RRS John Murray JM5/72 Leg2
Cruise summary report
| Cruise Info. | |
| Ship name (ship code) | RRS John Murray (74MJ) |
| Cruise identifier | JM5/72 Leg2 |
| Cruise period | 1972-04-01 — 1972-04-12 |
| Status | Completed |
| Port of departure | Oban, United Kingdom |
| Port of return | Barry, United Kingdom |
| Purpose | Research |
| Objectives | Intensive geological and geophysical survey, including 5 seismic refraction lines, of the Hebridean continental margin and adjacent Rockall Trough of 57° - 58degN. Coring and dredging carried out and magnetometer, sparker and echo-sounder and side-scan records obtained. Seismic equipment was also tested. |
| Chief scientist | M Beney (Research Vessel Services) |
| Cruise report |  (0.39 MB) |
| Ocean/sea areas | |
| General | Inner Seas off the West Coast of Scotland North East Atlantic Ocean (limit 40W) |
| Specific | Hebrides and Rockall Torugh |
| Track charts | (0.06 MB) |
| Measurements | |
| Physical oceanography | |
| Surface drifters/drifting buoys | Quantity: number of recoveries = 2 Description: dahn buoy and sonobuoy |
| Surface drifters/drifting buoys | Quantity: number of deployments = 2 Description: dahn buoy and sonobuoy |
| Biology and fisheries | |
| Gear research | Description: maintenance and testing of sonobuoys, Plessey current meter and bottom camera |
| Geology and geophysics | |
| Dredge | Quantity: number of stations = 3 Description: sediment samples |
| Grab | Quantity: number of stations = 1 Description: sediment samples |
| Core - soft bottom | Quantity: number of stations = 8 Description: gravity |
| Single channel seismic reflection | Description: seismic lines: airgun, sparker, magnetometer |
| Gravity measurements | Description: seismic lines: airgun, sparker, magnetometer |
| Magnetic measurements | Description: seismic lines: airgun, sparker, magnetometer |
