Cruise inventory

RRS James Cook JC054

Cruise summary report

Cruise inventory

Cruise Info. 
Ship name (ship code)RRS James Cook (740H)
Cruise identifierJC054
Cruise period2010-11-30 — 2011-01-08
StatusCompleted
Port of departurePunta Arenas, Chile
Port of returnPunta Arenas, Chile
PurposeResearch
ObjectivesThis cruise was the second UK cruise undertaken as part of the joint UK-US DIMES (Diapycnal and Isopycnal Mixing Experiment in the Southern Ocean) programme. DIMES is motivated by a need to quantify and understand the rates of mixing in the Southern Ocean, so as to better determine the impacts on large-scale ocean circulation and climate. The fieldwork element of the DIMES programme involves a tracer release in the SE Pacific sector of the Southern Ocean, with a number of subsequent cruises tracking the spreading and mixing of the tracer as it flows over the relatively smooth topography up to Drake Passage, and then the rougher topography through Drake Passage and into and through the Scotia Sea. There are also large-scale deployments of RAFOS floats, surface drifters, and some EM-APEX float deployments, as well as hydrographic and mooring elements, and vertical profiling of turbulence with VMPs.

The UK2 DIMES cruise had the objectives of:-
1)retrieving and redeploying the DIMES mooring cluster in the eastern Drake Passage/Scotia Sea
2)conducting a short deployment of a mooring supplied by the Scottish Association for Marine Science (SAMS)
3)conducting a grid of CTD/VMP/tracer measurements at the site of the moorings cluster
4)conducting sections of CTD/VMP/tracer stations in Drake Passage, and along lines at 79W and 88W in the SE Pacific
5)deploying RAFOS floats, surface drifters and EM-APEX floats to enhance the DIMES float & drifter programmes, and to retrieve high temporal resolution vertical profiles of hydrographic properties and velocity.
Chief scientistMike Meredith (British Antarctic Survey)
ProjectDiapycnal and Isopycnal Mixing Experiment in the Southern Ocean (DIMES)
Coordinating bodyNatural Environment Research Council (UK); National Science Foundation (US)
Cruise reportRRS James Cook JC054 cruise report jc054.pdf — access key 'C' (25.23 MB) 
Ocean/sea areas 
GeneralSouth West Atlantic Ocean (limit 20W)
South East Pacific Ocean (limit 140W)
Southern Ocean
SpecificScotia Sea, Drake Passage, Southeast Pacific
Track chartsRRS James Cook JC054 cruise track — jc054trk.pdf (0.11 MB) 
Measurements 
Physical oceanography 
Surface measurements underway (T,S)Quantity: activity duration in days = 42
Description: Underway thermosalinograph, shipboard ADCP, single-beam echosounder, multibeam echosounder and meteorological measurements were made along the shiptrack.
CTD stationsQuantity: number of stations = 57
Description: CTD stations conducted with SBE911+ profiler mounted on a 24-bottle rosette frame. Salt samples taken for calibration for each station from a subset of the 24 bottles available.
CTD stationsQuantity: number of stations = 36
Description: Vertical turbulence and hydrographic measurements conducted with WHOI and NOC Vertical Microstructure Profilers
Geochemical tracers (eg freons)Quantity: number of stations = 57
Description: Water samples were drawn from each station and analysed by gas chromatography for concentration of the purposefully-released DIMES tracer, trifluoromethyl sulphur pentafluoride
Current profiler (eg ADCP)Quantity: number of stations = 57
Description: Lowered ADCP measurements were recovered at each of the CTD sites
Other physical oceanographic measurementsQuantity: number of stations = 36
Description: Vertical turbulence and hydrographic measurements conducted with WHOI and NOC Vertical Microstructure Profilers
Meteorology 
Routine standard measurementsQuantity: activity duration in days = 42
Description: Underway thermosalinograph, shipboard ADCP, single-beam echosounder, multibeam echosounder and meteorological measurements were made along the shiptrack.
Other meteorological measurementsQuantity: activity duration in days = 42
Description: Underway thermosalinograph, shipboard ADCP, single-beam echosounder, multibeam echosounder and meteorological measurements were made along the shiptrack.
