| Issue |
Acta Acust.
Volume 7, 2023
|
|
|---|---|---|
| Article Number | 46 | |
| Number of page(s) | 10 | |
| Section | Underwater Sound | |
| DOI | https://doi.org/10.1051/aacus/2023043 | |
| Published online | 13 October 2023 | |
Technical & Applied Article
Determining the directionality of anthropogenic noise using an underwater acoustic vector sensor: a case study in a Norwegian fjord
1
Institute of Marine Research, Ecosystem Acoustics Group, Bergen, Norway
2
Institute of Marine Research, Ecosystem Acoustics Group, Sauganeset 16, 5392 Storebø, Norway
* Corresponding author: guosong.zhang@hi.no
Received:
16
December
2022
Accepted:
21
August
2023
Sources of anthropogenic noise in the ocean have temporal and directional characteristics. Characterizing the soundscape requires identifying the directionality of the sources of noise in addition to the non-directional sound pressure. An underwater acoustic vector sensor (AVS) can be used to provide the directionality of incoming noise, and the concomitant sound pressure. We present an analysis of measurements from an AVS deployed in a Norwegian fjord in which there is frequent commercial ship traffic. We assessed the directionality of various known and unknown noise sources and used it to interpret the associated sound pressure. The fjord soundscape consists of time-varying noise directionality and intensity from anthropogenic sources, especially shipping activity. This case study highlights the benefits of using information from an AVS to assess noise directionality in a soundscape.
Key words: Ocean noise / Acoustic vector sensor / Noise directionality / Shipping noise / Sound pressure
© The Author(s), Published by EDP Sciences, 2023
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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