Cruise Info. | |
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Ship name (ship code) | FRV Explorer (74EX) |
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Cruise identifier | 4A/76 |
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Cruise period | 1976-05-11 — 1976-05-24 |
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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 | To continue and complete the joint IMER/DAFS/MAFF contribution to the Fladen Ground experiment (FLEX)
1) To describe the horizontal variability of the physical, chemical and biological processes over the FLEX box by making a number of passes over the 7 legs of the grid
2) To describe the vertical variability of the physical, chemical and biological processes at stations 1-9
3) To measure the rates of selected processes (primary productivity, sedimentation etc.)
A line was worked jointly with ''Cirolana'' to the FLEX area. Intercalibration stations were worked with ''Meteor'' on the 16/05/1976 and the 23/05/1976. |
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Chief scientist | James A Adams (Department of Agriculture and Fisheries for Scotland Aberdeen Marine Laboratory), John H Steele (Department of Agriculture and Fisheries for Scotland Aberdeen Marine Laboratory) |
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Project | JONSDAP 76 (FLEX) |
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Cruise report | (0.20 MB) |
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Ocean/sea areas | |
General | North Sea |
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Measurements | |
Physical oceanography | |
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Surface measurements underway (T,S) | |
Water bottle stations | Quantity: number of stations = 42 Description: Measurements from both parts of the cruise: 86 S surface |
Subsurface temperature and salinity measurements | |
Chemical oceanography | |
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Phosphate | Quantity: 40 Description: Measurements from both parts of the cruise |
Nitrate | Quantity: 42 Description: Measurements from both parts of the cruise |
Nitrite | Quantity: 42 Description: Measurements from both parts of the cruise |
Total - N | Quantity: 3 Description: Measurements from both parts of the cruise |
Silicate | Quantity: 40 Description: Measurements from both parts of the cruise |
Biology and fisheries | |
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Primary productivity | Quantity: 7 Description: Measurements from both parts of the cruise |
Phytoplankton pigs (eg chlorophyll, fluorescence) | Quantity: 42 Description: Measurements from both parts of the cruise |
Particulate organic matter (inc POC, PON) | Quantity: 6 Description: Measurements from both parts of the cruise |
Phytoplankton | |
Zooplankton | Description: survey:population,physiology etc. |
Other biological/fisheries measurement | Description: sedimentation rates and nutrient kinetics. Sets of 5 settlement traps were deployed and recovered 8 times during the cruise |
Meteorology | |
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Routine standard measurements | |