Modelling techniques for underwater noise generated by tidal turbines in shallow water


Lloyd, Thomas P., Turnock, Stephen R. and Humphrey, Victor F. (2011) Modelling techniques for underwater noise generated by tidal turbines in shallow water At Proceedings of the 30th International Conference on Ocean, Offshore and Arctic Engineering, Netherlands. 19 - 24 Jun 2011. 9 pp.

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Description/Abstract

The modelling of underwater noise sources and their potential impact on the marine environment is considered, focusing on tidal turbines in shallow water. The requirement for device noise prediction as part of environmental impact assessment is outlined and the limited amount of measurement data and modelling research identified. Following the identification of potential noise sources, the dominant flowgenerated sources are modelled using empirical techniques. The predicted sound pressure level due to inflow turbulence for a typical turbine is estimated to give third-octave-bandwidth pressure levels of 119 dB re 1 ?Pa at 20 metres from the turbine at individual frequencies. This preliminary estimate reveals that this noise source alone is not expected to cause permanent or temporary threshold shift in the marine animals studied.

Item Type: Conference or Workshop Item (Paper)
Venue - Dates: Proceedings of the 30th International Conference on Ocean, Offshore and Arctic Engineering, Netherlands, 2011-06-19 - 2011-06-24
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Organisations: Fluid Structure Interactions Group
ePrint ID: 192957
Date :
Date Event
June 2011Published
Date Deposited: 13 Jul 2011 10:13
Last Modified: 18 Apr 2017 01:47
Further Information:Google Scholar
URI: http://eprints.soton.ac.uk/id/eprint/192957

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