Description

Continuous sounds are one of the criteria for good environmental status for descriptor 11 on noise pressure generated by anthropogenic activities under the MSFD (D11C2). Good environmental status for sound energy is achieved when the risks of acoustic disturbance, excess mortality by sound exposure and reduction of communication distances of mysticets are cumulatively low or moderate. For this, the spatial distribution, temporal extent and acoustic levels of anthropogenic continuous sounds must not exceed levels harmful to marine animal populations. These criteria are assessed at the level of the marine sub-region for the Channel and North Sea, Celtic Seas and Western Mediterranean regions and at the level of the North and South subdivisions in the Bay of Biscay sub-region. One of the indicators selected for the assessment of criterion D11C2 is the spatial distribution of annual ambient noise for the 63 Hz centred third-octave band (D11C2.1). The pressure considered for the evaluation of the criterion is the noise generated by maritime traffic, mainly in its trade and transport component which is subject to regulatory oversight by automatic identification system (AIS). The data used for the calculation of this indicator are in situ noise data (MAMBO device) and maritime traffic data (Lloyd’s).

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Name	Format	Description	Link
	0		https://www.data.gouv.fr/api/1/datasets/r/af16bfa9-ed4c-44de-86ec-46728fb42fbb
	0		https://www.data.gouv.fr/api/1/datasets/r/af3c416b-1fcf-4fcc-af63-38b87ee2bbf9
	0		https://www.data.gouv.fr/api/1/datasets/r/f318c222-3269-4683-98f6-8960145b6af1
	0		https://www.data.gouv.fr/api/1/datasets/r/a674b0b2-1727-4d6f-9d1c-619b37b1b849

DCSMM2024_D11C2.1 Spatial distribution of annual maximum levels for the year 2021 and trends (2015 to 2021) per mesh for the 63 Hz centred third octave band

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