Modelling techniques for underwater noise generated by tidal turbines in shallow water
Modelling techniques for underwater noise generated by tidal turbines in shallow water
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.
Lloyd, Thomas P.
bcc9ab5a-b791-4f5c-9272-64e7624dc720
Turnock, Stephen R.
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Humphrey, Victor F.
23c9bd0c-7870-428f-b0dd-5ff158d22590
June 2011
Lloyd, Thomas P.
bcc9ab5a-b791-4f5c-9272-64e7624dc720
Turnock, Stephen R.
d6442f5c-d9af-4fdb-8406-7c79a92b26ce
Humphrey, Victor F.
23c9bd0c-7870-428f-b0dd-5ff158d22590
Lloyd, Thomas P., Turnock, Stephen R. and Humphrey, Victor F.
(2011)
Modelling techniques for underwater noise generated by tidal turbines in shallow water.
Proceedings of the 30th International Conference on Ocean, Offshore and Arctic Engineering, Rotterdam, Netherlands.
19 - 24 Jun 2011.
9 pp
.
Record type:
Conference or Workshop Item
(Paper)
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.
Text
OMAE2011-49994_REVISED_DRAFT.pdf
- Accepted Manuscript
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Published date: June 2011
Venue - Dates:
Proceedings of the 30th International Conference on Ocean, Offshore and Arctic Engineering, Rotterdam, Netherlands, 2011-06-19 - 2011-06-24
Organisations:
Fluid Structure Interactions Group
Identifiers
Local EPrints ID: 192957
URI: http://eprints.soton.ac.uk/id/eprint/192957
PURE UUID: 0c6b8db2-09ea-4117-b416-94740b3a48d8
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Date deposited: 13 Jul 2011 10:13
Last modified: 15 Mar 2024 03:17
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Author:
Thomas P. Lloyd
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