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No. 150: Reporting of Impulsive noise sources to the ICES noise register. Activities in Greenland EEZ 2014-18

Kyhn, L.A., Clausen, D.S. & Tougaard, J. 2020. Reporting of Impulsive noise sources to the ICES noise register. Activities in Greenland EEZ 2014-18. Aarhus University, DCE – Danish Centre for Environment and Energy, 18 pp. Technical Report No. 150 http://dce2.au.dk/pub/TR150.pdf

Summary

Loud sources of impulsive noise with main energy below 10 kHz are to be reported to the ICES impulsive noise register, as part of Greenland’s obligations towards OSPAR. The present report summarizes available information about relevant activities for Greenland in the period 2014-2018. Relevant activities are seismic surveys, underwater explosions, impact pile driving, sonars below 10 kHz and other loud, impulsive sources below 10 kHz.

Only information about seismic surveys were available and the level of details of the reported data was insufficient for submission to the ICES register. Thus, no data has so far been submitted. However, for three commercial seismic surveys it has been possible to provide estimates of the impulse-block-days, which could be attributed to these surveys. One impulse-block-day indicates that a source has been active on a particular day within a particular area. The spatial resolution of reporting is ICES statistical sub-rectangles (20’ longitude x 10’ latitude).

  The extent of underreporting of other activities is discussed, including possible implications for future assessments of impact from underwater noise in OSPAR area I (Arctic Sea).