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    Mixing across the Arctic Ocean : microstructure observations during the Beringia 2005 Expedition

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    2008GL033532.pdf (462.2Kb)
    Date
    2008-04-30
    Author
    Rainville, Luc  Concept link
    Winsor, Peter  Concept link
    Metadata
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    Citable URI
    https://hdl.handle.net/1912/3360
    As published
    https://doi.org/10.1029/2008GL033532
    DOI
    10.1029/2008GL033532
    Keyword
     Turbulence; Arctic; Topography 
    Abstract
    Turbulent-scale temperature and conductivity were measured during the pan-arctic Beringia 2005 Expedition. The rates of dissipation of thermal variance and diapycnal diffusivities are calculated along a section from Alaska to the North Pole, across deep flat basins (Canada and Makarov Basins) and steep ridges (Alpha-Mendeleev and Lomonosov Ridges). The mixing rates are observed to be small relative to lower latitudes but also remarkably non-uniform. Relatively elevated turbulence is found over deep topography, confirming the dominant role of bottom-generated internal waves. Measured patterns of mixing in the Arctic are also associated with other mechanisms, such as double-diffusive structures and deep overflows. A better knowledge of the distribution of mixing is essential to understand the dynamics of the changing Arctic environment.
    Description
    Author Posting. © American Geophysical Union, 2008. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Geophysical Research Letters 35 (2008): L08606, doi:10.1029/2008GL033532.
    Collections
    • Physical Oceanography (PO)
    Suggested Citation
    Geophysical Research Letters 35 (2008): L08606
     

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