Geophysical Survey 1974/5: Northern North Sea (27/07/1974 to 18/10/1974)
CP2 Regional Sea Boundaries: Atlantic North-West Approaches, Rockall Trough and Faeroe/Shetland Channel, Eastern Channel, Northern North Sea, Scottish Continental Shelf, Offshore 1:250k: Bosies Bank, Bressay Bank, Cormorant, Dungeness-Boulogne, Fair Isle, Fladen, Forties, Halibut Bank, Horne, Orkney, Sedgwick, Viking, Wight, Offshore 1:500k: Faroe Shetland Basin, More Basin, SeaVoX Sub-Ocean: ENGLISH CHANNEL, NORTH SEA, NORTHEAST ATLANTIC OCEAN (40W), NORWEGIAN SEA
This marine geophysical survey was carried out by British Geological Survey (BGS) and engineers from Hunting Surveys Ltd, Sodera and IOS Barry. The survey took place 27 July to 8 August and 5-18 October 1974 in the Northern North Sea on board the MV Briarthorn. The purpose was to collect data to identify trace reflectors and features observed on deep seismic sections from the project area. Sea floor data were collected using Transit Sonar. Subsurface data were gathered using a suite of seismic instruments (airgun, sparker, pinger and watergun), 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/74/53.
Report: Tully, MC, Day, FA, Bacon, M. & Roberts, P. 1974. Cruise Report on northern North Sea survey. MGU Project 74/05 (GP/MG/74.5). (IGS Report No 53). Navigation: Decca Main Chain and satellite navigation/Loran/Doppler sonar system. Equipment: Bolt airgun. EG&G 9 element spark array with Geomecanique hydrophone system. ORE pinger. Transit Sonar MS 47. Sodera water gun. Magnetometer. Gravimeter No information on other equipment. For more detailed information see the Cruise Report.
Airgun/Sleeve Gun, Echo Sounder, Gravimeter, Magnetometer, Pinger, Refraction or Wide-angle Reflection, Sparker, Transit Sonar, Water Gun
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