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RRS Discovery D251T
Cruise summary report
Cruise Info. | |
Ship name (ship code) | RRS Discovery (74E3) |
Cruise identifier | D251T |
Cruise period | 2001-03-31 — 2001-04-09 |
Status | Completed |
Port of departure | Newport, United Kingdom |
Port of return | Southampton, United Kingdom |
Purpose | Trials |
Objectives | Following a refit of Discovery, the cruise was intended as a shakedown of ship-fitted instrumentation and systems, for the testing of instrumentation recently included within the National Marine Equipment Pool and training of UKORS technicians. Two science activities were also included: the utilisation of an Autonomous Nutrient Analyser; and the deployment of a sediment trap mooring on the Porcupine Abyssal Plain. Despite weather downtime, most activities were achieved and the two science activities were successful. |
Chief scientist | Edward B Cooper (United Kingdom Ocean Research Services) |
Cruise report | (0.36 MB) |
Ocean/sea areas | |
General | North East Atlantic Ocean (limit 40W) |
Specific | Western Approaches and Porcupine Abyssal Plain |
Track charts | (0.09 MB) |
Measurements | |
Physical oceanography | |
Surface measurements underway (T,S) | Quantity: activity duration in days = 8 Description: underway measurements T, S, fluorescence & transmissometer |
CTD stations | Quantity: number of profiles = 9 Description: with oxygen, aquatracker fluorometer and transmissometer. Various depths from 100 - 4522 m |
Current profiler (eg ADCP) | Quantity: activity duration in days = 8 Description: vessel mount ADCP using 75 k Hz phased array and 150 k Hz RDI |
Chemical oceanography | |
Oxygen | Quantity: number of profiles = 9 Description: with oxygen, aquatracker fluorometer and transmissometer. Various depths from 100 - 4522 m |
Nitrate | Quantity: number of samples = 34 Description: from the non-toxic supply for subsequent laboratory analysis |
Nitrate | Quantity: number of measurements = 850 Description: of nitrate from 5 days of data recorded by a WS Autonomous Nutrient Analyser |
Meteorology | |
Routine standard measurements | Quantity: activity duration in days = 8 Description: meteorological measurements (atmospheric pressure, PAR, wet and dry bulb temperature, wind speed and direction). |
Geology and geophysics | |
Single-beam echosounding | Quantity: activity duration in days = 8 Description: using two Precission Echo Sounders (PES) |
Moorings, landers, buoys | |
Physical oceanography | |
Current meters | 48° 59' 38" N 16° 27' 28" W — Porcupine Abyssal Plain mooring. A precursor to the EU funded Animate programme (www.soc.soton.ac.uk/animate). 3 RCM 8 Current meters, 3 McLane sediment traps |
Biology and fisheries | |
Sediment traps | 48° 59' 38" N 16° 27' 28" W — Porcupine Abyssal Plain mooring. A precursor to the EU funded Animate programme (www.soc.soton.ac.uk/animate). 3 RCM 8 Current meters, 3 McLane sediment traps |