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Metadata: 2004, ABP Mer, Gunfleet Sands 1 and 2, Metocean Assessment
Abstract:
This project details an assessment of wave, tide and seabed mobility to support engineering design requirements of the Gunfleet Sands Offshore Windfarm project. This assessment was carried out by ABPmer. Details are provided which specify conditions related to each of the proposed turbine installation sites This work was based on the best available data resource that includes a combination of site surveys and pre-existing data sets. For this assessment, ABPmer were asked to provide an evaluation of: extreme wave height conditions for 1:50 and 1:100 return periods, peak flow conditions with and without surge influences, and seabed level changes. The outcome of this assessment show that between 1985 and 2001 there have been key changes in the seabed level. Further seabed changes across the sandbank, in general, area likely. It would be prudent to re-survey the area at suitable intervals, and perhaps, initially, prior to construction, to develop further evidence of seabed stability. The outcome of this assessment also shows that the largest extreme waves are consistently predicted to occur along the south-east edge of the development site, with the highest waves generally encountered around turbine 19 (which is also in the general area of Thales South). This assessment also shows that strong winds can enhance tidal flows through wind-driven currents. The strong winds in this area are most likely to enhance this phase of tidal flows.
Data holder:
The Crown Estate
| Other details | ||
| Internal code | Internally assigned metadata identifier | 29864 |
| 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. | 2004, ABP Mer, Gunfleet Sands 1 and 2, Metocean Assessment |
| Alternative title | The purpose of alternative title is to record any additional names by which the dataset may be known. | Metocean 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. | 7978ab93-6723-42cc-954b-1c8538978379 |
| Resource Identifier | This is the code assigned by the data owner. | TCE-522 |
| 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 | 2004-03-01 |
| End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2004-03-01 |
| 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 project details an assessment of wave, tide and seabed mobility to support engineering design requirements of the Gunfleet Sands Offshore Windfarm project. This assessment was carried out by ABPmer. Details are provided which specify conditions related to each of the proposed turbine installation sites This work was based on the best available data resource that includes a combination of site surveys and pre-existing data sets. For this assessment, ABPmer were asked to provide an evaluation of: extreme wave height conditions for 1:50 and 1:100 return periods, peak flow conditions with and without surge influences, and seabed level changes. The outcome of this assessment show that between 1985 and 2001 there have been key changes in the seabed level. Further seabed changes across the sandbank, in general, area likely. It would be prudent to re-survey the area at suitable intervals, and perhaps, initially, prior to construction, to develop further evidence of seabed stability. The outcome of this assessment also shows that the largest extreme waves are consistently predicted to occur along the south-east edge of the development site, with the highest waves generally encountered around turbine 19 (which is also in the general area of Thales South). This assessment also shows that strong winds can enhance tidal flows through wind-driven currents. The strong winds in this area are most likely to enhance this phase of tidal flows. |
| Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | In deep water, the process for estimating extreme waves is fairly simple given a suitable source of local wave observations, since the statistical probability distribution can be derived for the single variable of wave height. In shallow water, and in the case of the Thames Estuary, various influences occur on the wave regime which make the process of estimating extreme waves more complex. First estimations of extreme wave conditions related to the Gunfleet Sands Offshore Windfarm are provided in ABPmer (2002), and include for various offshore conditions up to 1:50 year return periods. Wave modelling has then been used to describe the local wave conditions across the sandbank as the offshore wave moves into shallower water. Since this work was reported, further on-site measurements at Thales North & South have been made which, importantly, extend over winter periods. |
| 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: ABPmer |
| Related keywords | ||
| Keyword | General subject area(s) associated with the resource, uses multiple controlled vocabularies | Other wave statistics |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Wave direction | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Wind stress and shear | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Wave height and period statistics | |
| 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 | Hydrography | |
| 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 | ABP Marine Environmental Research Ltd | |
| Phone | 02380711840 | |
| enquiries@abpmer.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-522/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. | 2026-08-19 |
| Metadata date | The date when the content of this metadata record was last updated. | 2026-08-17 |
| 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 |