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Metadata: British Geological Survey (BGS) Geophysical and Multibeam Survey 2006/2: North West Scotland, CD180 (20/May/2006 to 09/Jun/2006)
Abstract:
This British Geological Survey (BGS) marine geophysical and multibeam survey took place in May/June 2006 in the Rockall-Hatton-Faeroes region west of Scotland on board the RRS Charles Darwin. The purpose was to define the size and shape of the basalt window, identify and/or contrain compressional folds/faults/thrusts and to investigate the siesmo-stratigraphy of the Faeroe-Bank Channel to identify potential borehole locations. Additional seismic reflection data were run south of St Kilda and Stanton Bank. Subsurface seismic data were collected using an airgun, sparker and pinger. Seafloor bathymetry data were collected using a Simrad EM12 multibeam system and magnetic and gravity data were also collected. All data were recorded digitally. These data are archived by BGS. Technical details of the survey are contained in BGS Internal Report IR/06/076 (http://nora.nerc.ac.uk/id/eprint/7301/) and Report on a survey over Stanton Bank 4 for MESH, June 2006 (http://nora.nerc.ac.uk/id/eprint/7422). A preliminary overview and interpretations of data gathered are contained in Geological Summary Report CR/06/190 (http://nora.nerc.ac.uk/id/eprint/507380/). GeoIndex Offshore - https://mapapps2.bgs.ac.uk/geoindex_offshore/home.html?cruise=2006/2&.
Data holder:
British Geological Survey (BGS)
| Other details | ||
| Internal code | Internally assigned metadata identifier | 6766 |
| 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. | British Geological Survey (BGS) Geophysical and Multibeam Survey 2006/2: North West Scotland, CD180 (20/May/2006 to 09/Jun/2006) |
| Alternative title | The purpose of alternative title is to record any additional names by which the dataset may be known. | CD180, Stanton Bank |
| 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. | abc9f747-5346-0f38-e044-0003ba9b0d98 |
| Resource Identifier | This is the code assigned by the data owner. | BGS_CMD_REF315 |
| 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 | 2006-05-20 |
| End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2006-06-09 |
| Spatial resolution | This describes the spatial resolution of the dataset or the spatial limitations of the service. | 5 |
| 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'. | notPlanned |
| Abstract | The abstract provides a clear and brief statement of the content of the resource. | This British Geological Survey (BGS) marine geophysical and multibeam survey took place in May/June 2006 in the Rockall-Hatton-Faeroes region west of Scotland on board the RRS Charles Darwin. The purpose was to define the size and shape of the basalt window, identify and/or contrain compressional folds/faults/thrusts and to investigate the siesmo-stratigraphy of the Faeroe-Bank Channel to identify potential borehole locations. Additional seismic reflection data were run south of St Kilda and Stanton Bank. Subsurface seismic data were collected using an airgun, sparker and pinger. Seafloor bathymetry data were collected using a Simrad EM12 multibeam system and magnetic and gravity data were also collected. All data were recorded digitally. These data are archived by BGS. Technical details of the survey are contained in BGS Internal Report IR/06/076 (http://nora.nerc.ac.uk/id/eprint/7301/) and Report on a survey over Stanton Bank 4 for MESH, June 2006 (http://nora.nerc.ac.uk/id/eprint/7422). A preliminary overview and interpretations of data gathered are contained in Geological Summary Report CR/06/190 (http://nora.nerc.ac.uk/id/eprint/507380/). GeoIndex Offshore - https://mapapps2.bgs.ac.uk/geoindex_offshore/home.html?cruise=2006/2&. |
| Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | Geophysical equipment types used included: Airgun/Sleeve Gun, Echo Sounder, Gravimeter, Magnetometer, Pinger and Sparker. The survey was undertaken by British Geological Survey. NAVIGATION: vessels Trimble DGPS system, WGS84. AIRGUN: Source: An array of 5 x 40 cu inch Bolt 600B airguns with waveshape kits and time break solenoids. Hydrophone (receiver): A 4 channel SIG hydrophone summed to give a single channel 32m active length. Recording: The BGS CODA DA200, software version 3.9.11.5L(3360) 2005 four-channel digital recording and processing system was utilised to record the raw data. The data were recorded to Flipdisks in CODA format with a sampling frequency of 3kHz, record length of 4 seconds and bandpass filter of 25-800 Hz. The start of recording was delayed in deep water to permit a minimum of 2 seconds of data below the sea-bed. The CODA system also received a navigation data string from the vessels Trimble DGPS system, and logged position, time and date for each shot. On line processing: the CODA system was also used to process the data on-line and produce a real time hard copy output on an Ultra 120 thermal printer. Processes applied were time varied gain (TVG), time varied filtering (TVF) and trace mixing and, in extremely large amplitude sea swell situations, a swell filter. Both TVG and TVF were applied from the sea-bed, which was tracked automatically. A 1.5 sec record length was used for the on-line hard copy, with a delay adjusted to give an optimum record for the water depth. SPARKER: Source: EG&G, nine candle, multi-tip sparkarray with 135 tips. High Voltage Power Supply: An Applied Acoustic Engineering CSP2200 capacitor charging unit. This is a single unit, powered from the ship’s 240VAC supply incorporating switchable output energy up to a maximum of 2200 J. Apart from lines 2-5 (1800J) the whole survey was conducted at an output of 2200 J. Hydrophone (receiver): A seven channel Teledyne 10m hydrophone, summing on the most part, all channels to give a single output. Recording: same system as the airgun, the data were recorded with a sampling frequency of 5kHz, record length of 1.9 seconds and a bandpass filter of 100-1730 Hz. The start of recording was delayed in deep water to permit a minimum of 1 second of data below the seabed. On-line processing: The sparker data was processed on line for QA purposes of the recorded data. Processes applied were time varied gain (TVG), time varied filtering (TVF), swell filter (occasionally), and trace mixing. GRAVITY METER: ZLS Corporation UltraSys controlled LaCoste and Romberg sensor serial No. S75 system. MAGNETOMETER: Barringer proton precession magnetometer with a 1 gamma sensitivity. The sensor was towed 200 m astern to minimise the effects of the vessel’s steel hull on the local magnetic field. MULTIBEAM: Simrad EM12 multibeam system. Several sound velocity profiles were made throughout the survey, Rockall Bank, before the start of line 12 and the Faroe Bank Channel. It was noted that the Faroe Bank Channel had fresh water close to the seabed. Calibration issue during survey. Backscatter file type: TIF. PINGER: 3.5kHz pinger is a transducer mounted in a tow fish and was towed over the starboard side. This was controlled by an IOS transceiver with the data recorded on a CodaOctopus360 acquisition system and was part of the standard shipboard equipment. PRECISION ECHOSOUNDER: 10kHz IOS transducer mounted in a tow fish and deployed off the port side close to amidships. This is controlled by a Simrad EA500 transceiver and display and was compensated for fish height with the depth recorded centrally. For more detailed information on the acquisition equipment and data collection techniques, operational standards, data processing methods and quality control procedures used on this survey see the Report of Survey/Cruise Report and associated documentation where available. The information available may vary depending on the age of the survey. Data are checked and loaded to the BGS Coastal and Marine data management system following BGS marine data management procedures. |
| Related keywords | ||
| Keyword | General subject area(s) associated with the resource, uses multiple controlled vocabularies | NDGO0001 |
| Keyword title | NERC OAI Harvesting | |
| Keyword | General subject area(s) associated with the resource, uses multiple controlled vocabularies | Geology |
| Keyword title | Geology | |
| Keyword | General subject area(s) associated with the resource, uses multiple controlled vocabularies | soil and sediment |
| Keyword title | soil and sediment | |
