f9dd7664-1179-45e7-9cb8-2fa09a2b9a12 English series series 2026-09-10T12:20:56 MEDIN 3.1.2 oceans Acoustic noise in the water column 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 Land use GEMET - INSPIRE themes, version 1.0 2009-07-31 revision Species distribution 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 water column 2003-04-01T00:00:00 2004-01-31T00:00:00 1.34879217206949 1.6758136933659 51.5650393531118 51.7655320971418 TCE-973 Marine Data Exchange 2003-2004, Subacoustech, London Array, Measurements of underwater noise during construction Measurements of underwater noise during construction 2004-10-12T00:00:00 creation 2021-05-17T13:48:41 publication English Subacoustech Ltd have been contracted by The Crown Estate on behalf of Collaborative for Offshore Wind Research Into the Environment (COWRIE) to measure and interpret the underwater noise generated by offshore windfarms and their construction. The purposes of the measurements are to evaluate the pre-existing background noise environment, to rate noise from construction and operation of windfarms in terms of its potential for environmental effect, and to provide information which will aid estimation and minimisation of the impact of noise during the lifecycle (construction, operation and decommissioning) of windfarms. Origin: Subacoustech Ltd 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 Environmental Ltd. subacoustech@subacoustech.com originator The Crown Estate +44 020 7851 5000 enquiries@thecrownestate.co.uk distributor RWE support@rwe.com owner notPlanned Documents https://www.marinedataexchange.co.uk/details/TCE-973/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 measurements made and reported herein have been measured by the transect method. Measurements have been made from a dedicated survey vessel, which was used to move from location to location along a transect. At each measurement location the hydrophone was deployed into the water mounted on an anti-heave buoy, at first at 5, then at 10 metres depth where possible. The hydrophone was allowed to drift at least 10 metres away from the vessel before measurements were taken. The hydrophone cable was connected to the signal conditioning and digitising equipment, which is described in Appendix B. This was stored in the cabin of the vessel. Before making a recording, all extraneous noise sources such as electrical equipment and engines, were turned off. The signal was then checked for quality by both visual and audio inspection of the time history. At this point the signal conditioning settings, such as gain and pre-emphasis, were set to give the most appropriate input to the data acquisition card. The measurement was then taken, with a record made of hydrophone depth, sea state, weather conditions, local shipping movements, signal conditioning settings, bathymetry details and measurement co-ordinates (using a GPS system). Once the recording was made, the data was checked audibly for quality; spectral analysis was performed on a segment of the recording, both as a further quality check, and to give rapid initial feedback on the type of noise being measured. At each location a conductivity, temperature and salinity (CTD) probe was lowered over the side of the vessel to the sea bed, while the data acquisition systems logged the data. From this data a sound velocity profile may be derived; this information was archived for each measurement location. The above process was repeated for every measurement location along a transect. During the measurements an investigative approach was used to identify and characterise noise sources, in order that their potential effects could be best evaluated. The Crown Estate enquiries@thecrownestate.co.uk pointOfContact EPSG Geodetic Parameter Registry 2022-11-29 revision WGS 84