RRS Challenger 0595H (CH118(charter))
Cruise summary report
| Cruise Info. | |
| Ship name (ship code) | RRS Challenger (74CH) |
| Cruise identifier | 0595H (CH118(charter)) |
| Cruise period | 1995-05-16 — 1995-05-25 |
| Status | Completed |
| Port of departure | Aberdeen, United Kingdom |
| Port of return | Aberdeen, United Kingdom |
| Purpose | Research |
| Objectives | 1. To track and sample a drifting patch of larval haddock on the shelf north of Shetland and sequentially sample their vertical distribution, zooplankton prey distribution and abundance, and abiotic environment.
2. To obtain some data on the wider distribution of larvae and plankton across the shelf and into the Faroe-Shetland Channel. |
| Chief scientist | Mike R Heath (Scottish Office Agriculture Environment and Fisheries Department Aberdeen Marine Laboratory) |
| Project | GBF1 |
| Cruise report |  (0.18 MB) |
| Ocean/sea areas | |
| General | North Sea North East Atlantic Ocean (limit 40W) |
| Specific | Northern North Sea, shelf north of Scotland and Faroe/Shetland Channel |
| Track charts |  |
| Measurements | |
| Physical oceanography | |
| Surface measurements underway (T,S) | Quantity: activity duration in days = 8 Description: underway measurements on non-toxic supply |
| CTD stations | Quantity: number of profiles = 42 Description: Chelsea CTD |
| Subsurface temperature and salinity measurements | Quantity: number of stations = 59 |
| Transparency (eg transmissometer) | Quantity: number of measurements = 101 Description: Profiles and towed record |
| Transparency (eg transmissometer) | Quantity: activity duration in days = 8 Description: underway measurements on non-toxic supply |
| Transparency (eg transmissometer) | Quantity: number of stations = 59 |
| Optics (eg underwater light levels) | Quantity: number of profiles = 42 Description: PAR profiles |
| Current profiler (eg ADCP) | Quantity: activity duration in days = 8 Description: VM ADCP 10 min ints. |
| Chemical oceanography | |
| Phosphate | Quantity: number of samples = 220 |
| Nitrate | Quantity: number of samples = 220 |
| Ammonia | Quantity: number of samples = 20 |
| Silicate | Quantity: number of samples = 220 |
| Biology and fisheries | |
| Phytoplankton pigs (eg chlorophyll, fluorescence) | Quantity: activity duration in days = 8 Description: underway measurements on non-toxic supply |
| Phytoplankton pigs (eg chlorophyll, fluorescence) | Quantity: number of samples = 120 |
| Phytoplankton pigs (eg chlorophyll, fluorescence) | Quantity: number of stations = 59 |
| Zooplankton | Quantity: number of samples = 300 Description: LHPR |
| Eggs and larvae | Quantity: number of samples = 80 Description: Methot/Isaac Kidd |
| Other biological/fisheries measurement | Quantity: number of stations = 59 Description: Optical Plankton Counter |
| Meteorology | |
| Incident radiation | Quantity: activity duration in days = 8 |
| Routine standard measurements | Quantity: activity duration in days = 8 Description: wind speed and direction |
| Moorings, landers, buoys | |
| Physical oceanography | |
| Surface drifters/drifting buoys | 60° 57' 0" N 1° 8' 59" W — Drift buoy lat/long at 2 hr intervals. T at 10min intervals at 4 depths from 1 to 40m below the rig. Drift period 110 hrs. |
