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BODC Cruise Metadata Report for RRS James Clark Ross (74JC) cruise JR20110409 (JR276, UKD-2.5)

Introduction

This report collates information from the BODC cruise inventory and oceanographic databases. It presents

Cruise Inventory Information

Long name RRS James Clark Ross (74JC) cruise JR20110409 (JR276, UKD-2.5)
Short name JR20110409 (JR276, UKD-2.5)
Objectives and Narrative JR276 was part of DIMES, "Diapycnal and Isopycnal Mixing Experiment in the Southern Ocean", a joint UK and US project funded by the National Science Foundation in the US and NERC in the UK. The objective of DIMES was "to test and, if necessary, redefine the present paradigm of Southern Ocean mixing by obtaining the first systematic measurements of mixing processes in two contrasting regimes (the SE Pacific and the SW Atlantic) of the Antarctic Circumpolar Current (ACC)".

The methods of relevance to this cruise were:
(1) the release of an inert chemical tracer, CF3SF5 (tri-fluoromethyl sulphur pentafluoride) in the SE Pacific sector west of Drake Passage and following its dispersion horizontally and laterally as it transits the SE Pacific, Drake passage and the Scotia Sea
(2) The use of fine structure and microstructure measurements from Lowered ADCP, CTD and free-falling microstructure probes
(3) the release of surface drifters and neutral density floats.

This cruise took place about two years after the experiment was initiated by release of tracer and floats in the SE Pacific. Its specific objective was to observe the distribution of tracer and make measurements of turbulence on sections either side of Drake Passage, to quantify the mixing taking place in that region.

The western section was along 78W in the SE Pacific sector of the Southern Ocean, from 56.5S to 64S. It comprised 38 CTD and water bottle rosette stations, at various spacings but with those between 60 and 62 being very closely spaced, about 1/8 degree. The eastern section was along part of the CLIVAR repeat hydrography SR1 line, from 59S 55.85W, to 55.14S 58W, with 14 CTD /rosette stations, about every 20 nautical miles. Vertical microstructure profiles were also measured on a total 14 of the stations, using a free-falling instrument manufactured by Rockland Scientific. Thirteen surface drifters and six subsurface RAFOS floats were released in clusters at two locations on the cruise track between the two sections, to study the evolution of Lagrangian coherent structures in the velocity field and their role in mixing Underway data (surface TSG, met, ADCP and swath bathymetry) were collected continuously once the vessel had left Chilean waters, just before the first station on the S3 line.
Ship RRS James Clark Ross
Departure Port Punta Arenas, Chile
Departure Date 2011-04-09
Arrival Port Stanley, Falkland Islands (Malvinas)
Arrival Date 2011-04-26
Principal Scientist(s) Andrew J Watson (University of East Anglia School of Environmental Sciences)
Responsible Organisation British Antarctic Survey
Associated Project(s) Diapycnal and Isopycnal Mixing Experiment in the Southern Ocean (DIMES)
IHB Sea Areas Visited South West Atlantic Ocean (limit 20W)
Marsden Squares Visited 485/486/487/521/522/523
Work Area Description Drake Passage
Work Area Bounding Polygon 70S,80W; 50S,80W; 50S,50W; 70S,50W; 70S,80W
Southern Limit 70S
Northern Limit 50S
Western Limit 80W
Eastern Limit 50W

Cruise Inventory Datasets

Physical oceanography  
CTD stations Quantity: number of profiles = 55
Description: CTD data from stations  
Current profiler (eg ADCP) Quantity: number of profiles = 55
Description: Lowered ADCP  
Current profiler (eg ADCP) Quantity: track kilometres = 1930
Description: Vessel-mounted ADCP  
Geochemical tracers (eg freons) Quantity: number of profiles = 52
Description: Measurements of released tracer, SF6 and CFCs 12 and 13 using samples drawn from water bottles on 24 bottle rosette.  
Neutrally buoyant floats Quantity: number of deployments = 6
Description: Neutrally buoyant RAFOS floats  
Other physical oceanographic measurements Quantity: number of profiles = 14
Description: Vertical temperature and velocity microstructure using Rockland Scientific VMP  
Surface drifters/drifting buoys Quantity: number of deployments = 13
Description: Surface drifters  
Surface measurements underway (T,S) Quantity: track kilometres = 1930
Description: Thermosalinograph  
Chemical oceanography  
Alkalinity Quantity: number of samples = 25
Description: Alkalinity/TCO2 samples for later analysis  
Carbon dioxide Quantity: track kilometres = 1930
Description: Continuous underway surface pCO2  
Meteorology  
Routine standard measurements Quantity: track kilometres = 1930
Description: Meteorological package (barometer, wind speed, wind direction, humidity, TIR, PAR)  