| Keyword | General subject area(s) associated with the resource, uses multiple controlled vocabularies | crust |
| Keyword title | crust | |
| Keyword | General subject area(s) associated with the resource, uses multiple controlled vocabularies | Gravity |
| Keyword title | Gravity | |
| Keyword | General subject area(s) associated with the resource, uses multiple controlled vocabularies | Bathymetry and Elevation |
| Keyword title | Bathymetry and Elevation | |
| Keyword | General subject area(s) associated with the resource, uses multiple controlled vocabularies | Magnetics |
| Keyword title | Magnetics | |
| Keyword | General subject area(s) associated with the resource, uses multiple controlled vocabularies | Two-dimensional seismic reflection |
| Keyword title | Two-dimensional seismic reflection | |
| Geographical coverage | ||
| North | The northern-most limit of the data resource in decimal degrees | 61.8221 |
| East | The eastern-most limit of the data resource in decimal degrees | -7.054 |
| South | The southern-most limit of the data resource in decimal degrees | 55.9599 |
| West | The western-most limit of the data resource in decimal degrees | -18.5336 |
| Regional sea | Malin | |
| North Rockall Basin | ||
| North Hatton | ||
| Munken | ||
| Bill Bailey's Bank | ||
| Rosemary Bank | ||
| Central Rockall Basin | ||
| Central Hatton | ||
| Atlantic North-West Approaches, Rockall Trough and Faeroe/Shetland Channel | ||
| St Kilda | ||
| Wyville Thomson | ||
| Minches & Western Scotland | ||
| Lousy Bank | ||
| Faroe Bank | ||
| Peach | ||
| Darwin | ||
| Rockall Island | ||
| Tiree | ||
| Scottish Continental Shelf | ||
| INNER SEAS OFF THE WEST COAST OF SCOTLAND | ||
| NORTHEAST ATLANTIC OCEAN (40W) | ||
| 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 | British Geological Survey (BGS) | |
| Phone | +44 (0)131 667 1000 | |
| Fax | +44 (0)131 668 4140 | |
| Delivery point | The Lyell Centre, Research Avenue South | |
| Postal code | EH14 4AP | |
| City | Edinburgh | |
| Country | UK | |
| enquiries@bgs.ac.uk | ||
| Role | The distributor is the person or organisation that distributes the resource. | distributor |
| Organisation name | British Geological Survey (BGS) | |
| Phone | +44 (0)131 667 1000 | |
| Fax | +44 (0)131 668 4140 | |
| Delivery point | The Lyell Centre, Research Avenue South | |
| Postal code | EH14 4AP | |
| City | Edinburgh | |
| Country | UK | |
| enquiries@bgs.ac.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 | British Geological Survey (BGS) | |
| Phone | +44 (0)131 667 1000 | |
| Fax | +44 (0)131 668 4140 | |
| Delivery point | The Lyell Centre, Research Avenue South | |
| Postal code | EH14 4AP | |
| City | Edinburgh | |
| Country | UK | |
| enquiries@bgs.ac.uk | ||
| Role | The originator is the person or organisation who created, collected or produced the resource. | originator |
| Organisation name | British Geological Survey (BGS) | |
| Phone | +44 (0)131 667 1000 | |
| Fax | +44 (0)131 668 4140 | |
| Delivery point | The Lyell Centre, Research Avenue South | |
| Postal code | EH14 4AP | |
| City | Edinburgh | |
| Country | UK | |
| offshoredata@bgs.ac.uk | ||
| Resource locators | ||
| Locator URL | Web address (URL) that links to the resource | http://mapapps2.bgs.ac.uk/geoindex_offshore/home.html?cruise=2006/2 |
| Locator name | Name of the web resource | BGS Offshore Geoindex |
| Locator function | Code that describes the function of the resource. ISO function code chosen from ISO 19115-1 Codelist | search |
| Dataset constraints | ||
| 20 Limitations on Public Access - Access constraints | otherRestrictions | |
| 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. | unrestricted use, copyright acknowledgement - Available under the Open Government Licence subject to the following acknowledgement accompanying the reproduced British Geological Survey materials "Contains British Geological Survey materials ©UKRI [year]" |
| 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. | 2006-06-09 |
| Harvest date | The date which this record has been (re)harvested from the provider. | 2026-04-19 |
| Metadata date | The date when the content of this metadata record was last updated. | 2026-04-17 |
| 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 | Version 2.3.5 |