Averaging underwater noise levels for environmental assessment of shipping

Merchant, Nathan D. ORCID: https://orcid.org/0000-0002-1090-0016, Blondel, Philippe, Dakin, D. Tom and Dorocicz, John (2012) Averaging underwater noise levels for environmental assessment of shipping. Journal of the Acoustical Society of America, 132 (4). ISSN 0001-4966

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Abstract

Rising underwater noise levels from shipping have raised concerns regarding chronic impacts to marine fauna. However, there is a lack of consensus over how to average local shipping noise levels for environmental impact assessment. This paper addresses this issue using 110 days of continuous data recorded in the Strait of Georgia, Canada. Probability densities of ∼107 1-s samples in selected 1/3 octave bands were approximately stationary across one-month subsamples. Median and mode levels varied with averaging time. Mean sound pressure levels averaged in linear space, though susceptible to strong bias from outliers, are most relevant to cumulative impact assessment metrics.

Item Type:	Article
Uncontrolled Keywords:	sdg 14 - life below water ,/dk/atira/pure/sustainabledevelopmentgoals/life_below_water
Faculty \ School:	Faculty of Science > School of Environmental Sciences
UEA Research Groups:	Faculty of Science > Research Groups > Collaborative Centre for Sustainable Use of the Seas
Depositing User:	LivePure Connector
Date Deposited:	28 Mar 2022 09:30
Last Modified:	23 Oct 2022 03:40
URI:	https://ueaeprints.uea.ac.uk/id/eprint/84302
DOI:	10.1121/1.4754429

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