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This series contains a selection of reports and graphics detailing the airborne noise modelling surveys and monitoring proposals developed for Atlantic Array Offshore Windfarm. Included are the three relevent annexs from the Environmental Statement providing, first, a discussion of airborne noise propagation in offshore environments and the models used in the assessment of piling and operational noise for the Atlantic Array offshore wind farm project, second, calculations of the prediction of piling noise effects associated with the construction of the Atlantic Array Offshore Wind Farm for 5 and 8 MW turbine layouts and, third, calculations of the prediction of operational noise effects associated with the operation of the Atlantic Array Offshore Wind Farm for which two layouts are considered, 240 x 5 MW wind turbine generators (WTGs) and 150 x 8 MW WTGs. In addition there is an internal RWE report on likely monitoring positions for assessing the impact of construction noise of the electrical substation and the Atlantic Array. Some of these positions were to be used as possible monitoring locations for operation noise of the Atlantic Array.
RWE Npower Renewables Limited
Reports and conclusions are in public domain as a part of the Atlantic Array Environmental Statement. Access to datasets can be negotiated.
| Other details | ||
| Internal code | Internally assigned metadata identifier | 7118 |
| 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, RPS, Zone 8 - Bristol Channel Atlantic Array, Airborne Noise and Vibration Studies |
| 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. | 74aaabd9fee12b1ff8d2feaf46948d6a |
| Resource Identifier | This is the code assigned by the data owner. | AA_Airborne_noise_and_Vibration |
| 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 | 2010-09-08 |
| End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2013-05-31 |
| 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. | This series contains a selection of reports and graphics detailing the airborne noise modelling surveys and monitoring proposals developed for Atlantic Array Offshore Windfarm. Included are the three relevent annexs from the Environmental Statement providing, first, a discussion of airborne noise propagation in offshore environments and the models used in the assessment of piling and operational noise for the Atlantic Array offshore wind farm project, second, calculations of the prediction of piling noise effects associated with the construction of the Atlantic Array Offshore Wind Farm for 5 and 8 MW turbine layouts and, third, calculations of the prediction of operational noise effects associated with the operation of the Atlantic Array Offshore Wind Farm for which two layouts are considered, 240 x 5 MW wind turbine generators (WTGs) and 150 x 8 MW WTGs. In addition there is an internal RWE report on likely monitoring positions for assessing the impact of construction noise of the electrical substation and the Atlantic Array. Some of these positions were to be used as possible monitoring locations for operation noise of the Atlantic Array. |
| Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | Considering the propagation models suggested by the literature and the evidence, the noise assessments have been undertaken using the same parameters as ISO 9613-2 but with cylindrical spreading starting at 2000 m beyond, with atmospheric absorption coefficient (Aatm) calculated for temperature of 10 degrees and relative humidity 70percent as per ISO 9613-2 to reflect the findings of Hubbard and Shepherd (1999) and the Nord2000 method. Evidence of Low Level Jets in the UK, as regards their prevalence, height and therefore choice of 2000 m break point for cylindrical spreading is provided. The exact type of hammer and pile are not known, however data have been sourced to best give an indication as to the source power levels. One hammer provider, Menck (1986), have provided acoustic details. These were from measurements made whilst piling in the Baltic sea in 1986. - Details were given for a Menck MHU 2100 kNm hammer, taken to be equivalent to 2100 kJ - Pile depth was to 60 m, as in agreement with the Atlantic Array, and - Pile outer diameter was 2.13 m. It is noted that this is smaller than that of the Atlantic Array. Measurements reported were taken using a Bruel and Kjaer 2260 set to Impulse timeweighting (taken to have an integration time of 35 ms). Sound Pressure Levels reported were 105 - 107 dB LAp,I at 10 - 20 m. This assessment has been based upon a source level of 106 dB LAp,I at 15 m. It should be noted when considering these results that they are, in terms of source location, worst case and also that as activities move away from receptor locations, noise levels will fall. |
| Related keywords | ||
| Keyword | General subject area(s) associated with the resource, uses multiple controlled vocabularies | Marine Environmental Data and Information Network |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Buildings | |
| 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 | Engineering parameters | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Man-made structures | |
| 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 | 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 | Noise | |
| Geographical coverage | ||
| North | The northern-most limit of the data resource in decimal degrees | 51.8699 |
| East | The eastern-most limit of the data resource in decimal degrees | -2.4241 |
| South | The southern-most limit of the data resource in decimal degrees | 50.1423 |
| West | The western-most limit of the data resource in decimal degrees | -6.2795 |
| Regional sea | Bristol Channel | |
| atmosphere | ||
| 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 | RWE Npower Renewables Limited | |
| Individual name | Nick Wood | |
| Role | The originator is the person or organisation who created, collected or produced the resource. | originator |
| Organisation name | RPS Group | |
| Position name | Technical Reviewer | |
| 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 | RWE Npower Renewables Limited | |
| Position name | Offshore Windfarm Lease Round 3 Zone 8 Developers | |
| Dataset constraints | ||
| Limitations on public access | Any restrictions imposed on accessing the resource such as the need to agree to certain licence conditions. | Access to data can be negotiated with RWE Innogy's Offshore Wind Project's team |
| Access constraints (code) | ISO restriction code chosen from ISO 19115-1 Codelist | otherRestrictions |
| Use constraints (code) | ISO restriction name chosen from ISO 19115-1 Codelist | otherRestrictions |
| Use constraints | Any restriction on the use of the resource such as the need to agree to certain licence conditions. | Reports and conclusions are in public domain as a part of the Atlantic Array Environmental Statement. Access to datasets can be negotiated. |
| Available data formats | ||
| Data format | Format in which digital data can be provided for transfer | Documents |
| 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. | 2013-05-31 |
| Metadata date | The date when the content of this metadata record was last updated. | 2014-01-16 |
| Metadata standard name | The name of the metadata standard used to create this metadata | MEDIN Discovery metadata standard |
| Metadata standard version | The version of the MEDIN Discovery Metadata Standard used to create the metadata record | 2.3.7 |
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