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
StatusCompleted
Port of departureAmsterdam, Netherlands
Port of returnPlymouth, United Kingdom
PurposeResearch
ObjectivesGeology

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
Measurements 
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