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BODC Cruise Metadata Report for RRS James Clark Ross (74JC) cruise JR20120327 (JR254E, JR257, JR272A)

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 JR20120327 (JR254E, JR257, JR272A)
Short name JR20120327 (JR254E, JR257, JR272A)
Objectives and Narrative JR272A cruise objectives were to re-occupy a CTD transect from the Northwest Weddell Sea to South Georgia to study the properties of bottom water as it leaves the Weddell Sea and enters the Scotia Sea. This is part of BAS Polar Oceans core science. The end of the transect close to South Georgia was not completed but there was no sign of bottom water by the point we finished the transect. A mooring was also deployed in South Orkney trough to add to an existing array. A quick (about 6 hours) CTD survey of Cumberland Bay was also completed.

JR257 cruise objectives were to collect a suite of cores made up of diatom- and carbonate-rich sediments from the Polar Front Zone of the SW Atlantic to reconstruct past changes in oceanographic conditions and frontal migrations. The SW Atlantic region is particularly crucial in climate studies as it exerts a disproportionately large influence on Southern Ocean circulation and modification of deep waters. This work is part of the marine component of the Chemistry and Past Climate core science programme and cores collected on this cruise will help determine the role of the Southern Ocean in climate change. Unfortunately, changes to the schedule and the forecasted weather prevented us from exploring the sea mounts in the Georgia Basin for sediments but we were able to collect a promising suite of cores with varying amounts of carbonate material in them from the Falkland Plateau, the North Scotia Ridge (NSR) and the South Georgia continental shelf.

JR254E cruise was dedicated to WAGES (Waves, Aerosols and Gas Exchanges Study),which is a joint project of the National Oceanographic Centre-Southampton and the University of Leeds and is a follow-on from the UK-SOLAS, HiWASE, SEASAW and DOGEE projects.

Throughout the cruise, direct measurements were performed with free drifting and tethered SPAR buoys and also from the ship's underway system. The buoys were deployed in different wind and wave conditions which is essential to improve the parameterisation in terms of mean meteorological and sea-state variables.

An acoustic resonator designed to study bubble size distributions was mounted on one of the SPAR buoys and several deployments were also performed. This line of work has been developed by the University of Southampton.
Ship RRS James Clark Ross
Departure Port Stanley, Falkland Islands (Malvinas)
Departure Date 2012-03-27
Arrival Port Stanley, Falkland Islands (Malvinas)
Arrival Date 2012-04-24
Principal Scientist(s) Claire S Allen (British Antarctic Survey), Hugh Venables (British Antarctic Survey), Margaret J Yelland (National Oceanography Centre, Southampton)
Responsible Organisation Federal Maritime and Hydrographic Agency
Associated Project(s) BAS Polar Oceans; Waves, Aerosols and Gas Exchange Study (WAGES); Chemistry and Past Climate
IHB Sea Areas Visited Southern Ocean
Marsden Squares Visited 482/483/484/485/518/519/520
Work Area Description Wedell Sea, Scotia Sea, Royal Bay (South Georgia) and Cumberland Bay (South Georgia)
Work Area Bounding Polygon 70S,60W; 50S,60W; 50S,20W; 70S,20W; 70S,60W
Southern Limit 70S
Northern Limit 50S
Western Limit 60W
Eastern Limit 20W

