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bubble curtain : ウィキペディア英語版
bubble curtain

A bubble curtain is a system that produces bubbles in a deliberate arrangement in water. The technique is based on bubbles of air (gas) being let out under the water surface, commonly on the bottom. When the bubbles rise they act as a barrier, a curtain, breaking the propagation of waves or the spreading of particles and other contaminants.
==Uses==
It can be used for the following purposes:
* to reduce propagation of shock waves (e.g. acoustic waves from engines or pile driving,〔http://findarticles.com/p/articles/mi_qn4184/is_20040603/ai_n10046852〕 explosions etcetera),
* to reduce liquid or debris floating on the surface from spreading 〔http://www.hydrotechnik-luebeck.de/html/pneumatic_bubble_barriers.php〕〔http://www.coastguard.se/ra/volume2/chapter5/52.htm〕
* to control the movements of fish〔http://yosemite.epa.gov/R10/CLEANUP.NSF/ph/gasco+photo+gallery!OpenDocument&ExpandSection=1〕
* for decoration and airing in aquariums〔http://www.petdiscounters.com/Bubble-Wand-Air-Diffusers-p1428.html〕
In June 2010, Okaloosa County, Florida used air bubble curtains to help protect their Destin Pass coastline from oil produced in the Gulf of Mexico by the Deepwater Horizon oil spill. They hoped to push oil up to the surface for booms and skimming boats to collect the oil. British oil company BP, who the U.S. government named as the responsible party for the oil spill, was billed for the cost of the project.〔http://www.wtsp.com/news/local/story.aspx?storyid=135045&catid=19〕

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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