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Metadata: 2013-2014, Subacoustech, Zone 9 - Celtic Array, Noise Assessment
Abstract:
Subacoustech Environmental Ltd carried out a detailed noise assessment for the proposed Rhiannon Wind Farm (RWF) on behalf of Centrica. This assessment forms Chapter 9 and 11 of the Stage 2 Preliminary Environmental Information (Stage 2 PEI) of the Rhiannon Offshore Wind Farm, which is part of the Environmental Impact Assessment (EIA). Analysis and modelling of underwater noise at various stages of the life-cycle of the developments were considered. For the underwater environment the source of noise relevant to construction and operational life were considered. A combination of bespoke software models and database information – gathered from monitoring at many previous wind farm constructions were used to produce these results. The results were presented using various metrics, capturing both the behavioural and the possible injurious nature of sounds. The results were also presented for the relevant range of fish and marine mammals. From a behavioural perspective each species has been considered separately since the noise will have a different impact on species due to the differing perceptions of noise caused by their differing hearing capabilities. Ranges and areas of influence were given without relationship to actual population distributions. Underwater noise components for the four aspects of the lifecycle of the build: Baseline, pre-construction; Construction phase; and Operational phase were considered. The cumulative effects of noise in terms of how multiple potential sources of noise could be integrated in terms of their environmental impact were considered where possible, as well as the cumulative effects of the influence of nearby wind farms. Also decommissioning was considered briefly, although a further impact assessment will most likely be required nearer the time.
Data holder:
The Crown Estate
| Other details | ||
| Internal code | Internally assigned metadata identifier | 19090 |
| 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. | 2013-2014, Subacoustech, Zone 9 - Celtic Array, Noise Assessment |
| Alternative title | The purpose of alternative title is to record any additional names by which the dataset may be known. | Noise 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. | 3d9ddcfa-af99-4c31-b881-8749abe53e76 |
| Resource Identifier | This is the code assigned by the data owner. | TCE-2676 |
| 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 | 2013-09-10 |
| End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2014-11-21 |
| Spatial resolution | This describes the spatial resolution of the dataset or the spatial limitations of the service. | 3700 |
| Spatial resolution unit | This describes the unit of spatial resolution which for distance must be metres. | urn:ogc:def:uom:EPSG::9001 |
| 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'. | weekly |
| Abstract | The abstract provides a clear and brief statement of the content of the resource. | Subacoustech Environmental Ltd carried out a detailed noise assessment for the proposed Rhiannon Wind Farm (RWF) on behalf of Centrica. This assessment forms Chapter 9 and 11 of the Stage 2 Preliminary Environmental Information (Stage 2 PEI) of the Rhiannon Offshore Wind Farm, which is part of the Environmental Impact Assessment (EIA). Analysis and modelling of underwater noise at various stages of the life-cycle of the developments were considered. For the underwater environment the source of noise relevant to construction and operational life were considered. A combination of bespoke software models and database information – gathered from monitoring at many previous wind farm constructions were used to produce these results. The results were presented using various metrics, capturing both the behavioural and the possible injurious nature of sounds. The results were also presented for the relevant range of fish and marine mammals. From a behavioural perspective each species has been considered separately since the noise will have a different impact on species due to the differing perceptions of noise caused by their differing hearing capabilities. Ranges and areas of influence were given without relationship to actual population distributions. Underwater noise components for the four aspects of the lifecycle of the build: Baseline, pre-construction; Construction phase; and Operational phase were considered. The cumulative effects of noise in terms of how multiple potential sources of noise could be integrated in terms of their environmental impact were considered where possible, as well as the cumulative effects of the influence of nearby wind farms. Also decommissioning was considered briefly, although a further impact assessment will most likely be required nearer the time. |
| Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | The approach to the assessment of noise for the Rhiannon Offshore Windfarm was to use models and computer simulation augmented, where possible, by measurements taken in situ. Details of the approaches were given in detail in subsequent chapters. Here it is sufficient to highlight that the validated models used are able to give two types of output: • The level of noise received at a point given a particular type of construction methodology; • The potential effect of this noise, whether it be behavioural or based on injury for specific species. These calculations were then considered as a bridge to further assessment for the actual effect of noise on local animal distributions. The discussion of details of underwater noise and its measurement and descriptors in Appendix A,. was provided to aid in the assessment and understanding of the results provided in Section 4 of the report . please note that noise, sound and vibration was referred to as ‘noise’ throughout the report. And for the assessments to be made in this report, vibration did not have a long range effect (more than a few hundred metres). The detailed modelling of short range effect (up to one or two thousands of metres) of vibrations travelling through the substrate and affecting bottom dwelling animals, such as crustaceans, were not been considered in detail, primarily due to the paucity of information concerning the effect of vibration on benthic life |
| 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 | Cetacean behaviour | |
| 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 | Fish behaviour | |
| 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 | Zone search area | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Production and industrial facilities | |
| Geographical coverage | ||
| North | The northern-most limit of the data resource in decimal degrees | 53.9755 |
| East | The eastern-most limit of the data resource in decimal degrees | -3.6694 |
| South | The southern-most limit of the data resource in decimal degrees | 53.4913 |
| West | The western-most limit of the data resource in decimal degrees | -5.0537 |
| 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 | Celtic Array | |
| Position name | GIS and Data Manager | |
| info@celticarray.com | ||
| 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 | |
| Position name | Technical Director | |
| tim.mason@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 | Celtic Array | |
| info@celticarray.com | ||
| Resource locators | ||
| Locator URL | Web address (URL) that links to the resource | https://www.marinedataexchange.co.uk/details/TCE-2676/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. | 2014-09-01 |
| 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. | 2026-04-07 |
| 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 |