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|Title: ||Measurement and characterisation of radiated underwater sound from a 3.6 MW monopile wind turbine|
|Authors: ||Pangerc, Tanja|
Theobald, Pete D.
Robinson, Stephen P.
Lepper, Paul A.
|Keywords: ||Sound pressure|
Acoustic noise measurement
|Issue Date: ||2016|
|Publisher: ||© Acoustical Society of America|
|Citation: ||PANGERC, T. ... et al, 2016. Measurement and characterisation of radiated underwater sound from a 3.6 MW monopile wind turbine. Journal of the Acoustical Society of America, 140 (4), pp. 2913-2922.|
|Abstract: ||This paper describes underwater sound pressure measurements obtained in close proximity (50 m) to two individual wind turbines, over a 21-day period, capturing the full range of turbine operating conditions. The sound radiated into the water was characterised by a number of tonal
components, which are thought to primarily originate from the gearbox for the bandwidth measured. The main signal associated with the turbine operation had a mean-square sound pressure spectral density level which peaked at 126 dB re 1 lPa2 Hz 1 at 162 Hz. Other tonal components were also present, notably at frequencies between about 20 and 330 Hz, albeit at lower amplitudes. The measured sound characteristics, both in terms of frequency and amplitude, were shown to vary with wind speed. The sound pressure level increased with wind speed up to an average value of 128 dB re 1 lPa at a wind speed of about 10 ms 1, and then showed a general decrease. Overall, differences in the mean-square sound pressure spectral density level of over 20 dB were observed
across the operational envelope of the turbine.|
|Description: ||This article may be downloaded for personal use only. Any other use requires prior permission of the author and the Acoustical Society of America. This article appeared in PANGERC, T. ... et al, 2016. Measurement and characterisation of radiated underwater sound from a 3.6 MW monopile wind turbine. The Journal of the Acoustical Society of America, 140 (4), pp. 2913-2922 and may be found at http://dx.doi.org/10.1121/1.4964824|
|Sponsor: ||Department for Business, Energy and Industrial Strategy (BEIS) through the
National Measurement System Programme for Acoustics and Ionising Radiation Metrology.|
|Publisher Link: ||http://dx.doi.org/10.1121/1.4964824|
|Appears in Collections:||Published Articles (Mechanical, Electrical and Manufacturing Engineering)|
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