Cruise Info. | |
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Ship name (ship code) | RRS John Murray (74MJ) |
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Cruise identifier | JM16/75 (B/11/75) |
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Cruise period | 1975-11-13 — 1975-11-16 |
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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 | Eric I Hamilton (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 measurements = 17 |
Water bottle stations | Quantity: number of stations = 9 Description: S surface only |
Transparency (eg transmissometer) | Quantity: number of samples = 16 |
Current meters | Description: 1 hour |
Currents measured from ship drift | Quantity: activity duration in days = 3 |
Sea level (inc. bot. press., inverted echosounder) | Quantity: activity duration in hours = 40 |
Chemical oceanography | |
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Trace elements | Quantity: number of samples = 17 |
Contamination | |
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Suspended matter | Quantity: number of samples = 17 |
Trace metals | Quantity: number of samples = 17 |
Biology and fisheries | |
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Phytoplankton | Quantity: number of samples = 2 |
Zooplankton | Quantity: number of samples = 2 Description: identification,distribution,description |
Benthic bacteria/micro-organisms | Quantity: number of samples = 14 |
Meteorology | |
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Occasional standard measurements | Quantity: number of measurements = 4 |
Atmospheric chemistry | Quantity: number of samples = 4 Description: Air particulates |
Other meteorological measurements | Description: air sea inteface studies |
Other meteorological measurements | Quantity: number of observations = 17 Description: sea and swell |
Geology and geophysics | |
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Grab | Quantity: number of samples = 2 Description: physical/chemical analysis of sediments |
Core - soft bottom | Quantity: number of cores = 16 Description: physical/chemical analysis of sediments |
In-situ seafloor measurement/sampling | Quantity: number of measurements = 18 Description: radioactivity msmnts. |