Cruise Info. | |
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Ship name (ship code) | RRS John Murray (74MJ) |
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Cruise identifier | JM7A/75 (B/6/75) |
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Cruise period | 1975-05-08 — 1975-05-14 |
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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 | Bristol Channel survey |
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Chief scientist | Ian Joint (Institute of Marine Environmental Research, Plymouth) |
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Ocean/sea areas | |
General | Bristol Channel |
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Track charts | |
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Measurements | |
Physical oceanography | |
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Surface measurements underway (T,S) | Quantity: number of stations = 4 |
Water bottle stations | Quantity: number of stations = 10 Description: surface only |
Transparency (eg transmissometer) | Quantity: number of stations = 4 |
Chemical oceanography | |
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Phosphate | Quantity: number of stations = 4 |
Total - P | Quantity: number of stations = 4 |
Nitrate | Quantity: number of stations = 4 |
Nitrite | Quantity: number of stations = 4 |
Silicate | Quantity: number of stations = 4 |
Contamination | |
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Suspended matter | Quantity: number of stations = 4 |
Biology and fisheries | |
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Primary productivity | Quantity: number of stations = 11 |
Phytoplankton pigs (eg chlorophyll, fluorescence) | Quantity: number of stations = 11 |
Particulate organic matter (inc POC, PON) | Quantity: number of stations = 11 |
Biochemical measurements (eg lipids, amino acids) | Quantity: number of stations = 11 |
Phytoplankton | Quantity: number of stations = 11 |
Zooplankton | Quantity: number of stations = 11 Description: physiology |
Pelagic bacteria/micro-organisms | Quantity: number of stations = 11 |
Zoobenthos | Quantity: number of stations = 1 Description: identification,description of communities |
Geology and geophysics | |
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Dredge | Quantity: number of deployments = 1 |
Grab | Quantity: number of samples = 9 Description: chemical analysis of sediments |
Data held at BODC | |
Discrete samples | |
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11 General station with STD/bottles/additional instruments | Salinity of the water column Temperature of the water column Phaeopigment concentrations in the water column Chlorophyll pigment concentrations in water bodies
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