Cruise inventory

Sperus 2/77 Leg 3

Cruise summary report

Cruise Info. 
Ship name (ship code)Sperus (74TJ)
Cruise identifier2/77 Leg 3
Cruise period1977-05-04 — 1977-05-17
Port of departureNewcastle, United Kingdom
Port of returnLeith, United Kingdom
ObjectivesGravity survey: Area A.

Gravimeter, magentometer, echo-sounder and pinger
Effort concentrated on monitoring of the two gravity systems (S75 and Askania).
4 N-S lines were run acorss the Silver Pit gravity range.
A 70km surface meter gravity range established at the entrance to the Firth of Forth.
Chief scientistA Dobinson (Institute of Geological Sciences, Edinburgh)
Cruise reportSperus 2/77 Leg 3 cruise report sperus2_77.pdf — access key 'C' (14.75 MB) 
Ocean/sea areas 
GeneralNorth Sea
SpecificNorth Sea
Track chartsSperus 2/77 Leg 3 cruise track — sperus2_77_a.pdf (0.77 MB)  Sperus 2/77 Leg 3 cruise track — sperus2_77_all.pdf (0.53 MB) 
Geology and geophysics 
Single-beam echosounding
Seismic refraction
Gravity measurements
Magnetic measurements