Institute of Marine Research, Bergen, Norway.
Institute of Marine Research, Bergen, Norway.
Mar Pollut Bull. 2020 Apr;153:110948. doi: 10.1016/j.marpolbul.2020.110948. Epub 2020 Feb 12.
Measurements of underwater noise radiated under ship normal operations are presented. The acoustic data, from the cabled ocean observatory, are analyzed under each identified ship passage, which was obtained by the Automatic Identification System. Under each passage, sound pressure level is calculated to observe local noise variations due to shipping noise. This paper emphasizes the study of noise variations at the observatory, presents the noise measurements under identified ship passages in the last several years, and provides references for predictive models of underwater noise pollution from commercial ship traffic. From the passages of one ship to the passages of 26 ships, the measurements reveal similar variation patterns when the ships traveled at similar courses, but different patterns when they traveled at different courses. When evaluating the noise variations due to ship traffics, it is important to consider the shipping noise propagation as well as ship movement.
本文介绍了船舶正常运行时水下辐射噪声的测量方法。声学数据来自海底观测网，根据自动识别系统获取的每条船舶的通过记录进行分析。在每条通过记录下，计算声压级以观察由于船舶噪声引起的局部噪声变化。本文强调了观测站噪声变化的研究，给出了过去几年中在已识别的船舶通过记录下的噪声测量结果，为商业船舶交通引起的水下噪声污染预测模型提供了参考。从一条船的通过记录到 26 条船的通过记录，当船舶以相似的航向行驶时，测量结果呈现出相似的变化模式，但当它们以不同的航向行驶时则呈现出不同的模式。在评估船舶交通引起的噪声变化时，考虑船舶噪声传播和船舶运动非常重要。
