abc9f747-5363-0f38-e044-0003ba9b0d98 English dataset British Geological Survey (BGS) +44 (0)131 667 1000 +44 (0)131 668 4140 The Lyell Centre, Research Avenue South Edinburgh EH14 4AP UK enquiries@bgs.ac.uk pointOfContact 2026-03-10 MEDIN Discovery Metadata Standard Version 2.3.5 www.epsg.org 2005 revision urn:ogc:def:crs:EPSG::4326 OGP Rockall Consortium (RCK) Geophysical and Sampling Survey 1998/1_RCK: West Shetland, Northern Rockall Trough, Hatton Bank (28/05/1998 to 17/06/1998) 1998-06-17 publication BGS_CMD_REF280 British Geological Survey This Rockall Consortium marine geophysical and sampling survey took place in May/June 1998 in the area of West Shetland, Northern Rockall Trough and Hatton Bank on board RRS Challenger. Subsurface seismic data were collected with an airgun and sparker. Bathymetry data was collected with a Simrad EA500. Seabed samples were collected with a gravity corer. Technical details of the survey are contained in BGS Report WB/92/42C, https://nora.nerc.ac.uk/id/eprint/529921/. https://mapapps2.bgs.ac.uk/geoindex_offshore/home.html?cruise=1998/1_RCK&. British Geological Survey (BGS) +44 (0)131 667 1000 +44 (0)131 668 4140 The Lyell Centre, Research Avenue South Edinburgh EH14 4AP UK enquiries@bgs.ac.uk custodian Rockall Consortium offshoredata@bgs.ac.uk originator notPlanned NDGO0001 Geology GEMET - INSPIRE themes, version 1.0 2008-06-01 publication soil and sediment crust SeaVoX Vertical Co-ordinate Coverages (L131) 2010-05-18 revision Lithology Bathymetry and Elevation Two-dimensional seismic reflection SeaDataNet Parameter Discovery Vocabulary (P021) 2011-07-27 revision otherRestrictions otherRestrictions otherRestrictions The copyright of materials derived from the British Geological Survey's work is vested in the Natural Environment Research Council [NERC]. No part of this work may be reproduced or transmitted in any form or by any means, or stored in a retrieval system of any nature, without the prior permission of the copyright holder, via the BGS Intellectual Property Rights Manager. Use by customers of information provided by the BGS, is at the customer's own risk. In view of the disparate sources of information at BGS's disposal, including such material donated to BGS, that BGS accepts in good faith as being accurate, the Natural Environment Research Council (NERC) gives no warranty, expressed or implied, as to the quality or accuracy of the information supplied, or to the information's suitability for any use. NERC/BGS accepts no liability whatever in respect of loss, damage, injury or other occurence however caused. 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]" grid 5 English geoscientificInformation BGS Gazetteer 2026-03-10 revision Kennedy BGS Gazetteer 2026-03-10 revision Rosemary Bank BGS Gazetteer 2026-03-10 revision Darwin BGS Gazetteer 2026-03-10 revision Sula Sgeir BGS Gazetteer 2026-03-10 revision Rona BGS Gazetteer 2026-03-10 revision Faroe Bank BGS Gazetteer 2026-03-10 revision Wyville Thomson BGS Gazetteer 2026-03-10 revision Judd BGS Gazetteer 2026-03-10 revision Foula BGS Gazetteer 2026-03-10 revision Flett BGS Gazetteer 2026-03-10 revision Faroe Shetland Basin BGS Gazetteer 2026-03-10 revision North Rockall Basin BGS Gazetteer 2026-03-10 revision North Hatton BGS Gazetteer 2026-03-10 revision Central Hatton Charting Progress 2: Regional Sea Boundaries 2009-06-18 creation Scottish Continental Shelf Charting Progress 2: Regional Sea Boundaries 2009-06-18 creation Atlantic North-West Approaches, Rockall Trough and Faeroe/Shetland Channel The SeaVoX Salt and Fresh Water Body Gazetteer: Sub-Ocean Category 1954-01-01 creation NORTHEAST ATLANTIC OCEAN (40W) -20.0211 -2.4147 57.2211 61.1056 1998-05-28 1998-06-17 British Geological Survey (BGS) +44 (0)131 667 1000 +44 (0)131 668 4140 The Lyell Centre, Research Avenue South Edinburgh EH14 4AP UK enquiries@bgs.ac.uk distributor http://mapapps2.bgs.ac.uk/geoindex_offshore/home.html?cruise=1998/1_RCK WWW:LINK-1.0-http--link BGS Offshore Geoindex GeoIndex allows users to search for information about BGS data collections covering the UK and other areas world wide. Access is free, the interface is easy to use, and it has been developed to enable users to check coverage of different types of data and find out some background information about the data. More detailed information can be obtained by further enquiry through the website. search dataset INSPIRE Implementing rules laying down technical arrangements for the interoperability and harmonisation of unknown theme 2011 publication See the referenced specification false Geophysical equipment types used included: Airgun/Sleeve Gun, Echo Sounder and Sparker. Sample equipment types used included: Corer: Sediment Gravity. The survey was undertaken by Rockall Consortium. NAVIGATION (Positioning System): A VERIPOS DGPS system was used. The system comprised two Sercel NR103 DGPS receivers with corrections from either an HF radio link or via satellite using a link into the vessel's satcom aerial. Data from the NR103 receivers was processed and logged by a Qubit TRAC IV navigation processor/logger. BATHYMETRY: This was a vessel installed Simrad EA500. SEISMIC SYSTEMS: AIRGUN: The source was a cluster array of four 40 cu inch Bolt 600B guns with wave shape kilts, towed at a depth of 2m. For the majority of the time, including all but one line of the survey, two guns were used. The hydrophone was a 30m, two channel Geomechanique, with both channels summed to give a single output. The raw data was recorded and processed using a CODA DA200 system. The processed data were recorded on Exabyte tape. The processes applied included TVG and TVF. SPARKER: The source consisted of an EG&G nine candle sparkarray fitted with multi-tip candles arranged in groups of three, with an energy of 500J available throught each group. For shallower sites 1000J firing through six candles was used, increasing to 1500J through nine candles at deeper sites. The firing rates varied with water depth to obtain the optimum configuration of airgun/sparker. The sparker was given priority for the site surveys, this priority being reversed for the regioanl survey over Hatton Bank. The hydrophone was a 10m, 7 channel Teledyne with a number of channels (normally 6) summed to give optimum output. The raw data was recorded and processed using a CODA DA200 system. The processed data were recorded on Exabyte tape. The processes applied included TVG and TVF. SEDIMENT SAMPLING: A gravity corer with 1 ton weight and 3m core barrel was used to collect sediment samples. For more detailed information see the Report, https://nora.nerc.ac.uk/id/eprint/529921/.