Cruise summary report
Cruise Info. | |
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Ship name (ship code) | RRS John Murray (74MJ) |
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Cruise identifier | JM10/69 |
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Cruise period | 1969-12-03 — 1969-12-18 |
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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 | The main objective was to obtain an network of closely space geophysical runs in St. George's Channel with bottom samples. It was intended to obtain from the geophysical survey a 3D picture of the superficial cover and the patterns of the sea bed sediment movement. Collect samples of the sea bed on a grid pattern using dredges and grabs principally to study sediment type. Obtain box cores as part of a programme to study geotechnical properties of the boulder clay and recent sediments.
Secondary objectives were: to make a gravity survey of Tremadoc bay; to make a sparker traverse; to make geophysical runs; to collect bottom samples |
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Chief scientist | Maxwell R Dobson (University of Wales Aberystwyth Department of Geology) |
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Cruise report | (0.62 MB) |
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Ocean/sea areas | |
General | Irish Sea and St. George's Channel |
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Specific | St George's Channel |
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Measurements | |
Biology and fisheries | |
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Other biological/fisheries measurement | |
Geology and geophysics | |
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Other geological/geophysical measurements | |