Resources

RRS James Clark Ross JR20140308 (JR293 Leg1, JR299 Leg1, UKD-5)

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS James Clark Ross (74JC)
Cruise identifierJR20140308 (JR293 Leg1, JR299 Leg1, UKD-5)
Cruise period2014-03-08 — 2014-03-29
StatusCompleted
Port of departureRothera, Antarctica
Port of returnPunta Arenas, Chile
PurposeResearch
ObjectivesThe voyage JR299 on the RRS James Clark Ross was an amalgamation of the following cruises: JR293, JR272C and JR273B. It also included a three day extension in which to turn around two Lamont-Doherty Earth Observatory (LDEO) moorings in the Weddell Sea. JR299 also represents the final voyage of the Diapycnal and Isopycnal Mixing Experiment in the Southern Ocean (DIMES) project that began in 2009. The major field work component of DIMES consisting of five voyages by US collaborators and five (and a half) UK led voyages investigating the spread of a chemical tracer dye release through Drake Passage and other observations of internal ocean mixing in the South East Pacific and Scotia Sea. Because of this JR299 is also designated DIMES UK5.

Due to logistical constraints the cruise was split into two parts. The first was a leg from the BAS Rothera base on Adelaide Island on the Antarctic Peninsula that departed on the 9th of March and proceeded north along the coastline, undertook a CTD and VMP transect of SR1b (JR293) across Drake Passage from Elephant Island to Burdwood Bank, and finished at Punta Arenas on the 24th of March. Personnel disembarked here, notably all those associated with the VMP, and the ship resupplied and refuelled.

SR1 Transect - Drake Passage Repeat Hydrography (JR293): 30 stations across Drake Passage from Elephant Island to Burdwood Bank at the same positions as occupied in previous cruises (15 of the last 18 seasons). Increased to 34 stations to achieve high resolution sampling across the SAF/PF. The VMP and tethered VMP and technicians were only available for this part of the cruise.
Chief scientistAndrew J S Meijers (British Antarctic Survey)
ProjectDiapycnal and Isopycnal Mixing Experiment in the Southern Ocean
Coordinating bodyNatural Environment Research Council (NERC)
Cruise reportRRS James Clark Ross JR20140308 (JR293 Leg1, JR299 Leg1, UKD-5) cruise report jr299.pdf (6.24 MB) 
Ocean/sea areas 
GeneralSouth West Atlantic Ocean (limit 20W)
Southern Ocean
SpecificDrake Passage, Weddell Sea, Scotia Sea, Argentine Basin
Track chartsRRS James Clark Ross JR20140308 (JR293 Leg1, JR299 Leg1, UKD-5) cruise track — jr299trk.pdf (0.18 MB) 
Measurements 
Physical oceanography 
Surface measurements underway (T,S)Quantity: track kilometres = 9650
Description: Underway ocean measurements
Surface measurements underway (T,S)Quantity: track kilometres = 9650
Description: Underway water sampling (surface salinity, every ~4 hours when underway)
Water bottle stationsQuantity: number of stations = 118
Description: CTD casts. Continuous recordings Conductivity, temperature, depth, fluorescence, PAR, transmittance. NB - 119 casts were done, one had a problem and no water sampling was done.
CTD stationsQuantity: number of stations = 118
Description: CTD casts. Continuous recordings Conductivity, temperature, depth, fluorescence, PAR, transmittance. NB - 119 casts were done, one had a problem and no water sampling was done.
Geochemical tracers (eg freons)Quantity: number of stations = 52
Description: CTD water analysis - CFCs/SF6 Sampled through water column.
Geochemical tracers (eg freons)Quantity: number of stations = 81
Description: CTD water analysis - DIMES Tracer trifluoromethyl sulfurpentafloride. Sampled through water column, targeting density horizons.
Current profiler (eg ADCP)Quantity: number of stations = 119
Description: Lowered Acoustic Doppler Current Profiler mounted on CTD frame.
