Cruise inventory

RRS Discovery D66

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS Discovery (74E3)
Cruise identifierD66
Cruise period1974-08-31 — 1974-09-29
Port of departureDakar, Senegal
Port of returnBarry, United Kingdom
ObjectivesThe main objectives for GATE (the GARP* Atlantic Tropical Experiment) were summarised in GATE Report No.3 as follows:
1) To provide a means of estimating the effects of smaller tropical weather systems on the large synoptic-scale circulations.
2) To facilitate the development of numerical modelling and predicting methods
Chief scientistRobert I Tait (University of Liverpool Department of Oceanography)
Cruise reportRRS Discovery D66 cruise report d66.pdf — access key 'C' (10.75 MB) 
Ocean/sea areas 
GeneralNorth Atlantic Ocean
Track chartsRRS Discovery D66 cruise track — trk1315.html RRS Discovery D66 cruise track — trk1315a.html RRS Discovery D66 cruise track — trk1315b.html
Physical oceanography 
Surface measurements underway (T,S)Quantity: track kilometres = 4074
BathythermographQuantity: number of profiles = 2
CTD stations
Subsurface temperature and salinity measurementsQuantity: track kilometres = 1667
Description: batfish
Current metersQuantity: 3
Description: 18 days E1-mooring:08-40.8N;22-58.2W(19d.),E3-mooring:08-41.92N;23-10.03W(25d.)& E1-spar:08-40.8N;22-58.2W(9d.)
Currents measured from ship driftQuantity: activity duration in days = 15
Neutrally buoyant floats
Instrumented wave measurementsQuantity: 38
Description: SBWR records
Other physical oceanographic measurementsQuantity: 32
Description: protas(free fall shear probe)
Biology and fisheries 
ZooplanktonQuantity: number of hauls = 7
Description: survey 7 hauls between 300/600 m.long-term study of meso-pelagic fauna
NektonQuantity: number of hauls = 7
Description: Made between 300/600 m. long-term study of meso-pelagic fauna
Incident radiationDescription: cont.logging solarimeter
Routine standard measurementsDescription: 6 hrly.
Other meteorological measurementsDescription: 2 min.values of dry and wet bulb temp.,hull temp.,wind and atm.pressure
Other meteorological measurementsQuantity: 2
Description: met.packages on 2 anchored buoys air sea interface studies
Other meteorological measurementsDescription: all-sky photographs and photographic balloon tracking
Geology and geophysics 
Multi-beam echosoundingQuantity: track kilometres = 3704