RRS John Murray JM8/68 Leg 1
Cruise summary report
| Cruise Info. | |
| Ship name (ship code) | RRS John Murray (74MJ) |
| Cruise identifier | JM8/68 Leg 1 |
| Cruise period | 1968-06-29 — 1968-07-12 |
| Status | Completed |
| Port of departure | Plymouth, United Kingdom |
| Port of return | Lerwick, United Kingdom |
| Purpose | Research |
| Objectives | Main objectives:
1. To investigate the geological and crustal structure of the continental shelf and margin to the north-west of the Orkney and Shetland Islands, including traverses using gravimeter, magnetometer and seismic profiling. 2. To continue investigation of the Winch started in 1967 3. To test airgun profiling system. |
| Chief scientist | Martin H P Bott (University of Durham, Department of Geological Sciences) |
| Cruise report |  (0.28 MB) |
| Ocean/sea areas | |
| General | North Sea Inner Seas off the West Coast of Scotland North East Atlantic Ocean (limit 40W) |
| Specific | The Minch, and the seas around Orkney, Shetland and the Faeroe Islands |
| Track charts | (0.02 MB) |
| Measurements | |
| Geology and geophysics | |
| Single channel seismic reflection | Quantity: number of profiles = 4 Description: traverses - gravimeter, magnetometer and sparker: of the Minch, 2 part shelf survey and an Orkneys-Faroe traverse |
| Gravity measurements | Quantity: number of profiles = 1 Description: gravity and magentometer line |
| Gravity measurements | Quantity: number of observations = 1 Description: gravimeter base |
| Gravity measurements | Quantity: number of profiles = 4 Description: traverses - gravimeter, magnetometer and sparker: of the Minch, 2 part shelf survey and an Orkneys-Faroe traverse |
| Magnetic measurements | Quantity: number of profiles = 4 Description: traverses - gravimeter, magnetometer and sparker: of the Minch, 2 part shelf survey and an Orkneys-Faroe traverse |
| Magnetic measurements | Quantity: number of profiles = 1 Description: gravity and magentometer line |