Cruise Inventory Datasets

Physical oceanography  
CTD stations Quantity: number of profiles = 38
Description: CTD casts  
Current profiler (eg ADCP) Quantity: number of profiles = 37
Description: Vertical current profiles from LADCP mounted on the CTD frame  
Current profiler (eg ADCP) Quantity: activity duration in days = 28
Description: Current measurements with the vessel-mounted ADCP  
Other physical oceanographic measurements Quantity: number of samples = 87
Description: Water samples collected from the underway system to determine salinity  
Surface measurements underway (T,S) Quantity: activity duration in days = 28
Description: Underway measurements of water temperature, conductivity, chlorophyll  
Water bottle stations Quantity: number of samples = 256
Description: Water samples collected from CTD bottles to determine salinity  
Chemical oceanography  
Other dissolved gases Quantity: activity duration in days = 28
Description: pCO2 underway measurements  
Biology and fisheries  
Biochemical measurements (eg lipids, amino acids) Quantity: number of samples = 30
Description: Water samples collected from CTD bottles to determine biomarker proxies  
Biochemical measurements (eg lipids, amino acids) Quantity: number of samples = 15
Description: Underway water samples to determine biomarker proxies  
Meteorology  
Routine standard measurements Quantity: activity duration in days = 28
Description: Underway measurements of air temperature, pressure, relative humidity, photosynthetically active radiation, active radiation, wind speed and velocity  
Geology and geophysics  
Core - soft bottom Quantity: number of deployments = 9
Description: Box core  
Core - soft bottom Quantity: number of deployments = 19
Description: Gravity core  
Multi-beam echosounding Quantity: activity duration in days = 28
Description: Multi-beam echosounder  
Single-beam echosounding Quantity: activity duration in days = 28
Description: Single Beam echosounder  

Cruise Inventory Mooring/Buoy Operations

Latitude Longitude Data type Description
60° 33' S 41° 37' W Current meters The mooring was deployed with two aquadopps' measuring current direction, velocity components, temperature, pressure and tilt and a SBE37 measuring temperature and conductivity. Water depths for each instrument are as follow: SBE37- 2290 m, aquadopp 2259 m, aquadopp- 2009 m. Deployment date was 02Apr2012 at 19:31 UTC on the eastern side of Orkney Passage
60° 33' S 41° 38' W Instrumented wave measurements Bubble Spar buoy deployed and recovered on 02/04 to obtain wave measurements
61° 39' S 31° 6' W Instrumented wave measurements Bubble Spar buoy deployed and recovered on 06/04 to obtain wave measurements
58° 38' S 30° 49' W Instrumented wave measurements Bubble Spar buoy deployed and recovered on 07/04 to obtain wave measurements
52° 58' S 43° 22' W Instrumented wave measurements Bubble Spar buoy deployed and recovered on 12/04 to obtain wave measurements
54° 25' S 35° 44' W Instrumented wave measurements Bubble Spar buoy deployed and recovered on 17/04 to obtain wave measurements
54° 6' S 36° 28' W Instrumented wave measurements Bubble Spar buoy deployed and recovered on 18/04 to obtain wave measurements
51° 57' S 45° 32' W Instrumented wave measurements Bubble Spar buoy deployed and recovered on 22/04 to obtain wave measurements
51° 26' S 57° 46' W Instrumented wave measurements Bubble Spar buoy deployed and recovered on 28/03 to obtain wave measurements
51° 25' S 57° 34' W Instrumented wave measurements Bubble Spar buoy deployed and recovered on 30/03 to obtain wave measurements
