Cruise inventory

RRS Challenger CH85

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS Challenger (74CH)
Cruise identifierCH85
Cruise period1991-10-25 — 1991-11-12
StatusCompleted
Port of departureGreenock, United Kingdom
Port of returnTroon, United Kingdom
PurposeResearch
Objectives1. To deploy 5 additional moorings to the array.
2. To recover and redeploy 8 moorings from the array.
3. To deploy and recover 4 drogued drifting buoys and search/recover one missing from cruise 84/91.
4. To carry out CTD/SEASOAR and ADCP survey within a box from 58ºN to 61ºN and from 01ºW to 03ºE.
5. To make detailed depth and sea-bed survey by grab and photographic dips in the vicinity of the moorings.
6. To recover all moorings at the conclusion of the experiment.
Chief scientistAlan J Harrison (Proudman Oceanographic Laboratory)
Cruise reportRRS Challenger CH85 cruise report ch85_91.pdf — access key 'C' (0.57 MB) 
Ocean/sea areas 
GeneralNorth Sea
Specific59-61N;1W-3E
Track chartsRRS Challenger CH85 cruise track — trk3740.html
Measurements 
Physical oceanography 
Surface measurements underway (T,S)Quantity: activity duration in days = 14
CTD stationsQuantity: number of profiles = 35
Current metersQuantity: number of stations = 2
Current profiler (eg ADCP)Quantity: activity duration in days = 14
Description: shipborne ADCP
Moorings, landers, buoys 
Physical oceanography 
Subsurface temperature measurements59° 40' 0" N  0° 58' 59" E — Thermistor chain recovered, also at 59 40N, 1E; 59 40N, 0 54E and 59 43N, 1E
Subsurface temperature measurements59° 40' 0" N  1° 0' 0" E — Thermistor chain recovered
Current meters59° 53' 59" N  1° 0' 0" E — Two current meter moorings, recovered early
Current meters59° 40' 0" N  1° 0' 0" E — Several current meter moorings recovered
Current profiler (eg ADCP)59° 53' 59" N  1° 0' 0" E — ADCP on sea bed recovered
Current profiler (eg ADCP)59° 40' 0" N  0° 49' 0" E — ADCP on sea bed recovered
Current profiler (eg ADCP)59° 40' 0" N  1° 0' 0" E — Two ADCPs on sea bed recovered
Current profiler (eg ADCP)59° 45' 0" N  1° 0' 0" E — ADCP on sea bed recovered
Current profiler (eg ADCP)59° 40' 0" N  0° 31' 59" E — ADCP on sea bed recovered
Sea level (inc. bot. press., inverted echosounder)59° 53' 59" N  1° 0' 0" E — Pressure recorder attached to ADCP recovered
Sea level (inc. bot. press., inverted echosounder)59° 40' 0" N  1° 0' 0" E — Pressure recorder on sea bed recovered
Sea level (inc. bot. press., inverted echosounder)59° 40' 0" N  0° 31' 59" E — Pressure recorder attached to ADCP recovered
Instrumented wave measurements59° 40' 0" N  1° 0' 0" E — Waverider recovered
Other physical oceanographic measurements59° 40' 0" N  1° 0' 0" E — Met. Buoy recovered
Data held at BODC 
Discrete samples 
35  CTD frame plus rosette samplerDensity of the water column
Transmittance and attenuance of the water column
Visible waveband radiance and irradiance measurements in the water column
Raw fluorometer output
Salinity of the water column
Raw light meter output
Temperature of the water column
Dissolved oxygen parameters in the water column