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Toward a standard for measurement of underwater noise from marine impact piling.

Robinson, S P; de Jong, C*; Mueller, A*; Theobald, P D (2013) Toward a standard for measurement of underwater noise from marine impact piling. J. Acoust. Soc. Am., 134 (5). p. 4024.

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Abstract

Marine impact piling is a significant source of low-frequency impulsive noise in the ocean and is typically used to position piled foundations in relatively shallow water for offshore construction, for example, offshore wind farms, bridge supports, etc. However, there are currently no international standards to define appropriate measurement methodologies, and there is a need to underpin incipient regulation with appropriate measurement standards. In the scientific literature, attempts to report the measured noise levels can be difficult to compare because different metrics are often used (peak-to-peak pressure, rms pressure, sound exposure level, etc). Furthermore, simple assumptions about equivalent point sources are often used in measurements and modeling without sufficient validation. Agreed acoustic metrics and a common way of deriving a meaningful measure of source output are urgently required. This paper describes work to address this need within the International Standards Organisation, specifically Working Group 3 of Technical Committee 43, Sub-Committee 3 (ISO TC43 SC3 WG3). Work to develop a new standard builds upon the expertise already gained by researchers in a number of countries (for example, United Kingdom, Netherlands, and Germany). A description is given of the methodology currently proposed, and the process for engagement with experts within different countries.

Item Type: Article
Keywords: acoustics, marine pile driving, noise, standards
Subjects: Acoustics
Acoustics > Underwater Acoustics
Identification number/DOI: 10.1121/1.4830691
Last Modified: 02 Feb 2018 13:14
URI: http://eprintspublications.npl.co.uk/id/eprint/6260

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