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The residence time of air bubbles <400 μm diameter at the surface of distilled water and seawater
Article first published online: 18 JAN 2010
1984 Blackwell Munksgaard
Volume 36B, Issue 4, pages 294–299, September 1984
How to Cite
STRUTHWOLF, M. and BLANCHARD, D. C. (1984), The residence time of air bubbles <400 μm diameter at the surface of distilled water and seawater. Tellus B, 36B: 294–299. doi: 10.1111/j.1600-0889.1984.tb00249.x
- Issue published online: 18 JAN 2010
- Article first published online: 18 JAN 2010
- Manuscript received January 20; in final form March 26, 1984
Air bubbles from 50 to 400 μm diameter were produced from a fine capillary tip inserted through the top of a rotating tank of water. Bubble persistence on the surface was measured from the tank geometry and rotation rate, the minimum detectable time being 10−2 s. In distilled water, nearly all bubbles >200 μm diameter persisted <0.05 s, but smaller bubbles existed for several seconds or more. Opposite results were found in seawater. Bubbles less than about 80 μm diameter existed ≤10−2 s. For larger bubbles, the residence time increased with size, reaching about 0.3 s for bubble diameters of 300 μm. These results, plus other experiments, suggest that bubble collisions in seawater will produce coalescence if one of the bubbles is less than about 80 μm diameter.