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Metadata: 2023, Subacoustech, Marine Characterisation Research Project, Monitoring and modelling of underwater noise (WP10)
Abstract:
This data series was collected for the Marine Characterisation 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 Morlais Demonstration Zone (MDZ) is a region of the Irish Sea to the west of Anglesey that has been identified as suitable for operation of Tidal Energy Converter devices (TECs). Four acoustic transects were conducted within the MDZ to investigate the pre-existing background noise levels. This is part of the first step towards assessing potential underwater noise that could be generated by these devices and allows for assessment of the impacts these devices could have on marine life present in the area. 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.
Data holder:
The Crown Estate
| Other details | ||
| Internal code | Internally assigned metadata identifier | 19431 |
| Title | The title is used to provide a brief and precise description of the dataset such as 'Date', 'Originating organisation/programme', 'Location' and 'Type of survey'. All acronyms and abbreviations should be reproduced in full. | 2023, Subacoustech, Marine Characterisation Research Project, Monitoring and modelling of underwater noise (WP10) |
| Alternative title | The purpose of alternative title is to record any additional names by which the dataset may be known. | Monitoring and modelling of underwater noise (WP10) |
| File Identifier | The File Identifier is a code, preferably a GUID, that is globally unique and remains with the same metadata record even if the record is edited or transferred between portals or tools. | dc9742d2-94da-45f2-baa5-93a4ab5cebbc |
| Resource Identifier | This is the code assigned by the data owner. | TCE-3930 |
| Resource type | The resource type will likely be a dataset but could also be a series (collection of datasets with a common specification) or a service. | series |
| Start date | This describes the date the resource starts. This may only be the year if month and day are not known | 2023-02-11 |
| End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2023-02-12 |
| Frequency of updates | This describes the frequency with which the resource is modified or updated i.e. a monitoring programme that samples once per year has a frequency that is described as 'annually'. | notPlanned |
| Abstract | The abstract provides a clear and brief statement of the content of the resource. | This data series was collected for the Marine Characterisation 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 Morlais Demonstration Zone (MDZ) is a region of the Irish Sea to the west of Anglesey that has been identified as suitable for operation of Tidal Energy Converter devices (TECs). Four acoustic transects were conducted within the MDZ to investigate the pre-existing background noise levels. This is part of the first step towards assessing potential underwater noise that could be generated by these devices and allows for assessment of the impacts these devices could have on marine life present in the area. 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. |
| Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | The TAST was deployed from a vessel on 11th February 2023 at 11:24 within an area defined as the Survey Area. This was an area which, at the time of the survey, was assumed to be a key area of interest in which the tidal turbines would likely be installed. The TAST was deployed in a region within the Survey Area with a relatively consistent current, heading roughly northwest to north. While the vessel was drifting, the TAST was lowered into the water via a V-shaped cradle. The V-shaped cradle allowed for the TAST to be supported in a fixed orientation to help account for acoustic directionality. The TAST transmitted noise of three signal types between 1 kHz and 10 kHz at random (mid/high, low, and broadband frequencies), all of which may be used when installed on the TECs. The noise monitoring equipment, including the hydrophone, was deployed from a separate vessel. The hydrophone was suspended over the side of this vessel from an anti-heave (spar) buoy to minimise surface wave noise, and the signal lead was supported with pellet buoys to prevent the line from sinking. Ideally the TAST would have been operated from a fixed location, with a monitoring station located at controlled positions around it. The rapid currents in the MDZ meant that the TAST vessel could not hold steady from anchor and so the measurements were taken on a GPS-logged drift. With both vessels drifting, this had the advantage that they moved at approximately the same speed and direction, which allowed them to maintain a fairly constant separation. |
| Related keywords | ||
| Keyword | General subject area(s) associated with the resource, uses multiple controlled vocabularies | Acoustic noise in the water column |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Pre-Construction monitoring | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Agreement for Lease Area | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Oceanographic geographical features | |
| Geographical coverage | ||
| North | The northern-most limit of the data resource in decimal degrees | 53.9492 |
| East | The eastern-most limit of the data resource in decimal degrees | -5.4338 |
| South | The southern-most limit of the data resource in decimal degrees | 52.6696 |
| West | The western-most limit of the data resource in decimal degrees | -4.3804 |
| Responsible organisations | ||
| Role | The point of contact is person or organisation with responsibility for the creation and maintenance of the metadata for the resource. | pointOfContact |
| Organisation name | ABP Marine Environmental Research Ltd | |
| enquiries@abpmer.co.uk | ||
| Role | The custodian is the person or organisation that accepts responsibility for the resource and ensures appropriate care and maintenance. If a dataset has been lodged with a Data Archive Centre for maintenance then this organisation is be entered here. | custodian |
| Organisation name | The Crown Estate | |
| Phone | +44 020 7851 5000 | |
| enquiries@thecrownestate.co.uk | ||
| Role | The originator is the person or organisation who created, collected or produced the resource. | originator |
| Organisation name | Subacoustech Environmental Ltd. | |
| Individual name | Researcher Researcher | |
| dassh.enquiries@mba.ac.uk | ||
| Role | The distributor is the person or organisation that distributes the resource. | distributor |
| Organisation name | The Crown Estate | |
| Phone | +44 020 7851 5000 | |
| enquiries@thecrownestate.co.uk | ||
| Role | The owner is the person or organisation that owns the resource. | owner |
| Organisation name | Menter Môn | |
| enquiries@mentermon.com | ||
| Resource locators | ||
| Locator URL | Web address (URL) that links to the resource | https://www.marinedataexchange.co.uk/details/TCE-3930/summary |
| Web address (URL) that links to the resource | https://www.marinedataexchange.co.uk | |
| Dataset constraints | ||
| 20.1 Limitations on Public Access - Access constraints | This states `otherRestrictions` from ISO vocabulary RestrictionCode and is an INSPIRE/GEMINI requirement. | otherRestrictions |
| 20.2 Limitations on Public Access - Other constraints | https://www.marinedataexchange.co.uk/content/info/terms-of-use | |
| 21.1 Conditions for Access and Use - Use constraints | This states `otherRestrictions` from ISO vocabulary RestrictionCode and is an INSPIRE/GEMINI requirement. | otherRestrictions |
| 21.2 Conditions for Access and Use - Other constraints | This states any constraints on use of the data. Multiple conditions can be recorded for different parts of the data resource. If no conditions apply, then `No condtions apply` is recorded. This uses free text. | 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. |
| Version info | ||
| Date of publication | The publication date of the resource or if previously unpublished the date that the resource was made publicly available via the MEDIN network. | 2025-01-16 |
| Date of last revision | The most recent date that the resource was revised. | 2023-11-22 |
| Date of creation | The date that the resource was created. | 2023-02-12 |
| Harvest date | The date which this record has been (re)harvested from the provider. | 2026-04-19 |
| Metadata date | The date when the content of this metadata record was last updated. | 2026-02-05 |
| Metadata standard name | The name of the metadata standard used to create this metadata | MEDIN |
| Metadata standard version | The version of the MEDIN Discovery Metadata Standard used to create the metadata record | 3.1.2 |