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 ∼ 10 7 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. Probability densities of ~ 10^7 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.
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.
| Original language | English |
|---|---|
| Pages (from-to) | EL343-EL349 |
| Number of pages | 8 |
| Journal | Journal of the Acoustical Society of America |
| Volume | 132 |
| Issue number | 4 |
| Early online date | 19 Sept 2012 |
| DOIs | |
| Publication status | Published - 1 Oct 2012 |
Keywords
- underwater acoustics
- ambient noise
- shipping
- Environmental impact
Access to Document
- Merchant etal averaging shipping noise levels 2012 JASA EL
Copyright (2012) Acoustical Society of America. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the Acoustical Society of America. The following article appeared in Journal of the Acoustical Society of America 132(4) and may be found at https://doi.org/10.1121/1.4754429