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RV Cefas Endeavour 1/08
Cruise summary report
Cruise Info. | |||||||||||||
Ship name (ship code) | RV Cefas Endeavour (74E9) | ||||||||||||
Cruise identifier | 1/08 | ||||||||||||
Cruise period | 2008-01-17 — 2008-01-22 | ||||||||||||
Status | Completed | ||||||||||||
Port of departure | Lowestoft, United Kingdom | ||||||||||||
Port of return | Lowestoft, United Kingdom | ||||||||||||
Purpose | Research | ||||||||||||
Objectives | Aims
1. Recover and re-deploy landers at Sean Gas Field, Oyster Ground and North Dogger. 2. Recover and re-deploy SmartBuoys at Warp, West Gabbard and North Dogger 3. Recover and re-deploy Waveriders at Hastings, Dungeness, Tyne and Dowsing. 4. CTD casts for nutrient samples and deck incubations 5. Underway measurements for nutrient samples and isotopic ratio work from continuous supply. 6. Collect Plankton samples for species composition using vertical nets. 7. Undertake assessment of benthic flora/fauna assemblage using hyperbenthic sledge. 8. Collect sediment profiles, of nutrients, chl-a. (NIOZ corer). 9. Undertake experiments on productivity and grazing the three E3205 sites. 10. Inter-comparison of PAM and PhytoFlash. Narrative The Endeavour sailed Thursday 00:00 and headed for the West Gabbard where the SmartBuoy was deployed, a CTD cast for water and ring nets (200um x 2) were collected We then steamed to the Warp collecting surface water en-route. The SmartBuoy was serviced and water samples collected before and after for calibration. Leaving the Thames via the Princes Channel we went round into the Channel to service Waveriders but the wind and sea picked up. It became obvious we would not be able to complete any work at Dungeness or Hastings, so we turned around at 19:30 and steamed back north towards the Sean Gas Field. We stopped at the "Mid Site" and Southern Bight for CTDs and were still collecting hourly surface stations for nutrients and salinity. We arrived at the Sean Gas Field site and collected a full set of CTD water samples and ring nets. The guard buoy was recovered easily but the lander, although responding as released, did not pop up the recovery floats. We spent 3 hours towing a grapple to hook it manually but without success. It is possible that the wire was snagged once but subsequently parted. The guard buoy was re-laid but not a new lander. It was too rough to attempt using the bent | ||||||||||||
Chief scientist | David Brian Sivyer (Centre for Environment, Fisheries and Aquaculture Science Lowestoft Laboratory) | ||||||||||||
Coordinating body | CEFAS | ||||||||||||
Cruise programme | (0.01 MB) | ||||||||||||
Cruise report | (0.01 MB) | ||||||||||||
Ocean/sea areas | |||||||||||||
General | English Channel North Sea | ||||||||||||
Specific | Thames Estuary, English Channel, Southern Bight, Oyster grounds and Central North Sea, Dogger Bank region | ||||||||||||
Data held at BODC | Get data | ||||||||||||
Series/Profiles | |||||||||||||
2 Multiple instrument types | Reference numbers Date and time Dissolved oxygen parameters in the water column Salinity of the water column Temperature of the water column Vertical spatial coordinates Concentration of suspended particulate material in the water column Visible waveband radiance and irradiance measurements in the water column Silicate concentration parameters in the water column Metadata parameters Nitrate concentration parameters in the water column Chlorophyll pigment concentrations in water bodies Reference numbers Date and time Dissolved oxygen parameters in the water column Salinity of the water column Temperature of the water column Vertical spatial coordinates Concentration of suspended particulate material in the water column Visible waveband radiance and irradiance measurements in the water column Silicate concentration parameters in the water column Metadata parameters Nitrate concentration parameters in the water column Chlorophyll pigment concentrations in water bodies
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