Cruise Inventory Mooring/Buoy Operations

No information on datasets is currently available

Summary of BODC Data Holdings for the Cruise

National Oceanographic Database

Summary

# Series Instrument Description Parameters
1 Acoustic doppler current profiler Date and time
Horizontal platform movement
Horizontal spatial co-ordinates
Horizontal velocity of the water column (currents)
Reference numbers
Vertical spatial coordinates
52 Acoustic doppler current profiler Horizontal velocity of the water column (currents)
Metadata parameters
Reference numbers
Vertical spatial coordinates
53 CTD/STD cast Density of the water column
Reference numbers
Salinity of the water column
Temperature of the water column
Vertical spatial coordinates
13 Turbulence energy dissipation probe Reference numbers
Salinity of the water column
Temperature of the water column
Turbulence in the water column
Vertical spatial coordinates

Note: Parameter terms are taken from the BODC Parameter Discovery Vocabulary XML (SKOS)

Full List

BODC Reference Instrument Description Date/Time Location  
1088827 CTD/STD cast 2011-04-11 15:44Z to 2011-04-11 17:05Z 56° 30' S, 78° 0' W Click for more
1088839 CTD/STD cast 2011-04-13 17:22Z to 2011-04-13 18:12Z 59° 24' S, 78° 0' W Click for more
1088840 CTD/STD cast 2011-04-13 21:09Z to 2011-04-13 21:55Z 59° 36' S, 78° 0' W Click for more
1088852 CTD/STD cast 2011-04-14 04:20Z to 2011-04-14 05:14Z 59° 48' S, 78° 0' W Click for more
1088864 CTD/STD cast 2011-04-14 08:16Z to 2011-04-14 09:09Z 60° 0' S, 78° 0' W Click for more
1088876 CTD/STD cast 2011-04-14 11:31Z to 2011-04-14 12:21Z 60° 7' S, 78° 0' W Click for more
1088888 CTD/STD cast 2011-04-14 15:15Z to 2011-04-14 16:44Z 60° 14' S, 78° 0' W Click for more
1088907 CTD/STD cast 2011-04-15 01:44Z to 2011-04-15 02:23Z 60° 21' S, 78° 0' W Click for more
1088919 CTD/STD cast 2011-04-15 04:36Z to 2011-04-15 05:22Z 60° 28' S, 78° 0' W Click for more
1088920 CTD/STD cast 2011-04-15 07:31Z to 2011-04-15 08:14Z 60° 35' S, 78° 0' W Click for more
1088932 CTD/STD cast 2011-04-15 10:27Z to 2011-04-15 11:10Z 60° 42' S, 78° 0' W Click for more
1088944 CTD/STD cast 2011-04-15 13:15Z to 2011-04-15 13:56Z 60° 49' S, 78° 0' W Click for more
1088956 CTD/STD cast 2011-04-15 16:01Z to 2011-04-15 16:44Z 60° 56' S, 78° 0' W Click for more
1088968 CTD/STD cast 2011-04-15 18:48Z to 2011-04-15 19:30Z 61° 3' S, 78° 0' W Click for more
1088981 CTD/STD cast 2011-04-15 21:36Z to 2011-04-15 22:15Z 61° 10' S, 78° 0' W Click for more
1088993 CTD/STD cast 2011-04-16 00:21Z to 2011-04-16 01:03Z 61° 17' S, 78° 0' W Click for more
1089007 CTD/STD cast 2011-04-16 03:40Z to 2011-04-16 05:17Z 61° 24' S, 78° 0' W Click for more
1089019 CTD/STD cast 2011-04-16 10:28Z to 2011-04-16 11:12Z 61° 31' S, 78° 0' W Click for more
1089020 CTD/STD cast 2011-04-16 13:20Z to 2011-04-16 14:02Z 61° 39' S, 78° 0' W Click for more
1089032 CTD/STD cast 2011-04-16 16:06Z to 2011-04-16 16:52Z 61° 45' S, 78° 0' W Click for more
1089044 CTD/STD cast 2011-04-12 02:07Z to 2011-04-12 02:56Z 56° 55' S, 78° 0' W Click for more
1089056 CTD/STD cast 2011-04-16 18:59Z to 2011-04-16 19:38Z 61° 52' S, 78° 0' W Click for more
1089068 CTD/STD cast 2011-04-16 21:30Z to 2011-04-16 22:16Z 62° 0' S, 78° 0' W Click for more
