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Metadata: 2013, Gardline, Dudgeon, Geophysical Survey
Abstract:
A seabed and sub-seabed survey covering the site was performed in 2007. Based on the acquired survey data the seabed topography and the shallow geology and stratigraphy within the site are interpreted approx. to the first multiple. Some of the interpretation is uncertain due to limited seismic penetration/ resolution. The project decided to execute a new survey campaign in 2013, which was undertaken by Gardline. Its main purpose will be: - To acquire multi-channel seismic data for processing and removal of the multiples to enable a reliable interpretation of the stratigraphy down to (and in) the chalk, - To acquire ultra-high 1channel seismic data to enable strengthening of the existing stratigraphic interpretation of the shallow geology. - To establish a best possible geological model based on the old and new seismic and geotechnical data. - To evaluate possible geohazards like shallow gas or boulder layers within the upper 100 m of sediments, or areas of poor bearing capacity.
Data holder:
The Crown Estate
| Other details | ||
| Internal code | Internally assigned metadata identifier | 19101 |
| 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, Gardline, Dudgeon, Geophysical Survey |
| Alternative title | The purpose of alternative title is to record any additional names by which the dataset may be known. | Geophysical 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. | 3fd6a95a-ed54-451a-ab98-1a2aea768074 |
| Resource Identifier | This is the code assigned by the data owner. | TCE-322 |
| 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 | 2013-04-03 |
| End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2013-04-23 |
| Spatial resolution | This describes the spatial resolution of the dataset or the spatial limitations of the service. | 600 |
| Spatial resolution unit | This describes the unit of spatial resolution which for distance must be metres. | urn:ogc:def:uom:EPSG::9001 |
| 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'. | asNeeded |
| Abstract | The abstract provides a clear and brief statement of the content of the resource. | A seabed and sub-seabed survey covering the site was performed in 2007. Based on the acquired survey data the seabed topography and the shallow geology and stratigraphy within the site are interpreted approx. to the first multiple. Some of the interpretation is uncertain due to limited seismic penetration/ resolution. The project decided to execute a new survey campaign in 2013, which was undertaken by Gardline. Its main purpose will be: - To acquire multi-channel seismic data for processing and removal of the multiples to enable a reliable interpretation of the stratigraphy down to (and in) the chalk, - To acquire ultra-high 1channel seismic data to enable strengthening of the existing stratigraphic interpretation of the shallow geology. - To establish a best possible geological model based on the old and new seismic and geotechnical data. - To evaluate possible geohazards like shallow gas or boulder layers within the upper 100 m of sediments, or areas of poor bearing capacity. |
| Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | The dataset was gridded to create a BASE Surface (Bathymetry Associated with Statistical Error) with different child layers to enable further processing and checking using the Subset function. A BASE surface is a geo-referenced image of a multi-attributed, weighted mean surface. The gridding technique used was a combination of range and swathe angle weighting. The range weight was inversely proportional to the distance from the node (the position of the node was determined during the creation of the fieldsheet): soundings closer to the node were given more weighting. The swathe angle weighting ensured that higher value was given to beams from the inner part of the swathe than to outer beams from adjacent lines. The surface was created using a single resolution of 2m x 2m, which was determined by several factors including; system, water depth, line spacing and data quality. The child layers: mean, shoal, deep, density and standard deviation were reviewed for outstanding noise, artefacts and density, which were then updated and finalised for export. |
| Related keywords | ||
| Keyword | General subject area(s) associated with the resource, uses multiple controlled vocabularies | Sedimentary structure |
| 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 | Depositional environment | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Seismic refraction | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Lithology | |
| 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 | Geotechnics | |
| 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 | Pre-Construction monitoring | |
| 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 | Elevation | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Geology | |
| 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 | 53.2932 |
| East | The eastern-most limit of the data resource in decimal degrees | 1.5303 |
| South | The southern-most limit of the data resource in decimal degrees | 52.6914 |
| West | The western-most limit of the data resource in decimal degrees | 0.8162 |
| 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 | Statoil | |
| Individual name | Erwin Oosterhoff | |
| eoos@statoil.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 | Statoil | |
| Individual name | Erwin Oosterhoff | |
| eoos@statoil.com | ||
| 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 | Dudgeon Offshore Wind Limited | |
| Galloperwindfarm@rwe.com | ||
| Resource locators | ||
| Locator URL | Web address (URL) that links to the resource | https://www.marinedataexchange.co.uk/details/TCE-322/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 |
| Date of last revision | The most recent date that the resource was revised. | 2013-12-01 |
| Date of creation | The date that the resource was created. | 2013-12-01 |
| Harvest date | The date which this record has been (re)harvested from the provider. | 2026-04-12 |
| Metadata date | The date when the content of this metadata record was last updated. | 2026-03-30 |
| 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 |