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Metadata: 2001, Hydrosearch, Gunfleet Sands 1 and 2, Performance Appraisal Report on Geophysical Surveys
Abstract:
This project details the geophysical and environmental investigation surveys carried out at the site of the Gunfleet Sands Offshore Wind Farm. The Gunfleet Sands Offshore wind farm is located in the Outer Thames Estuary. Titan Environmental Surveys Ltd were appointed by Enron Wind Gunfleet Ltd to carry out the surveys. The objectives of the geophysical investigation were to provide accurate seabed and sub-seabed information to assist the engineering design and installation of up to 30 wind turbines located within the survey area. In addition, a 500m wide corridor for the planned power cables associated with the wind farm development was surveyed between a possible landfall at Holland-on-Sea and the survey area. It is concluded that, in spite of the spells of bad weather, the survey programme and objectives were completed successfully. Statistically, for surveys in the September/October period, one should anticipate at least 30% time lost to weather and this in fact proved to be the case. It is difficult to see any way that Titan could have performed the work more quickly.
Data holder:
The Crown Estate
| Other details | ||
| Internal code | Internally assigned metadata identifier | 19434 |
| 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. | 2001, Hydrosearch, Gunfleet Sands 1 and 2, Performance Appraisal Report on Geophysical Surveys |
| Alternative title | The purpose of alternative title is to record any additional names by which the dataset may be known. | Performance Appraisal Report on Geophysical Surveys |
| 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. | c39ba070-188a-45b9-b057-cbb2befd0c21 |
| Resource Identifier | This is the code assigned by the data owner. | TCE-496 |
| 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 | 2001-09-20 |
| End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2001-10-18 |
| 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 the geophysical and environmental investigation surveys carried out at the site of the Gunfleet Sands Offshore Wind Farm. The Gunfleet Sands Offshore wind farm is located in the Outer Thames Estuary. Titan Environmental Surveys Ltd were appointed by Enron Wind Gunfleet Ltd to carry out the surveys. The objectives of the geophysical investigation were to provide accurate seabed and sub-seabed information to assist the engineering design and installation of up to 30 wind turbines located within the survey area. In addition, a 500m wide corridor for the planned power cables associated with the wind farm development was surveyed between a possible landfall at Holland-on-Sea and the survey area. It is concluded that, in spite of the spells of bad weather, the survey programme and objectives were completed successfully. Statistically, for surveys in the September/October period, one should anticipate at least 30% time lost to weather and this in fact proved to be the case. It is difficult to see any way that Titan could have performed the work more quickly. |
| Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | Primary navigation employed Trimble 4400 DGPS in RTK mode with a secondary system being provided by Trimble AG132 with GLA differential corrections. A base station was established at a control point on Clacton pier for the duration of the survey. Titan’s survey report will detail fully the pre-and post-survey calibrations undertaken. DGPS positioning provided a better than 3m accuracy throughout the survey area and a minimum of 5 satellites with acceptable geometrical constraints were always available. The onboard navigation system employed Trimble HYDRO Pro software for recording of positional data. Data was annotated with fix and event marks for all the survey recorders with data stored to disc and output as hardcopy record. To monitor positioning quality a range of QC positioning parameters were available on-line. |
| Additional information | This describes relevant references to the data e.g. reports, articles, websites plus other useful information not captured elsewhere. | Geophysical data shall only be downloadable with prior permission of DONG Energy Presentation type: digital representation of a primarily textual item (can contain illustrations also) Supply media: 002 Origin: Titan Environmental Surveys Ltd |
| Related keywords | ||
| Keyword | General subject area(s) associated with the resource, uses multiple controlled vocabularies | Seismic reflection |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Side-scan sonar | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Magnetics | |
| 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 | 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 | Offshore Cable Corridor | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Elevation | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Oceanographic geographical features | |
| 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 | Hydrosearch Associates Limited | |
| info@hydroseach.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-496/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 |