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Metadata: 2010, SMRU Ltd., SeaGen Strangford Lough, SeaGen Noise Biological Assessment
Abstract:
SeaGen produces underwater noise during operation that contains both tonal and broadband components which cover a frequency range similar to the most sensitive hearing range of several marine species. Underwater sound propagation models were used to predict noise levels around SeaGen. Within one kilometre of SeaGen, simple transmission loss models fit the data relatively well; however received levels were found to increase at distances of more than 3km. The source level of SeaGen was back-calculated using the field measurements and the sound propagation models; source level (rms) was estimated to be 174 dB re 1µPa. Although this is lower than some anthropogenic noise sources (e.g. seismic airguns), levels are comparable to a large vessel underway and it is important to highlight that SeaGen produces noise more or less continuously requiring longer exposure times to be taken into account when predicting hearing damage. The potential effects on fish and marine mammals of underwater noise from SeaGen were predicted using current information on hearing abilities and observed responses from previous studies, and are presented as a series of influence zones (e.g. zone of audibility, zone of behavioural responses) around SeaGen. It is important to highlight that predictions of influence zones must be viewed alongside their associated caveats. Specifically, empirical noise data were only available out to 3.5km from SeaGen; predictions of influence zones at ranges greater than this are therefore based solely on transmission loss models and must therefore be treated with caution. This series contains the assessment report.
Data holder:
Marine Current Turbines Limited
Use constraints:
http://marinedataexchange.co.uk/pages/terms-of-use.
| Other details | ||
| Internal code | Internally assigned metadata identifier | 5354 |
| 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. | 2010, SMRU Ltd., SeaGen Strangford Lough, SeaGen Noise Biological Assessment |
| 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. | c2971a12-5381-4297-8bcc-eff5610216d6 |
| Resource Identifier | This is the code assigned by the data owner. | SL_16 |
| 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 | 2010 |
| End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2010 |
| Spatial resolution | This describes the spatial resolution of the dataset or the spatial limitations of the service. | inapplicable |
| 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. | SeaGen produces underwater noise during operation that contains both tonal and broadband components which cover a frequency range similar to the most sensitive hearing range of several marine species. Underwater sound propagation models were used to predict noise levels around SeaGen. Within one kilometre of SeaGen, simple transmission loss models fit the data relatively well; however received levels were found to increase at distances of more than 3km. The source level of SeaGen was back-calculated using the field measurements and the sound propagation models; source level (rms) was estimated to be 174 dB re 1µPa. Although this is lower than some anthropogenic noise sources (e.g. seismic airguns), levels are comparable to a large vessel underway and it is important to highlight that SeaGen produces noise more or less continuously requiring longer exposure times to be taken into account when predicting hearing damage. The potential effects on fish and marine mammals of underwater noise from SeaGen were predicted using current information on hearing abilities and observed responses from previous studies, and are presented as a series of influence zones (e.g. zone of audibility, zone of behavioural responses) around SeaGen. It is important to highlight that predictions of influence zones must be viewed alongside their associated caveats. Specifically, empirical noise data were only available out to 3.5km from SeaGen; predictions of influence zones at ranges greater than this are therefore based solely on transmission loss models and must therefore be treated with caution. This series contains the assessment report. |
| Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | Metadata generated by The Crown Estate for the purpose of publishing on the Marine Data Exchange. |
| Related keywords | ||
| Keyword | General subject area(s) associated with the resource, uses multiple controlled vocabularies | Post-Construction monitoring |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Renewable Energy Lease area | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Cetacean morphology and physiology | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Cetacean behaviour | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Seal morphology and physiology | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Seal behaviour | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Ambient Noise | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | fish | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | epibenthic invertebrates | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Underwater Noise | |
| 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 | Marine Mammals | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Marine Environmental Data and Information Network | |
| Keyword title | MEDIN | |
| Keyword | General subject area(s) associated with the resource, uses multiple controlled vocabularies | Marine Environmental Data and Information Network |
| Keyword title | MEDIN | |
| Geographical coverage | ||
| North | The northern-most limit of the data resource in decimal degrees | 54.40291 |
| East | The eastern-most limit of the data resource in decimal degrees | -5.493281 |
| South | The southern-most limit of the data resource in decimal degrees | 54.306874 |
| West | The western-most limit of the data resource in decimal degrees | -5.613444 |
| 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 | |
| Phone | +44 020 7851 5000 | |
| Delivery point | 16 New Burlington Place | |
| Postal code | W1S 2HX | |
| City | London | |
| Country | United Kingdom | |
| enquiries@thecrownestate.co.uk | ||
| URL | http://www.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 | Marine Current Turbines Limited | |
| Phone | +44 (0)117 926 9906 | |
| Delivery point | St Brandon's House,, 27-29 Great George Street, | |
| Postal code | BS1 5QT | |
| City | Bristol | |
| URL | http://www.marineturbines.com/ | |
| Role | The originator is the person or organisation who created, collected or produced the resource. | originator |
| Organisation name | SMRU Ltd | |
| Phone | 01334 463446 | |
| Delivery point | 5, Atholl Crescent | |
| Postal code | EH3 8EJ | |
| City | Edinburgh | |
| smru@st-andrews.ac.uk | ||
| URL | http://www.smru.st-andrews.ac.uk/ | |
| Resource locators | ||
| Locator URL | Web address (URL) that links to the resource | https://www.marinedataexchange.co.uk/details/1923/summary |
| Web address (URL) that links to the resource | https://www.marinedataexchange.co.uk | |
| Dataset constraints | ||
| 20 Limitations on Public Access - Access constraints | copyright | |
| 20 Limitations on Public Access - Other constraints | This states any limitations on access to the data and uses free text. | http://marinedataexchange.co.uk/pages/terms-of-use. |
| 21 Conditions for Access and Use - Use limitation | 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. | http://marinedataexchange.co.uk/pages/terms-of-use.aspx |
| 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. | http://marinedataexchange.co.uk/pages/terms-of-use.aspx | |
| Available data formats | ||
| Data format | Format in which digital data can be provided for transfer | |
| 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. | 2010-08-06 |
| Harvest date | The date which this record has been (re)harvested from the provider. | 2026-04-12 |
| Metadata date | The date when the content of this metadata record was last updated. | 2015-11-02 |
| Metadata standard name | The name of the metadata standard used to create this metadata | MEDIN Discovery Profile |
| Metadata standard version | The version of the MEDIN Discovery Metadata Standard used to create the metadata record | 2.3.8 |