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    • ⇒ HELCOM: Baltic Marine Environment Protection Commission
    • HELCOM Manuals and Guidelines
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    •   Repository OceanBestPractices
    • ⇒ HELCOM: Baltic Marine Environment Protection Commission
    • HELCOM Manuals and Guidelines
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    HELCOM Guidelines for monitoring continuous noise.

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    Date
    2018
    Corporate Author
    HELCOM
    Status
    Published
    Pages
    10pp.
    
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    Abstract
    Continuous anthropogenic noise may exert a significant pressure on the marine environment due to its constancy and extent over vast areas. Distant ships, wind and rain, are examples of continuous sound sources. Sound from distant ships contributes to the ambient noise in lower frequencies (frequency bands 10 Hz to 1000 Hz), whereas smaller ships and ships at closer distance also add sound pressure at higher frequencies. The sound from ships is caused by the propulsion (propellers), machinery, and by the movement of the ship itself. The relative importance of these three different sources depends amongst other things; on the ship type, speed and load 1–3. Wind-induced sound (breaking waves and bubbles) are generated primarily in the band 100 Hz to 30 kHz. Rain produces noise mainly in the band 1 kHz to 10 kHz but also contributes to higher frequencies. Thermal noise resulting from molecular agitation dominates as a source at frequencies higher than 100 kHz. With respect to animal source.....
    Resource URL
    https://helcom.fi/helcom-at-work/publications/manuals-and-guidelines/
    Publisher
    HELCOM
    Helsinki, Finland
    Document Language
    en
    Sustainable Development Goals (SDG)
    14.1
    Essential Ocean Variables (EOV)
    Ocean sound
    Maturity Level
    Mature
    Spatial Coverage
    Baltic Sea
    Citation
    HELCOM (2018) HELCOM Guidelines for monitoring continuous noise. Helsinki, Finland, HELCOM, 10pp. DOI: http://dx.doi.org/10.25607/OBP-1800
    URI
    https://repository.oceanbestpractices.org/handle/11329/2005
    http://dx.doi.org/10.25607/OBP-1800
    Collections
    • CAPARDUS Practices [159]
    • HELCOM Manuals and Guidelines [37]

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