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Impact of the COVID-19 pandemic on levels of deep-ocean acoustic noise
Robinson, S.; Harris, P.; Cheong, S.-H.; Wang, L.; Livina, V.; Haralabus, G.; Zampolli, M.; Nielsen, P. (2023). Impact of the COVID-19 pandemic on levels of deep-ocean acoustic noise. NPG Scientific Reports 13(1): 4631. https://dx.doi.org/10.1038/s41598-023-31376-3
In: Scientific Reports (Nature Publishing Group). Nature Publishing Group: London. ISSN 2045-2322; e-ISSN 2045-2322
Peer reviewed article  
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Auteurs  Top 
  • Robinson, S.
  • Harris, P.
  • Cheong, S.-H.
  • Wang, L.
  • Livina, V.
  • Haralabus, G.
  • Zampolli, M.
  • Nielsen, P.
Abstract
    The extraordinary circumstances of the COVID-19 pandemic led to measures to mitigate the spread of the disease, with lockdowns and mobility restrictions at national and international levels. These measures led to sudden and sometimes dramatic reductions in human activity, including significant reductions in ship traffic in the maritime sector. We report on a reduction of deep-ocean acoustic noise in three ocean basins in 2020, based on data acquired by hydroacoustic stations in the International Monitoring System of the Comprehensive Nuclear-Test-Ban Treaty. The noise levels measured in 2020 are compared with predicted levels obtained from modelling data from previous years using Gaussian Process regression. Comparison of the predictions with measured data for 2020 shows reductions of between 1 and 3 dB in the frequency range from 10 to 100 Hz for all but one of the stations.
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