Impulsive noise pollution in the Northeast Atlantic: Reported activity during 2015-2017

Nathan D Merchant, Mathias H Andersson, Tetrienne Box, Florent Le Courtois, Dónal Cronin, Neil Holdsworth, Niels Kinneging, Sónia Mendes, Thomas Merck, John Mouat, Alain M J Norro, Benjamin Ollivier, Carlos Pinto, Philip Stamp, Jakob Tougaard

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Abstract

Underwater noise pollution from impulsive sources (e.g. explosions, seismic airguns, percussive pile driving) can affect marine fauna through mortality, physical injury, auditory damage, physiological stress, acoustic masking, and behavioural responses. Given the potential for large-scale impact on marine ecosystems, some countries are now monitoring impulsive noise activity, coordinated internationally through Regional Seas Conventions. Here, we assess impulsive noise activity in the Northeast Atlantic reported during 2015-2017 to the first international impulsive noise register (INR), established in 2016 under the OSPAR Convention. Seismic airgun surveys were the dominant noise source (67%-83% of annual activity) and declined by 38% during 2015-2017. Reported pile driving activity increased 46%. Explosions and sonar/acoustic deterrent devices both had overall increases in reported activity. Some increases were attributable to more comprehensive reporting in later years. We discuss utilising the INR for risk assessment, target setting, and forward planning, and the implementation of similar systems in other regions.

Original languageEnglish
Article number110951
JournalMarine Pollution Bulletin
Volume152
Early online date17 Feb 2020
DOIs
Publication statusPublished - Mar 2020

Keywords

  • Marine mammal
  • Noise abatement
  • Noise registry
  • Offshore windfarm
  • Quieting
  • Seismic survey

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