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RRS James Clark Ross JR19961128 (JR16)

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS James Clark Ross (74JC)
Cruise identifierJR19961128 (JR16)
Cruise period1996-11-13 — 1996-12-07
StatusCompleted
Port of departureRothera, Antarctica
Port of returnStanley, Falkland Islands (Malvinas)
PurposeResearch
ObjectivesThe ship departed Rothera on passage to Vernadski and an overflight by Twin Otter revealed an ice free passage for the ship to travel through. The ship proceeded to POL mooring 11 near Signey where a bottom pressure recorder was laid at approx. 2600m depth. The ship then made passage north-west to POL mooring 8 where it was tracked to the sea bed. The passage to POL mooring 8 was used for the T5 XBT section containing 33 stations. In total 30 CTD stations were occupied. The CTD itself was fitted with a rosette multisampler, altimeter, 10kHz pinger, transmissometer, pressure sensor, temperature sensor and 10 litre Niskin bottles. Data processing, navigation logging and underway salinity sampling continued throughout the cruise. A hull mounted VADCP measured the bottom tracking except when the ship's speed was too great. An oceanlogger logged meteorological and sea surface data every 5 seconds during the cruise.
Chief scientistBrian A King (Southampton Oceanography Centre)
ProjectDrake Passage repeats
Cruise reportRRS James Clark Ross JR19961128 (JR16) cruise report drake_passage_summary_report.pdf (3.57 MB)  RRS James Clark Ross JR19961128 (JR16) cruise report jr16_96.pdf (1.45 MB) 
Ocean/sea areas 
GeneralSouth Atlantic Ocean
Track chartsRRS James Clark Ross JR19961128 (JR16) cruise track — jr16_96track.pdf (0.15 MB) 
Measurements 
Physical oceanography 
BathythermographQuantity: number of stations = 33
Description: A number of XBTs were deployed, at a number of stations, during the cruise
Water bottle stationsQuantity: number of stations = 30
Description: CTD with rosette mulitsampler data collected
CTD stationsQuantity: number of stations = 30
Description: CTD with rosette mulitsampler data collected
Subsurface temperature and salinity measurementsQuantity: number of stations = 30
Description: CTD with rosette mulitsampler data collected
Subsurface temperature and salinity measurementsDescription: Salinity data was collected using water bottles during the cruise. No. of samples not noted.
Current profiler (eg ADCP)Quantity: number of stations = 30
Description: CTD with rosette mulitsampler data collected
Current profiler (eg ADCP)Quantity: number of surveys = 1
Description: ADCP data was collected during the cruise
Data held at BODC Get data
Discrete samples 
29  CTD frame plus rosette samplerTemperature of the water column
Salinity of the water column
Density of the water column
30  Expendable BathythermographTemperature of the water column
30  Lowered Acoustic Doppler Current Profiler
6660  Shipborne Acoustic Doppler Current Profile