Cruise summary report
Cruise Info. | |
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Ship name (ship code) | RV Clione (74CN) |
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Cruise identifier | CLI7/82 |
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Cruise period | 1982-05-20 — 1982-06-07 |
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Status | Completed |
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Port of departure | Barry, United Kingdom |
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Port of return | Lowestoft, United Kingdom |
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Purpose | Research |
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Objectives | 1. To carry out a plankton survey using the new MAFF Guildline 76cm high speed sampler, to determine the distribution and abundance of Nephrops larvae.
2. To carry out a trawl survey using the Boris 600 mesh fish/prawn trawl, to determine the distribution of adult Nephrops, and to take samples for fecundity and maturity studies.
3. To survey in selected areas with the DAFS underwater television equipment towed close to the bottom, to estimate the abundance of adult Nephrops.
4. To take sub-surface sea water samples for salinity phosphate, nitrate, nitrite and silicate analysis at each plankton station and to monitor continuously sub-surface sea water for chlorophyll 'a' fluorescence.
5. To take sub-surface sea water samples at selected plankton stations for 137Cs analysis by AEP 1.
6. To collect and deep freeze the stomach contents from selected fish species for predation studies (D Symonds).
7. To lay a moored current meter station at the Nab Tower site for AEP 3. |
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Chief scientist | Brenda M Thompson (Ministry of Agriculture, Fisheries and Food Lowestoft Fisheries Laboratory) |
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Cruise report | (0.23 MB) |
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Ocean/sea areas | |
General | Irish Sea and St. George's Channel |
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Specific | Irish Sea |
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Track charts | |
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Measurements | |
Physical oceanography | |
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Water bottle stations | Quantity: number of stations = 182 Description: surface only 10 with T only |
Current meters | Description: 2 current meters deployed |
Chemical oceanography | |
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Phosphate | Quantity: number of stations = 151 |
Nitrate | Quantity: number of stations = 151 |
Nitrite | Quantity: number of stations = 145 |
Silicate | Quantity: number of stations = 151 |
Radioactivity | Quantity: number of samples = 40 |
Biology and fisheries | |
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Phytoplankton | Quantity: number of stations = 159 Description: completed using the MAFF/guildline plankton sampler. |
Zooplankton | Quantity: number of stations = 159 Description: completed using the MAFF/guildline plankton sampler. |
Demersal fish | Quantity: number of hauls = 12 |
Geology and geophysics | |
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Bottom photography | Quantity: number of stations = 6 Description: surveyed using the DAFS TV camera sledge |