RRS Challenger CH3/81

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS Challenger (74CH)
Cruise identifierCH3/81
Cruise period1981-02-12 — 1981-02-25
Port of departureFleetwood, United Kingdom
Port of returnBarry, United Kingdom
ObjectivesTo carry out experiments to find the variation of seismic velocity with depth, with Challenger towing a 12-channel hydrophone streamer and the "Starella" firing explosives at 2 or 3 minute intervals, to create seismic profiles.
Chief scientistRobert S White (University of Cambridge Department of Earth Sciences)
Coordinating bodywith E.J.W.Jones
Cruise reportRRS Challenger CH3/81 cruise report ch3_81.pdf (0.66 MB) 
Ocean/sea areas 
GeneralNorth Sea
North East Atlantic Ocean (limit 40W)
SpecificN.E. Atlantic
Track chartsRRS Challenger CH3/81 cruise track — trk2625.html
Geology and geophysics 
Multi-beam echosoundingQuantity: track kilometres = 1850
Single channel seismic reflectionQuantity: number of track lines = 50
Seismic refractionQuantity: track kilometres = 4625
Magnetic measurementsQuantity: track kilometres = 1850