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Metadata: 2002, Hayes-McKenzie Partnership, Gunfleet Sands 1 and 2, Noise Impact Assessment
Abstract:
Hayes-McKenzie Partnership have conducted a comprehensive noise impact assessment in 2002 for the offshore wind farm at Gunfleet Sands, including in-air and in-water assessments. It is anticipated that sound pressure levels underwater during the development stage may be sufficient as to disturb the marine environment. Once the wind farm is operational, as the turbine blades rotate, it is anticipated that vibrations could arise and these would be transmitted down the wind tower and in to the underwater environment. Once again, subsequent noise levels could be sufficient to disturb marine life. The extensive nature of this kind of activity requires that an assessment of the potential impact on the environment be determined. The first stage in determining the scale of any potential impact on the environment is to determine sound pressure levels underwater during the construction and post-commission phases. This project reports on the findings from a number of computer model simulations using frequencies appropriate to both piledriving and wind turbine operations and for this, the underwater acoustic propagation computer program SAFARI has been used. The modelling results show that the sound pressure levels during the piledriving phase are likely to remain above background noise levels over a range of 20km; sound pressure levels during the post-commission stage for most of the frequencies considered in the range 20-2000 Hz are likely to fall below background noise levels at ranges between 200m and 1000m. The exceptions to this are the 400 Hz and 500 Hz components where the SPL is likely to remain above the background noise level at ranges up to 2.5km. Although risks remain numerous and varied, they are generally considered manageable.
Data holder:
The Crown Estate
| Other details | ||
| Internal code | Internally assigned metadata identifier | 18349 |
| 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. | 2002, Hayes-McKenzie Partnership, Gunfleet Sands 1 and 2, Noise Impact Assessment |
| Alternative title | The purpose of alternative title is to record any additional names by which the dataset may be known. | Noise Impact 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. | 176e2ee8-f4df-4b59-81c6-3d238792cb15 |
| Resource Identifier | This is the code assigned by the data owner. | TCE-500 |
| 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 | 2002-10-14 |
| End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2002-10-14 |
| 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. | Hayes-McKenzie Partnership have conducted a comprehensive noise impact assessment in 2002 for the offshore wind farm at Gunfleet Sands, including in-air and in-water assessments. It is anticipated that sound pressure levels underwater during the development stage may be sufficient as to disturb the marine environment. Once the wind farm is operational, as the turbine blades rotate, it is anticipated that vibrations could arise and these would be transmitted down the wind tower and in to the underwater environment. Once again, subsequent noise levels could be sufficient to disturb marine life. The extensive nature of this kind of activity requires that an assessment of the potential impact on the environment be determined. The first stage in determining the scale of any potential impact on the environment is to determine sound pressure levels underwater during the construction and post-commission phases. This project reports on the findings from a number of computer model simulations using frequencies appropriate to both piledriving and wind turbine operations and for this, the underwater acoustic propagation computer program SAFARI has been used. The modelling results show that the sound pressure levels during the piledriving phase are likely to remain above background noise levels over a range of 20km; sound pressure levels during the post-commission stage for most of the frequencies considered in the range 20-2000 Hz are likely to fall below background noise levels at ranges between 200m and 1000m. The exceptions to this are the 400 Hz and 500 Hz components where the SPL is likely to remain above the background noise level at ranges up to 2.5km. Although risks remain numerous and varied, they are generally considered manageable. |
| Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | QinetiQ has been tasked by Hayes-McKenzie Partnership to conduct this study. In order to characterise both the piledriving and wind turbine operations, the computer program SAFARI was run over a number of standard centre frequencies for adjacent 1/3 octave bands from 20 Hz to 2000 Hz. For each frequency, the sound pressure level (SPL) in the water was computed as a function of range and depth for a number of receptor depths. The SPL was subsequently compared with background noise levels. |
| Additional information | This describes relevant references to the data e.g. reports, articles, websites plus other useful information not captured elsewhere. | Presentation type: digital representation of a primarily textual item (can contain illustrations also) Supply media: 002 Origin: QinetiQ |
| 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 | Industrial activity | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Wind strength and direction | |
| 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 | Human health and safety | |
| Geographical coverage | ||
| North | The northern-most limit of the data resource in decimal degrees | 51.752910014735 |
| East | The eastern-most limit of the data resource in decimal degrees | 1.2609909324585 |
| South | The southern-most limit of the data resource in decimal degrees | 51.710526813632 |
| West | The western-most limit of the data resource in decimal degrees | 1.1822141549296 |
| 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 | Orsted | |
| info@orsted.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 | Hayes-McKenzie Partnership | |
| Phone | +44 (0)1722 710 091 | |
| salisbury@hayesmckenzie.co.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 | Orsted | |
| info@orsted.com | ||
| Resource locators | ||
| Locator URL | Web address (URL) that links to the resource | https://www.marinedataexchange.co.uk/details/TCE-500/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 |
| 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 |