This marine geophysical survey was carried out by British Geological Survey (BGS) and engineers from Hunting Surveys Ltd, and IOS Barry. The survey took place in August to October 1974 around Shetland, Orkney and off north west Scotland on board the MV Briarthorn. The purpose was to collect data for UK regional mapping. Sea floor data were collected using Transit Sonar. Subsurface data were gathered using a suite of seismic instruments (airgun, pinger and sparker), plus a gravity meter and a magnetometer. These data were recorded as paper records and are archived by BGS. Technical details of the survey are contained in BGS report WB/MG/74/54.
MGU Project 74/04 (GP/MG/74.4). (IGS Report No 54). Navigation: Decca Main Chain and satellite navigation/Loran C/Doppler sonar system. Equipment: Bolt airgun. Sparker ORE pinger/side scan. Transit Sonar MS 47. Magnetometer. S G Brown/Askania GSS3 Gravitymeter system. For more detailed information see the Cruise Report.
unrestricted use, copyright acknowledgement
Geophysical Survey 1974/4: Northern North Sea (06/08/1974 to 23/10/1974)
Airgun/Sleeve Gun, Gravimeter, Magnetometer, Pinger, Sparker, Transit Sonar
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]"
Corer: Rock Gravity, Corer: Vibrocorer, Grab: Shipek
CP2 Regional Sea Boundaries: Atlantic North-West Approaches, Rockall Trough and Faeroe/Shetland Channel, Minches & Western Scotland, Northern North Sea, Scottish Continental Shelf, Western Channel & Celtic Sea, Offshore 1:250k: Bosies Bank, Bressay Bank, Caithness, Cormorant, Devil's Hole, Fair Isle, Farne, Forties, Foula, Haig Fras, Halibut Bank, Judd, Lewis, Marr Bank, Miller, Orkney, Peterhead, Rona, Shetland, Sula Sgeir, Sutherland, Swallow Hole, Offshore 1:500k: Faroe Shetland Basin, North Rockall Basin, SeaVoX Sub-Ocean: CELTIC SEA, INNER SEAS OFF THE WEST COAST OF SCOTLAND, NORTH SEA, NORTHEAST ATLANTIC OCEAN (40W), NORWEGIAN SEA