RRS Discovery D149

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS Discovery (74E3)
Cruise identifierD149
Cruise period1984-06-15 — 1984-07-10
Port of departureFunchal, Portugal
Port of returnNorth Shields, United Kingdom
Objectives1. To obtain sediment and pore water samples from five designated stations within the study area.
2. To supplement this by deeper sampling at the same station using the IOS piston corer.
3. To make shipboard analytical studies on this material in order to define the chemical (redox) state of the sedimentary environment, and its variation with depth and position within the study area. To return samples for laboratory study.
4. To test the modified PUPPI and to make a long term deployment of this device.
5. An attempt to obtain sediment from a site just north of the study area where manganese incrustations have been reported.
6. Surficial sediment dissolved oxygen profiles in the abyssal Atlantic off the Porcupine Sea Bight. This relates to existing IOS biological studies in this area and to a need to obtain reference data to compare with the GME information.
Chief scientistT Roger S Wilson (Institute of Oceanographic Sciences Wormley Laboratory)
Cruise reportRRS Discovery D149 cruise report d149.pdf (0.49 MB) 
Ocean/sea areas 
GeneralNorth East Atlantic Ocean (limit 40W)
SpecificMadeira Abyssal Plain
Track chartsRRS Discovery D149 cruise track — trk3168.html
Routine standard measurements
Geology and geophysics 
Core - soft bottomQuantity: number of cores = 20
Other geological/geophysical measurementsQuantity: number of samples = 160
Description: pore waters
Data held at BODC 
Discrete samples 
1  Piston corer