Aeration of the Ocean due to Plunging Breaking Waves

Chanson, Hubert and Cummings, Peter D. (1992) Aeration of the Ocean due to Plunging Breaking Waves. CE142, Department of Civil Engineering, The University of Queensland.

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Author Chanson, Hubert
Cummings, Peter D.
Title Aeration of the Ocean due to Plunging Breaking Waves
School, Department or Centre Department of Civil Engineering
Institution The University of Queensland
Report Number CE142
Publication date 1992-11-01
Subject 291205 Ocean Engineering
260502 Surfacewater Hydrology
291100 Environmental Engineering
290000 Engineering and Technology
260403 Physical Oceanography
260000 Earth Sciences
291200 Maritime Engineering
260500 Hydrology
290802 Water and Sanitary Engineering
291199 Environmental Engineering not elsewhere classified
290800 Civil Engineering
260400 Oceanography
Abstract/Summary The aeration of the ocean is an important factor contributing to the transfer of oxygen, nitrogen and carbon di-oxide between the ocean and the atmosphere. Breaking waves are known to enhance the aeration process by increasing the turbulent mixing and entraining air bubbles. One type of breaking waves, the deep sea plunging breaker, can entrain large quantities of air bubbles at depth as large as 10 to 20 metres. The resulting increase of air-water interface area and the increase of gas saturation distribution with the pressure induce a massive augmentation of air-water transfer of atmospheric gases. An attempt to estimate the characteristics of plunging breaking waves is developed using a similarity with plunging jets. The results are consistent with experimental observations and emphasise the role of deep sea plunging breakers in the aeration process. Further they provide a method to estimate the gas transfer rate due to plunging breaking waves.
Keyword plunging breaking waves
air-water mass transfer
plunging jets
air bubble entrainment
bubble breakup
air-water interface area
oxygenation
Additional Notes CHANSON, H., and CUMMINGS, P.D. (1992). "Aeration of the Ocean due to Plunging Breaking Waves." Research Report No. CE142, Dept. of Civil Engineering, University of Queensland, Australia, Nov., 42 pages (ISBN 0 86776 502 X).

Document type: Department Technical Report
Collection: School of Civil Engineering Publications
 
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Created: Tue, 25 Oct 2005, 10:00:00 EST by Hubert Chanson