RRS Discovery D257
Cruise summary report
| Cruise Info. | |
| Ship name (ship code) | RRS Discovery (74E3) |
| Cruise identifier | D257 |
| Cruise period | 2001-09-21 — 2001-10-09 |
| Status | Completed |
| Port of departure | Govan, United Kingdom |
| Port of return | Govan, United Kingdom |
| Purpose | Research |
| Objectives | 1. Occupy the Ellett Line (Sound of Mull to Rockall) and deploy moorings at 'F' and 'M'.
2. Work 3 stations within the Clyde Sea - CTD and Rosette, corers and landers ... 3. Work 2 stations either side of Wyville Thomson Ridge about 1100m CTD and Rosette, corers and landers ... 4. Trawl for coral in S. Minch off Mingulay. 5. Deploy 3 ADCP moorings in F/S Channel. 6. Various underway measurements along cruise track. |
| Chief scientist | Colin R Griffiths (Scottish Association for Marine Science) |
| Project | Northern Seas and OAERRE Edinburgh |
| Coordinating body | SAMS/School of Life Sciences, Napier University, Edinburgh, UK |
| Cruise report |  (1.20 MB) (0.04 MB) (0.02 MB) |
| Ocean/sea areas | |
| General | North East Atlantic Ocean (limit 40W) |
| Specific | Rockall Trough, Clyde Sea, Wyville Thomson Ridge, Sea of the Hebrides |
| Track charts | (0.14 MB) |
| Measurements | |
| Physical oceanography | |
| Bathythermograph | Quantity: number of profiles = 58 Description: XBT drops with T5 and T7 probes |
| Water bottle stations | Quantity: number of stations = 26 Description: Rosette pylon - 24 bottles samples taken for salinity, Chl, nutrients, radiochemistry, phytoplankton and oxygen |
| CTD stations | Quantity: number of profiles = 26 Description: using SBE9/11+ and oxygen, Fl. Trans, L55 |
| Subsurface temperature and salinity measurements | Quantity: track kilometres = 2778 Description: Underway measurements ADCP, T, S, Fl, Trans, Chl |
| Current profiler (eg ADCP) | Quantity: track kilometres = 2778 Description: Underway measurements ADCP, T, S, Fl, Trans, Chl |
| Chemical oceanography | |
| Oxygen | Quantity: number of deployments = 39 Description: NIOZ, multi, mega corers |
| Total - P | Quantity: number of deployments = 39 Description: NIOZ, multi, mega corers |
| Nitrate | Quantity: number of deployments = 39 Description: NIOZ, multi, mega corers |
| Other chemical oceanographic measurements | Quantity: number of deployments = 39 Description: NIOZ, multi, mega corers |
| Biology and fisheries | |
| Phytoplankton | Quantity: number of stations = 26 Description: Vertical plankton net |
| Zooplankton | Quantity: number of stations = 26 Description: Vertical plankton net |
| Other biological/fisheries measurement | Quantity: number of hauls = 1 Description: Agissez trawl (S. Minch) coral |
| Meteorology | |
| Routine standard measurements | Quantity: activity duration in days = 18 Description: Synoptic Met reports - voluntary observing ship |
| Geology and geophysics | |
| Bottom photography | Quantity: number of deployments = 8 Description: Bedhop camera b/w and colour |
| Single-beam echosounding | Quantity: track kilometres = 2778 Description: Bathymetry PES |
| Other geological/geophysical measurements | Quantity: track kilometres = 2778 Description: 3.5 KHz sub bottom profiler |
| Moorings, landers, buoys | |
| Physical oceanography | |
| Current meters | 57° 31' 59" N 12° 15' 0" W — Deploy 5 RCM's Mooring F |
| Current meters | 57° 31' 59" N 10° 22' 59" W — Deploy 6 RCM's mooring M |
| Current profiler (eg ADCP) | 60° 34' 59" N 4° 47' 59" W — Deploy WT3 ADCP 75 LR (recovered on Scotia 1501S trip in October 2001) |
| Current profiler (eg ADCP) | 60° 12' 59" N 6° 24' 59" W — Deploy WT2 ADCP 75 LR (recovered on Scotia 1501S in October 2001) |
| Current profiler (eg ADCP) | 59° 53' 59" N 6° 18' 59" W — Deploy WT1 ADCP 300 (recovered on Scotia 1501S trip in October 2001) |
| Chemical oceanography | |
| Oxygen | 55° 58' 59" N 4° 52' 59" W — SAMS Lander - deployed for about 24 hours |
| Oxygen | 60° 15' 0" N 6° 52' 59" W — SAMS Lander - deployed for about 24 hours |
| Oxygen | 59° 42' 59" N 7° 9' 0" W — SAMS Lander - deployed for about 24 hours |
| Oxygen | 55° 47' 59" N 5° 15' 59" W — SAMS Lander - deployed for about 24 hours |
| Oxygen | 55° 13' 59" N 5° 15' 59" W — SAMS Lander - deployed for about 24 hours |
