Turbulence and wave breaking effects on air-water gas exchange

We present an experimental characterization of the effects of turbulence and breaking gravity waves on air-water gas exchange in standing waves. We identify two regimes that govern aeration rates: turbulent transport when no wave breaking occurs and bubble dominated transport when wave breaking occu...

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Bibliographic Details
Published in:Physical review letters 2000-08, Vol.85 (9), p.2030-2033
Main Authors: Boettcher, EJ, Fineberg, J, Lathrop, DP
Format: Article
Language:English
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Summary:We present an experimental characterization of the effects of turbulence and breaking gravity waves on air-water gas exchange in standing waves. We identify two regimes that govern aeration rates: turbulent transport when no wave breaking occurs and bubble dominated transport when wave breaking occurs. In both regimes, we correlate the qualitative changes in the aeration rate with corresponding changes in the wave dynamics. In the latter regime, the strongly enhanced aeration rate is correlated with measured acoustic emissions, indicating that bubble creation and dynamics dominate air-water exchange.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.85.2030