Planned maintenance — 18th January 2018 12:00 to 22nd January 2018 09:00 [more]

Cruise inventory

Sperus 12/79

Cruise summary report

Cruise Info. 
Ship name (ship code)Sperus (74TJ)
Cruise identifier12/79
Cruise period1979-05-07 — 1979-06-06
Port of departureAmsterdam, Netherlands
Port of returnPlymouth, United Kingdom

The two legs of this survey were designed to infill the regional coverage obtained in 1978 in the area between 50°10'N - 48°N, 11°W - 7°W and to run a number of lines on the Haig Fras sheet of IGS 1:250,000 map series using shallow seismic profiling, gravity and magnetic methods. In addition, a detailed survey of part of the area was to be run using the Huntec Deep Tow Boomer system.
Chief scientistMichael C Tully (Institute of Geological Sciences, Edinburgh)
Cruise reportSperus 12/79 cruise report sperus12_79.pdf — access key 'C' (6.91 MB) 
Ocean/sea areas 
GeneralEnglish Channel
Celtic Sea
Track chartsSperus 12/79 cruise track — trk2335.html
Geology and geophysics 
Single-beam echosoundingQuantity: track kilometres = 2552
Single channel seismic reflectionQuantity: track kilometres = 2158
Description: format 0 is seismic analogue paper record
Seismic refractionQuantity: track kilometres = 1698.284
Description: sparker.917nm airgun.450nm boomer.Format 0 is seismic analogue paper record
Gravity measurementsQuantity: track kilometres = 2552.056
Magnetic measurementsQuantity: track kilometres = 2552.056