FS Poseidon PO300_2
Cruise summary report
|Ship name (ship code)||FS Poseidon (06PO)|
|Cruise period||2003-07-19 — 2003-08-06|
|Port of departure||Glasgow, United Kingdom|
|Port of return||Glasgow, United Kingdom|
|Objectives||1. To perform hydrographic surveys along the Standard Rockall section (Ellett Line).
2. Recover current meter moorings at Stations F and M either side of Anton Dohrn Seamount.
3. Obtain 501 surface samples of sea water from Anton Dohrn to Sound of Mull for Technesium studies.
4. Hydrophone Survey in Rockall Channel and Minch to monitor cetacean activity.
5. Deploy 2 moorings on the Wyville Thomson Ridge, WTT and WTB.
6. Obtain cores and photographs from 2 stations either side of the Ridge in ~1100m, WTS and WTNa.
7. Conduct various CTD lines along and across the ridge.
8. Opportunistic photographic, coring and CTD work in the Minch due to the weather.
The cruise was divided into 2 legs, Objectives 1 to 4 being covered by Leg 1. There was no sign of moorings F and M despite an extensive acoustic search. Argos Alerts had been received from both these moorings prior to the cruise. All other Objectives on Leg 1 were achieved.
Leg 2 was affected by adverse weather conditions towards the end of the cruise resulting in Objective 8 being added. Objective 6 was largely achieved. WTNa was not an ideal site from a coring perspective so a new site at WTNb was chosen as an alternative. Only one mooring was deployed, namely VTT. Only a few CTDs were worked as part of Objective 7.
|Chief scientist||Colin R Griffiths (Scottish Association for Marine Science)|
|Project||Northern Seas Programme|
|Cruise report||(0.97 MB)|
|General||North Atlantic Ocean|
|Specific||N.E. Atlantic, Rockall Channel, Minch and Wyville Thomson Ridge|
|Track charts||(0.20 MB)|
|Water bottle stations||Quantity: number of stations = 18|
Description: Water bottle stations using SeaBird rosette for subsequent salinity and nutrient analysis
|CTD stations||Quantity: number of stations = 82|
Description: SBE9/11+ CTD system with T, P, C, Fluo and O2.
|Radioactivity||Quantity: number of samples = 15|
Description: 50-litre collected underway from surface for Technecium analysis.
|Biology and fisheries|
|Zooplankton||Quantity: number of hauls = 18|
Description: Zooplankton vertical net, samples preserved on board and returned to lab
|Benthic bacteria/micro-organisms||Quantity: number of stations = 13|
Description: NIOZ box corer, sieved on board, returned to lab for species identification
|Mammals and reptiles||Quantity: number of surveys = 18|
Description: Hydrophone surveys for Cetacean detection
|Other biological/fisheries measurement||Quantity: number of stations = 6|
Description: Bedhop Camera, colour slide film returned to lab, main interest benthic communities
|Geology and geophysics|
|Core - soft bottom||Quantity: number of stations = 5|
Description: SAMS gravity Corer, cores returned to lab for geological examination
|Core - soft bottom||Quantity: number of stations = 12|
Description: SMBA Multi/Mega corer, cores sliced on board and returned to lab for geochemical analysis
|Moorings, landers, buoys|
|Current meters||57° 30' 29" N 12° 14' 30" W — Attempted recovery - a string of 5 Aanderaa RCMs. No contact with mooring. (F)|
|Current meters||57° 17' 59" N 60° 10' 59" W — Attempted recovery - a string of 6 Aanderaa RCMs. No contact with mooring. (M)|
|Current profiler (eg ADCP)||60° 10' 59" N 7° 43' 59" W — Deployed - near bottom LR ADCP, 1 RCM, 1 Seacat and 10 miniloggers. (WTT)|
|Data held at BODC||Get data|
|82 CTD frame plus rosette sampler||Particulate total and organic nitrogen concentrations in the water column|
Nitrite concentration parameters in the water column
Phosphate concentration parameters in the water column
Salinity of the water column
Unclassified pigment concentrations in the water column
Silicate concentration parameters in the water column
Ammonium and ammonia concentration parameters in water bodies
Nitrate concentration parameters in the water column
Particulate total and organic carbon concentrations in the water column
Chlorophyll pigment concentrations in water bodies
|1 Instrument mooring|