- Resources
- Inventories
- Cruise inventory
- Report
- 4389
RRS Discovery D231
Cruise summary report
Cruise Info. | |
Ship name (ship code) | RRS Discovery (74E3) |
Cruise identifier | D231 |
Cruise period | 1998-02-28 — 1998-03-30 |
Status | Completed |
Port of departure | Southampton, United Kingdom |
Port of return | Southampton, United Kingdom |
Purpose | Research |
Objectives | The fifth of a series of cruises to the same area over a two-year period, involving 17 European partners funded under an EC (MAST III) contract - BENGAL. General objective: study of seasonal changes in organic and inorganic fluxes to deep-sea floor and the benthic processes affecting incorporation in sediments.
Main tasks: 1. Recover and redeploy sediment traps, bathysnap, MAC, MAP 2. Deploy and recover short-term moorings (Goteborg lander, Biofeed, Moored SAPS). 3. Obtain benthic samples and photographs (multiple core, box core, OTSB, Chalut, EPS, Sledge, Lotus, SPI). 4. Water column sampling/data - CTD and Rosette water sampler. |
Chief scientist | Anthony L Rice (Southampton Oceanography Centre) |
Project | BENGAL/MAST III |
Coordinating body | SOC |
Cruise report | (6.30 MB) |
Ocean/sea areas | |
General | North East Atlantic Ocean (limit 40W) |
Specific | Goban Spur |
Measurements | |
Physical oceanography | |
CTD stations | Quantity: number of profiles = 10 Description: CTD for water column characterisation and water collection |
Biology and fisheries | |
Particulate organic matter (inc POC, PON) | Quantity: number of profiles = 1 Description: Moored SAPS (stand alone pumps) |
Pelagic bacteria/micro-organisms | Quantity: number of profiles = 1 Description: Moored SAPS (stand alone pumps) |
Benthic bacteria/micro-organisms | Quantity: number of deployments = 15 Description: Multiple corer drops (12 cores each drop) - for meiofauna, sed. chem., O2, bacteria |
Zoobenthos | Quantity: number of deployments = 17 Description: Spade box core (macrofauna and sed. chem.) |
Zoobenthos | Quantity: number of hauls = 1 Description: Epibenthic sledge and video camera |
Zoobenthos | Quantity: number of hauls = 4 Description: Beam trawls |
Zoobenthos | Quantity: number of deployments = 2 Description: Easten corer - for sediment radio chemistry |
Zoobenthos | Quantity: number of deployments = 15 Description: Multiple corer drops (12 cores each drop) - for meiofauna, sed. chem., O2, bacteria |
Zoobenthos | Quantity: number of hauls = 6 Description: OTSB (otter trawl - semi balloon) |
Moorings, landers, buoys | |
Physical oceanography | |
Current meters | 48° 58' 59" N 16° 12' 59" W — Relaid time-lapse seafloor photographic system |
Current meters | 48° 57' 59" N 16° 11' 59" W — Recovered time-lapse seafloor photographic system (originally laid 26/07/97 |
Chemical oceanography | |
Oxygen | 48° 49' 59" N 16° 30' 0" W — Deploy and recover Goteborg lander |
Biology and fisheries | |
Particulate organic matter (inc POC, PON) | 48° 58' 59" N 16° 13' 59" W — Relaid sediment trap mooring traps at 1000m, 3000m and 100 m.a.b. |
Particulate organic matter (inc POC, PON) | 49° 0' 0" N 16° 12' 59" W — Recovered sediment trap mooring traps at 1000m, 3000m and 100 m.a.b. (originally laid 26/07/97) |
Sediment traps | 49° 0' 0" N 16° 12' 59" W — Recovered sediment trap mooring traps at 1000m, 3000m and 100 m.a.b. (originally laid 26/07/97) |
Sediment traps | 48° 58' 59" N 16° 13' 59" W — Relaid sediment trap mooring traps at 1000m, 3000m and 100 m.a.b. |
Zoobenthos | 48° 53' 59" N 16° 24' 59" W — Deploy and recover enrichment module (Biofeed) |
Zoobenthos | 48° 54' 59" N 16° 27' 59" W — Laid MAC mooring for recovery October 1998 |
Zoobenthos | 48° 55' 59" N 16° 25' 59" W — Laid MAP mooring for recovery October 1998 |
Zoobenthos | 48° 58' 59" N 16° 12' 59" W — Relaid time-lapse seafloor photographic system |
Zoobenthos | 48° 49' 59" N 16° 30' 0" W — Deploy and recover Goteborg lander |
Zoobenthos | 48° 57' 59" N 16° 11' 59" W — Recovered time-lapse seafloor photographic system (originally laid 26/07/97 |
Data held at BODC | |
Discrete samples | |
9 CTD frame plus rosette sampler | Transmittance and attenuance of the water column Salinity of the water column Temperature of the water column Dissolved oxygen parameters in the water column Density of the water column Raw fluorometer output |