RRS John Murray JM12/81 (B/5/81 C/4/81)
Cruise summary report
Cruise Info. | |
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Ship name (ship code) | RRS John Murray (74MJ) |
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Cruise identifier | JM12/81 (B/5/81 C/4/81) |
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Cruise period | 1981-09-02 — 1981-09-09 |
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Status | Completed |
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Port of departure | Barry, United Kingdom |
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Port of return | Barry, United Kingdom |
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Purpose | Research |
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Objectives | 1) To monitor the performance of the Bristol Channel to update the validation of ecosystem model GEMBASE
2) To study the relationship between light, chlorophyll, primary production and fluorescence on a C.P.R route
3) To carry out deep diving trials on the Undulating Oceanographic Recorder
4) To carry out incubation experiments to determine the uptake of ammonia by phytoplankton and bacteria |
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Chief scientist | Michael B Jordan (Institute of Marine Environmental Research, Plymouth) |
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Cruise report | (0.08 MB) |
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Ocean/sea areas | |
General | English Channel Irish Sea and St. George's Channel Bay of Biscay |
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Track charts | |
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Measurements | |
Physical oceanography | |
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Surface measurements underway (T,S) | |
Transparency (eg transmissometer) | |
Other physical oceanographic measurements | Quantity: number of stations = 72 |
Chemical oceanography | |
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Nitrate | |
Contamination | |
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Suspended matter | |
Biology and fisheries | |
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Phytoplankton pigs (eg chlorophyll, fluorescence) | Description: monitoring |