Cruise summary report
Cruise Info. | |
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Ship name (ship code) | RRS John Murray (74MJ) |
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Cruise identifier | JM7/81 |
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Cruise period | 1981-06-13 — 1981-06-24 |
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Status | Completed |
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Port of departure | Immingham, United Kingdom |
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Port of return | Dundee, United Kingdom |
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Objectives | 1) To recover 24 moorings previously deployed during cruise 5/81.
2) To carry out a CTD and surface water sampling survey.
3) Redeploy one mooring adjacent to the Haisborough light vessel.
4) Evaluate the performance of a new surface marker buoy, a side scan sensor to aid rig recovery, and an overside sensor pack for surface water sampling. |
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Chief scientist | Alan J Harrison (Institute of Oceanographic Sciences Bidston Laboratory) |
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Cruise report | (1.22 MB) |
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Ocean/sea areas | |
General | North Sea |
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Specific | UK coastal waters |
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Track charts | |
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Measurements | |
Physical oceanography | |
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Surface measurements underway (T,S) | Quantity: activity duration in days = 12 |
CTD stations | Quantity: number of stations = 100 |
Current meters | Description: 24 c.m.;12 days |
Sea level (inc. bot. press., inverted echosounder) | Quantity: activity duration in days = 12 |
Biology and fisheries | |
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Gear research | Description: acoustic trials, sidescan sonar tests, new overside sensor pack tested. |