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    Mesoscale eddy–internal wave coupling. Part II : energetics and results from PolyMode

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    2009jpo4039%2E1.pdf (1.038Mb)
    Date
    2010-04
    Author
    Polzin, Kurt L.  Concept link
    Metadata
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    Citable URI
    https://hdl.handle.net/1912/3955
    As published
    https://doi.org/10.1175/2009JPO4039.1
    DOI
    10.1175/2009JPO4039.1
    Keyword
     Eddies; Internal waves; Mesoscale processes 
    Abstract
    The issue of internal wave–mesoscale eddy interactions is revisited. Previous observational work identified the mesoscale eddy field as a possible source of internal wave energy. Characterization of the coupling as a viscous process provides a smaller horizontal transfer coefficient than previously obtained, with vh 50 m2 s−1 in contrast to νh 200–400 m2 s−1, and a vertical transfer coefficient bounded away from zero, with νυ + (f2/N2)Kh 2.5 ± 0.3 × 10−3 m2 s−1 in contrast to νυ + (f2/N2)Kh = 0 ± 2 × 10−2 m2 s−1. Current meter data from the Local Dynamics Experiment of the PolyMode field program indicate mesoscale eddy–internal wave coupling through horizontal interactions (i) is a significant sink of eddy energy and (ii) plays an O(1) role in the energy budget of the internal wave field.
    Description
    Author Posting. © American Meteorological Society, 2010. This article is posted here by permission of American Meteorological Society for personal use, not for redistribution. The definitive version was published in Journal of Physical Oceanography 40 (2010): 789-801, doi:10.1175/2009JPO4039.1.
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    • Physical Oceanography (PO)
    Suggested Citation
    Journal of Physical Oceanography 40 (2010): 789-801
     

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