RRS John Murray JM20/79
Cruise summary report
| Cruise Info. | |
| Ship name (ship code) | RRS John Murray (74MJ) |
| Cruise identifier | JM20/79 |
| Cruise period | 1979-12-05 — 1979-12-17 |
| Status | Completed |
| Port of departure | Barry, United Kingdom |
| Port of return | Barry, United Kingdom |
| Purpose | Research |
| Objectives | 1) To test the assertion that mean currents in the uppermost few metres of the wave field can be measured adequately using vector-averaging current sensors mounted on a moored surface following bouy
2) To test an experimental mooring designed for this purpose, and to investigate its suitability for mooring arrays of pitch/rool wave bouys 3) to see whether the technique provides sufficient accuracy for shear to be detected in the near surface region 4) to provide further testing for the vector averagineg electromagnetic current meter recently developed at IOS |
| Chief scientist | Peter G Collar (Institute of Oceanographic Sciences Wormley Laboratory) |
| Cruise report |  (0.22 MB) |
| Ocean/sea areas | |
| General | Inner Seas off the West Coast of Scotland |
| Track charts |  |
| Measurements | |
| Physical oceanography | |
| Current meters | Quantity: number of stations = 1 Description: 4 current meters, durations various, from 2 to 6 weeks. |
| Meteorology | |
| Routine standard measurements | Description: synoptic,usually hourly or 3-hourly. |
| Other meteorological measurements | Description: ship-borne wave recorder.3 records of 20 minutes, 1 of 12 minutes. |
| Other meteorological measurements | Description: sea and swell |
