4c8cae76-3c72-4876-b9d4-ccdd832e9a35 English series series RWE RWE RWE Support@RWE.com pointOfContact 2025-10-24 MEDIN 3.1.2 EPSG Geodetic Parameter Registry 2021-01-06 revision WGS 84 2012, Subacoustech, Gwynt y Mor, Operational Underwater Noise 2025-05-06 publication 2016-05-19 revision 2016-05-19 creation MDE-TCE-SITENUMBER-SERIESNUMBER MDE-TCE-Gwyntymor-2012 Gwynt y Mor, Operational Underwater Noise - Operational underwater noise RWE RWE RWE RWE Support@RWE.com owner RWE RWE RWE RWE Support@RWE.com custodian RWE RWE RWE RWE Support@RWE.com originator RWE RWE RWE RWE Support@RWE.com distributor notPlanned Marine Environmental Data and Information Network MEDIN metadata record availability 2025-10-24 revision NDGO0005 NDGO0005 2025-10-24 revision Environmental monitoring facilities Sea regions GEMET - INSPIRE themes, version 1.0 2021-09-28 revision Acoustic noise in the water column SeaDataNet Parameter Discovery Vocabulary 2021-09-28 revision otherRestrictions No Limitations when published on the MDE 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 English 8-bit variable size UCS Transfer Format, based on ISO/IEC 10646 oceans -3.744224095701 -3.5483845741009 53.406680485869 53.512271898054 SeaVox salt and freshwater body gazetteer 2021-01-06 creation Liverpool Bay 2025-10-24 2025-10-24 SeaVoX Vertical Co-ordinate Coverages 2021-01-06 revision atmosphere Documents Final https://admin.marinedataexchange.co.uk/tce/site/51/series/4196/summary 2012, Subacoustech, Gwynt y Mor, Operational Underwater Noise Link to MDE information series 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 2010-12-08 publication Not Required in Project or MDE false In order to estimate the likely noise levels from operational wind turbines, source levels and transmission losses produced by similar turbines in similar conditions around the UK will be looked at. These results will then be compared against predictions using the openly available RAMSGeo software package. These levels will then be assessed using a wide variety of noise metrics in order to assess the impacts that the noise from the operational wind turbines at Gwynt y Môr may have on the key species in the area.Measurement of underwater noise Sound may be expressed in many different ways depending on the particular type of noise, and the parameters of the noise that will allow it to be evaluated in terms of a biological effect. These are described in more details below. The fact that sound spreads out as it travels from the source needs to be included in any assessment of received levels. As the measurement point moves away from the source, a piling operation for instance, the pressure measured will decrease due to spreading. To standardise all source levels, regardless of where they are measured, they are referred back to a conceptual point 1 m away from the point of origin of the noise. Consequently, source levels should and will be presented with units of ‘dB re 1 µPa @ 1 m’.