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Metadata: 2007 Shell UK Exploration and Production Ltd GAD07 Environmental Survey. Gannet Field. UKCS Blocks 21/25, 21/30, 22/21 and 22/26a
Abstract:
Environmental Survey. Gannet Field. UKCS Blocks 21/25, 21/30, 22/21 and 22/26a
Data holder:
Data Archive for Seabed Species and Habitats (DASSH)
Click on the red button for resource contact details:
- Click on the red button for resource contact details
Use constraints:
Released under DASSH terms and conditions https://www.dassh.ac.uk/terms-and-conditions
Other details | ||
Internal code | Internally assigned metadata identifier | 5303 |
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. | 2007 Shell UK Exploration and Production Ltd GAD07 Environmental Survey. Gannet Field. UKCS Blocks 21/25, 21/30, 22/21 and 22/26a |
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. | d672a4a631e99e48553b61560119bcf9 |
Resource Identifier | This is the code assigned by the data owner. | UK00A_GAD07 |
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. | dataset |
Start date | This describes the date the resource starts. This may only be the year if month and day are not known | 2007-06-01 |
End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2007-06-30 |
Spatial resolution | This describes the spatial resolution of the dataset or the spatial limitations of the service. | 200 |
Spatial resolution unit | This describes the unit of spatial resolution which for distance must be metres. | http://standards.iso.org/ittf/PubliclyAvailableStandards/ISO_19139_Schemas/resources/uom/gmxUom.xml#m |
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'. | unknown |
Abstract | The abstract provides a clear and brief statement of the content of the resource. | Environmental Survey. Gannet Field. UKCS Blocks 21/25, 21/30, 22/21 and 22/26a |
Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | Environmental Survey. Gannet Field. UKCS Blocks 21/25, 21/30, 22/21 and 22/26a FROM REPORT SUMMARY OF SURVEY RESULTS Location All coordinates in this report are based on the International Spheroid 1924, European Datum 1950. Grid coordinates are on the Universal Transverse Mercator Projection, Central Meridian 0. Study Area: In June 2007, Fugro Survey Limited (FSLTD) were subcontracted by Fugro Rovtech Limited to performed environmental survey in the Gannet field, in the Central North Sea, UKCS blocks 21/25, 21/30, 22/21 and 22/26a. The field consists of a cluster of seven oil and gas fields (namely Gannet A, B, C, D, E, F and G). The survey was performed in order to investigate the effects of existing development in the area and to establish a baseline for future development. Bathymetry: Tidally uncorrected single beam echosounder spot depths recorded at sampling locations during the current study ranged from 93 m to 100 m, indicating an essentially flat seabed within the survey area. Seabed Features: Full seabed features information was not available for the survey area. However, a previous geophysical survey for a pipeline route from Bittern to Gannet A in the centre of the Gannet field (Fugro Geoteam Limited report number M2032.11, Shell Expro report number P97-146 / 31) found surficial sediments along the route to comprise fine to coarse, occasionally clayey and / or silty sand. Environmental Survey Strategy: A total of 38 stations were sampled using a 0.1 m2 Day grab with one or three physicochemical replicates retained for analysis and three macrofaunal replicates obtained at 21 of the 38 stations. Seabed photography was undertaken at the required locations for groundtruthing purposes. Granulometry: The sediments were similar across the survey area ranging from poorly to very poorly sorted, fine to very fine sand, with the exception of station D4, which was classified as very poorly sorted medium silt. Mean phi ranged from 2.52 to 3.69 (station C9 and C4, respectively), while station D4 showed a mean phi of 5.27. The sorting coefficient ranged from 1.03 (stations D6 and Ref2) to 2.19 (station D4). In general variation in the particle size composition of sediments within the survey area appeared to relate to the proximity to the historic well locations. Drill cuttings were observed in many of the samples located adjacent to the historic well locations i.e. A3, A4, C4 and D2 to D5. Comparison of granulometry data with 1990 survey data showed that levels of fines appeared to have increased across the entire survey, although this is probably due to a change in methodology (the current survey utilised wet sieving techniques followed by laser diffraction). However, it was considered significant that the areas adjacent to the historic well locations showed a disproportionate increase in fines, presumed to be due to the presence of drill cuttings, which were not present in the 1990 baseline survey. Organic Carbon: TOM for the majority of sediments from the survey area ranged from 1.2% to 2.9% (stations A10 and C2, respectively). Substantially higher levels of loss on ignition were recorded for stations adjacent to historic well locations i.e. D4 and C4, at 4.6% including station A3 at 4.0%. Several other stations showed elevated levels of TOM, between approximately 2.3% and 2.9%, reflecting their proximity to areas of drilling activity (stations A1, C5, D2, D3, D5, C2, C7 and C8). |
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 | Habitats and biotopes | |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | Human health and safety | |
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 | Species distribution | |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | Macroalgae generic abundance in water bodies | |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | Zoobenthos generic abundance | |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | Industrial discharges | |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | Habitat extent | |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | Habitat characterisation | |
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 | Habitats and biotopes | |
Geographical coverage | ||
North | The northern-most limit of the data resource in decimal degrees | 58.7112 |
East | The eastern-most limit of the data resource in decimal degrees | 2.9004 |
South | The southern-most limit of the data resource in decimal degrees | 55.9492 |
West | The western-most limit of the data resource in decimal degrees | -2.5049 |
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 | Data Archive for Seabed Species and Habitats (DASSH) | |
Position name | Data Manager | |
Phone | 01752 633102 | |
Fax | 01752 633291 | |
Delivery point | Marine Biological Association of the UK, The Laboratory, Citadel Hill | |
Postal code | PL1 2PB | |
City | Plymouth | |
Role | The distributor is the person or organisation that distributes the resource. | distributor |
Organisation name | Data Archive for Seabed Species and Habitats (DASSH) | |
Position name | Data Manager | |
Phone | 01752 633102 | |
Fax | 01752 633291 | |
Delivery point | Marine Biological Association of the UK, The Laboratory, Citadel Hill | |
Postal code | PL1 2PB | |
City | Plymouth | |
Role | The originator is the person or organisation who created, collected or produced the resource. | originator |
Organisation name | Oil and Gas UK | |
Individual name | Mick Borwell | |
Position name | Environmental Issues Director | |
Phone | +44 (0)20 7802 2400 | |
Fax | +44 (0)20 7802 2401 | |
Delivery point | 2nd Floor 232-242 Vauxhall Bridge Road | |
Postal code | SW1V 1AU | |
City | London | |
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 | Data Archive for Seabed Species and Habitats (DASSH) | |
Position name | Data Manager | |
Phone | 01752 633102 | |
Fax | 01752 633291 | |
Delivery point | Marine Biological Association of the UK, The Laboratory, Citadel Hill | |
Postal code | PL1 2PB | |
City | Plymouth | |
Dataset constraints | ||
20 Limitations on Public Access - Access constraints | otherRestrictions | |
20 Limitations on Public Access - Other constraints | This states any limitations on access to the data and uses free text. | Released under DASSH terms and conditions https://www.dassh.ac.uk/terms-and-conditions |
21 Conditions for Access and Use - Use limitation | 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. | Released under DASSH terms and conditions |
Available data formats | ||
Data format | Format in which digital data can be provided for transfer | Database |
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. | 2007-06-30 |
Date of last revision | The most recent date that the resource was revised. | 2007-06-30 |
Date of creation | The date that the resource was created. | 2007-06-01 |
Harvest date | The date which this record has been (re)harvested from the provider. | 2024-04-21 |
Metadata date | The date when the content of this metadata record was last updated. | 2019-08-12 |
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 | 2.3.8 |
Metadata parent | c25edeeb492d845621e3db3d997fc7e9 |