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Metadata: 2012, PLA Hydrographic Service, Gunfleet Sands 1 and 2, Export Cable And Substation Inspection Surveys (Spring 2012)
Abstract:
The Port of London Authority (PLA) Hydrographic Service was commissioned by DONG Energy to undertake repeat Multibeam Echosounder (MBES) and Side Scan Sonar (SSS) surveys at the Gunfleet Sands Offshore Windfarm in the Thames Estuary. Previous surveys have been conducted at 6 monthly intervals from September 2010. The surveys are required for the FEPA Licence Numbers: Gunfleet Sands I & II (GF1L/2011/0064/9 & GF2 L/2011/00065/3) Offshore Windfarm. The scope of work, for the March 2012 survey, was as undertaken in 2010 which included: 1. MBES and SSS survey of 100m wide corridor along Export Cable Route between the windfarm substation and landfall site, to the east of Clacton-on-Sea. 2. For 2011, a requirement for additional works and analysis identified by DONG Energy, namely: - difference surface along export line, and comments on wider area geomorphology and bathymetric changes. 3. For August 2011 the scour around the substation was assessed and compared against previous surveys. 4. For March 2012 there was a requirement to delineate the full extent of scour from the substation. This series covers survey elements which were undertaken on the 23rd and 24th March 2012 along the Export Cable Route and around the substation. The survey work was carried out using the PLA survey vessel ‘Yantlet’, with bathymetric data being collected using a hull-mounted Reson SeaBat 8125h MBES and SSS extracted from the bathymetric data in the form of snippets and backscatter.
Data holder:
The Crown Estate
| Other details | ||
| Internal code | Internally assigned metadata identifier | 27469 |
| 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. | 2012, PLA Hydrographic Service, Gunfleet Sands 1 and 2, Export Cable And Substation Inspection Surveys (Spring 2012) |
| Alternative title | The purpose of alternative title is to record any additional names by which the dataset may be known. | Export Cable And Substation Inspection Survey |
| 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. | c546b2ce-11f0-4ec6-8510-96fef690ae71 |
| Resource Identifier | This is the code assigned by the data owner. | TCE-543 |
| 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 | 2012-03-23 |
| End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2012-03-24 |
| 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. | The Port of London Authority (PLA) Hydrographic Service was commissioned by DONG Energy to undertake repeat Multibeam Echosounder (MBES) and Side Scan Sonar (SSS) surveys at the Gunfleet Sands Offshore Windfarm in the Thames Estuary. Previous surveys have been conducted at 6 monthly intervals from September 2010. The surveys are required for the FEPA Licence Numbers: Gunfleet Sands I & II (GF1L/2011/0064/9 & GF2 L/2011/00065/3) Offshore Windfarm. The scope of work, for the March 2012 survey, was as undertaken in 2010 which included: 1. MBES and SSS survey of 100m wide corridor along Export Cable Route between the windfarm substation and landfall site, to the east of Clacton-on-Sea. 2. For 2011, a requirement for additional works and analysis identified by DONG Energy, namely: - difference surface along export line, and comments on wider area geomorphology and bathymetric changes. 3. For August 2011 the scour around the substation was assessed and compared against previous surveys. 4. For March 2012 there was a requirement to delineate the full extent of scour from the substation. This series covers survey elements which were undertaken on the 23rd and 24th March 2012 along the Export Cable Route and around the substation. The survey work was carried out using the PLA survey vessel ‘Yantlet’, with bathymetric data being collected using a hull-mounted Reson SeaBat 8125h MBES and SSS extracted from the bathymetric data in the form of snippets and backscatter. |
| Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | This survey represents DONG Deliverable 717a. PLA’s MCA certified dedicated survey vessel, Yantlet, was used throughout the duration of the project for MBES work (Figure 2). The equipment on the PLA’s vessel is permanently fitted and regular calibrations of equipment are undertaken, including daily field checks. The PLA is ISO 9002 and 14001 certified and all QC documentation are held and available for review. Bathymetric sounding data is generated to IHO S44 Special Order level. |
| Related keywords | ||
| Keyword | General subject area(s) associated with the resource, uses multiple controlled vocabularies | Bathymetry and Elevation |
| 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 | Offshore Cable Corridor | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Elevation | |
| Geographical coverage | ||
| North | The northern-most limit of the data resource in decimal degrees | 52.5 |
| East | The eastern-most limit of the data resource in decimal degrees | 2 |
| South | The southern-most limit of the data resource in decimal degrees | 51 |
| West | The western-most limit of the data resource in decimal degrees | 1 |
| 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 | DONG Energy Power (UK) Ltd | |
| Position name | Data Manager | |
| receplon@dongenergy.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 | 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 | Port of London Authority Hydrographic Service | |
| Phone | +44 (0) 1474 562206 | |
| hydrographic@pla.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 | DONG Energy Power (UK) Ltd | |
| receplon@dongenergy.co.uk | ||
| Resource locators | ||
| Locator URL | Web address (URL) that links to the resource | https://www.marinedataexchange.co.uk/details/TCE-543/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. | 2026-04-22 |
| Metadata date | The date when the content of this metadata record was last updated. | 2026-04-21 |
| 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 |