Laboratory observations of double-diffusive convection using high-frequency broadband acoustics


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dc.contributor.author Ross, Tetjana
dc.contributor.author Lavery, Andone C.
dc.date.accessioned 2010-02-23T19:35:44Z
dc.date.available 2010-02-23T19:35:44Z
dc.date.issued 2008-09
dc.identifier.uri http://hdl.handle.net/1912/3176
dc.description Author Posting. © The Author(s), 2008. This is the author's version of the work. It is posted here by permission of Springer for personal use, not for redistribution. The definitive version was published in Experiments in Fluids 46 (2009): 355-364, doi:10.1007/s00348-008-0570-9. en_US
dc.description.abstract High-frequency broadband (200-300 kHz) acoustic scattering techniques have been used to observe the diffusive regime of double-diffusive convection in the laboratory. Pulse compression signal processing techniques allow 1) centimetre-scale interface thickness to be rapidly, remotely, and continuously measured, 2) the evolution, and ultimate merging, of multiple interfaces to be observed at high-resolution, and 3) convection cells within the surrounding mixed layers to be observed. The acoustically measured interface thickness, combined with knowledge of the slowly-varying temperatures within the surrounding layers, in turn allows the direct estimation of double-diffusive heat and buoyancy fluxes. The acoustically derived interface thickness, interfacial fluxes and migration rates are shown to support established theory. Acoustic techniques complement traditional laboratory sampling methods and provide enhanced capabilities for observing the diffusive regime of double-diffusion in the ocean. en_US
dc.description.sponsorship Funding for this project was provided by the Ocean Acoustics program at the Office of Naval Research, and by the WHOI Cecil and Ida Greene Technology Award. en_US
dc.format.mimetype application/pdf
dc.language.iso en_US en_US
dc.relation.uri http://dx.doi.org/10.1007/s00348-008-0570-9
dc.subject Double-diffusion en_US
dc.subject Broadband acoustics en_US
dc.subject Convection en_US
dc.title Laboratory observations of double-diffusive convection using high-frequency broadband acoustics en_US
dc.type Preprint en_US

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