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    A laboratory model of a cooled continental shelf

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    WHOI-93-22.pdf (1.521Mb)
    Date
    1993-06
    Author
    Whitehead, John A.  Concept link
    Frazel, Robert E.  Concept link
    Metadata
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    Citable URI
    https://hdl.handle.net/1912/626
    DOI
    10.1575/1912/626
    Keyword
     Cooled shelf; Continental shelf; Laboratory model; Convection 
    Abstract
    A laboratory model of wintertme cooling over a continental shelf has a water surface cooled by air in an annular rotating tank. A flat shallow outer "continental shelf" region is next to a conical "contiental slope" bottom and a flat "deep ocean" center. The shelf flow consists of cellular convection cells descending into a region with very complicated baroclinic eddies. Extremely pronounced fronts are found at the shelf break and over the slope. Associated with these are sizable geostrophic currents along the shelf and over shelf break contour. Eddies are particularly energetic there. Cooling rate is compared with temperature difference between "continental shelf" and "deep ocean". Scaling considerations produce an empirical best fit formula for temperature difference as a function of cooling rate. This produces a relatively straight regression line over a wide range of rotation rates, shelf depths and cooling rates. If this formula is valid for the ocean, water over continental shelves will be much colder due to constraints imposed by rotation of the earth than if the fluid were not rotating.
    Collections
    • Physical Oceanography (PO)
    • WHOI Technical Reports
    Suggested Citation
    Whitehead, J. A., & Frazel, R. E. (1993). A laboratory model of a cooled continental shelf. Woods Hole Oceanographic Institution. https://doi.org/10.1575/1912/626
     

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