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

    The Lifecycle of Semidiurnal Internal Tides over the Northern Mid-Atlantic Ridge

    Source: Journal of Physical Oceanography:;2017:;volume 048:;issue 001::page 61
    Author:
    Vic, Clément
    ,
    Naveira Garabato, Alberto C.
    ,
    Green, J. A. Mattias
    ,
    Spingys, Carl
    ,
    Forryan, Alexander
    ,
    Zhao, Zhongxiang
    ,
    Sharples, Jonathan
    DOI: 10.1175/JPO-D-17-0121.1
    Publisher: American Meteorological Society
    Abstract: AbstractThe life cycle of semidiurnal internal tides over the Mid-Atlantic Ridge (MAR) sector south of the Azores is investigated using in situ, a high-resolution mooring and microstructure profiler, and satellite data, in combination with a theoretical model of barotropic-to-baroclinic tidal energy conversion. The mooring analysis reveals that the internal tide horizontal energy flux is dominated by mode 1 and that energy density is more distributed among modes 1?10. Most modes are compatible with an interpretation in terms of standing internal tides, suggesting that they result from interactions between waves generated over the MAR. Internal tide energy is thus concentrated above the ridge and is eventually available for local diapycnal mixing, as endorsed by the elevated rates of turbulent energy dissipation ε estimated from microstructure measurements. A spring?neap modulation of energy density on the MAR is found to originate from the remote generation and radiation of strong mode-1 internal tides from the Atlantis-Meteor Seamount Complex. Similar fortnightly variability of a factor of 2 is observed in ε, but this signal?s origin cannot be determined unambiguously. A regional tidal energy budget highlights the significance of high-mode generation, with 81% of the energy lost by the barotropic tide being converted into modes >1 and only 9% into mode 1. This has important implications for the fraction (q) of local dissipation to the total energy conversion, which is regionally estimated to be ~0.5. This result is in stark contrast with the Hawaiian Ridge system, where the radiation of mode-1 internal tides accounts for 30% of the regional energy conversion, and q < 0.25.
    • Download: (8.116Mb)
    • Show Full MetaData Hide Full MetaData
    • Item Order
    • Go To Publisher
    • Price: 5000 Rial
    • Statistics

      The Lifecycle of Semidiurnal Internal Tides over the Northern Mid-Atlantic Ridge

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/4260874
    Collections
    • Journal of Physical Oceanography

    Show full item record

    contributor authorVic, Clément
    contributor authorNaveira Garabato, Alberto C.
    contributor authorGreen, J. A. Mattias
    contributor authorSpingys, Carl
    contributor authorForryan, Alexander
    contributor authorZhao, Zhongxiang
    contributor authorSharples, Jonathan
    date accessioned2019-09-19T10:02:27Z
    date available2019-09-19T10:02:27Z
    date copyright11/14/2017 12:00:00 AM
    date issued2017
    identifier otherjpo-d-17-0121.1.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4260874
    description abstractAbstractThe life cycle of semidiurnal internal tides over the Mid-Atlantic Ridge (MAR) sector south of the Azores is investigated using in situ, a high-resolution mooring and microstructure profiler, and satellite data, in combination with a theoretical model of barotropic-to-baroclinic tidal energy conversion. The mooring analysis reveals that the internal tide horizontal energy flux is dominated by mode 1 and that energy density is more distributed among modes 1?10. Most modes are compatible with an interpretation in terms of standing internal tides, suggesting that they result from interactions between waves generated over the MAR. Internal tide energy is thus concentrated above the ridge and is eventually available for local diapycnal mixing, as endorsed by the elevated rates of turbulent energy dissipation ε estimated from microstructure measurements. A spring?neap modulation of energy density on the MAR is found to originate from the remote generation and radiation of strong mode-1 internal tides from the Atlantis-Meteor Seamount Complex. Similar fortnightly variability of a factor of 2 is observed in ε, but this signal?s origin cannot be determined unambiguously. A regional tidal energy budget highlights the significance of high-mode generation, with 81% of the energy lost by the barotropic tide being converted into modes >1 and only 9% into mode 1. This has important implications for the fraction (q) of local dissipation to the total energy conversion, which is regionally estimated to be ~0.5. This result is in stark contrast with the Hawaiian Ridge system, where the radiation of mode-1 internal tides accounts for 30% of the regional energy conversion, and q < 0.25.
    publisherAmerican Meteorological Society
    titleThe Lifecycle of Semidiurnal Internal Tides over the Northern Mid-Atlantic Ridge
    typeJournal Paper
    journal volume48
    journal issue1
    journal titleJournal of Physical Oceanography
    identifier doi10.1175/JPO-D-17-0121.1
    journal fristpage61
    journal lastpage80
    treeJournal of Physical Oceanography:;2017:;volume 048:;issue 001
    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