f971ace7-d77a-42ee-87b4-8a7ff741ad22 English series series 2026-06-18T12:32:53 MEDIN 3.1.2 biota Bird counts SeaDataNet Parameter Discovery Vocabulary 2026-04-23 revision Bird behaviour SeaDataNet Parameter Discovery Vocabulary 2026-04-23 revision Bird taxonomy-related abundance per unit area of surface SeaDataNet Parameter Discovery Vocabulary 2026-04-23 revision Construction monitoring The Crown Estate Renewable Energy Development Phases 2012-05-15 revision Renewable Energy Lease area 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 North Sea SeaVoX Vertical Co-ordinate Coverages 2020-05-21 revision atmosphere 2011-01-19T00:00:00 2011-02-16T23:59:59 -3.67077555367112 -3.44373295185234 54.0092642401199 54.1279117469857 475.00 475.00 TCE-2190 Marine Data Exchange 2011, Danish Centre for Environment and Energy, Walney and Ormonde, Orithological Surveys Orithological Surveys 2021-05-17T14:09:48 publication English In December 2010 DONG Energy commissioned NERI to conduct aerial surveys of birds in a study area around the Walney Offshore Wind Farms and the Ormonde Offshore Wind Farm. The surveys were conducted by two methods, namely aerial surveys using human observers and surveys conducted as high resolution image surveys. In this briefing report we describe results from these surveys. 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 DONG Energy Power (UK) Ltd +44 (0) 20 7811 5200 infouk@dongenergy.co.uk originator The Crown Estate +44 020 7851 5000 enquiries@thecrownestate.co.uk distributor Orsted info@orsted.com owner notPlanned Documents https://www.marinedataexchange.co.uk/details/TCE-2190/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 During the aerial surveys a computer logged flight track data from a dif ferential GPS at five second intervals. Each record contained longitude, latitude, altitude and time. Accuracy of GPS longitude and latitude was normally considered to be within 2 m. In the very rare situations where the GPS failed during track-logging, positions of each bird observation were calculated from the known time of passage at the way points that were used for navigation and from the cruising speed of the aircraft. In these cases the spatial accuracy of the observation data is somewhat re duced. The majority of observations were considered to be accurate to within four seconds. With a flight speed of 185 km/h the positional accuracy on the longitudinal axis was within 206 m. In a few circumstances with high bird densities, grouping of observations in periods of up to 10 seconds may have occurred, leading to an accuracy of observation positioning of up to 515 m. ABP Marine Environmental Research Ltd 02380711840 enquiries@abpmer.co.uk pointOfContact EPSG Geodetic Parameter Registry 2022-12-12 revision WGS 84 / UTM zone 31N