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    Laboratory studies of stratified convection with multiple states

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    05Wh26BdlyOM.pdf (786.5Kb)
    Date
    2005-01-14
    Author
    Whitehead, John A.  Concept link
    Bradley, Keith F.  Concept link
    Metadata
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    Citable URI
    https://hdl.handle.net/1912/257
    As published
    https://doi.org/10.1016/j.ocemod.2005.01.002
    Keyword
     Mixing; Ocean convection; Salt balance; Water circulation; Ocean circulation; Water masses 
    Abstract
    A simplified box model of the cooling of a salt-stratified ocean has been constructed in the laboratory to test a theory that predicts multiple equilibria if certain conditions exist. An isothermal basin of water had a thin layer of fresh water over salt water. Beside this was a smaller basin connected to the large basin by horizontal tubes at the top, middle and bottom. The small basin was cooled from above. If the top tube has more flow resistance than the bottom tubes, theory indicates that as cooling temperature T* is made colder, there is a sudden transition between two flow states. The velocities in the tubes jump to greater values, while salinity and temperature in the small basin jump to another value. These multiple states are found in the laboratory experiments along with some states that oscillate. Laboratory measurements and layered model calculations for hysteresis and the jump of temperature and salinity agree qualitatively, but there is only rough quantitative agreement.
    Description
    Author Posting. © The Authors, 2005. This is the author's version of the work. It is posted here by permission of Elsevier Ltd for personal use, not for redistribution. The definitive version was published in Ocean Modelling 11 (2006): 333-346, doi:10.1016/j.ocemod.2005.01.002.
    Collections
    • Physical Oceanography (PO)
    Suggested Citation
    Preprint: Whitehead, John A., Bradley, Keith F., "Laboratory studies of stratified convection with multiple states", 2005-01-14, https://doi.org/10.1016/j.ocemod.2005.01.002, https://hdl.handle.net/1912/257
     

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