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. In, Proceedings of the 30th International Conference on Ocean, Offshore and Arctic Engineering, Rotterdam, NL, 19 - 24 Jun 2011. 9pp.


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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)
Related URLs:
Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
Q Science > QC Physics
T Technology > TC Hydraulic engineering. Ocean engineering
Divisions : University Structure - Pre August 2011 > Institute of Sound and Vibration Research > Fluid Dynamics and Acoustics
University Structure - Pre August 2011 > School of Engineering Sciences > Fluid-Structure Interactions
ePrint ID: 192957
Accepted Date and Publication Date:
June 2011Delivered
Date Deposited: 13 Jul 2011 10:13
Last Modified: 31 Mar 2016 13:42

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