Geophysical Survey 1980/3: UK central North Sea between 56 and 59 degrees N (07/07/1980 to 07/09/1980)
CP2 Regional Sea Boundaries: Northern North Sea, Offshore 1:250k: Borders, Bosies Bank, Caithness, Cod, Devil's Hole, Dogger, Fair Isle, Farne, Fisher, Fladen, Forties, Marr Bank, Moray-Buchan, Peterhead, Swallow Hole, Tay-Forth, SeaVoX Sub-Ocean: NORTH SEA
Report: Brett, CP. 1980. Cruise report on Project 80/03. A regional geophysical survey in the northern North Sea. (IGS Report No 105)
Positioning: Magnavox satellite navigation system integrated with MX610/MX600 doppler sonar and Arma Brown Mk I Mod 5 gyro compass Decca Mk 21 main chain receiver - optional inegration with the above. Echo sounding: Atlas Deso 10 echo sounder with hull mounted transducers (33 and 210 kHz) and Edig 10 digitiser unit Sonar systems: Kelvin Hughes MS47 transit sonar - hull mounted, port scanning UDI AS350 dual channel side-scan sonar with catamaran tow fish Recording on an EPC 3200 graphic recorder Seismic systems: Edo Western 248 pinger: 3.5 kHz, 10kW transducer in tow-fish assembly. Used with TSS Model 302 swell filter. Recording on EPC 4600 graphic recorder Huntec Deep-tow Boomer: system with remote controlled winch, 2 x Krohn-hite bandpass filters. Huntec ST2 hydrophone. Recording on an EPC 4100 graphic recorder EG&G sparker system: up to 5kJ capability, one 3-element and 1 5-element spark array. Krohn-hite bandpass filter, TSS Model 307 TVG amplifier. EG&G 263C x2 hydrophones with Teledyne 7 channel (10m) in latter part of the survey). Recording on an EPC 4600 graphic recorder Air gun system: Bolt 600B, two guns with standard (1-40cubic inch) range of chamber sizes, Krohn-hite bandpass filter, TSS Model 307 TVG amplifier. Geomecanique 30m hydrophone (also a Geomecanique 50m 3 section hydrophone used with the airgun and water gun). Recording on an EPC4600 graphic recorder. Water gun system: Sodera Mica-T 80 cubic inch gun recording as for the air gun system. Gravitymeter: LaCoste and Romberg S75 air-sea gravity meter. World Wide land gravity meter used for base ties. Magnetometer: Barringer proton magnetometer. For more detailed information see the Cruise Report.
Dead reckoning, Decca Main Chain, Transit satellite
Airgun/Sleeve Gun, Deep Tow Boomer, Echo Sounder, Gravimeter, Magnetometer, Pinger, Sidescan Sonar, Sparker, Transit Sonar, Water Gun
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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]"