RRS John Murray JM10/69
Cruise summary report
| Cruise Info. | |
| Ship name (ship code) | RRS John Murray (74MJ) |
| Cruise identifier | JM10/69 |
| Cruise period | 1969-12-03 — 1969-12-18 |
| Status | Completed |
| Port of departure | Barry, United Kingdom |
| Port of return | Barry, United Kingdom |
| Purpose | Research |
| 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 |
| Chief scientist | Maxwell R Dobson (University of Wales Aberystwyth Department of Geology) |
| Cruise report |  (0.62 MB) |
| Ocean/sea areas | |
| General | Irish Sea and St. George's Channel |
| Specific | St George's Channel |
| Measurements | |
| Biology and fisheries | |
| Other biological/fisheries measurement | |
| Geology and geophysics | |
| Other geological/geophysical measurements |
