2026-01-26 バース大学
Manmade noise can disrupt underwater Arctic wildlife, which is why sound levels in Artic seas need better monitoring.
＜関連情報＞
- https://www.bath.ac.uk/announcements/arctic-seas-are-getting-louder-as-ice-melts-posing-risks-study-shows-how-to-better-measure-noise/
- https://www.nature.com/articles/s44384-025-00038-1
北極海の海洋音響と人間の影響：「船舶帯域」を超えて Marine soundscapes of the Arctic and human impacts: going beyond the “shipping bands”
Philippe Blondel,Rhys Belcher & Dylan Cooper
npj Acoustics Published:09 January 2026
DOI:https://doi.org/10.1038/s44384-025-00038-1
Abstract
In the Arctic, amplified climate change enables increased human activity, adding to sounds in the ocean. Future guidelines need to know local baselines and how best to measure anthropogenic impacts. The EU Marine Strategy Framework Directive uses “shipping bands”, third-octave bands centred on 63 Hz and 125 Hz. Addressing the lack of measurements, acoustic models often use satellite recordings of ship tracks, We investigate sound levels in Cambridge Bay (Nunavut, Canada) between 2015 and 2024, comparing May (full ice cover, no shipping) and August (little to no ice, shipping activity). We show “shipping bands” should include frequencies up to several kHz and sounds include snowmobiles, aircraft and small vessels untracked by satellites. This will need addressing in future guidelines. This is particularly important because of the development of Arctic shipping routes, increasing resource exploration and tourism, amplified by current plans for the expansion of mining, drilling and other geostrategic pressures.
