Planned maintenance — 18th January 2018 12:00 to 22nd January 2018 09:00 [more]

Cruise inventory

RV Cirolana CIR2/91

Cruise summary report

Cruise Info. 
Ship name (ship code)RV Cirolana (74CZ)
Cruise identifierCIR2/91
Cruise period1991-02-01 — 1991-02-25
Port of departureLowestoft, United Kingdom
Port of returnLowestoft, United Kingdom
Objectives1. Collect and process surface water samples from the southern North Sea and Channel, for Sb-125, Ru-106, Cs-137 and Tc-99, as part of a MAST project. (ACA5, COGEMA).
2. Collect and analyse surface water samples for nutrients, and collect surface sediment for organic micro-contaminants, from the S North Sea (BGC2, North Sea Task Force).
3. Study the particle and colloidal associations of Pu, Am and Th radionuclides in Irish Sea seawater using a variety of innovative techniques. (ACB8, ACA5, UCD, AUN).
4. Continue to study the speciation of Pu in the waters and sediments of the western Irish Sea. (UCD).
5. Collect and process surface water samples from the eastern Irish Sea to determine the concentrations of the naturally-occurring radionuclides Th-230, Th-234, U-238, Po-210 and Ra-226, to assess the impact of discharges from BNF Springfields and the Marchon plant at Whitehaven. (ACB4).
6. Assess the effectiveness of the benthos, in particular Amphiura filiformis, at mediating the transfer of dissolved and particulate forms across the sediment-water interface. (ACB1).
7. Investigate the effect of combined wave and current stresses on cohesive sediment resuspension and transport. (ACB6, COSEDS Group).
8. Complete the study of the behaviour of C-14 in the eastern Irish Sea. (ACBA, SURRC).
Chief scientistPeter John Kershaw (Ministry of Agriculture, Fisheries and Food Lowestoft Fisheries Laboratory)
ProjectMAST I-0052
Coordinating bodyEC
Cruise reportRV Cirolana CIR2/91 cruise report ci2_91.pdf — access key 'C' (0.21 MB) 
Ocean/sea areas 
GeneralEnglish Channel
North Sea
Irish Sea and St. George's Channel
SpecificNorth Sea, Channel and Irish Sea
Track chartsRV Cirolana CIR2/91 cruise track — trk3685a.html RV Cirolana CIR2/91 cruise track — trk3685b.html
Physical oceanography 
Surface measurements underway (T,S)Quantity: track kilometres = 1852
CTD stationsQuantity: number of stations = 80
Description: S only
Current metersQuantity: number of stations = 4
Description: 10 meters deployed
Chemical oceanography 
PhosphateQuantity: number of stations = 97
NitrateQuantity: number of stations = 97
NitriteQuantity: number of stations = 60
SilicateQuantity: number of stations = 95
RadioactivityQuantity: number of stations = 93
Geology and geophysics 
GrabQuantity: number of stations = 12
Description: bottom sediment - for fauna & radionuclide analysis
Moorings, landers, buoys 
Physical oceanography 
Current meters54° 28' 59" N  3° 42' 0" W — 2 meters, dir, sp. & temp. Deployed
Current meters54° 22' 0" N  3° 45' 0" W — 4 meters, dir, sp. & temp. Deployed.
Current meters54° 13' 0" N  3° 23' 59" W — 2 meters, dir, sp. & temp. Deployed
Current meters54° 23' 59" N  3° 37' 59" W — 2 meters, dir, sp. & temp. Deployed & near bed velocity measurements.