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
StatusCompleted
Port of departureArdrossan, United Kingdom
Port of returnBarry, United Kingdom
PurposeResearch
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
Measurements 
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