Geology and geophysics 
Single-beam echosoundingQuantity: activity duration in days = 42
Description: Underway thermosalinograph, shipboard ADCP, single-beam echosounder, multibeam echosounder and meteorological measurements were made along the shiptrack.
Multi-beam echosoundingQuantity: activity duration in days = 42
Description: Underway thermosalinograph, shipboard ADCP, single-beam echosounder, multibeam echosounder and meteorological measurements were made along the shiptrack.
Moorings, landers, buoys 
Physical oceanography 
Current meters56° 3' 46" S  57° 53' 59" W — Site SW, recovered 0826 7 December 2010 Redeployed 19 December 2010 Seaguard CM (4), SBE37 SMP (5), Nortek CM (1)
Current meters56° 1' 23" S  57° 47' 11" W — Site M, recovered 1733 7 December 2010 Redeployed 19 December 2010 RAFOS sound source (1), Sontek CM (2), SBE37 IMP (2), McClane Moored Profiler (2)
Current meters56° 0' 46" S  57° 49' 12" W — Site C, recovered 1425 7 December 2010 Redeployed 18 December 2010 SBE37 SMP (12), Nortek CM (12), Long Ranger ADCP (1)
Current meters57° 34' 14" S  68° 11' 0" W — 2x EM-APEX floats (4976 & 4977); 31/12/10 12:18
Current meters56° 1' 0" S  57° 48' 34" W — SAMS mooring, Deployed 1505, 8 December 2010 Recovered 1608, 18 December 2010 Thermistor chain, Workhorse Sentinel ADCP
Current meters55° 58' 2" S  57° 44' 35" W — Site NE, recovered 0712 6 December 2010 Redeployed 2010 December 2010 SBE37 SMP (4), SBE37 IMP (1), Seaguard CM (3), Nortek CM (1), RCM-11 (1)
Current meters55° 57' 43" S  57° 41' 23" W — Site NW, recovered 2030 7 December 2010 Redeployed 19 December 2010 Seaguard CM (4), SBE37 SMP (5), Sontek CM (1)
Current meters56° 0' 21" S  57° 44' 47" W — Site SE, recovered 1310 6 December 2010 Redeployed 20 December 2010 Seaguard CM (4), SBE37 SMP (4), SBE37 IMP (1), Sontek CM (1)
Surface drifters/drifting buoys59° 4' 18" S  79° 59' 59" W — 04/01/11 21:34
Surface drifters/drifting buoys56° 6' 6" S  57° 25' 21" W — 22/12/10 21:00
Surface drifters/drifting buoys55° 50' 56" S  58° 10' 17" W — 10/12/10 15:51
Surface drifters/drifting buoys55° 48' 55" S  58° 16' 40" W — 10/12/10 16:15
Surface drifters/drifting buoys57° 34' 23" S  68° 11' 6" W — 2x APEX floats; 31/12/10 12:17
Surface drifters/drifting buoys57° 34' 14" S  68° 11' 0" W — 2x EM-APEX floats (4976 & 4977); 31/12/10 12:18
Surface drifters/drifting buoys56° 31' 17" S  79° 12' 0" W — 06/01/11 07:26
Surface drifters/drifting buoys57° 8' 18" S  79° 0' 11" W — 05/01/11 21:18
Surface drifters/drifting buoys58° 26' 0" S  78° 58' 17" W — 05/01/11 07:58
Surface drifters/drifting buoys59° 47' 50" S  78° 59' 58" W — 04/01/11 14:36
Surface drifters/drifting buoys60° 31' 56" S  78° 56' 57" W — 04/01/11 07:56
Surface drifters/drifting buoys60° 59' 54" S  79° 4' 4" W — 03/01/11 23:04
Surface drifters/drifting buoys62° 19' 46" S  78° 59' 59" W — 03/01/11 10:18
Surface drifters/drifting buoys63° 0' 38" S  78° 59' 58" W — 03/01/11 00:54
Surface drifters/drifting buoys56° 7' 4" S  57° 15' 44" W — 22/12/10 21:46
Surface drifters/drifting buoys56° 5' 18" S  57° 34' 53" W — 22/12/10 20:08