1089081 CTD/STD cast 2011-04-17 01:27Z to 2011-04-17 02:55Z 62° 13' S, 78° 0' W Click for more
1089093 CTD/STD cast 2011-04-17 08:03Z to 2011-04-17 08:47Z 62° 26' S, 78° 0' W Click for more
1089100 CTD/STD cast 2011-04-17 11:21Z to 2011-04-17 12:03Z 62° 40' S, 78° 0' W Click for more
1089112 CTD/STD cast 2011-04-17 14:45Z to 2011-04-17 15:25Z 62° 53' S, 78° 0' W Click for more
1089124 CTD/STD cast 2011-04-17 18:32Z to 2011-04-17 19:58Z 63° 6' S, 78° 0' W Click for more
1089136 CTD/STD cast 2011-04-18 01:05Z to 2011-04-18 01:45Z 63° 19' S, 78° 0' W Click for more
1089148 CTD/STD cast 2011-04-18 04:13Z to 2011-04-18 04:57Z 63° 33' S, 78° 0' W Click for more
1089161 CTD/STD cast 2011-04-18 07:21Z to 2011-04-18 08:03Z 63° 46' S, 78° 0' W Click for more
1089173 CTD/STD cast 2011-04-12 07:24Z to 2011-04-12 08:20Z 57° 19' S, 78° 0' W Click for more
1089185 CTD/STD cast 2011-04-18 11:15Z to 2011-04-18 12:39Z 64° 0' S, 78° 0' W Click for more
1089197 CTD/STD cast 2011-04-21 09:53Z to 2011-04-21 11:07Z 59° 0' S, 55° 51' W Click for more
1089204 CTD/STD cast 2011-04-21 16:07Z to 2011-04-21 17:18Z 58° 40' S, 56° 3' W Click for more
1089216 CTD/STD cast 2011-04-21 22:14Z to 2011-04-21 23:24Z 58° 21' S, 56° 13' W Click for more
1089228 CTD/STD cast 2011-04-22 05:34Z to 2011-04-22 06:47Z 58° 3' S, 56° 27' W Click for more
1089241 CTD/STD cast 2011-04-22 11:31Z to 2011-04-22 12:40Z 57° 43' S, 56° 38' W Click for more
1089253 CTD/STD cast 2011-04-22 17:31Z to 2011-04-22 18:40Z 57° 25' S, 56° 50' W Click for more
1089265 CTD/STD cast 2011-04-23 12:24Z to 2011-04-23 13:49Z 57° 5' S, 57° 1' W Click for more
1089277 CTD/STD cast 2011-04-23 19:18Z to 2011-04-23 20:20Z 56° 46' S, 57° 13' W Click for more
1089289 CTD/STD cast 2011-04-24 03:12Z to 2011-04-24 04:28Z 56° 28' S, 57° 25' W Click for more
1089290 CTD/STD cast 2011-04-12 12:20Z to 2011-04-12 13:48Z 57° 45' S, 78° 0' W Click for more
1089308 CTD/STD cast 2011-04-24 07:00Z to 2011-04-24 07:48Z 56° 28' S, 57° 25' W Click for more
1089321 CTD/STD cast 2011-04-24 11:29Z to 2011-04-24 12:36Z 56° 9' S, 57° 36' W Click for more
1089333 CTD/STD cast 2011-04-24 17:00Z to 2011-04-24 18:27Z 55° 50' S, 57° 48' W Click for more
1089345 CTD/STD cast 2011-04-25 00:43Z to 2011-04-25 01:59Z 55° 31' S, 58° 0' W Click for more
1089357 CTD/STD cast 2011-04-25 06:09Z to 2011-04-25 07:09Z 55° 8' S, 58° 0' W Click for more
1089369 CTD/STD cast 2011-04-25 14:29Z to 2011-04-25 15:17Z 55° 4' S, 57° 58' W Click for more
1089370 CTD/STD cast 2011-04-12 19:16Z to 2011-04-12 20:07Z 58° 10' S, 78° 0' W Click for more
1089382 CTD/STD cast 2011-04-13 00:24Z to 2011-04-13 01:13Z 58° 34' S, 78° 0' W Click for more
1089394 CTD/STD cast 2011-04-13 06:16Z to 2011-04-13 07:54Z 59° 0' S, 78° 0' W Click for more
1089401 CTD/STD cast 2011-04-13 13:40Z to 2011-04-13 14:31Z 59° 12' S, 78° 0' W Click for more
1716401 Turbulence energy dissipation probe 2011-04-22 17:26Z to 2011-04-22 21:34Z 57° 25' S, 56° 50' W Click for more
1716413 Turbulence energy dissipation probe 2011-04-23 19:06Z to 2011-04-23 23:09Z 56° 46' S, 57° 13' W Click for more
1716425 Turbulence energy dissipation probe 2011-04-24 03:06Z to 2011-04-24 06:50Z 56° 28' S, 57° 25' W Click for more
1716437 Turbulence energy dissipation probe 2011-04-24 16:52Z to 2011-04-24 22:12Z 55° 49' S, 57° 44' W Click for more
