RRS Discovery D129

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS Discovery (74E3)
Cruise identifierD129
Cruise period1982-05-29 — 1982-06-22
Port of departureAbidjan, Côte d'Ivoire
Port of returnSanta Cruz de Tenerife, Spain
Objectives1. To investigate early diagenetic processes, especially denitrification, in sediment profiles from the equatorial Atlantic high productivity zone obtained by coring.
2. To obtain carbonate saturation data from the pore waters of similar geochemical provenance but differing depths.
3. To sample sediments and pore waters in the CV2 and GME areas as part of the international high level nuclear waste disposal evaluation programme, with special emphasis on redox-related phenomena.
4. To continue in situ filtration tests in the water column, and to obtain preliminary data using this equipment.
5. To conduct a programme of water column sampling in conjunction with the in situ filtration experiments, especially concentrating on manganese distribution.
Chief scientistT Roger S Wilson (Institute of Oceanographic Sciences Wormley Laboratory)
Cruise reportRRS Discovery D129 cruise report d129.pdf (0.39 MB) 
Ocean/sea areas 
GeneralNorth East Atlantic Ocean (limit 40W)
SpecificGulf of Guinea
Track chartsRRS Discovery D129 cruise track — trk2862.html
Physical oceanography 
CTD stationsQuantity: number of stations = 14
Chemical oceanography 
OxygenQuantity: number of stations = 14
PhosphateQuantity: number of stations = 14
NitrateQuantity: number of stations = 14
SilicateQuantity: number of stations = 14
AlkalinityQuantity: number of stations = 14
Trace elementsQuantity: number of stations = 14
Routine standard measurements
Geology and geophysics 
Core - soft bottomQuantity: number of cores = 15
Description: Ten Kasten cores and five box cores to sample intensively for sediment and pore waters.
Other geological/geophysical measurementsQuantity: number of samples = 9
Description: pore water samples