Cruise inventory

RV Cefas Endeavour 1/08

Cruise summary report

Cruise Info. 
Ship name (ship code)RV Cefas Endeavour (74E9)
Cruise identifier1/08
Cruise period2008-01-17 — 2008-01-22
StatusCompleted
Port of departureLowestoft, United Kingdom
Port of returnLowestoft, United Kingdom
PurposeResearch
ObjectivesAims

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 scientistDavid Brian Sivyer (Centre for Environment, Fisheries and Aquaculture Science Lowestoft Laboratory)
Coordinating bodyCEFAS
Cruise reportRV Cefas Endeavour 1/08 cruise report endeavour1_08.pdf — access key 'C' (0.01 MB) 
Ocean/sea areas 
GeneralEnglish Channel
North Sea
SpecificThames Estuary, English Channel, Southern Bight, Oyster grounds and Central North Sea, Dogger Bank region
Data held at BODC 
Series/Profiles 
2  Multiple instrument types
Visible waveband radiance and irradiance measurements in the water column
Chlorophyll pigment concentrations in water bodies
Metadata parameters
Silicate concentration parameters in the water column
Vertical spatial coordinates
Salinity of the water column
Concentration of suspended particulate material in the water column
Nitrate concentration parameters in the water column
Temperature of the water column
Reference numbers
Date and time
Dissolved oxygen parameters in the water column
Visible waveband radiance and irradiance measurements in the water column
Chlorophyll pigment concentrations in water bodies
Metadata parameters
Silicate concentration parameters in the water column
Vertical spatial coordinates
Salinity of the water column
Concentration of suspended particulate material in the water column
Nitrate concentration parameters in the water column
Temperature of the water column
Reference numbers
Date and time
Dissolved oxygen parameters in the water column

BODC idDate/TimeLocationDoc.
11672092008-01-20 14:00  — 2008-04-27 19:30 55° 40' 59" N  2° 16' 48" E  View metadata report for BODC series reference number 1167209
11672102008-01-20 14:00  — 2008-04-27 19:30 55° 40' 59" N  2° 16' 48" E  View metadata report for BODC series reference number 1167210