1716449 Turbulence energy dissipation probe 2011-04-25 06:02Z to 2011-04-25 13:48Z 55° 8' S, 58° 0' W Click for more
1716450 Turbulence energy dissipation probe 2011-04-13 06:09Z to 2011-04-13 12:08Z 59° 0' S, 78° 0' W Click for more
1716462 Turbulence energy dissipation probe 2011-04-14 15:01Z to 2011-04-14 20:47Z 60° 14' S, 78° 0' W Click for more
1716474 Turbulence energy dissipation probe 2011-04-16 03:37Z to 2011-04-16 09:30Z 61° 24' S, 78° 0' W Click for more
1716486 Turbulence energy dissipation probe 2011-04-17 01:07Z to 2011-04-17 06:45Z 62° 13' S, 78° 0' W Click for more
1716498 Turbulence energy dissipation probe 2011-04-17 18:19Z to 2011-04-17 23:38Z 63° 6' S, 78° 0' W Click for more
1716505 Turbulence energy dissipation probe 2011-04-18 11:15Z to 2011-04-18 15:55Z 64° 0' S, 78° 0' W Click for more
1716517 Turbulence energy dissipation probe 2011-04-21 09:47Z to 2011-04-21 14:09Z 59° 0' S, 55° 51' W Click for more
1716529 Turbulence energy dissipation probe 2011-04-21 21:59Z to 2011-04-22 02:46Z 58° 22' S, 56° 15' W Click for more
1717662 Acoustic doppler current profiler 2011-04-11 15:49Z 56° 30' S, 78° 0' W Click for more
1717674 Acoustic doppler current profiler 2011-04-12 02:13Z 56° 55' S, 78° 0' W Click for more
1717686 Acoustic doppler current profiler 2011-04-12 07:37Z 57° 19' S, 78° 0' W Click for more
1717698 Acoustic doppler current profiler 2011-04-12 12:32Z 57° 45' S, 78° 0' W Click for more
1717705 Acoustic doppler current profiler 2011-04-12 19:23Z 58° 10' S, 78° 0' W Click for more
1717717 Acoustic doppler current profiler 2011-04-13 00:30Z 58° 34' S, 78° 0' W Click for more
1717729 Acoustic doppler current profiler 2011-04-13 06:30Z 59° 0' S, 78° 0' W Click for more
1717730 Acoustic doppler current profiler 2011-04-13 13:47Z 59° 12' S, 78° 0' W Click for more
1717742 Acoustic doppler current profiler 2011-04-13 21:13Z 59° 36' S, 78° 0' W Click for more
1717754 Acoustic doppler current profiler 2011-04-14 04:31Z 59° 48' S, 78° 0' W Click for more
1717766 Acoustic doppler current profiler 2011-04-14 08:26Z 60° 0' S, 78° 0' W Click for more
1717778 Acoustic doppler current profiler 2011-04-14 11:37Z 60° 7' S, 78° 0' W Click for more
1717791 Acoustic doppler current profiler 2011-04-14 15:21Z 60° 14' S, 78° 0' W Click for more
1717809 Acoustic doppler current profiler 2011-04-15 01:48Z 60° 21' S, 78° 0' W Click for more
1717810 Acoustic doppler current profiler 2011-04-15 04:48Z 60° 28' S, 78° 0' W Click for more
1717822 Acoustic doppler current profiler 2011-04-15 07:39Z 60° 35' S, 78° 0' W Click for more
1717834 Acoustic doppler current profiler 2011-04-15 10:35Z 60° 42' S, 78° 0' W Click for more
1717846 Acoustic doppler current profiler 2011-04-15 13:20Z 60° 49' S, 78° 0' W Click for more
1717858 Acoustic doppler current profiler 2011-04-15 16:08Z 60° 56' S, 78° 0' W Click for more
1717871 Acoustic doppler current profiler 2011-04-15 18:54Z 61° 3' S, 78° 0' W Click for more
1717883 Acoustic doppler current profiler 2011-04-15 21:41Z 61° 10' S, 78° 0' W Click for more
1717895 Acoustic doppler current profiler 2011-04-16 00:27Z 61° 17' S, 78° 0' W Click for more
1717902 Acoustic doppler current profiler 2011-04-16 03:52Z 61° 24' S, 78° 0' W Click for more
