Service interruption possible — 16th January 2016 between 14:00 and 14:05 GMT

Cruise inventory

RRS Discovery D251T

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS Discovery (74E3)
Cruise identifierD251T
Cruise period2001-03-31 — 2001-04-09
StatusCompleted
Port of departureNewport, United Kingdom
Port of returnSouthampton, United Kingdom
PurposeTrials
ObjectivesFollowing 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 scientistEdward B Cooper (United Kingdom Ocean Research Services)
Cruise reportRRS Discovery D251T cruise report d251t.pdf — access key 'C' (0.36 MB) 
Ocean/sea areas 
GeneralNorth East Atlantic Ocean (limit 40W)
SpecificWestern Approaches and Porcupine Abyssal Plain
Track chartsRRS Discovery D251T cruise track — d251ttrk.pdf (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 stationsQuantity: 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 
OxygenQuantity: number of profiles = 9
Description: with oxygen, aquatracker fluorometer and transmissometer. Various depths from 100 - 4522 m
NitrateQuantity: number of samples = 34
Description: from the non-toxic supply for subsequent laboratory analysis
NitrateQuantity: number of measurements = 850
Description: of nitrate from 5 days of data recorded by a WS Autonomous Nutrient Analyser
Meteorology 
Routine standard measurementsQuantity: 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 echosoundingQuantity: activity duration in days = 8
Description: using two Precission Echo Sounders (PES)
Moorings, landers, buoys 
Physical oceanography 
Current meters48° 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 traps48° 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