Cruise inventory

RRS Discovery D204 Leg 2

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS Discovery (74E3)
Cruise identifierD204 Leg 2
Cruise period1993-10-20 — 1993-11-06
StatusCompleted
Port of departureDakar, Senegal
Port of returnLas Palmas, Spain
PurposeResearch
ObjectivesADCP, 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 scientistPeter J Herring (Institute of Oceanographic Sciences Deacon Laboratory)
Coordinating bodyIOSDL/CEC MAST
Cruise reportRRS Discovery D204 Leg 2 cruise report d204.pdf — access key 'C' (0.49 MB) 
Ocean/sea areas 
GeneralNorth East Atlantic Ocean (limit 40W)
SpecificEastern tropical and sub-tropical Atlantic
Track chartsRRS Discovery D204 Leg 2 cruise track — trk3941b.html
Measurements 
Physical oceanography 
Current profiler (eg ADCP)Description: shipborne ADCP
Biology and fisheries 
ZooplanktonQuantity: number of samples = 6
Description: taken with Longhurst Hardy plankton recorder (LHPR): macroplankton/nekton distr. & vert. migration
ZooplanktonQuantity: number of hauls = 61
Description: 49 with RMT 1+8 with (CCE) and 12 with RMT 1+8M; specimens for photobiolical studies
NeustonQuantity: number of hauls = 61
Description: 49 with RMT 1+8 with (CCE) and 12 with RMT 1+8M; specimens for photobiolical studies
NektonQuantity: number of hauls = 61
Description: 49 with RMT 1+8 with (CCE) and 12 with RMT 1+8M; specimens for photobiolical studies
Pelagic fishQuantity: number of hauls = 61
Description: 49 with RMT 1+8 with (CCE) and 12 with RMT 1+8M; specimens for photobiolical studies
Demersal fishQuantity: number of hauls = 61
Description: 49 with RMT 1+8 with (CCE) and 12 with RMT 1+8M; specimens for photobiolical studies
CrustaceansQuantity: 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 researchDescription: Trials of the RMT 1+8 system