1717914 Acoustic doppler current profiler 2011-04-16 10:37Z 61° 31' S, 78° 0' W Click for more
1717926 Acoustic doppler current profiler 2011-04-16 13:26Z 61° 39' S, 78° 0' W Click for more
1717938 Acoustic doppler current profiler 2011-04-16 16:16Z 61° 45' S, 78° 0' W Click for more
1717951 Acoustic doppler current profiler 2011-04-16 19:02Z 61° 52' S, 78° 0' W Click for more
1717963 Acoustic doppler current profiler 2011-04-16 21:34Z 62° 0' S, 78° 0' W Click for more
1717975 Acoustic doppler current profiler 2011-04-17 01:31Z 62° 13' S, 78° 0' W Click for more
1717987 Acoustic doppler current profiler 2011-04-17 08:12Z 62° 26' S, 78° 0' W Click for more
1717999 Acoustic doppler current profiler 2011-04-17 11:27Z 62° 40' S, 78° 0' W Click for more
1718002 Acoustic doppler current profiler 2011-04-17 14:50Z 62° 53' S, 78° 0' W Click for more
1718014 Acoustic doppler current profiler 2011-04-17 18:37Z 63° 6' S, 78° 0' W Click for more
1718026 Acoustic doppler current profiler 2011-04-18 01:09Z 63° 19' S, 78° 0' W Click for more
1718038 Acoustic doppler current profiler 2011-04-18 04:22Z 63° 33' S, 78° 0' W Click for more
1718051 Acoustic doppler current profiler 2011-04-18 07:28Z 63° 46' S, 78° 0' W Click for more
1718063 Acoustic doppler current profiler 2011-04-18 11:27Z 64° 0' S, 78° 0' W Click for more
1718075 Acoustic doppler current profiler 2011-04-21 10:02Z 59° 0' S, 55° 51' W Click for more
1718087 Acoustic doppler current profiler 2011-04-21 16:13Z 58° 40' S, 56° 3' W Click for more
1718099 Acoustic doppler current profiler 2011-04-21 22:18Z 58° 22' S, 56° 14' W Click for more
1718106 Acoustic doppler current profiler 2011-04-22 05:40Z 58° 3' S, 56° 27' W Click for more
1718118 Acoustic doppler current profiler 2011-04-22 11:40Z 57° 43' S, 56° 38' W Click for more
1718131 Acoustic doppler current profiler 2011-04-22 17:39Z 57° 25' S, 56° 50' W Click for more
1718143 Acoustic doppler current profiler 2011-04-23 12:32Z 57° 6' S, 57° 2' W Click for more
1718155 Acoustic doppler current profiler 2011-04-23 19:21Z 56° 46' S, 57° 13' W Click for more
1718167 Acoustic doppler current profiler 2011-04-24 03:20Z 56° 28' S, 57° 25' W Click for more
1718179 Acoustic doppler current profiler 2011-04-24 07:08Z 56° 28' S, 57° 25' W Click for more
1718180 Acoustic doppler current profiler 2011-04-24 11:34Z 56° 9' S, 57° 37' W Click for more
1718192 Acoustic doppler current profiler 2011-04-24 17:06Z 55° 49' S, 57° 49' W Click for more
1718211 Acoustic doppler current profiler 2011-04-25 00:47Z 55° 31' S, 58° 0' W Click for more
1718223 Acoustic doppler current profiler 2011-04-25 06:18Z 55° 8' S, 58° 0' W Click for more
1718235 Acoustic doppler current profiler 2011-04-25 14:39Z 55° 4' S, 57° 58' W Click for more
1813521 Acoustic doppler current profiler 2011-04-11 15:44:18Z to 2011-04-26 10:57:40Z From 56° 30' S, 78° 0' W to 56° 30' S, 78° 0' W Click for more

Project Database

# Events Gear Type Parameters Held
53 CTD frame plus rosette sampler Water body released tracers
Chlorofluorocarbon concentrations in the water column
78 Sample taken from ship's non-toxic supply Salinity of the water column

Note: Parameter terms are taken from the BODC Parameter Discovery Vocabulary XML (SKOS)

References

Track Charts

Track Chart

Reports

Cruise Report