7f5cf49e-4e04-4f69-aed0-aeca86800db6 English series series 2026-07-22T11:19:08 MEDIN 3.1.2 biota geoscientificInformation oceans Sedimentary structure SeaDataNet Parameter Discovery Vocabulary 2026-06-19 revision Acoustic noise in the water column SeaDataNet Parameter Discovery Vocabulary 2026-06-19 revision Cetacean behaviour SeaDataNet Parameter Discovery Vocabulary 2026-06-19 revision Fish behaviour 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 SeaDataNet sea areas 2012-11-07 revision Irish Sea and St. George's Channel SeaVoX Vertical Co-ordinate Coverages 2020-05-21 revision water column 2003-03-31T23:00:00 2004-08-17T23:00:00 -3.61 -3.24 53.3 53.48 TCE-277 Marine Data Exchange 2003-2004, Subacoustech, COWRIE Research, Assessment of sub-sea noise and vibration from offshore wind turbines and its impact on marine wildlife Assessment of sub-sea noise and vibration from offshore wind turbines and its impact on marine wildlife 2007-01-01T00:00:00 creation 2021-05-17T13:34:01 publication English This series aimed to assess the underwater acoustic noise and vibration generated by offshore windfarm construction and operation in the UK, particularly focusing on the impacts on marine wildlife and the effectiveness of mitigation measures. The work, carried out between April 2003 and January 2004 at sites including North Hoyle and Scroby Sands, employed methodologies such as in situ underwater noise measurements, transmission loss modelling, hydrophone deployments, transect-based surveys, baseline-comparison analyses, caged fish trials, and marine mammal observations. Key findings showed that piling operations generate high impulsive noise levels, producing significant avoidance reactions and risk of injury in marine mammals and fish, often at ranges of several kilometres for avoidance and tens to hundreds of metres for physical harm. The research emphasized the need for site-specific noise modelling, continued empirical monitoring, improved baseline data, and the adoption of targeted mitigation measures such as bubble curtains, acoustic harassment devices, soft start procedures, and real-time monitoring with response protocols. Overall, the studies concluded that effective mitigation strategies, ongoing monitoring, and the development of species-specific noise thresholds are essential to minimizing risks to marine wildlife, and recommended further systematic evaluation and local adaptation of noise management techniques during offshore windfarm construction and operation. 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 Subacoustech Ltd. +44 (0)1489 891849 subacoustech@subacoustech.com originator The Crown Estate +44 020 7851 5000 enquiries@thecrownestate.co.uk distributor COWRIE cowrie@offshorewind.co.uk owner notPlanned Documents https://www.marinedataexchange.co.uk/details/TCE-277/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 basic steps in the processing and quality checking were as follows: 1. the log file for the measurement was interrogated to find equipment settings, GPS positions and other information, such as weather conditions; 2. the signal was spectrally de-emphasised; 3. the signal was converted from volts to Pascals using the hydrophone sensitivity and amplifier gain contained in the data’s header block; 4. the signal was high pass filtered at 10 Hz to remove any low frequency hydrodynamic noise due to the passage of waves; 5. the levels of sound were calculated in dB re 1 mPa, either as peak level and impulse level for impulsive sounds, such as piling, or as sound power spectra for continuous noise, such as drilling; 6. the dBht levels were calculated for selected species of fish and marine mammals; 7. time history files, with levels scaled to dB re 1 􀀀 Pa, and power spectral density files were created. Also, sound files (*.wav files) were created. Each of these records was inspected for quality. Records were checked visually using the time history to check for transients or other spurious data. The spectra were checked for tonal noise, such as 50 Hz mains noise, depth finder or sonar transmissions. Finally, every recording was listened to for spurious noises. Data which passed the quality checks and were processed were stored for further use. ABP Marine Environmental Research Ltd 02380711840 enquiries@abpmer.co.uk pointOfContact EPSG Geodetic Parameter Registry 2022-11-29 revision WGS 84