Measurement of the underwater noise footprint of a vessel
Measurement of the underwater noise footprint of a vessel
The Impacts of man-made underwater noise on the marine environment have received increased attention over recent years, primarily resulting from recognition of the increased pressures placed on the oceans by human activities. A main source of such anthropogenic noise is shipping. In order to understand the underwater soundscape considerable effort is being placed on generating
underwater noise maps, based on using AIS data to provide details of vessel locations and operational characteristics. A key input for noise mapping models is an adequate knowledge of the source strength and characteristics for each vessel. Currently the sources are usually assumed omnidirectional, given the limited data on the true vessel radiation pattern. This paper presents
the result of a trial undertaken on a small survey vessel, operating under realistic conditions at sea in shallow water, as part of the SONIC project. This trial used an autonomous recorder to measure the sound pressure as a function of range and azimuth. The vessel made a repeated runs past the autonomous recorder for a variety of different ranges. This has enabled the vessel noise footprint
to be measured as a function of frequency and speed for the vessel, showing how the azimuthal characteristics change with frequency.
5007-5014
Humphrey, Victor
23c9bd0c-7870-428f-b0dd-5ff158d22590
Brooker, A.
697dab16-6ad3-4a73-a69e-028b93e94691
23 July 2017
Humphrey, Victor
23c9bd0c-7870-428f-b0dd-5ff158d22590
Brooker, A.
697dab16-6ad3-4a73-a69e-028b93e94691
Humphrey, Victor and Brooker, A.
(2017)
Measurement of the underwater noise footprint of a vessel.
24th International Congress on Sound and Vibration, Park Plaza Westminster Bridge Hotel, London, United Kingdom.
23 - 27 Jul 2017.
.
Record type:
Conference or Workshop Item
(Paper)
Abstract
The Impacts of man-made underwater noise on the marine environment have received increased attention over recent years, primarily resulting from recognition of the increased pressures placed on the oceans by human activities. A main source of such anthropogenic noise is shipping. In order to understand the underwater soundscape considerable effort is being placed on generating
underwater noise maps, based on using AIS data to provide details of vessel locations and operational characteristics. A key input for noise mapping models is an adequate knowledge of the source strength and characteristics for each vessel. Currently the sources are usually assumed omnidirectional, given the limited data on the true vessel radiation pattern. This paper presents
the result of a trial undertaken on a small survey vessel, operating under realistic conditions at sea in shallow water, as part of the SONIC project. This trial used an autonomous recorder to measure the sound pressure as a function of range and azimuth. The vessel made a repeated runs past the autonomous recorder for a variety of different ranges. This has enabled the vessel noise footprint
to be measured as a function of frequency and speed for the vessel, showing how the azimuthal characteristics change with frequency.
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Accepted/In Press date: 2 June 2017
Published date: 23 July 2017
Venue - Dates:
24th International Congress on Sound and Vibration, Park Plaza Westminster Bridge Hotel, London, United Kingdom, 2017-07-23 - 2017-07-27
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Local EPrints ID: 413268
URI: http://eprints.soton.ac.uk/id/eprint/413268
PURE UUID: 9ec78d35-c740-4fe2-9558-83be4a6fc4a2
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Date deposited: 18 Aug 2017 16:31
Last modified: 16 Mar 2024 03:34
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Author:
A. Brooker
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