Current profiler (eg ADCP)Quantity: track kilometres = 9650
Description: Ship mounted Acoustic Doppler Current Profiler measurements (75 kHz)
Surface drifters/drifting buoysQuantity: number of deployments = 16
Description: Surface drifters. 6 at high temporal resolution (GPS fix every ~15 minutes), 10 at lower (GPS fix every 2-4 hours). Deployed in 2 arrays. Array 1: -53.25902 S, -45.15368 W to -52.89154 S, -45.51824 W. Array 2: -53.42095 S, -50.21683 W to -53.20238 S, -50.01525 W
Neutrally buoyant floatsQuantity: number of deployments = 8
Description: ARGO floats. Deployed between -52.99198 S, -47.50283 W and -53.29919 S, -48.92516 W.
Other physical oceanographic measurementsQuantity: number of stations = 21
Description: VMP & TVMP Vertical microstructure profiles, free-falling and tethered.
Chemical oceanography 
OxygenQuantity: number of stations = 6
Description: CTD water analysis - Dissolved oxygen. Sampled through water column.
OxygenQuantity: number of stations = 3
Description: d18O
Carbon dioxideQuantity: number of stations = 48
Description: CTD water analysis - Dissolved inorganic carbon. Sampled through water column.
NitrateQuantity: number of stations = 50
Description: CTD water analysis - Nitrate/slicate/Total alkalinity/PH. Sampled through water column.
SilicateQuantity: number of stations = 50
Description: CTD water analysis - Nitrate/slicate/Total alkalinity/PH. Sampled through water column.
AlkalinityQuantity: number of stations = 50
Description: CTD water analysis - Nitrate/slicate/Total alkalinity/PH. Sampled through water column.
pHQuantity: number of stations = 50
Description: CTD water analysis - Nitrate/slicate/Total alkalinity/PH. Sampled through water column.
Trace elementsQuantity: number of stations = 48
Description: CTD water analysis - Barium. Sampled through water column.
IsotopesQuantity: number of stations = 3
Description: d18O
Other chemical oceanographic measurementsQuantity: number of stations = 116
Description: CTD water analysis - Salinity. Sampled through water column.
Meteorology 
Routine standard measurementsQuantity: track kilometres = 9650
Description: Underway meterological measurements
Geology and geophysics 
Single-beam echosoundingQuantity: track kilometres = 9650
Description: EA600 depth data
Multi-beam echosoundingQuantity: track kilometres = 9650
Description: EM122 swath bathymetry data
Moorings, landers, buoys 
Physical oceanography 
Current profiler (eg ADCP)62° 36' 0" S  43° 13' 59" W — Recovery position: -62.61782 S -43.24113 LDEO Mooring M2 Recovery. Mooring had been deployed on JR252 in 2011 with the triangulated position: 62 36.924' S 043 14.618' W
Current profiler (eg ADCP)63° 30' 59" S  41° 45' 59" W — Deployment position: -63.52259 S -41.76834 W LDEO Mooring M3b Deployment In addition communication was made with LDEO Mooring M3 that was deployed during JR252 in 2011. It was not possible to recover this mooring due to sea-ice cover.
Other physical oceanographic measurements62° 36' 0" S  43° 13' 59" W — Recovery position: -62.61782 S -43.24113 LDEO Mooring M2 Recovery. Mooring had been deployed on JR252 in 2011 with the triangulated position: 62 36.924' S 043 14.618' W
Other physical oceanographic measurements63° 30' 59" S  41° 45' 59" W — Deployment position: -63.52259 S -41.76834 W LDEO Mooring M3b Deployment In addition communication was made with LDEO Mooring M3 that was deployed during JR252 in 2011. It was not possible to recover this mooring due to sea-ice cover.
Data held at BODC 
Series/Profiles 
31  Acoustic doppler current profiler
Metadata parameters
Vertical spatial coordinates
Horizontal velocity of the water column (currents)
Reference numbers
Metadata parameters
Vertical spatial coordinates
Horizontal velocity of the water column (currents)
Reference numbers

BODC idDate/TimeLocationDoc.
