176e2ee8-f4df-4b59-81c6-3d238792cb15 English series series 2026-09-10T11:34:22 MEDIN 3.1.2 climatologyMeteorologyAtmosphere economy oceans Acoustic noise in the water column SeaDataNet Parameter Discovery Vocabulary 2026-06-19 revision Industrial activity SeaDataNet Parameter Discovery Vocabulary 2026-06-19 revision Wind strength and direction SeaDataNet Parameter Discovery Vocabulary 2026-06-19 revision Consenting The Crown Estate Renewable Energy Development Phases 2012-05-15 revision Agreement for Lease Area The Crown Estate Renewable Energy Development Areas 2012-05-15 revision Human health and safety GEMET - INSPIRE themes, version 1.0 2009-07-31 revision SeaDataNet sea areas 2012-11-07 revision English Channel SeaVoX Vertical Co-ordinate Coverages 2020-05-21 revision atmosphere 2002-10-14T00:00:00 2002-10-14T23:59:59 1.18221415492963 1.26099093245853 51.7105268136316 51.7529100147345 TCE-500 Marine Data Exchange 2002, Hayes-McKenzie Partnership, Gunfleet Sands 1 and 2, Noise Impact Assessment Noise Impact Assessment 2021-05-17T13:38:43 publication English Hayes-McKenzie Partnership have conducted a comprehensive noise impact assessment in 2002 for the offshore wind farm at Gunfleet Sands, including in-air and in-water assessments. It is anticipated that sound pressure levels underwater during the development stage may be sufficient as to disturb the marine environment. Once the wind farm is operational, as the turbine blades rotate, it is anticipated that vibrations could arise and these would be transmitted down the wind tower and in to the underwater environment. Once again, subsequent noise levels could be sufficient to disturb marine life. The extensive nature of this kind of activity requires that an assessment of the potential impact on the environment be determined. The first stage in determining the scale of any potential impact on the environment is to determine sound pressure levels underwater during the construction and post-commission phases. This project reports on the findings from a number of computer model simulations using frequencies appropriate to both piledriving and wind turbine operations and for this, the underwater acoustic propagation computer program SAFARI has been used. The modelling results show that the sound pressure levels during the piledriving phase are likely to remain above background noise levels over a range of 20km; sound pressure levels during the post-commission stage for most of the frequencies considered in the range 20-2000 Hz are likely to fall below background noise levels at ranges between 200m and 1000m. The exceptions to this are the 400 Hz and 500 Hz components where the SPL is likely to remain above the background noise level at ranges up to 2.5km. Although risks remain numerous and varied, they are generally considered manageable. Presentation type: digital representation of a primarily textual item (can contain illustrations also) Supply media: 002 Origin: QinetiQ 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 Hayes-McKenzie Partnership +44 (0)1722 710 091 salisbury@hayesmckenzie.co.uk originator The Crown Estate +44 020 7851 5000 enquiries@thecrownestate.co.uk distributor Orsted info@orsted.com owner notPlanned Delimited Documents https://www.marinedataexchange.co.uk/details/TCE-500/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 QinetiQ has been tasked by Hayes-McKenzie Partnership to conduct this study. In order to characterise both the piledriving and wind turbine operations, the computer program SAFARI was run over a number of standard centre frequencies for adjacent 1/3 octave bands from 20 Hz to 2000 Hz. For each frequency, the sound pressure level (SPL) in the water was computed as a function of range and depth for a number of receptor depths. The SPL was subsequently compared with background noise levels. Orsted info@orsted.com pointOfContact EPSG Geodetic Parameter Registry 2022-11-29 revision WGS 84