Surface drifters/drifting buoys56° 4' 12" S  57° 44' 24" W — 22/12/10 19:16
Surface drifters/drifting buoys56° 3' 27" S  57° 53' 37" W — 22/12/10 17:40
Surface drifters/drifting buoys56° 2' 37" S  58° 3' 29" W — 22/12/10 16:23
Surface drifters/drifting buoys55° 47' 30" S  58° 20' 59" W — 10/12/10 16:31
Surface drifters/drifting buoys55° 49' 46" S  58° 14' 3" W — 10/12/10 16:05
Neutrally buoyant floats59° 4' 18" S  79° 0' 0" W — 3x RAFOS floats; 04/01/11 21:20
Neutrally buoyant floats60° 31' 51" S  78° 59' 51" W — 3x RAFOS floats; 04/01/11 02:30
Neutrally buoyant floats57° 47' 9" S  79° 0' 3" W — 3x RAFOS floats; 05/01/11 16:28
Neutrally buoyant floats58° 25' 41" S  79° 0' 0" W — 3x RAFOS floats; 05/01/11 18:32
Neutrally buoyant floats56° 53' 25" S  79° 18' 5" W — 3x RAFOS floats; 06/01/11 03:35
Neutrally buoyant floats56° 31' 17" S  79° 12' 0" W — RAFOS float; 06/01/11 07:31
Neutrally buoyant floats56° 5' 14" S  57° 34' 50" W — RAFOS float; 22/12/10 20:05
Neutrally buoyant floats56° 6' 5" S  57° 15' 46" W — RAFOS float; 22/12/10 20:59
Neutrally buoyant floats60° 59' 54" S  79° 4' 4" W — 3x RAFOS floats; 03/01/11 22:53
Other physical oceanographic measurements56° 0' 21" S  57° 44' 47" W — Site SE, recovered 1310 6 December 2010 Redeployed 20 December 2010 Seaguard CM (4), SBE37 SMP (4), SBE37 IMP (1), Sontek CM (1)
Other physical oceanographic measurements56° 0' 46" S  57° 49' 12" W — Site C, recovered 1425 7 December 2010 Redeployed 18 December 2010 SBE37 SMP (12), Nortek CM (12), Long Ranger ADCP (1)
Other physical oceanographic measurements55° 58' 2" S  57° 44' 35" W — Site NE, recovered 0712 6 December 2010 Redeployed 2010 December 2010 SBE37 SMP (4), SBE37 IMP (1), Seaguard CM (3), Nortek CM (1), RCM-11 (1)
Other physical oceanographic measurements57° 34' 23" S  68° 11' 6" W — 2x APEX floats; 31/12/10 12:17
Other physical oceanographic measurements56° 1' 23" S  57° 47' 11" W — Site M, recovered 1733 7 December 2010 Redeployed 19 December 2010 RAFOS sound source (1), Sontek CM (2), SBE37 IMP (2), McClane Moored Profiler (2)
Other physical oceanographic measurements55° 57' 43" S  57° 41' 23" W — Site NW, recovered 2030 7 December 2010 Redeployed 19 December 2010 Seaguard CM (4), SBE37 SMP (5), Sontek CM (1)
Other physical oceanographic measurements56° 3' 46" S  57° 53' 59" W — Site SW, recovered 0826 7 December 2010 Redeployed 19 December 2010 Seaguard CM (4), SBE37 SMP (5), Nortek CM (1)
Other physical oceanographic measurements56° 1' 0" S  57° 48' 34" W — SAMS mooring, Deployed 1505, 8 December 2010 Recovered 1608, 18 December 2010 Thermistor chain, Workhorse Sentinel ADCP
Other physical oceanographic measurements57° 34' 14" S  68° 11' 0" W — 2x EM-APEX floats (4976 & 4977); 31/12/10 12:18
Data held at BODC 
Series/Profiles 
55  CTD/STD cast
Density of the water column
Temperature of the water column
Salinity of the water column
Reference numbers
Vertical spatial coordinates
[Show series]
Density of the water column
Temperature of the water column
Salinity of the water column
Reference numbers
Vertical spatial coordinates
[Hide series]

BODC idDate/TimeLocationDoc.
