Abstract
Chronic low frequency anthropogenic sound, such as shipping noise, may be negatively affecting marine life. The EU’s Marine Strategy Framework Directive (MSFD) includes a specific indicator focused on this noise. This indicator is the yearly average sound level in third-octave bands with centre frequencies at 63 Hz and 125 Hz. These levels are described for Falmouth Bay, UK, an active
port at the entrance to the English Channel. Underwater sound was recorded for 30 min. h-1 over the period June 2012 to November 2013 for a total of 435 days. Mean third-octave levels were louder in the 125-Hz band (annual mean level of 96.0 dB re 1 μPa) than in the 63-Hz band (92.6 dB re 1 μPa).
These levels and variations are assessed as a function of seasons, shipping activity and wave height, providing comparison points for future monitoring activities, including the MSFD and emerging international regulation.
port at the entrance to the English Channel. Underwater sound was recorded for 30 min. h-1 over the period June 2012 to November 2013 for a total of 435 days. Mean third-octave levels were louder in the 125-Hz band (annual mean level of 96.0 dB re 1 μPa) than in the 63-Hz band (92.6 dB re 1 μPa).
These levels and variations are assessed as a function of seasons, shipping activity and wave height, providing comparison points for future monitoring activities, including the MSFD and emerging international regulation.
Original language | English |
---|---|
Pages (from-to) | 438-448 |
Number of pages | 28 |
Journal | Marine Pollution Bulletin |
Volume | 110 |
Issue number | 1 |
Early online date | 5 Jul 2016 |
DOIs | |
Publication status | Published - 15 Sept 2016 |
Keywords
- MSFD
- shipping noise
- third-octave levels
- underwater sound
- disturbance
- marine
- Marine Strategy Framework Directive
ASJC Scopus subject areas
- Acoustics and Ultrasonics
- Ocean Engineering
- Oceanography
- Renewable Energy, Sustainability and the Environment
- Geophysics
Fingerprint
Dive into the research topics of 'Long term underwater sound measurements in the shipping noise indicator bands 63 Hz and 125 Hz from the port of Falmouth Bay, UK'. Together they form a unique fingerprint.Profiles
-
Philippe Blondel
- Department of Physics - Senior Lecturer
- Institute for Sustainable Energy and the Environment
- Water Innovation and Research Centre (WIRC)
- EPSRC Centre for Doctoral Training in Statistical Applied Mathematics (SAMBa)
- Institute for Mathematical Innovation (IMI)
- Centre for Mathematical Biology
- Centre for Climate Adaptation & Environment Research (CAER)
- Astrophysics
Person: Research & Teaching, Core staff, Affiliate staff