4eb9b3aa-8566-405b-8922-b559882e8168 English series series 2026-02-05T11:48:16 MEDIN 3.1.2 biota oceans Acoustic noise in the water column SeaDataNet Parameter Discovery Vocabulary 2023-12-12 revision Cetacean behaviour SeaDataNet Parameter Discovery Vocabulary 2023-12-12 revision Cetacean abundance SeaDataNet Parameter Discovery Vocabulary 2023-12-12 revision Pre-Construction monitoring 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 Oceanographic geographical features GEMET - INSPIRE themes, version 1.0 2009-07-31 revision Species distribution GEMET - INSPIRE themes, version 1.0 2009-07-31 revision SeaVoX Vertical Co-ordinate Coverages 2020-05-21 revision unknown 2023-05-16T23:00:00 2023-11-29T00:00:00 -4.6668 -4.7616 53.2397 53.3503 TCE-3936 Marine Data Exchange 2022-2023, University of St Andrews, Morlais, Marine Characterisation Research Project, Towed PAM (WP15b) Marine Characterisation Research Project 2023-07-25T00:00:00 creation 2025-01-16T16:18:56 publication 2023-12-18T00:00:00 revision English Data collected on multi-channel hydrophone arrays to determine 3D locations of cetaceans off the Holyhead coast. Trials where the essential concept was to mount an array of hydrophones and coaligned orientation sensors within a streamlined acoustically transparent free-flooding enclosure. In this way flow noise over the hydrophones should be minimised and the hydrophone array should be protected from physical damage. The array and enclosure went through three design iterations during the project. These rebuilds involved simplifying the design and reducing the size of the streamlined body and internal hydrophone frame, and improving ballasting configurations to minimise roll, resolving a tendency for the array to rotate completely while being towed. Here the latest and best-performing version is outlined. Access to the MCRP data is strictly subject to the MCRP Data Terms of Use. Please ensure that you read and understand the Terms of Use prior to using any of the data as you will be bound to comply with the same. The MCRP Terms of Use are the prevailing Terms of Use and supersede that of Marine Data Exchange Terms of Use in relation to MCRP data. https://www.marinedataexchange.co.uk/content/info/terms-of-use otherRestrictions Once published, there will be no constraints on access and use. Data must be used in accordance with the Marine Data Exchanges Terms of Use which can be found on the website. otherRestrictions The Crown Estate +44 020 7851 5000 enquiries@thecrownestate.co.uk custodian Researcher Researcher University of St Andrews, School of Biology Researcher dassh.enquiries@mba.ac.uk originator The Crown Estate +44 020 7851 5000 enquiries@thecrownestate.co.uk distributor The Crown Estate enquiries@thecrownestate.co.uk owner notPlanned Delimited Documents https://www.marinedataexchange.co.uk/details/TCE-3936/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 True Underwater Noise 2025-11-27 revision This series has been Quality Assured so that it is compliant with the aforementioned MEDIN Guidelines and thus contains the mandatory components. In some instances, this compliance will not be feasible. True series These data consist of high frequency raw acoustic recordings collected on hydrophone arrays to localize the underwater location of dolphins and porpoises. Hydrophone arrays consist of multiple dispersed hydrophones. Two types of hydrophone array were used to collect data, a drifting vertical array and bottom mounted arrays. This dataset has been collected by the University of St Andrews as part of the The Marine Characterisation Research Project (MCRP) which forms part of the Morlais tidal energy project, managed by Menter Môn and funded by the European Regional Development Fund and The Crown Estate. The Marine Characterisation Research Project (MCRP) is an innovative research and development project that will ensure the safe phased deployment of tidal energy turbines in the Morlais Demonstration Zone. ABP Marine Environmental Research Ltd 02380711840 enquiries@abpmer.co.uk pointOfContact EPSG Geodetic Parameter Registry 2022-12-12 revision WGS 84 / UTM zone 30N