52° 58' S 43° 22' W Instrumented wave measurements Free drifting buoy deployed and recovered on 12/04 to obtain wave measurements
53° 44' S 38° 9' W Instrumented wave measurements Free drifting buoy deployed and recovered on 15/04 to obtain wave measurements
51° 55' S 45° 31' W Instrumented wave measurements Free drifting buoy deployed and recovered on 22/04 to obtain wave measurements
51° 25' S 57° 46' W Instrumented wave measurements Tethered Spar buoy and recovered deployed on 28/03 to obtain wave measurements
63° 4' S 30° 7' W Instrumented wave measurements Tethered Spar buoy deployed and recovered on 04/04 to obtain wave measurements
63° 20' S 29° 34' W Instrumented wave measurements Tethered Spar buoy deployed and recovered on 04/04 to obtain wave measurements
61° 33' S 31° 6' W Instrumented wave measurements Tethered Spar buoy deployed and recovered on 06/04 to obtain wave measurements
59° 3' S 30° 50' W Instrumented wave measurements Tethered Spar buoy deployed and recovered on 07/04 to obtain wave measurements
53° 5' S 43° 23' W Instrumented wave measurements Tethered Spar buoy deployed and recovered on 12/04 to obtain wave measurements
53° 44' S 38° 9' W Instrumented wave measurements Tethered Spar buoy deployed and recovered on 15/04 to obtain wave measurements
51° 55' S 45° 31' W Instrumented wave measurements Tethered Spar buoy deployed and recovered on 22/04 to obtain wave measurements
51° 27' S 57° 40' W Instrumented wave measurements Tethered Spar buoy deployed on 28/03 and recovered on 29/03 to obtain wave measurements
51° 25' S 57° 34' W Instrumented wave measurements Tethered Spar buoy deployed on 29/03 and recovered on 30/03 to obtain wave measurements
51° 48' S 57° 48' W Instrumented wave measurements Tethered spar buoy deployed on 27/03 and recovered on 28/03 to obtain wave measurements
60° 33' S 41° 38' W Other physical oceanographic measurements Bubble Spar buoy deployed and recovered on 02/04 to obtain wave measurements
61° 39' S 31° 6' W Other physical oceanographic measurements Bubble Spar buoy deployed and recovered on 06/04 to obtain wave measurements
58° 38' S 30° 49' W Other physical oceanographic measurements Bubble Spar buoy deployed and recovered on 07/04 to obtain wave measurements
52° 58' S 43° 22' W Other physical oceanographic measurements Bubble Spar buoy deployed and recovered on 12/04 to obtain wave measurements
54° 25' S 35° 44' W Other physical oceanographic measurements Bubble Spar buoy deployed and recovered on 17/04 to obtain wave measurements
54° 6' S 36° 28' W Other physical oceanographic measurements Bubble Spar buoy deployed and recovered on 18/04 to obtain wave measurements
51° 57' S 45° 32' W Other physical oceanographic measurements Bubble Spar buoy deployed and recovered on 22/04 to obtain wave measurements
51° 26' S 57° 46' W Other physical oceanographic measurements Bubble Spar buoy deployed and recovered on 28/03 to obtain wave measurements
51° 25' S 57° 34' W Other physical oceanographic measurements Bubble Spar buoy deployed and recovered on 30/03 to obtain wave measurements
60° 33' S 41° 37' W Other physical oceanographic measurements The mooring was deployed with two aquadopps' measuring current direction, velocity components, temperature, pressure and tilt and a SBE37 measuring temperature and conductivity. Water depths for each instrument are as follow: SBE37- 2290 m, aquadopp 2259 m, aquadopp- 2009 m. Deployment date was 02Apr2012 at 19:31 UTC on the eastern side of Orkney Passage

