The Impact of Offshore Wind Turbines on Underwater Ambient Noise Levels

dc.contributorVirginia Tech. Aerospace and Ocean Engineering Departmenten
dc.contributorFlorida Atlantic Universityen
dc.contributor.authorGlegg, Stewarten
dc.description.abstractThe underwater sound levels generated by offshore wind turbine farms is a concern because of the possible environmental impact on marine mammals. This paper will consider how sound generated by a wind turbine is transmitted into a shallow water channel. It is shown that the underwater sound levels can be calculated for a typical offshore wind turbine by using the theory of Chapman and Ward (1990) combined with aeroacoustic models of trailing edge noise on the wind turbine blades. A procedure is given for estimating the underwater sound levels from a wind turbine whose airborne noise levels are known. The results indicate that the sound levels are strongly modulated at the blade passing frequency, which leads to infrasound that is more easily detected than a continuous sound source of the same level.en
dc.description.notesSession Presentation - Plenary and Keynoteen
dc.format.extent34 pagesen
dc.identifier.citationGlegg, S. (2015, June). The impact of offshore wind turbines on underwater ambient noise levels. Paper presented at the North American Wind Energy Academy 2015 Symposium, Blacksburg, VA.en
dc.publisherVirginia Techen
dc.relation.ispartofNorth American Wind Energy Academy 2015 Symposiumen
dc.rightsIn Copyrighten
dc.rights.holderGlegg, Stewarten
dc.titleThe Impact of Offshore Wind Turbines on Underwater Ambient Noise Levelsen


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