RRS Discovery D99

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS Discovery (74E3)
Cruise identifierD99
Cruise period1979-01-16 — 1979-01-27
Port of departureCape Town, South Africa
Port of returnCape Town, South Africa
Objectives1. The collection of large volume water samples for analyses of selected trace metals and nutrients.
2. The collection of samples of suspended particulate material from large-volume water samples for geochemical studies.
3. The collection of integrated samples of settling particulate material by a particle trap.
4. The collection of bottom sediment samples, by gravity- and box-coring for geochemical studies.
5. The collection of a series of sediment pore water samples by in-situ techniques and by squeezing cored sediments.
6. The collection of near-surface and surface plankton samples for biochemical studies.
7. The collection of samples of the sea-surface microlayer for geochemical and biochemical studies.
Chief scientistStephen E Calvert (Institute of Oceanographic Sciences Wormley Laboratory)
Cruise reportRRS Discovery D99 cruise report d99.pdf (0.38 MB) 
Ocean/sea areas 
GeneralSouth East Atlantic Ocean (limit 20W)
Track chartsRRS Discovery D99 cruise track — trk2443.html
Physical oceanography 
Water bottle stationsQuantity: number of stations = 5
Chemical oceanography 
OxygenQuantity: 5
PhosphateQuantity: 5
Total - PQuantity: 5
SilicateQuantity: 5
Trace elementsQuantity: 5
Other chemical oceanographic measurementsDescription: chemical analysis of sediments
Biology and fisheries 
Routine standard measurementsDescription: measurements for ship)
Geology and geophysics 
Core - soft bottomQuantity: number of cores = 11
Multi-beam echosoundingQuantity: track kilometres = 2037
Other geological/geophysical measurementsDescription: sediment pore waters