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    Thermohaline convection at density ratios below one : a new regime for salt fingers

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    JMR-s15.pdf (1.702Mb)
    Date
    2011-07-01
    Author
    Schmitt, Raymond W.  Concept link
    Metadata
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    Citable URI
    https://hdl.handle.net/1912/5144
    As published
    https://doi.org/10.1357/002224011799849471
    DOI
    10.1357/002224011799849471
    Abstract
    New experimental results on haline convection show a surprising preference for narrow fingers over large-scale convection when even a small stabilizing temperature gradient is present (Hage and Tilgner, 2010). This regime has heat/salt density ratios below one, a parameter range that has not been explored in traditional salt finger theory. Here the properties of the exact (long finger) solutions of Schmitt (1979, 1983) are explored at low density ratios. It is found that narrow finger solutions are indeed obtained and remain the fastest growing in some circumstances, though the selective advantage of the “Stern scale“ can disappear as the density ratio decreases. The variation of solutions with Prandtl number and the relation to the Stern (1975) approximate solution are examined and discussed.
    Description
    Author Posting. © Sears Foundation for Marine Research, 2011. This article is posted here by permission of Sears Foundation for Marine Research for personal use, not for redistribution. The definitive version was published in Journal of Marine Research 69 (2011): 779-795, doi:10.1357/002224011799849471.
    Collections
    • Physical Oceanography (PO)
    Suggested Citation
    Journal of Marine Research 69 (2011): 779-795
     
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