Underwater radiated noise from direct driven Wave Energy Converters: Sound Pressure Levels in relation to Significant Wave Height and Wave Steepness
2014 (English)In: Journal of the Acoustical Society of America, ISSN 0001-4966, E-ISSN 1520-8524Article in journal (Refereed) Submitted
The operation of Wave Energy Converters (WECs) will add to the anthropogenic impact on the marine environment. Underwater radiated noise is one suggested impact. To estimate if there might be an impact on the environment, the noise must be characterized. Noise from two full scale WECs was measured in 2013. The purpose of this study was to examine the change in noise levels from the WECs in different significant wave heights and wave Steepness, propagation loss and the significance of a noise dampening feature. Noise was measured simultaneously at two distances (1m and 150 m). Noise levels at 1m varied between 108-143 dB re 1 µParms in Hs 0.09-2.84m. The noise dampening feature had a significant impact on the noise levels. Noise levels increased logarithmically in relation to Hs and linearly in relation to α2. α2 was found to be an uncertain variable when used alone to estimate noise levels.
Place, publisher, year, edition, pages
Engineering and Technology Natural Sciences
IdentifiersURN: urn:nbn:se:uu:diva-234961OAI: oai:DiVA.org:uu-234961DiVA: diva2:758501