10882252010-12-07 03:47  — 2010-12-07 05:13 55° 57' 25" S  57° 55' 22" W  View metadata report for BODC series reference number 1088225
10882372010-12-10 06:47  — 2010-12-10 08:24 55° 58' 23" S  57° 52' 17" W  View metadata report for BODC series reference number 1088237
10882492010-12-18 23:35  — 2010-12-19 01:14 56° 3' 50" S  57° 45' 9" W  View metadata report for BODC series reference number 1088249
10882502010-12-19 06:04  — 2010-12-19 07:26 56° 1' 34" S  57° 44' 28" W  View metadata report for BODC series reference number 1088250
10882622010-12-20 01:15  — 2010-12-20 02:40 55° 59' 54" S  57° 44' 43" W  View metadata report for BODC series reference number 1088262
10882742010-12-20 06:39  — 2010-12-20 08:05 55° 58' 4" S  57° 44' 38" W  View metadata report for BODC series reference number 1088274
10882862010-12-20 21:42  — 2010-12-20 23:06 55° 57' 49" S  57° 47' 17" W  View metadata report for BODC series reference number 1088286
10882982010-12-21 03:03  — 2010-12-21 04:23 55° 59' 44" S  57° 47' 14" W  View metadata report for BODC series reference number 1088298
10883052010-12-21 08:20  — 2010-12-21 09:43 56° 3' 31" S  57° 46' 54" W  View metadata report for BODC series reference number 1088305
10883172010-12-21 13:48  — 2010-12-21 15:17 56° 3' 36" S  57° 49' 27" W  View metadata report for BODC series reference number 1088317
10883292010-12-21 19:02  — 2010-12-21 20:34 56° 1' 41" S  57° 49' 29" W  View metadata report for BODC series reference number 1088329
10883302010-12-08 02:25  — 2010-12-08 03:25 55° 58' 10" S  57° 54' 48" W  View metadata report for BODC series reference number 1088330
10883422010-12-22 01:09  — 2010-12-22 02:37 55° 59' 47" S  57° 49' 38" W  View metadata report for BODC series reference number 1088342
10883542010-12-22 07:34  — 2010-12-22 09:18 55° 57' 48" S  57° 49' 45" W  View metadata report for BODC series reference number 1088354
10883662010-12-23 01:58  — 2010-12-23 02:54 56° 39' 17" S  58° 3' 3" W  View metadata report for BODC series reference number 1088366
10883782010-12-23 09:15  — 2010-12-23 10:02 57° 15' 12" S  58° 21' 52" W  View metadata report for BODC series reference number 1088378
10883912010-12-23 15:39  — 2010-12-23 16:31 57° 50' 56" S  58° 40' 54" W  View metadata report for BODC series reference number 1088391
10884092010-12-23 22:54  — 2010-12-23 23:29 58° 26' 49" S  58° 58' 12" W  View metadata report for BODC series reference number 1088409
10884102010-12-24 05:27  — 2010-12-24 05:57 59° 12' 15" S  59° 21' 21" W  View metadata report for BODC series reference number 1088410
10884222010-12-25 06:57  — 2010-12-25 07:55 62° 51' 24" S  63° 31' 21" W  View metadata report for BODC series reference number 1088422
10884342010-12-25 12:04  — 2010-12-25 13:27 62° 36' 10" S  64° 5' 7" W  View metadata report for BODC series reference number 1088434
10884462010-12-25 19:38  — 2010-12-25 20:57 62° 21' 3" S  64° 38' 52" W  View metadata report for BODC series reference number 1088446
10884582010-12-08 09:15  — 2010-12-08 10:44 56° 0' 23" S  57° 54' 14" W  View metadata report for BODC series reference number 1088458
10884712010-12-26 02:42  — 2010-12-26 03:54 62° 5' 44" S  65° 12' 35" W  View metadata report for BODC series reference number 1088471
10884832010-12-26 08:58  — 2010-12-26 10:22 61° 50' 41" S  65° 45' 50" W  View metadata report for BODC series reference number 1088483
10884952010-12-26 17:01  — 2010-12-26 18:33 61° 27' 53" S  66° 35' 59" W  View metadata report for BODC series reference number 1088495
10885022010-12-27 01:49  — 2010-12-27 03:16 61° 4' 57" S  67° 26' 14" W  View metadata report for BODC series reference number 1088502
10885142010-12-27 09:23  — 2010-12-27 10:53 60° 39' 17" S  68° 0' 20" W  View metadata report for BODC series reference number 1088514
