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    Circulation in the Alboran Sea as Determined by Quasi-Synoptic Hydrographic Observations. Part I: Three-Dimensional Structure of the Two Anticyclonic Gyres

    Source: Journal of Physical Oceanography:;1996:;Volume( 026 ):;issue: 005::page 684
    Author:
    Viúdez, Álvaro
    ,
    Tintoré, Joaquín
    ,
    Haney, Robert L.
    DOI: 10.1175/1520-0485(1996)026<0684:CITASA>2.0.CO;2
    Publisher: American Meteorological Society
    Abstract: The circulation and dynamics of the Modified Atlantic Water have been studied using data from an intensive field experiment carried out between 22 September and 7 October 1992. Data included 134 CTD casts, ADCP, and satellite imagery. A well-defined wavelike front was observed with two significant anticyclonic gyres in the western and eastern Alboran Sea. Smaller-scale cyclonic eddies were also observed. The front separates the more saline, older modified Atlantic water (S>38) in the northern region from the fresher, more recent modified Atlantic water (S<36.8) in the south. The associated baroclinic jet had a mean transport of 1 Sv and maximum geostrophic velocities of 1.0 ms?1. The three-dimensional structure and spatial scales of both gyres were similar, that is, 90 km long and 220 m deep. In the eastern Alboran, northeast of Oran, the origin of the Algerian Current was also detected with an eastward transport of 1.8 Sv. The general picture can be presented as a structure formed by a wavelike front coupled with two large anticyclonic gyre-small cyclonic eddy systems. The relative importance of stratification, relative vorticity, and Froude number in the distribution of Extel?s potential vorticity has been examined, and potential vorticity conservation is used to infer vertical motion. The vertical velocity forcing has been computed using the quasigeostrophic Q vector formulation of the omega equation. It is found that the differential vorticity advection due to mesoscale phenomena in the western Alboran plays a main role in this forcing. The vertical velocities associated with these mesoscale structures reach maximum absolute values of 15 m day?1.
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      Circulation in the Alboran Sea as Determined by Quasi-Synoptic Hydrographic Observations. Part I: Three-Dimensional Structure of the Two Anticyclonic Gyres

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4165632
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    contributor authorViúdez, Álvaro
    contributor authorTintoré, Joaquín
    contributor authorHaney, Robert L.
    date accessioned2017-06-09T14:52:02Z
    date available2017-06-09T14:52:02Z
    date copyright1996/05/01
    date issued1996
    identifier issn0022-3670
    identifier otherams-28508.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4165632
    description abstractThe circulation and dynamics of the Modified Atlantic Water have been studied using data from an intensive field experiment carried out between 22 September and 7 October 1992. Data included 134 CTD casts, ADCP, and satellite imagery. A well-defined wavelike front was observed with two significant anticyclonic gyres in the western and eastern Alboran Sea. Smaller-scale cyclonic eddies were also observed. The front separates the more saline, older modified Atlantic water (S>38) in the northern region from the fresher, more recent modified Atlantic water (S<36.8) in the south. The associated baroclinic jet had a mean transport of 1 Sv and maximum geostrophic velocities of 1.0 ms?1. The three-dimensional structure and spatial scales of both gyres were similar, that is, 90 km long and 220 m deep. In the eastern Alboran, northeast of Oran, the origin of the Algerian Current was also detected with an eastward transport of 1.8 Sv. The general picture can be presented as a structure formed by a wavelike front coupled with two large anticyclonic gyre-small cyclonic eddy systems. The relative importance of stratification, relative vorticity, and Froude number in the distribution of Extel?s potential vorticity has been examined, and potential vorticity conservation is used to infer vertical motion. The vertical velocity forcing has been computed using the quasigeostrophic Q vector formulation of the omega equation. It is found that the differential vorticity advection due to mesoscale phenomena in the western Alboran plays a main role in this forcing. The vertical velocities associated with these mesoscale structures reach maximum absolute values of 15 m day?1.
    publisherAmerican Meteorological Society
    titleCirculation in the Alboran Sea as Determined by Quasi-Synoptic Hydrographic Observations. Part I: Three-Dimensional Structure of the Two Anticyclonic Gyres
    typeJournal Paper
    journal volume26
    journal issue5
    journal titleJournal of Physical Oceanography
    identifier doi10.1175/1520-0485(1996)026<0684:CITASA>2.0.CO;2
    journal fristpage684
    journal lastpage705
    treeJournal of Physical Oceanography:;1996:;Volume( 026 ):;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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