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首页> 外文期刊>International Journal on Hydropower & Dams >Reducing sound to keep fish healthy
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Reducing sound to keep fish healthy

机译：降低声音以保持鱼类健康

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Studies on the effects of installing underwater piles to support windmills or marine turbines have revealed that the noise has an adverse effect on fish and other marine mammals, and ways to mitigate the problems are now being developed. Research in the USA has indicated that if an individual blow to a pile rises above a particular sound level, fish can be irreparably harmed and die. The finding has led scientists to recommend the first-ever sound threshold for pile driving, based on actual fish responses, instead of estimates. The noise emanating from driving a steel pile underwater with a large ham- mer can cause gases such as oxygen to come out of fish blood faster than normal, leading to a decompression sickness much like the bends that divers experience when they rise to the surface too fast. Pressure changes also affect a fish's swim bladder, an internal, air-filled sac that helps the fish maintain weightlessness at different water depths. Alternating pressure changes cause the swim bladder to expand and compress quickly, which punches and bruises neighbouring organs and can rupture the swim bladder itself.
机译：对安装水下桩以支撑风车或海上涡轮机的影响的研究表明，噪声对鱼类和其他海洋哺乳动物有不利影响，并且目前正在开发减轻问题的方法。美国的研究表明，如果对一堆的单个打击超过特定的声级，鱼类可能会受到不可弥补的伤害并死亡。这一发现促使科学家们根据鱼类的实际反应而不是估计值，推荐了有史以来第一个打桩声音阈值。用大锤子将钢桩打入水下产生的噪音会导致氧气等气体以比正常情况更快的速度从鱼血中排出，从而导致减压病的发生，就像潜水员在水面升起时所经历的弯道一样。快速。压力变化还会影响鱼的游泳囊，这是一个内部充气囊，可帮助鱼在不同水深下保持失重状态。交替的压力变化会导致游泳囊快速膨胀和压缩，从而刺伤附近的器官，并使其破裂。

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