RRS Discovery D226
Cruise summary report
| Cruise Info. | |
| Ship name (ship code) | RRS Discovery (74E3) |
| Cruise identifier | D226 |
| Cruise period | 1997-03-12 — 1997-04-10 |
| Status | Completed |
| Port of departure | Vigo, Spain |
| Port of return | Vigo, Spain |
| Purpose | Research |
| Objectives | The second of a series of five cruises to the same area within an EU MAST-funded programme (Bengal) to study seasonal changes in the Abyssal benthos. All sampling was undertaken within 10-15 nautical miles of 48° 50'N 16° 30'W. |
| Chief scientist | Anthony L Rice (Southampton Oceanography Centre) |
| Project | BENGAL/MAST III |
| Coordinating body | SOC |
| Cruise report |  (4.80 MB) |
| Ocean/sea areas | |
| General | North East Atlantic Ocean (limit 40W) |
| Specific | Porcupine Abyssal Plain |
| Measurements | |
| Physical oceanography | |
| Water bottle stations | Quantity: number of profiles = 10 Description: CTD casts with oxygen, transmission and fluorescence sensors |
| CTD stations | Quantity: number of profiles = 10 Description: CTD casts with oxygen, transmission and fluorescence sensors |
| Biology and fisheries | |
| Particulate organic matter (inc POC, PON) | Quantity: number of profiles = 6 Description: Shallow (100m) marine snow profile camera drops |
| Particulate organic matter (inc POC, PON) | Quantity: number of profiles = 2 Description: Full ocean depth (4840m) marine snow profile camera drops (on CTD) |
| Biochemical measurements (eg lipids, amino acids) | Quantity: number of deployments = 2 Description: Kasten corer |
| Biochemical measurements (eg lipids, amino acids) | Quantity: number of deployments = 14 Description: Box corer, for sediment chemistry and biology |
| Biochemical measurements (eg lipids, amino acids) | Quantity: number of deployments = 20 Description: Multiple corer, for sediment chemistry and biology |
| Zooplankton | Quantity: number of hauls = 4 Description: MOCNESS 1m2 near bottom hauls |
| Zoobenthos | Quantity: number of hauls = 3 Description: SOC semi-balloon otter trawl (OTSB) |
| Zoobenthos | Quantity: number of deployments = 20 Description: Multiple corer, for sediment chemistry and biology |
| Zoobenthos | Quantity: number of hauls = 4 Description: IFREMER beam trawl |
| Zoobenthos | Quantity: number of deployments = 2 Description: Kasten corer |
| Zoobenthos | Quantity: number of deployments = 14 Description: Box corer, for sediment chemistry and biology |
| Moorings, landers, buoys | |
| Chemical oceanography | |
| Oxygen | 48° 49' 59" N 16° 30' 0" W — Laid and recovered 5 x NIOZ lander (within 10 nmiles) |
| Biology and fisheries | |
| Biochemical measurements (eg lipids, amino acids) | 48° 49' 59" N 16° 30' 0" W — Laid and recovered 5 x DEMAR (bottom amphipod trap) and 2 x BIOFEED moorings (sediment enrichment expts) - within 10 nmiles - one lost |
| Biochemical measurements (eg lipids, amino acids) | 48° 49' 59" N 16° 30' 0" W — Laid and recovered 5 x NIOZ lander (within 10 nmiles) |
| Sediment traps | 49° 0' 0" N 16° 18' 0" W — Recovered sediment trap mooring laid Sep 1996 |
| Sediment traps | 48° 54' 59" N 16° 31' 59" W — Laid short sediment trap mooring for recovery in July 1997 (Discovery 229) |
| Sediment traps | 49° 0' 0" N 16° 18' 0" W — Laid sediment trap mooring for recovery in July 1997 (Discovery 229) |
| Benthic bacteria/micro-organisms | 48° 49' 59" N 16° 30' 0" W — Laid and recovered 5 x DEMAR (bottom amphipod trap) and 2 x BIOFEED moorings (sediment enrichment expts) - within 10 nmiles - one lost |
| Zoobenthos | 48° 55' 59" N 16° 31' 59" W — Recovered recolonisation expt (MAC) laid Sep 1996 |
| Zoobenthos | 48° 55' 59" N 16° 31' 59" W — Laid MAC for recovery in Sep-Oct 1997 |
| Zoobenthos | 48° 49' 59" N 16° 30' 0" W — Laid and recovered 5 x NIOZ lander (within 10 nmiles) |
| Zoobenthos | 48° 57' 0" N 16° 30' 59" W — Laid MAC for recovery in July 1997 (Discovery 229) |
| Zoobenthos | 48° 49' 59" N 16° 30' 0" W — Laid and recovered 4 x LATER column amphipod trap mooring (within 10 nmiles) |
| Zoobenthos | 48° 49' 59" N 16° 30' 0" W — Laid and recovered 5 x DEMAR (bottom amphipod trap) and 2 x BIOFEED moorings (sediment enrichment expts) - within 10 nmiles - one lost |
| Zoobenthos | 48° 54' 59" N 16° 33' 59" W — Laid Bathysnap for recovery in July 1997 (Discovery 229) |
| Zoobenthos | 48° 53' 59" N 16° 18' 0" W — Recovered time-lapse photography system (Bathysnap) laid Sep 1996 |
| Data held at BODC | |
| Discrete samples | |
| 20 CTD frame plus rosette sampler | Transmittance and attenuance of the water column Temperature of the water column Dissolved oxygen parameters in the water column Salinity of the water column Density of the water column Raw fluorometer output Chlorophyll pigment concentrations in water bodies |
