b87b63b7-d5b1-46d7-866d-e20b2c815b41 English series series 2026-07-17T15:15:54 MEDIN 3.1.2 biota oceans Acoustic noise in the water column SeaDataNet Parameter Discovery Vocabulary 2026-06-19 revision Cetacean behaviour SeaDataNet Parameter Discovery Vocabulary 2026-06-19 revision Cetacean abundance SeaDataNet Parameter Discovery Vocabulary 2026-06-19 revision Research The Crown Estate Renewable Energy Development Phases 2012-05-15 revision Research and Development Activity The Crown Estate Renewable Energy Development Areas 2012-05-15 revision Species distribution GEMET - INSPIRE themes, version 1.0 2009-07-31 revision SeaVoX Vertical Co-ordinate Coverages 2020-05-21 revision water column 2010-07-01T00:00:00 2010-07-01T00:00:00 3.362 4.341646937946039 51.163207205726486 51.83060608598 TCE-276 Marine Data Exchange 2010, SEAMARCO, COWRIE Research, Acoustic Mitigation Devices (AMDs) to Deter Marine Mammals from Pile Driving Areas Acoustic Mitigation Devices (AMDs) to Deter Marine Mammals from Pile Driving Areas 2007-01-01T00:00:00 creation 2021-05-17T13:34:01 publication English For the sustainable development of the offshore renewable energy industry, it is necessary to reduce or avoid the damaging effects of noise (such as death or permanent hearing damage), from activities which produce high sound pressure levels, such as pile driving, on marine mammals. One way to achieve this is to ensure that marine mammals are not present in areas where loud noises are being produced, by deterring them by means of safe sounds produced by Acoustic Mitigation Devices (AMDs). Research is needed to determine whether AMDs can mitigate immediate vicinity impacts of loud sounds, which could give rise to temporary or permanent hearing damage, injury or death of marine mammals. In the North Sea, the two most abundant marine mammal species are the harbour porpoise (Phocoena phocoena) and the harbour seal (Phoca vitulina). COWRIE commissioned SEAMARCO to carry out four studies on the audibility of sounds produced by three selected AMDs and their effect on the behaviour of harbour porpoises and harbour seals (playback experiments). In addition to achieving these aims, SEAMARCO estimated the distances at which sounds from AMDs are audible to, and elicit behavioural responses in, harbour porpoises and harbour seals. There will be no limitations when published on the Marine Data Exchange otherRestrictions Data Must be used in accordance to the Marine Data Exchange's Terms of Use: https://www.marinedataexchange.co.uk/content/info/terms-of-use otherRestrictions The Crown Estate +44 020 7851 5000 enquiries@thecrownestate.co.uk custodian SEAMARCO (Sea Mammal Research Company) +31(0)341456252 esearchteam@zonnet.nl originator The Crown Estate +44 020 7851 5000 enquiries@thecrownestate.co.uk distributor COWRIE Ltd cowrie@offshorewind.co.uk owner notPlanned Documents https://www.marinedataexchange.co.uk/details/TCE-276/summary A link to the web service or dataset. https://www.marinedataexchange.co.uk A link to the general host site. Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services 2010-12-08T00:00:00 publication Conformity with the Commission Regulation (EU) No 1089/2010 was either not relevant to this dataset or not a requirement of the Marine Data Exchange for the creation and submission of this dataset; therefore, conformity has not been assessed and cannot be declared False series The goals of the research can be summarised as follows: • Determine the audibility (hearing thresholds) of AMD sounds for harbour porpoises and harbour seals • Determine the behavioural response (avoidance thresholds) of harbour porpoises and harbour seals to AMD sounds • Compare the hearing thresholds for the AMD sounds with the tonal thresholds (can hearing thresholds of broadband signals be predicted from hearing thresholds for tonal sounds?) • Estimate the distance at which AMD sounds can be heard by harbour porpoises and harbour seals at sea • Estimate the distance at which AMDs cause a behavioural response in harbour porpoises and harbour seals at sea. The overall purpose of the research was to contribute towards the optimal use of AMDs to deter marine mammals from pile driving sites. The results will inform the selection of the optimum signal parameters of AMDs for deterring harbour porpoises and harbour seals sufficiently far from pile driving areas at sea before pile driving begins, so that wild porpoises’ and seals’ hearing will not be compromised. ABP Marine Environmental Research Ltd 02380711840 enquiries@abpmer.co.uk pointOfContact EPSG Geodetic Parameter Registry 2022-11-29 revision WGS 84