Measurement of noise source locations in depth from dredging ships with a vertical line array
Measurement of noise source locations in depth from dredging ships with a vertical line array
A number of in situ measurements of source level radiated from various dredging ships were carried out with hydrophones attached to anchored buoys and suspended from a survey vessel to determine the noise level for each of these ships in UK coastal waters. In order to determine the distribution of the noise sources from the ships, a 7-element hydrophone vertical line array was deployed from the survey vessel to measure the radiated noise. A digital compass was attached to the array to determine the orientation of the array to aid the beam forming. The noise from various operational modes, such as dredging in opposite directions, pump off and transit was recorded and processed to demonstrate the differences in noise levels and positions of the sources in the water column. The results of beam forming on the noise are presented and it is shown that full dredging does generate a very wide spectrum of noise and the most likely source is from the inline pump.
source level, noise, dredging, ansi s12.64.
Wang, L
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Humphrey, V.F.
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Robinson, S.P.
00d341a1-6153-45db-bda4-666928a652e5
Theobald, P.D.
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Lepper, P.A.
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Hayman, G.
c767c64a-8eb5-4415-8af3-55d125730818
June 2011
Wang, L
1aaf7ac6-9013-4a66-b5a6-15c50637d5d3
Humphrey, V.F.
23c9bd0c-7870-428f-b0dd-5ff158d22590
Robinson, S.P.
00d341a1-6153-45db-bda4-666928a652e5
Theobald, P.D.
236fc379-85f5-405f-9994-f9b07b14b8fa
Lepper, P.A.
fe6323f8-e7f8-486e-b22e-30fcca530c03
Hayman, G.
c767c64a-8eb5-4415-8af3-55d125730818
Wang, L, Humphrey, V.F., Robinson, S.P., Theobald, P.D., Lepper, P.A. and Hayman, G.
(2011)
Measurement of noise source locations in depth from dredging ships with a vertical line array.
Fourth International Conference on Underwater Acoustic Measurements, Technologies and Results, Kos, Greece.
19 - 23 Jun 2011.
Record type:
Conference or Workshop Item
(Paper)
Abstract
A number of in situ measurements of source level radiated from various dredging ships were carried out with hydrophones attached to anchored buoys and suspended from a survey vessel to determine the noise level for each of these ships in UK coastal waters. In order to determine the distribution of the noise sources from the ships, a 7-element hydrophone vertical line array was deployed from the survey vessel to measure the radiated noise. A digital compass was attached to the array to determine the orientation of the array to aid the beam forming. The noise from various operational modes, such as dredging in opposite directions, pump off and transit was recorded and processed to demonstrate the differences in noise levels and positions of the sources in the water column. The results of beam forming on the noise are presented and it is shown that full dredging does generate a very wide spectrum of noise and the most likely source is from the inline pump.
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More information
Published date: June 2011
Additional Information:
Page 771-781 of the proceedings made available to all registered participants on the first day of the conference.
Venue - Dates:
Fourth International Conference on Underwater Acoustic Measurements, Technologies and Results, Kos, Greece, 2011-06-19 - 2011-06-23
Keywords:
source level, noise, dredging, ansi s12.64.
Organisations:
Acoustics Group
Identifiers
Local EPrints ID: 195861
URI: http://eprints.soton.ac.uk/id/eprint/195861
PURE UUID: d3ea7b83-1a7b-4b31-ac36-04a9ea62e424
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Date deposited: 31 Aug 2011 08:40
Last modified: 11 Dec 2021 03:54
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Contributors
Author:
L Wang
Author:
S.P. Robinson
Author:
P.D. Theobald
Author:
P.A. Lepper
Author:
G. Hayman
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