Cruise inventory

RRS Discovery D222B

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS Discovery (74E3)
Cruise identifierD222B
Cruise period1996-08-29 — 1996-09-24
StatusCompleted
Port of departureSouthampton, United Kingdom
Port of returnFalmouth, United Kingdom
PurposeResearch
ObjectivesThe first of a series of cruises to the same area involving 17 European Partners funded under an EU contract (BENGAL). General objective: study of seasonal changes in organic and inorganic fluxes to deep-sea floor and the benthic processes affecting its incorporation in sediments.
Main cruise tasks:
1. Recover and redeploy long-term moorings (Sed. Trap; Bathysnap, MAC)
2. Deploy and recover short-term moorings (NIOZ Lander, Sediment Traps, .Amphipod Traps, Bathysnack, Biofeed).
3. Obtain series of benthic samples and photographs (multiple corer, box corer, OTSB, Wasp).
4. Water column observations with CTD (water collection, marine snow profiling camera).
Chief scientistAnthony L Rice (Southampton Oceanography Centre)
ProjectBENGAL
Coordinating bodySOC
Cruise reportRRS Discovery D222B cruise report d222b.pdf — access key 'C' (6.39 MB) 
Ocean/sea areas 
GeneralNorth East Atlantic Ocean (limit 40W)
SpecificPorcupine Abyssal Plain
Measurements 
Physical oceanography 
Water bottle stationsQuantity: number of profiles = 10
Description: CTD with 10 L water bottles and marine snow profiling camera
CTD stationsQuantity: number of profiles = 10
Description: CTD with 10 L water bottles and marine snow profiling camera
Biology and fisheries 
Particulate organic matter (inc POC, PON)Quantity: number of hauls = 3
Description: SAPS (stand alone pump systems) water filtered at variety of levels from near surface to near bottom (at 4840m)
Pelagic bacteria/micro-organismsQuantity: number of hauls = 3
Description: SAPS (stand alone pump systems) water filtered at variety of levels from near surface to near bottom (at 4840m)
Benthic bacteria/micro-organismsQuantity: number of deployments = 15
Description: Multiple corer (12 cores each drop) - for heiofauna, sediment chemistry, O2, bacteria
ZoobenthosQuantity: number of deployments = 14
Description: Spade box core (macrofauna and sediment chemistry)
ZoobenthosQuantity: number of hauls = 6
Description: WASP (wide angle seafloor photography) system - 2 with video camera
ZoobenthosQuantity: number of hauls = 14
Description: OTSB (otter trawl - semi balloon)
ZoobenthosQuantity: number of deployments = 15
Description: Multiple corer (12 cores each drop) - for heiofauna, sediment chemistry, O2, bacteria
Moorings, landers, buoys 
Physical oceanography 
Current meters48° 57' 59" N  16° 19' 59" W — Recovered and relaid time-lapse sea-floor photographic system (Bathysnap) - originally laid Sep 1995
Current meters48° 52' 59" N  16° 18' 59" W — Deployment and recovery of baited camera (Bathysnack)
Chemical oceanography 
Oxygen48° 49' 59" N  16° 30' 0" W — 4 deployments and recoveries of NIOZ Lander
Biology and fisheries 
Particulate organic matter (inc POC, PON)49° 0' 28" N  16° 18' 0" W — Relaid sediment trap mooring - traps at 100m, 3000m and 100 mab
Particulate organic matter (inc POC, PON)48° 54' 59" N  16° 33' 59" W — 2 deployments and recoveries of short term sediment trap (c 30 mab)
Particulate organic matter (inc POC, PON)48° 55' 59" N  16° 36' 0" W — Deployment and recovery of enrichment module (Biofeed)
Particulate organic matter (inc POC, PON)49° 0' 0" N  16° 21' 0" W — Recovered sediment trap mooring (laid Sep 1995) - traps at 100m, 3000m and 100 mab
Sediment traps48° 54' 59" N  16° 33' 59" W — 2 deployments and recoveries of short term sediment trap (c 30 mab)
Sediment traps49° 0' 28" N  16° 18' 0" W — Relaid sediment trap mooring - traps at 100m, 3000m and 100 mab
Sediment traps49° 0' 0" N  16° 21' 0" W — Recovered sediment trap mooring (laid Sep 1995) - traps at 100m, 3000m and 100 mab
Zoobenthos48° 52' 59" N  16° 18' 59" W — Deployment and recovery of baited camera (Bathysnack)
Zoobenthos48° 55' 59" N  16° 36' 0" W — Deployment and recovery of enrichment module (Biofeed)
Zoobenthos48° 49' 59" N  16° 30' 0" W — 4 deployments and recoveries of NIOZ Lander
Zoobenthos48° 57' 59" N  16° 19' 59" W — Recovered and relaid time-lapse sea-floor photographic system (Bathysnap) - originally laid Sep 1995
Zoobenthos48° 47' 59" N  16° 28' 59" W — 2 deployments and recoveries of amphipod trap
Zoobenthos48° 55' 59" N  16° 31' 59" W — Laid Module Autonome de Colonisation (MAC)
Data held at BODC 
Discrete samples 
16  CTD frame plus rosette samplerDensity of the water column
Transmittance and attenuance of the water column
Raw fluorometer output
Salinity of the water column
Temperature of the water column
Dissolved oxygen parameters in the water column