RRS Discovery D161
Cruise summary report
| Cruise Info. | |
| Ship name (ship code) | RRS Discovery (74E3) |
| Cruise identifier | D161 |
| Cruise period | 1986-08-15 — 1986-09-19 |
| Status | Completed |
| Port of departure | Falmouth, United Kingdom |
| Port of return | Funchal, Portugal |
| Purpose | Research |
| Objectives | 1. To study the ocean-continent transition zone on the western margin of Portugal.
2. To study the Azores-Gibraltar plate-boundary and past plate-boundaries of the Iberian Plate. 3. To conduct experiments east of Madeira to characterise the seismic properties of the upper 1000m of sediment. |
| Chief scientist | Robert B Whitmarsh (Institute of Oceanographic Sciences Wormley Laboratory) |
| Cruise report |  (0.66 MB) |
| Ocean/sea areas | |
| General | North East Atlantic Ocean (limit 40W) |
| Specific | North Atlantic |
| Track charts |  |
| Measurements | |
| Physical oceanography | |
| Bathythermograph | Quantity: number of profiles = 6 |
| Geology and geophysics | |
| Single-beam echosounding | Quantity: track kilometres = 2400 Description: GLORIA,3.5 KHZ instrument |
| Multi-beam echosounding | Quantity: track kilometres = 4800 |
| Long/short range side scan sonar | Quantity: track kilometres = 3600 Description: Geological long range inclined asolic,(GLORIA) |
| Single channel seismic reflection | Quantity: track kilometres = 2700 |
| Seismic refraction | Quantity: number of deployments = 50 Description: 19 digital ocean bottom seismographs (DOBS) deployed,6 disposable sonobuoys deployed |
| Gravity measurements | Quantity: track kilometres = 5556 |
| Magnetic measurements | Quantity: track kilometres = 2778 |
