Cruise inventory

RRS Challenger CH8/77

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS Challenger (74CH)
Cruise identifierCH8/77
Cruise period1977-05-10 — 1977-05-23
Port of departureArdrossan, United Kingdom
Port of returnBarry, United Kingdom
ObjectivesTo study the geological history of the Firth of Lorne by sampling of rock and soft sediments on the sea-bed (using gravity corers, grabs and the I.G.S rock-drill), by geophysical measurements, particuarly sono-buoy seismic refraction work, shallow reflection profiling, deep reflection profiling using a multi-channel array and magnetometry, and by monitoring tidal currents in some of the ice-gouged troughs in the Firth.
Chief scientistJeremy Hall (University of Glasgow Department of Geology)
Cruise reportRRS Challenger CH8/77 cruise report ch8_77.pdf — access key 'C' (0.92 MB) 
Ocean/sea areas 
GeneralInner Seas off the West Coast of Scotland
Track chartsRRS Challenger CH8/77 cruise track — trk1807.html RRS Challenger CH8/77 cruise track — trk1807a.html
Physical oceanography 
Current metersQuantity: number of deployments = 2
Description: 24 hours
Geology and geophysics 
GrabQuantity: number of samples = 21
Core - soft bottomQuantity: number of samples = 26
Description: gravity core samples.
Single-beam echosoundingQuantity: track kilometres = 666.72
Long/short range side scan sonarQuantity: track kilometres = 666.72
Single channel seismic reflectionQuantity: track kilometres = 666.72
Seismic refractionQuantity: track kilometres = 54
Magnetic measurementsQuantity: track kilometres = 666.72