RRS Challenger CH7/84

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS Challenger (74CH)
Cruise identifierCH7/84
Cruise period1984-09-19 — 1984-10-04
Port of departureFalmouth, United Kingdom
Port of returnFalmouth, United Kingdom
Objectives1. Measure the bottom currents over the Fan.
2. Map the distribution and morphology of the sediments.
3. Examine the nature of the sediment surface.
4. Determine the shallow sequence of sediments in the fan.
Chief scientistDouglas Hamilton (University of Bristol Geology Department)
Cruise reportRRS Challenger CH7/84 cruise report ch7_84.pdf (0.37 MB) 
Ocean/sea areas 
GeneralNorth East Atlantic Ocean (limit 40W)
SpecificN. Bay of Biscay
Track chartsRRS Challenger CH7/84 cruise track — trk3011.html RRS Challenger CH7/84 cruise track — trk3011a.html RRS Challenger CH7/84 cruise track — trk3011b.html
Physical oceanography 
Current metersQuantity: number of deployments = 12
Description: 14 cms deployed and recovered;12 moorings laid
Geology and geophysics 
GrabQuantity: number of samples = 12
Core - soft bottomDescription: physical analysis
Bottom photographyQuantity: number of deployments = 6
Description: stereo+time lapse cine.
Single-beam echosoundingQuantity: track kilometres = 740.8
Description: '0'=5 1/4 inch floppy disc
Single channel seismic reflectionQuantity: track kilometres = 677.832