Summary of BODC Data Holdings for the Cruise

National Oceanographic Database

Summary

# Series Instrument Description Parameters
2 Acoustic current meter Date and time
Horizontal velocity of the water column (currents)
Moored instrument depth
Platform or instrument orientation
Reference numbers
Temperature of the water column
Vertical velocity of the water column (currents)
37 Acoustic doppler current profiler Horizontal velocity of the water column (currents)
Reference numbers
Vertical spatial coordinates
38 CTD/STD cast Chlorophyll pigment concentrations in water bodies
Density of the water column
Dissolved oxygen parameters in the water column
Electrical conductivity of the water column
Reference numbers
Salinity of the water column
Temperature of the water column
Transmittance and attenuance of the water column
Vertical spatial coordinates
Visible waveband radiance and irradiance measurements in the water column
1 Moored CTD Date and time
Electrical conductivity of the water column
Reference numbers
Temperature of the water column

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

Full List

BODC Reference Instrument Description Date/Time Location  
1223533 Moored CTD 2012-04-02 20:15Z to 2013-03-30 10:29Z 60° 33' S, 41° 37' W Click for more
1362834 Acoustic current meter 2012-04-02 20:15Z to 2013-03-30 10:30Z 60° 33' S, 41° 37' W Click for more
1362846 Acoustic current meter 2012-04-02 20:15Z to 2013-03-30 10:30Z 60° 33' S, 41° 37' W Click for more
1796104 CTD/STD cast 2012-03-30 13:23Z 53° 0' S, 58° 2' W Click for more
1796116 CTD/STD cast 2012-04-02 20:27Z 60° 33' S, 41° 37' W Click for more
1796128 CTD/STD cast 2012-04-04 13:59Z 63° 21' S, 29° 34' W Click for more
1796141 CTD/STD cast 2012-04-04 19:27Z 63° 4' S, 30° 6' W Click for more
1796153 CTD/STD cast 2012-04-05 01:22Z 62° 46' S, 30° 42' W Click for more
1796165 CTD/STD cast 2012-04-05 07:23Z 62° 29' S, 31° 15' W Click for more
1796177 CTD/STD cast 2012-04-05 12:58Z 62° 4' S, 31° 10' W Click for more
1796189 CTD/STD cast 2012-04-05 19:17Z 61° 39' S, 31° 6' W Click for more
1796190 CTD/STD cast 2012-04-06 03:07Z 61° 33' S, 31° 6' W Click for more
1796208 CTD/STD cast 2012-04-06 09:23Z 61° 10' S, 31° 3' W Click for more
1796221 CTD/STD cast 2012-04-06 12:24Z 61° 6' S, 31° 2' W Click for more
1796233 CTD/STD cast 2012-04-06 17:22Z 60° 42' S, 31° 0' W Click for more
1796245 CTD/STD cast 2012-04-06 21:09Z 60° 19' S, 30° 57' W Click for more
1796257 CTD/STD cast 2012-04-07 01:38Z 59° 59' S, 30° 55' W Click for more
1796269 CTD/STD cast 2012-04-07 05:49Z 59° 46' S, 30° 54' W Click for more
1796270 CTD/STD cast 2012-04-07 10:36Z 59° 26' S, 30° 51' W Click for more
1796282 CTD/STD cast 2012-04-07 15:54Z 59° 3' S, 30° 49' W Click for more
1796294 CTD/STD cast 2012-04-07 23:37Z 58° 37' S, 30° 49' W Click for more
1796301 CTD/STD cast 2012-04-08 09:16Z 58° 12' S, 30° 49' W Click for more
1796313 CTD/STD cast 2012-04-08 14:36Z 57° 48' S, 30° 49' W Click for more
1796325 CTD/STD cast 2012-04-08 20:24Z 57° 27' S, 31° 19' W Click for more
1796337 CTD/STD cast 2012-04-09 02:41Z 57° 7' S, 31° 49' W Click for more
1796349 CTD/STD cast 2012-04-11 09:46Z 53° 35' S, 42° 50' W Click for more
1796350 CTD/STD cast 2012-04-13 13:33Z 52° 52' S, 41° 47' W Click for more
1796362 CTD/STD cast 2012-04-16 21:06Z 53° 44' S, 38° 9' W Click for more
1796374 CTD/STD cast 2012-04-18 11:11Z 54° 21' S, 36° 22' W Click for more
1796386 CTD/STD cast 2012-04-18 11:51Z 54° 19' S, 36° 23' W Click for more
