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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 |