19190202014-03-12 17:08:57 62° 45' 55" S  59° 6' 34" W  View metadata report for BODC series reference number 1919020
19190322014-03-12 19:47:25 62° 45' 54" S  59° 6' 34" W  View metadata report for BODC series reference number 1919032
19190442014-03-13 15:28:12 61° 2' 55" S  54° 35' 18" W  View metadata report for BODC series reference number 1919044
19190562014-03-13 17:06:30 60° 58' 56" S  54° 37' 44" W  View metadata report for BODC series reference number 1919056
19190682014-03-13 19:32:17 60° 50' 59" S  54° 42' 46" W  View metadata report for BODC series reference number 1919068
19190812014-03-13 22:06:01 60° 49' 59" S  54° 43' 18" W  View metadata report for BODC series reference number 1919081
19190932014-03-14 00:52:07 60° 48' 1" S  54° 44' 17" W  View metadata report for BODC series reference number 1919093
19191002014-03-14 04:50:34 60° 40' 1" S  54° 49' 28" W  View metadata report for BODC series reference number 1919100
19191122014-03-14 10:42:15 60° 19' 57" S  55° 1' 54" W  View metadata report for BODC series reference number 1919112
19191242014-03-14 16:22:07 59° 59' 51" S  55° 14' 26" W  View metadata report for BODC series reference number 1919124
19191362014-03-14 21:39:30 59° 40' 1" S  55° 26' 41" W  View metadata report for BODC series reference number 1919136
19191482014-03-15 04:23:01 59° 19' 59" S  55° 38' 52" W  View metadata report for BODC series reference number 1919148
19191612014-03-15 10:18:31 59° 0' 0" S  55° 51' 21" W  View metadata report for BODC series reference number 1919161
19191732014-03-15 15:46:23 58° 40' 59" S  56° 3' 20" W  View metadata report for BODC series reference number 1919173
19191852014-03-15 22:03:08 58° 22' 0" S  56° 15' 0" W  View metadata report for BODC series reference number 1919185
19191972014-03-16 04:33:53 58° 2' 56" S  56° 26' 54" W  View metadata report for BODC series reference number 1919197
19192042014-03-16 10:47:46 57° 44' 0" S  56° 38' 24" W  View metadata report for BODC series reference number 1919204
19192162014-03-16 16:39:14 57° 24' 51" S  56° 50' 24" W  View metadata report for BODC series reference number 1919216
19192282014-03-16 21:53:15 57° 6' 0" S  57° 2' 8" W  View metadata report for BODC series reference number 1919228
19192412014-03-17 03:35:47 56° 47' 2" S  57° 13' 48" W  View metadata report for BODC series reference number 1919241
19192532014-03-17 17:55:16 56° 27' 57" S  57° 25' 25" W  View metadata report for BODC series reference number 1919253
19192652014-03-17 21:41:08 56° 18' 29" S  57° 31' 26" W  View metadata report for BODC series reference number 1919265
19192772014-03-18 01:30:44 56° 9' 5" S  57° 37' 5" W  View metadata report for BODC series reference number 1919277
19192892014-03-18 05:41:33 55° 59' 35" S  57° 42' 53" W  View metadata report for BODC series reference number 1919289
19192902014-03-18 10:18:14 55° 49' 58" S  57° 49' 5" W  View metadata report for BODC series reference number 1919290
19193082014-03-18 15:01:34 55° 40' 29" S  57° 54' 24" W  View metadata report for BODC series reference number 1919308
19193212014-03-18 20:36 55° 31' 6" S  57° 59' 56" W  View metadata report for BODC series reference number 1919321
19193332014-03-19 01:48:47 55° 22' 5" S  57° 59' 57" W  View metadata report for BODC series reference number 1919333
19193452014-03-19 07:30:07 55° 12' 51" S  57° 59' 58" W  View metadata report for BODC series reference number 1919345
19193572014-03-19 12:18:02 55° 10' 17" S  57° 59' 49" W  View metadata report for BODC series reference number 1919357
19193692014-03-19 16:28:06 55° 7' 16" S  57° 59' 57" W  View metadata report for BODC series reference number 1919369
31  CTD/STD cast
Visible waveband radiance and irradiance measurements in the water column
Transmittance and attenuance of the water column
Density of the water column
Electrical conductivity of the water column
Chlorophyll pigment concentrations in water bodies
Vertical spatial coordinates
Salinity of the water column
Temperature of the water column
Dissolved oxygen parameters in the water column
Visible waveband radiance and irradiance measurements in the water column
Transmittance and attenuance of the water column
Density of the water column
Electrical conductivity of the water column
Chlorophyll pigment concentrations in water bodies
Vertical spatial coordinates
Salinity of the water column
Temperature of the water column
Dissolved oxygen parameters in the water column

BODC idDate/TimeLocationDoc.
