Bubbles Outside the Plume During the LUMINY Wind-Wave Experiment
bookPart
Since many bubble-mediated processes are size dependent, it is often necessary to characterize the bubble distribution over the full size spectrum. For example, in regards to bubble-mediated gas transfer, small bubbles are important for insoluble gases like helium, while large bubbles are important for soluble gases, like dimethyl sulfide. In order to measure bubbles over the full size spectra, two complementary Bubble Measuring Systems (BMS) were deployed in the LUMINY wind-wave experiment. The TNO Mini-BMS measured smaller bubbles over the radius (r) range 15 < r < 500 um and had a well defined measurement volume. The NUIG Large-BMS measured bubbles over the range 200 < r < 5000 um and was designed to examine bubbles in bubble plumes without affecting the plume motions. The Large-BMS provided time resolved distributions, appropriate for the highly transient bubble plumes where large (r > 500 pm) bubbles are located. The Mini-BMS time averaged the bubble distributions, which is appropriate for the largely background bubble populations. The two systems were intercompared during a series of bubble frit experiments, and produced good agreement. The distribution was observed to have a power law dependency S in agreement with most other observations and Senescence observations by the Large-BMS. Characteristics of the bubble concentrations are discussed in terms of wind speed, fetch and additional paddle waves.
TNO Identifier
95438
Publisher
American Geophysical Union
Source title
Gas transfer at water surfaces
Editor(s)
Donelan, M.A.
Drennan, W.M.
Saltzman, E.S.
Wanninkhof, R.
Drennan, W.M.
Saltzman, E.S.
Wanninkhof, R.
Place of publication
Washington, DC
Pages
295-301
Files
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