RRS Challenger CH80
Cruise summary report
| Cruise Info. | |
| Ship name (ship code) | RRS Challenger (74CH) |
| Cruise identifier | CH80 |
| Cruise period | 1991-06-06 — 1991-06-25 |
| Status | Completed |
| Port of departure | Barry, United Kingdom |
| Port of return | Plymouth, United Kingdom |
| Purpose | Research |
| Objectives | Study of fish spawning area |
| Chief scientist | Ian Joint (Plymouth Marine Laboratory) |
| Ocean/sea areas | |
| General | North East Atlantic Ocean (limit 40W) |
| Specific | Little Sole Bank |
| Track charts |  |
| Measurements | |
| Physical oceanography | |
| CTD stations | Quantity: number of profiles = 150 Description: CTD with transmissometer, fluorometer and PAR. |
| Subsurface temperature and salinity measurements | Quantity: number of deployments = 17 Description: UOR tows |
| Transparency (eg transmissometer) | Quantity: number of profiles = 150 Description: CTD with transmissometer, fluorometer and PAR. |
| Optics (eg underwater light levels) | Quantity: number of profiles = 150 Description: CTD with transmissometer, fluorometer and PAR. |
| Current meters | Quantity: number of deployments = 4 Description: 10 current meters on four moorings |
| Biology and fisheries | |
| Primary productivity | Quantity: number of experiments = 10 Description: 24 hour in situ incubations of 14C productivity |
| Phytoplankton pigs (eg chlorophyll, fluorescence) | Quantity: number of profiles = 150 Description: CTD with transmissometer, fluorometer and PAR. |
| Phytoplankton pigs (eg chlorophyll, fluorescence) | Quantity: number of experiments = 10 Description: incubations |
| Zooplankton | Quantity: number of deployments = 12 Description: Longhurst-Hardy plankton recorder |
| Zooplankton | Quantity: number of hauls = 68 Description: tows with high speed tow nets to sample zooplankton |
| Eggs and larvae | Quantity: number of hauls = 68 Description: tows with high speed tow nets to sample fish larvae |
| Eggs and larvae | Quantity: number of deployments = 17 Description: UOR tows with fluorescence sensors and collecting fish egg samples |
| Eggs and larvae | Quantity: number of deployments = 12 Description: Longhurst-Hardy plankton recorder. |
| Moorings, landers, buoys | |
| Physical oceanography | |
| Subsurface temperature measurements | 48° 34' 59" N 9° 5' 59" W — Deployed thermistor chain on one year mooring |
| Current meters | 48° 34' 59" N 9° 9' 0" W — Deployed one year mooring with 2 current meters |
| Current meters | 48° 34' 0" N 9° 1' 59" W — Deployed one year mooring with 2 current meters |
| Current meters | 48° 8' 59" N 9° 41' 59" W — Deployed one year mooring with 4 current meters |
| Current meters | 48° 38' 59" N 9° 16' 59" W — Deployed one year mooring with 2 current meters |
| Surface drifters/drifting buoys | 43° 34' 0" N 9° 7' 59" W — Deployed 4 ARGOS buoys for 2 weeks |
| Meteorology | |
| Other meteorological measurements | 48° 34' 59" N 9° 5' 59" W — Deployed wind sensor on one year mooring with thermistor chain (above) |
| Data held at BODC | |
| Discrete samples | |
| 101 CTD frame plus rosette sampler | Bacterial production in the water column Transmittance and attenuance of the water column Salinity of the water column Temperature of the water column Visible waveband radiance and irradiance measurements in the water column Bacteria generic abundance in water bodies Density of the water column Phaeopigment concentrations in the water column Primary production in the water column Chlorophyll pigment concentrations in water bodies |