10885262010-12-27 21:51  — 2010-12-27 22:48 60° 6' 42" S  68° 3' 27" W  View metadata report for BODC series reference number 1088526
10885382010-12-28 03:37  — 2010-12-28 05:05 59° 44' 28" S  68° 3' 44" W  View metadata report for BODC series reference number 1088538
10885512010-12-28 10:19  — 2010-12-28 11:35 59° 22' 56" S  68° 4' 34" W  View metadata report for BODC series reference number 1088551
10885632010-12-28 17:21  — 2010-12-28 18:50 59° 0' 55" S  68° 3' 56" W  View metadata report for BODC series reference number 1088563
10885752010-12-29 03:20  — 2010-12-29 04:56 58° 39' 17" S  68° 6' 28" W  View metadata report for BODC series reference number 1088575
10885872010-12-08 17:45  — 2010-12-08 19:30 56° 2' 26" S  57° 54' 23" W  View metadata report for BODC series reference number 1088587
10885992010-12-29 11:08  — 2010-12-29 15:54 58° 17' 54" S  68° 8' 10" W  View metadata report for BODC series reference number 1088599
10886062010-12-29 21:53  — 2010-12-29 23:45 57° 56' 13" S  68° 9' 58" W  View metadata report for BODC series reference number 1088606
10886182010-12-30 07:20  — 2010-12-30 08:58 57° 34' 55" S  68° 10' 59" W  View metadata report for BODC series reference number 1088618
10886312010-12-30 16:07  — 2010-12-30 17:43 57° 13' 29" S  68° 10' 45" W  View metadata report for BODC series reference number 1088631
10886432010-12-30 23:58  — 2010-12-31 00:41 56° 52' 39" S  68° 12' 43" W  View metadata report for BODC series reference number 1088643
10886552011-01-02 03:58  — 2011-01-02 04:54 64° 20' 43" S  78° 59' 36" W  View metadata report for BODC series reference number 1088655
10886672011-01-02 13:40  — 2011-01-02 14:51 63° 40' 41" S  78° 59' 58" W  View metadata report for BODC series reference number 1088667
10886792011-01-02 22:08  — 2011-01-02 23:11 63° 0' 38" S  78° 59' 59" W  View metadata report for BODC series reference number 1088679
10886802011-01-03 04:55  — 2011-01-03 06:39 62° 20' 21" S  78° 59' 55" W  View metadata report for BODC series reference number 1088680
10886922011-01-03 13:50  — 2011-01-03 14:46 61° 39' 22" S  79° 0' 0" W  View metadata report for BODC series reference number 1088692
10887112010-12-09 01:49  — 2010-12-09 03:23 56° 4' 25" S  57° 54' 22" W  View metadata report for BODC series reference number 1088711
10887232011-01-03 20:10  — 2011-01-03 21:04 60° 59' 55" S  79° 1' 17" W  View metadata report for BODC series reference number 1088723
10887352011-01-04 02:14  — 2011-01-04 03:55 60° 31' 32" S  78° 58' 45" W  View metadata report for BODC series reference number 1088735
10887472011-01-04 11:56  — 2011-01-04 12:51 59° 47' 59" S  78° 59' 59" W  View metadata report for BODC series reference number 1088747
10887592011-01-04 18:47  — 2011-01-04 19:45 59° 4' 18" S  79° 0' 1" W  View metadata report for BODC series reference number 1088759
10887602011-01-05 01:53  — 2011-01-05 03:04 58° 25' 45" S  79° 0' 3" W  View metadata report for BODC series reference number 1088760
10887722011-01-05 13:04  — 2011-01-05 14:21 57° 47' 9" S  78° 59' 59" W  View metadata report for BODC series reference number 1088772
10887842010-12-09 08:21  — 2010-12-09 09:38 56° 4' 2" S  57° 51' 33" W  View metadata report for BODC series reference number 1088784
10887962010-12-09 14:33  — 2010-12-09 16:32 56° 2' 3" S  57° 51' 57" W  View metadata report for BODC series reference number 1088796
10888032010-12-09 17:20  — 2010-12-09 19:01 56° 2' 16" S  57° 51' 53" W  View metadata report for BODC series reference number 1088803
10888152010-12-09 23:24  — 2010-12-10 00:59 55° 59' 43" S  57° 53' 4" W  View metadata report for BODC series reference number 1088815
Discrete samples 
120  Sample taken from ship's non-toxic supplySalinity of the water column