotropic seiches are computed using linear theory. Possible instability, except at the bottom, is discounted by considering representative Richardson and Froude numbers. The theory is then qualitatively applied to the Oslofjord with particular attention given to the effects caused by changing the sill geometry. An estimate of the Richardson flux number from the Oslofjord data gives a value of 0.05.
    publisherAmerican Meteorological Society
    titleVertical Diffusion Driven by Internal Waves in a Sill Fjord
    typeJournal Paper
    journal volume6
    journal issue4
    journal titleJournal of Physical Oceanography
    identifier doi10.1175/1520-0485(1976)006<0486:VDDBIW>2.0.CO;2
    journal fristpage486
    journal lastpage495
    treeJournal of Physical Oceanography:;1976:;Volume( 006 ):;issue: 004
    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