RRS Challenger CH26

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS Challenger (74CH)
Cruise identifierCH26
Cruise period1988-03-10 — 1988-03-29
Port of departureTroon, United Kingdom
Port of returnBarry, United Kingdom
Objectives1. Deploy 6 moorings and two bottom pressure recorders at the Hebrides Shelf edge.
2. Deploy 2 acoustic doppler current profilers, and recover after 7 or more days (neap to spring tides).
3. CTD and shipborne acoustic doppler survey across the continental slope (300m to 1850m).
4. Side-scan sonar survey of Hebrides shelf edge near 58N.
5. Box cores and bottom photographs from the same area.
6. Surface temperature and conductivity continuous sampling underway on passage.
7. Recover 2 offshore pressure recorders from Bristol Channel.
8. Recover Sediment Transport and Boundary Layer Equipment from Bristol Channel.
Chief scientistJohn Huthnance (Institute of Oceanographic Sciences Bidston Laboratory)
Cruise reportRRS Challenger CH26 cruise report ch26_88.pdf (0.62 MB) 
Ocean/sea areas 
GeneralBristol Channel
North East Atlantic Ocean (limit 40W)
SpecificN Atlantic - off Hebrides; Bristol Channel
Track chartsRRS Challenger CH26 cruise track — trk3342.html
Physical oceanography 
Surface measurements underway (T,S)Quantity: number of measurements = 1000
Description: disk
CTD stationsQuantity: number of stations = 65
Description: disk
Current metersQuantity: number of deployments = 24
Description: deployed only
Current profiler (eg ADCP)Quantity: track kilometres = 1852
Description: disk,Shipborne acoustic doppler current profiles
Geology and geophysics 
Core - soft bottomQuantity: number of deployments = 6
Bottom photographyQuantity: number of deployments = 9
Long/short range side scan sonarQuantity: track kilometres = 185