Cruise summary report
Cruise Info. | |
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Ship name (ship code) | RV Clione (74CN) |
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Cruise identifier | CLI4B/67 |
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Cruise period | 1967-06-08 — 1967-06-15 |
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Status | Completed |
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Port of departure | Fleetwood, United Kingdom |
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Purpose | Research |
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Objectives | 1. To mark approximately 2,500 plaice.
2. To obtain benthos samples.
3. To make a pilot scale radiological survey of the Irish Sea prior to a major survey later in the year.
4. Trials of gamma-spectrometry equipment to monitor in situ wind scale area sea bed and sea water.
Samples of other fish species and benthos for activity analysis were obtained from 3 hauls |
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Chief scientist | Dennis S Woodhead (Ministry of Agriculture, Fisheries and Food Lowestoft Fisheries Laboratory) |
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Cruise report | (0.14 MB) |
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Ocean/sea areas | |
General | Irish Sea and St. George's Channel |
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Specific | South of Windscale effluent outfall, off Seascale, Solway Firth, Windscale-Holyhead, Holyhead-Dublin |
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Measurements | |
Chemical oceanography | |
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Radioactivity | Quantity: number of stations = 8 Description: Radiological survey: stations between Windscale and Holyhead, and Holyhead and Dublin |
Contamination | |
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Bottom deposits | Quantity: number of stations = 6 Description: 2 stations in between hauls made with the gamma-spectrometry probe. At each station a seabed sample was taken for reference purposes. While at anchor off Seascale, the gamma-spectrometry probe was used to monitor possible time-variations in the sea-water activity at 5 fathoms. A series of gamma-spectrometry probe stations were made on a line running northwards from the pipeline outfall to the South Workington buoy. 3 additional stations close to the pipeline from the CEGB nuclear power station at Wylfa, 1 near to the pipeline outfall from AEE Winfrith |
Biology and fisheries | |
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Seston | Quantity: number of hauls = 9 Description: Made in the Solway Firth with the Tin Tow Net to obtain bulk plankton samples for activity analysis |
Demersal fish | Quantity: number of hauls = 7 Description: 435 fish yielded for marking from 1 haul in 2 miles south of the Windscale effluent outfall, 3 hauls yielding 1280 plaice. |