RRS Challenger CH85
Cruise summary report
| Cruise Info. | |
| Ship name (ship code) | RRS Challenger (74CH) |
| Cruise identifier | CH85 |
| Cruise period | 1991-10-25 — 1991-11-12 |
| Status | Completed |
| Port of departure | Greenock, United Kingdom |
| Port of return | Troon, United Kingdom |
| Purpose | Research |
| Objectives | 1. 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 scientist | Alan J Harrison (Proudman Oceanographic Laboratory) |
| Cruise report |  (0.57 MB) |
| Ocean/sea areas | |
| General | North Sea |
| Specific | 59-61N;1W-3E |
| Track charts |  |
| Measurements | |
| Physical oceanography | |
| Surface measurements underway (T,S) | Quantity: activity duration in days = 14 |
| CTD stations | Quantity: number of profiles = 35 |
| Current meters | Quantity: number of stations = 2 |
| Current profiler (eg ADCP) | Quantity: activity duration in days = 14 Description: shipborne ADCP |
| Moorings, landers, buoys | |
| Physical oceanography | |
| Subsurface temperature measurements | 59° 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 measurements | 59° 40' 0" N 1° 0' 0" E — Thermistor chain recovered |
| Current meters | 59° 53' 59" N 1° 0' 0" E — Two current meter moorings, recovered early |
| Current meters | 59° 40' 0" N 1° 0' 0" E — Several current meter moorings recovered |
| Current profiler (eg ADCP) | 59° 40' 0" N 0° 31' 59" 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° 40' 0" N 0° 49' 0" E — ADCP on sea bed recovered |
| Current profiler (eg ADCP) | 59° 53' 59" N 1° 0' 0" E — ADCP on sea bed recovered |
| Current profiler (eg ADCP) | 59° 45' 0" N 1° 0' 0" E — ADCP 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 |
| 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° 53' 59" N 1° 0' 0" E — Pressure recorder attached to ADCP recovered |
| Instrumented wave measurements | 59° 40' 0" N 1° 0' 0" E — Waverider recovered |
| Other physical oceanographic measurements | 59° 40' 0" N 1° 0' 0" E — Met. Buoy recovered |
| Data held at BODC | |
| Discrete samples | |
| 35 CTD frame plus rosette sampler | Transmittance and attenuance of the water column Salinity of the water column Temperature of the water column Dissolved oxygen parameters in the water column Visible waveband radiance and irradiance measurements in the water column Density of the water column Raw light meter output Raw fluorometer output |
