© OpenStreetMap contributors
- Add External Layer
- Upload Shapefile
- Layer Tutorial
- Close
Use the checkbox () to show or hide a layer.
Use the radio buttons () to select a layer to use with the identify function.
- Layers
- Opacity
Available layers
(ctrl+c)
Search for marine data across UK organisations
- API
- How-To
- How-To
- About
- Contact MEDIN
- Share
Metadata: 2003-2004, Subacoustech, London Array, Measurements of underwater noise during construction
Abstract:
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.
Data holder:
The Crown Estate
| Other details | ||
| Internal code | Internally assigned metadata identifier | 19743 |
| 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. | 2003-2004, Subacoustech, London Array, Measurements of underwater noise during construction |
| Alternative title | The purpose of alternative title is to record any additional names by which the dataset may be known. | Measurements of underwater noise during construction |
| 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. | f9dd7664-1179-45e7-9cb8-2fa09a2b9a12 |
| Resource Identifier | This is the code assigned by the data owner. | TCE-973 |
| 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 | 2003-04-01 |
| End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2004-01-31 |
| 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. | 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. |
| Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | 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. |
| Additional information | This describes relevant references to the data e.g. reports, articles, websites plus other useful information not captured elsewhere. | Origin: Subacoustech Ltd |
| 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 | Consenting | |
| 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 | Land use | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Species distribution | |
| Geographical coverage | ||
| North | The northern-most limit of the data resource in decimal degrees | 51.765532097142 |
| East | The eastern-most limit of the data resource in decimal degrees | 1.6758136933659 |
| South | The southern-most limit of the data resource in decimal degrees | 51.565039353112 |
| West | The western-most limit of the data resource in decimal degrees | 1.3487921720695 |
| 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 | The Crown Estate | |
| enquiries@thecrownestate.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. | |
| subacoustech@subacoustech.com | ||
| 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 | RWE | |
| support@rwe.com | ||
| Resource locators | ||
| Locator URL | Web address (URL) that links to the resource | https://www.marinedataexchange.co.uk/details/TCE-973/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 | There will be no limitations when published on the Marine Data Exchange | |
| 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. | 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 |
| 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. | 2021-05-17 |
| Date of creation | The date that the resource was created. | 2004-10-12 |
| Harvest date | The date which this record has been (re)harvested from the provider. | 2026-09-27 |
| Metadata date | The date when the content of this metadata record was last updated. | 2026-09-10 |
| 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 |