Cruise Info. | |
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Ship name (ship code) | FRV Explorer (74EX) |
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Cruise identifier | 6/72 |
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Cruise period | 1972-07-14 — 1972-08-10 |
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Status | Completed |
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Port of departure | Aberdeen, United Kingdom |
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Port of return | Aberdeen, United Kingdom |
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Purpose | Research |
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Objectives | 1) To survey the abundance and distribution of 0-group gadoids in mid-water between latitudes 57 degrees and 61 degrees North, and 03 degrees West and 04 degrees East.
2) To undertake trials of the Aberdeen fish counting equiptment
3) To take routine samples of the organic and inorganic environments
4) Deep frozen samples of fish and medusae were obtained for the determination of weight-length relationships
On the 28/07/1972 a call was made at Lerwick till the 29/07/1972 for water and mail. A brief stop was made at Invergordon from the 03/08/1972 to disembark a fishing mate who was later collected at Peterhead on the 05/08/1972 with another crew member and a sick crew member was put ashore |
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Chief scientist | John R G Hislop (Department of Agriculture and Fisheries for Scotland Aberdeen Marine Laboratory) |
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Cruise report | (0.12 MB) |
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Ocean/sea areas | |
General | North Sea Norwegian Sea |
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Specific | W of Shetlands, Fair Isle, Fladen ground, Devil's Hole, Bressay Shoal |
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Measurements | |
Physical oceanography | |
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Bathythermograph | Quantity: number of profiles = 51 Description: mechanical |
Water bottle stations | Quantity: number of stations = 51 |
Chemical oceanography | |
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Phosphate | Quantity: 51 |
Nitrate | Quantity: 51 |
Silicate | Quantity: 51 |
Contamination | |
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Other contaminant measurements | Quantity: 24 Description: chemical pollution |
Biology and fisheries | |
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Phytoplankton pigs (eg chlorophyll, fluorescence) | Quantity: 51 |
Phytoplankton | Quantity: number of samples = 19 Description: plankton samples obtained with the THM net. They were deep frozen for determination of the heavy metal content |
Zooplankton | Quantity: 56 |
Birds | |
Mammals and reptiles | |
Pelagic fish | Quantity: number of hauls = 110 Description: Made with the Aberdeen young fish pelagic trawl at depths between 10-30 fathoms. Haddock, cod, whiting, Norway pout, saithe, blue whiting, sandeels and dogfish caught. Approximately 100 young gadoids were brought back alive for aquarium experiments |
Demersal fish | Quantity: number of hauls = 110 Description: Made with the Aberdeen young fish pelagic trawl at depths between 10-30 fathoms. Haddock, cod, whiting, Norway pout, saithe, blue whiting, sandeels and dogfish caught. Approximately 100 young gadoids were brought back alive for aquarium experiments |
Gear research | Quantity: number of hauls = 112 |