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RRS Discovery D222A
Cruise summary report
Cruise Info. | |
Ship name (ship code) | RRS Discovery (74E3) |
Cruise identifier | D222A |
Cruise period | 1996-07-27 — 1996-08-26 |
Status | Completed |
Port of departure | Southampton, United Kingdom |
Port of return | Southampton, United Kingdom |
Purpose | Research |
Objectives | This was an instrumentation development cruise sponsored by the EU MAST III Programme, ALIPOR: Autonomous Lander Instrument Packaged for Oceanographic Research.
The aim was to deploy arrays of landers on the sea floor to monitor physical, geochemical and biological processes in the deep sea benthic boundary layer. |
Chief scientist | Imants G Priede (University of Aberdeen, Oceanlab) |
Project | ALIPOR |
Coordinating body | University of Aberdeen |
Cruise report | (1.15 MB) |
Ocean/sea areas | |
General | North East Atlantic Ocean (limit 40W) |
Specific | Goban Spur, Porcupine Abyssal Plain |
Measurements | |
Physical oceanography | |
Bathythermograph | Quantity: number of profiles = 7 Description: CTD |
Biology and fisheries | |
Biochemical measurements (eg lipids, amino acids) | Quantity: number of deployments = 5 Description: IFREMER RAP2 lander - sediment interface oxygen consumption and fluxes |
Biochemical measurements (eg lipids, amino acids) | Quantity: number of deployments = 5 Description: GEOMAR free-fall respirometer - sediment interface oxygen consumption and fluxes |
Biochemical measurements (eg lipids, amino acids) | Quantity: number of deployments = 6 Description: Goteburg lander - sediment interface and fluxes |
Demersal fish | Quantity: number of deployments = 11 Description: Fish and amphipod trap - free-fall with acoustic release |
Demersal fish | Quantity: number of deployments = 7 Description: AVDOS II baited camera and fish tracking system |
Crustaceans | Quantity: number of deployments = 11 Description: Fish and amphipod trap - free-fall with acoustic release |
Other biological/fisheries measurement | Quantity: number of deployments = 6 Description: Goteburg lander - sediment interface and fluxes |
Other biological/fisheries measurement | Quantity: number of deployments = 5 Description: GEOMAR free-fall respirometer - sediment interface oxygen consumption and fluxes |
Other biological/fisheries measurement | Quantity: number of deployments = 5 Description: IFREMER RAP2 lander - sediment interface oxygen consumption and fluxes |
Geology and geophysics | |
Bottom photography | Quantity: number of deployments = 16 Description: Sediment profile imagery up to 16 images per drop to a depth of 30cm beneath sediment surface |
Moorings, landers, buoys | |
Physical oceanography | |
Transparency (eg transmissometer) | 48° 55' 59" N 16° 30' 59" W — MAP: Module Autonome Pluri disciplinaire - one year deployment |
Current meters | 48° 55' 59" N 16° 30' 59" W — MAP: Module Autonome Pluri disciplinaire - one year deployment |
Biology and fisheries | |
Other biological/fisheries measurement | 48° 42' 0" N 16° 37' 59" W — ATTIS: Acoustic Telemetry and Transponder Interrogation System - 4 landers deployed to track fish - recovered after 13 days |
Other biological/fisheries measurement | 48° 36' 0" N 16° 9' 59" W — LAFF: Large Abyssal Food-Fall experiment - deployed and recovered after 10 days - dolphin carcass |
Data held at BODC | |
Discrete samples | |
7 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 |