Underwater radiated noise from hydrofoils in coastal water
Underwater radiated noise from hydrofoils in coastal water
Underwater noise from commercial shipping throughout the oceans has been increasing over the past decades and the environmental impact of this noise remains an area of great uncertainty. This has led to the measurement of noise from commercial vessels in order to understand the impacts that they may engender. Hydrofoils are used by ferries in various locations around the world and locally may be a significant contributing factor of the soundscape . However, the investigation on underwater radiated noise from the activity of hydrofoils in the field has not been widely conducted. This article is an attempt to characterize the noise from hydrofoils in the field. Detailed measurements in the coastal water close to the Panarea port, Italy are reported. The investigation describes the broadband frequency spectrum with the main energy approximately centered on 30-130Hz but covering frequencies up to tens of kHz. A key result was that the spectrum of the noise varied between the three stages (displacement, transition, and foiling) of the hydrofoils heading into or out of the port.
Underwater acoustics, hydrofoil noise, coastal water, non-conventional vessel
3552-3561
Li, Jianghui
9c589194-00fa-4d42-abaf-53a32789cc5e
White, Paul
2dd2477b-5aa9-42e2-9d19-0806d994eaba
Roche, Ben
2746ee9e-1b87-4d2f-b4e1-dcdc0ca7a719
Davis, John
7f762b01-375b-42c8-80cb-65baefffdb97
Leighton, Timothy
3e5262ce-1d7d-42eb-b013-fcc5c286bbae
Li, Jianghui
9c589194-00fa-4d42-abaf-53a32789cc5e
White, Paul
2dd2477b-5aa9-42e2-9d19-0806d994eaba
Roche, Ben
2746ee9e-1b87-4d2f-b4e1-dcdc0ca7a719
Davis, John
7f762b01-375b-42c8-80cb-65baefffdb97
Leighton, Timothy
3e5262ce-1d7d-42eb-b013-fcc5c286bbae
Li, Jianghui, White, Paul, Roche, Ben, Davis, John and Leighton, Timothy
(2019)
Underwater radiated noise from hydrofoils in coastal water.
Journal of the Acoustical Society of America, 146 (5), , [3552].
(doi:10.1121/1.5134779).
Abstract
Underwater noise from commercial shipping throughout the oceans has been increasing over the past decades and the environmental impact of this noise remains an area of great uncertainty. This has led to the measurement of noise from commercial vessels in order to understand the impacts that they may engender. Hydrofoils are used by ferries in various locations around the world and locally may be a significant contributing factor of the soundscape . However, the investigation on underwater radiated noise from the activity of hydrofoils in the field has not been widely conducted. This article is an attempt to characterize the noise from hydrofoils in the field. Detailed measurements in the coastal water close to the Panarea port, Italy are reported. The investigation describes the broadband frequency spectrum with the main energy approximately centered on 30-130Hz but covering frequencies up to tens of kHz. A key result was that the spectrum of the noise varied between the three stages (displacement, transition, and foiling) of the hydrofoils heading into or out of the port.
Text
JASA-04237-accepted
- Accepted Manuscript
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Accepted/In Press date: 31 October 2019
e-pub ahead of print date: 26 November 2019
Keywords:
Underwater acoustics, hydrofoil noise, coastal water, non-conventional vessel
Identifiers
Local EPrints ID: 435503
URI: http://eprints.soton.ac.uk/id/eprint/435503
ISSN: 0001-4966
PURE UUID: 79ae51eb-f830-4c15-a1d5-b9206d7829ca
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Date deposited: 08 Nov 2019 17:30
Last modified: 17 Mar 2024 02:39
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Author:
Ben Roche
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