18124862014-03-18 15:01:31 55° 40' 0" S  57° 53' 8" W  View metadata report for BODC series reference number 1812486
18124982014-03-18 20:35:55 55° 31' 8" S  57° 59' 59" W  View metadata report for BODC series reference number 1812498
18125052014-03-19 01:48:37 55° 22' 5" S  57° 59' 57" W  View metadata report for BODC series reference number 1812505
18125172014-03-19 07:29:55 55° 12' 51" S  57° 59' 58" W  View metadata report for BODC series reference number 1812517
18125292014-03-19 12:17:51 55° 10' 17" S  57° 59' 51" W  View metadata report for BODC series reference number 1812529
18125302014-03-19 16:27:51 55° 7' 14" S  57° 59' 58" W  View metadata report for BODC series reference number 1812530
18122162014-03-12 17:08:32 62° 45' 55" S  59° 6' 34" W  View metadata report for BODC series reference number 1812216
18122282014-03-12 19:47:14 62° 45' 54" S  59° 6' 34" W  View metadata report for BODC series reference number 1812228
18122412014-03-13 15:27:55 61° 2' 55" S  54° 35' 16" W  View metadata report for BODC series reference number 1812241
18122532014-03-13 17:06:11 60° 58' 56" S  54° 37' 44" W  View metadata report for BODC series reference number 1812253
18122652014-03-13 19:32:05 60° 50' 59" S  54° 42' 46" W  View metadata report for BODC series reference number 1812265
18122772014-03-13 22:05:45 60° 49' 59" S  54° 43' 18" W  View metadata report for BODC series reference number 1812277
18122892014-03-14 00:52:09 60° 48' 1" S  54° 44' 18" W  View metadata report for BODC series reference number 1812289
18122902014-03-14 04:50:29 60° 39' 49" S  54° 49' 6" W  View metadata report for BODC series reference number 1812290
18123082014-03-14 10:42:10 60° 19' 46" S  55° 1' 53" W  View metadata report for BODC series reference number 1812308
18123212014-03-14 16:21:53 59° 59' 50" S  55° 14' 28" W  View metadata report for BODC series reference number 1812321
18123332014-03-14 21:39:18 59° 40' 1" S  55° 26' 38" W  View metadata report for BODC series reference number 1812333
18123452014-03-15 04:22:43 59° 19' 56" S  55° 38' 42" W  View metadata report for BODC series reference number 1812345
18123572014-03-15 10:18:27 59° 0' 0" S  55° 51' 20" W  View metadata report for BODC series reference number 1812357
18123692014-03-15 15:46:02 58° 41' 2" S  56° 3' 23" W  View metadata report for BODC series reference number 1812369
18123702014-03-15 22:03:01 58° 22' 0" S  56° 15' 0" W  View metadata report for BODC series reference number 1812370
18123822014-03-16 04:33:46 58° 3' 0" S  56° 26' 47" W  View metadata report for BODC series reference number 1812382
18123942014-03-16 10:47:26 57° 43' 57" S  56° 38' 4" W  View metadata report for BODC series reference number 1812394
18124012014-03-16 16:39:12 57° 24' 47" S  56° 50' 20" W  View metadata report for BODC series reference number 1812401
18124132014-03-16 21:53:19 57° 6' 1" S  57° 2' 8" W  View metadata report for BODC series reference number 1812413
18124252014-03-17 03:35:38 56° 46' 58" S  57° 13' 54" W  View metadata report for BODC series reference number 1812425
18124372014-03-17 17:55:13 56° 28' 2" S  57° 25' 28" W  View metadata report for BODC series reference number 1812437
18124492014-03-17 21:40:52 56° 18' 15" S  57° 30' 1" W  View metadata report for BODC series reference number 1812449
18124502014-03-18 01:30:38 56° 8' 43" S  57° 34' 3" W  View metadata report for BODC series reference number 1812450
18124622014-03-18 05:41:35 55° 58' 59" S  57° 39' 38" W  View metadata report for BODC series reference number 1812462
18124742014-03-18 10:18:23 55° 49' 3" S  57° 46' 56" W  View metadata report for BODC series reference number 1812474
21  Turbulence energy dissipation probe
Turbulence in the water column
Vertical spatial coordinates
Salinity of the water column
Temperature of the water column
Reference numbers
Turbulence in the water column
Vertical spatial coordinates
Salinity of the water column
Temperature of the water column
Reference numbers

BODC idDate/TimeLocationDoc.
