Measurements and analysis of underwater noise from operation of offshore wind farms

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Journal of Vibration and Shock ›› 2016, Vol. 35 ›› Issue (12) : 215-220.

Niu Fuqiang1,2, Yang Yanming1, Xu Xiaomei2, Zhou Zaiming1,Huang Yuekun1

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Abstract

Underwater noise from operation of offshore wind farms has impacted on the marine environment. Underwater noise was recorded from one 3.0MW and one 5.0 MW wind turbine in shang hai during normal operation phase in this paper. At last, a normal mode propagation model was designed to predict noise distribution of wind turbines. The results of data processing show noise during operation are much lower intensity, and generally dominated by a series of pure tones below 800 Hz. The dominating frequencies become obvious at high wind speed. The sound intensity increase with wind speed, but have not significant difference with the power of wind turbines. In addition, the frequency content of noise seem to change with power of wind turbines, wind speed and foundation type. The zones of noise impact on marine environment are small during operation of wind farms. The results of paper can provide technical reference for environmental impact assessment of offshore wind farms and have great value in engineering application.

Key words

off-shore wind farm / underwater noise / noise measurement / operation phase

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Niu Fuqiang1,2, Yang Yanming1, Xu Xiaomei2, Zhou Zaiming1,Huang Yuekun1. Measurements and analysis of underwater noise from operation of offshore wind farms[J]. Journal of Vibration and Shock, 2016, 35(12): 215-220

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