Description

Impulsive or transient sounds of short duration and high intensity are one of the criteria for defining good environmental status for descriptor 11 on noise pressure generated by anthropogenic activities under the MSFD (D11C1). 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 impulsive sound sources 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 evaluation of criterion D11C1 is the spatial distribution of impulsive emissions (D11C1.2). The pressures considered for the evaluation of the criterion are: acoustic emissions from air guns; acoustic emissions from impulsive sources other than air guns; emissions from non-impulsed (transitional) sources; underwater explosions; emissions due to pile driving. The data used for the calculation of this indicator shall be declarative emission data plotted by operators of impulsive noise generating activities.

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Name	Format	Description	Link
	0		https://www.data.gouv.fr/api/1/datasets/r/b6718b27-6aca-4886-aae3-6eceffc67420
	0		https://www.data.gouv.fr/api/1/datasets/r/b1cd4fcd-95e6-4ebe-9e3f-b3a93d5e5b92
	0		https://www.data.gouv.fr/api/1/datasets/r/e6a780f7-85f7-4f8f-9e7b-2392b0bbabbb
	0		https://www.data.gouv.fr/api/1/datasets/r/ab969ff6-dce4-488c-b847-180a68077a65

DCSMM2024_D11C1.2 Spatial distribution of annual impulsive sound emissions at all levels that may result in a risk of disturbance for the years 2016 to 2021

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