17343392014-03-18 23:27  — 2014-03-19 00:25 55° 31' 8" S  57° 59' 59" W  View metadata report for BODC series reference number 1734339
17343402014-03-19 05:03  — 2014-03-19 06:04 55° 22' 5" S  57° 59' 57" W  View metadata report for BODC series reference number 1734340
17343522014-03-19 10:36  — 2014-03-19 11:38 55° 12' 51" S  57° 59' 58" W  View metadata report for BODC series reference number 1734352
17343642014-03-19 14:43  — 2014-03-19 15:43 55° 10' 23" S  57° 59' 41" W  View metadata report for BODC series reference number 1734364
17343762014-03-13 17:10  — 2014-03-13 18:11 60° 58' 56" S  54° 37' 44" W  View metadata report for BODC series reference number 1734376
17343882014-03-13 19:50  — 2014-03-13 20:55 60° 50' 59" S  54° 42' 46" W  View metadata report for BODC series reference number 1734388
17344072014-03-13 23:23  — 2014-03-14 00:07 60° 49' 59" S  54° 43' 18" W  View metadata report for BODC series reference number 1734407
17344192014-03-14 04:37  — 2014-03-14 07:53 60° 40' 1" S  54° 49' 28" W  View metadata report for BODC series reference number 1734419
17344202014-03-14 10:23  — 2014-03-14 13:47 60° 19' 57" S  55° 1' 54" W  View metadata report for BODC series reference number 1734420
17342112014-03-12 18:51  — 2014-03-12 19:05 62° 45' 55" S  59° 6' 34" W  View metadata report for BODC series reference number 1734211
17342232014-03-14 21:29  — 2014-03-15 01:25 59° 40' 1" S  55° 26' 43" W  View metadata report for BODC series reference number 1734223
17342352014-03-15 04:04  — 2014-03-15 07:50 59° 19' 59" S  55° 38' 52" W  View metadata report for BODC series reference number 1734235
17342472014-03-15 15:31  — 2014-03-15 19:20 58° 40' 59" S  56° 3' 20" W  View metadata report for BODC series reference number 1734247
17342592014-03-15 21:53  — 2014-03-16 02:05 58° 22' 0" S  56° 15' 0" W  View metadata report for BODC series reference number 1734259
17342602014-03-16 10:28  — 2014-03-16 14:02 57° 44' 1" S  56° 38' 26" W  View metadata report for BODC series reference number 1734260
17342722014-03-16 16:28  — 2014-03-16 19:33 57° 24' 51" S  56° 50' 24" W  View metadata report for BODC series reference number 1734272
17342842014-03-12 20:45  — 2014-03-12 22:13 62° 45' 54" S  59° 6' 34" W  View metadata report for BODC series reference number 1734284
17342962014-03-17 03:17  — 2014-03-17 06:42 56° 47' 2" S  57° 13' 47" W  View metadata report for BODC series reference number 1734296
17343032014-03-17 07:36  — 2014-03-17 09:03 56° 42' 15" S  57° 16' 44" W  View metadata report for BODC series reference number 1734303
17343152014-03-17 09:58  — 2014-03-17 16:29 56° 37' 30" S  57° 19' 39" W  View metadata report for BODC series reference number 1734315
17343272014-03-18 18:21  — 2014-03-18 19:04 55° 39' 58" S  57° 51' 17" W  View metadata report for BODC series reference number 1734327
Discrete samples 
32  CTD frame plus rosette samplerMetadata parameters
Water body released tracers
Alkalinity, acidity and pH of the water column
Silicate concentration parameters in the water column
Salinity of the water column
Total dissolved inorganic carbon (TCO2) concentration in the water column
Nitrate concentration parameters in the water column
Phosphate concentration parameters in the water column