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RRS Discovery D204 Leg 2
Cruise summary report
Cruise Info. | |
Ship name (ship code) | RRS Discovery (74E3) |
Cruise identifier | D204 Leg 2 |
Cruise period | 1993-10-20 — 1993-11-06 |
Status | Completed |
Port of departure | Dakar, Senegal |
Port of return | Las Palmas, Spain |
Purpose | Research |
Objectives | ADCP, bioacoustics, Longhurst-Hardy Plankton Recorder and Remote Mid-water Trawl net sampling survey of a box bounded by 17-25N, 17-20W. Samples taken: 6 Longhurst Hardy plankton recorder (LHPR) 49 rectangle midwater trawl 1m2 + 8m2 (RMT 1+8) 1+8 with closing cod end (CCE) 12 rectangle midwater trawl 1m2 + multiple 8m2 (RMT 1+8M). |
Chief scientist | Peter J Herring (Institute of Oceanographic Sciences Deacon Laboratory) |
Coordinating body | IOSDL/CEC MAST |
Cruise report | (0.49 MB) |
Ocean/sea areas | |
General | North East Atlantic Ocean (limit 40W) |
Specific | Eastern tropical and sub-tropical Atlantic |
Track charts | |
Measurements | |
Physical oceanography | |
Current profiler (eg ADCP) | Description: shipborne ADCP |
Biology and fisheries | |
Zooplankton | Quantity: number of samples = 6 Description: taken with Longhurst Hardy plankton recorder (LHPR): macroplankton/nekton distr. & vert. migration |
Zooplankton | Quantity: number of hauls = 61 Description: 49 with RMT 1+8 with (CCE) and 12 with RMT 1+8M; specimens for photobiolical studies |
Neuston | Quantity: number of hauls = 61 Description: 49 with RMT 1+8 with (CCE) and 12 with RMT 1+8M; specimens for photobiolical studies |
Nekton | Quantity: number of hauls = 61 Description: 49 with RMT 1+8 with (CCE) and 12 with RMT 1+8M; specimens for photobiolical studies |
Pelagic fish | Quantity: number of hauls = 61 Description: 49 with RMT 1+8 with (CCE) and 12 with RMT 1+8M; specimens for photobiolical studies |
Demersal fish | Quantity: number of hauls = 61 Description: 49 with RMT 1+8 with (CCE) and 12 with RMT 1+8M; specimens for photobiolical studies |
Crustaceans | Quantity: number of hauls = 61 Description: 49 with RMT 1+8 with (CCE) and 12 with RMT 1+8M; specimens for photobiolical studies |
Acoustic reflection on marine organisms. | Quantity: number of samples = 6 Description: taken with Longhurst Hardy plankton recorder (LHPR): macroplankton/nekton distr. & vert. migration |
Gear research | Description: Trials of the RMT 1+8 system |