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    Interactions between Near-Inertial Mixed Layer Currents and the Mesoscale: The Importance of Spatial Variabilities in the Vorticity Field

    Source: Journal of Physical Oceanography:;1998:;Volume( 028 ):;issue: 007::page 1363
    Author:
    van Meurs, P.
    DOI: 10.1175/1520-0485(1998)028<1363:IBNIML>2.0.CO;2
    Publisher: American Meteorological Society
    Abstract: Satellite-tracked mixed-layer drifter data from the 1987 Ocean Storms Experiment in the northeast Pacific are used to study the temporal and spatial variability in the near-inertial currents of the surface mixed layer. The data suggest that the near-inertial currents interact with the mesoscale vorticity. To explore the exact nature of this relationship, an asymptotic analysis is extended to include the mesoscale and it is shown that not only gradients in the planetary vorticity (?) but also the gradients in the mesoscale vorticity affect the generation and evolution of near-inertial mixed layer currents. While the ? effect is relevant for the large-scale evolution of the near-inertial currents, the vorticity gradients of the mesoscale field determine the local behavior of near-inertial currents. Using a three-dimensional model it is shown that areas of large gradients in the mesoscale vorticity coincide with areas of low near-inertial energy. The smaller spatial scales in the near-inertial energy, generated by the vorticity field, result in faster decay of near-inertial currents. The findings that the near-inertial currents interact with the mesoscale are in apparent contradiction with previous research in the same area.
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      Interactions between Near-Inertial Mixed Layer Currents and the Mesoscale: The Importance of Spatial Variabilities in the Vorticity Field

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    contributor authorvan Meurs, P.
    date accessioned2017-06-09T14:53:04Z
    date available2017-06-09T14:53:04Z
    date copyright1998/07/01
    date issued1998
    identifier issn0022-3670
    identifier otherams-28896.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4166062
    description abstractSatellite-tracked mixed-layer drifter data from the 1987 Ocean Storms Experiment in the northeast Pacific are used to study the temporal and spatial variability in the near-inertial currents of the surface mixed layer. The data suggest that the near-inertial currents interact with the mesoscale vorticity. To explore the exact nature of this relationship, an asymptotic analysis is extended to include the mesoscale and it is shown that not only gradients in the planetary vorticity (?) but also the gradients in the mesoscale vorticity affect the generation and evolution of near-inertial mixed layer currents. While the ? effect is relevant for the large-scale evolution of the near-inertial currents, the vorticity gradients of the mesoscale field determine the local behavior of near-inertial currents. Using a three-dimensional model it is shown that areas of large gradients in the mesoscale vorticity coincide with areas of low near-inertial energy. The smaller spatial scales in the near-inertial energy, generated by the vorticity field, result in faster decay of near-inertial currents. The findings that the near-inertial currents interact with the mesoscale are in apparent contradiction with previous research in the same area.
    publisherAmerican Meteorological Society
    titleInteractions between Near-Inertial Mixed Layer Currents and the Mesoscale: The Importance of Spatial Variabilities in the Vorticity Field
    typeJournal Paper
    journal volume28
    journal issue7
    journal titleJournal of Physical Oceanography
    identifier doi10.1175/1520-0485(1998)028<1363:IBNIML>2.0.CO;2
    journal fristpage1363
    journal lastpage1388
    treeJournal of Physical Oceanography:;1998:;Volume( 028 ):;issue: 007
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
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