RV Clione CLI12/70

Cruise summary report

Cruise Info. 
Ship name (ship code)RV Clione (74CN)
Cruise identifierCLI12/70
Cruise period1970-09-15 — 1970-10-08
Port of departureLowestoft, United Kingdom
Port of returnLowestoft, United Kingdom
Objectives1. To moor and recover a network of 9 current meter stations extending from Anglesey to the Irish coast
and the "Midway" station of the Eastern Irish Sea network. (See attached map)
2. To measure currents at 4 metre intervals throughout the water column for at least one tidal cycle at a station inside the Kish Bank.
3. To monitor by means of serial observations hydrographic conditions between the moored stations.
4. To pick up from Portavogie and Port Erin the surface buoys that went a drift last year and a sub-surface buoy from Aberdaron on the Lleyn peninsula in North Wales.
5. To test a new release hook, the ability of the acoustic release system to cut an instrument wire and the addition of a pressure transducer to the data recording system.
6. On behalf of the "Working Party" on the disposal of sewage sludge in Liverpool Bay:
i. To change the moored current meters at the Mid-Grid buoy.
ii. For 12.5 hours after the releases of activated sludge on 22 and 25 September,
to measure tidal currents, salinity and temperature throughout the water column
in the vicinity of the release.
iii. To collect water samples from the stations of the Main Sampling Grid for subsequent salinity and nutrient analysis and for Dr Burrows' Bioassay programme.
Chief scientistJohn W Ramster (Ministry of Agriculture, Fisheries and Food Lowestoft Fisheries Laboratory)
Cruise reportRV Clione CLI12/70 cruise report clione12_70.pdf (0.48 MB) 
Ocean/sea areas 
GeneralEnglish Channel
Irish Sea and St. George's Channel
Physical oceanography 
Water bottle stationsQuantity: number of stations = 131
Description: bottom 40 bottom only
Current metersQuantity: number of deployments = 9
Description: 12 days using PRCM,also DRCM as check
Surface drifters/drifting buoysQuantity: number of deployments = 650
Description: incl.450 bottom
Chemical oceanography 
OxygenQuantity: number of stations = 37
Other meteorological measurementsDescription: sea and swell