1796398 CTD/STD cast 2012-04-18 12:22Z 54° 18' S, 36° 24' W Click for more
1796405 CTD/STD cast 2012-04-18 13:07Z 54° 15' S, 36° 26' W Click for more
1796417 CTD/STD cast 2012-04-18 13:42Z 54° 14' S, 36° 26' W Click for more
1796429 CTD/STD cast 2012-04-18 14:12Z 54° 13' S, 36° 25' W Click for more
1796430 CTD/STD cast 2012-04-18 14:39Z 54° 13' S, 36° 26' W Click for more
1796442 CTD/STD cast 2012-04-18 15:10Z 54° 13' S, 36° 27' W Click for more
1796454 CTD/STD cast 2012-04-18 15:37Z 54° 13' S, 36° 27' W Click for more
1796466 CTD/STD cast 2012-04-18 16:01Z 54° 13' S, 36° 28' W Click for more
1796478 CTD/STD cast 2012-04-18 16:31Z 54° 12' S, 36° 28' W Click for more
1796491 CTD/STD cast 2012-04-18 17:01Z 54° 12' S, 36° 28' W Click for more
1796509 CTD/STD cast 2012-04-18 17:49Z 54° 12' S, 36° 22' W Click for more
1797642 Acoustic doppler current profiler 2012-03-30 19:10Z 53° 0' S, 58° 2' W Click for more
1797654 Acoustic doppler current profiler 2012-04-02 20:19Z 60° 33' S, 41° 37' W Click for more
1797666 Acoustic doppler current profiler 2012-04-04 13:48Z 63° 21' S, 29° 34' W Click for more
1797678 Acoustic doppler current profiler 2012-04-04 19:23Z 63° 4' S, 30° 6' W Click for more
1797691 Acoustic doppler current profiler 2012-04-05 01:13Z 62° 46' S, 30° 42' W Click for more
1797709 Acoustic doppler current profiler 2012-04-05 07:18Z 62° 29' S, 31° 15' W Click for more
1797710 Acoustic doppler current profiler 2012-04-05 12:52Z 62° 4' S, 31° 10' W Click for more
1797722 Acoustic doppler current profiler 2012-04-05 19:11Z 61° 39' S, 31° 6' W Click for more
1797734 Acoustic doppler current profiler 2012-04-06 02:57Z 61° 33' S, 31° 6' W Click for more
1797746 Acoustic doppler current profiler 2012-04-06 09:13Z 61° 10' S, 31° 3' W Click for more
1797758 Acoustic doppler current profiler 2012-04-06 12:16Z 61° 6' S, 31° 2' W Click for more
1797771 Acoustic doppler current profiler 2012-04-06 17:17Z 60° 42' S, 31° 0' W Click for more
1797783 Acoustic doppler current profiler 2012-04-06 21:07Z 60° 19' S, 30° 57' W Click for more
1797795 Acoustic doppler current profiler 2012-04-07 01:30Z 59° 59' S, 30° 55' W Click for more
1797802 Acoustic doppler current profiler 2012-04-07 05:37Z 59° 46' S, 30° 54' W Click for more
1797814 Acoustic doppler current profiler 2012-04-07 10:30Z 59° 26' S, 30° 51' W Click for more
1797826 Acoustic doppler current profiler 2012-04-07 15:47Z 59° 3' S, 30° 49' W Click for more
1797838 Acoustic doppler current profiler 2012-04-07 23:29Z 58° 37' S, 30° 49' W Click for more
1797851 Acoustic doppler current profiler 2012-04-08 09:09Z 58° 12' S, 30° 49' W Click for more
1797863 Acoustic doppler current profiler 2012-04-08 14:29Z 57° 48' S, 30° 49' W Click for more
1797875 Acoustic doppler current profiler 2012-04-08 20:18Z 57° 27' S, 31° 19' W Click for more
1797887 Acoustic doppler current profiler 2012-04-09 02:34Z 57° 7' S, 31° 49' W Click for more
1797899 Acoustic doppler current profiler 2012-04-11 09:39Z 53° 35' S, 42° 50' W Click for more
1797906 Acoustic doppler current profiler 2012-04-13 13:26Z 52° 52' S, 41° 47' W Click for more
1797918 Acoustic doppler current profiler 2012-04-18 11:04Z 54° 21' S, 36° 21' W Click for more
1797931 Acoustic doppler current profiler 2012-04-18 11:47Z 54° 19' S, 36° 23' W Click for more
1797943 Acoustic doppler current profiler 2012-04-18 12:18Z 54° 18' S, 36° 24' W Click for more
1797955 Acoustic doppler current profiler 2012-04-18 13:02Z 54° 15' S, 36° 26' W Click for more
1797967 Acoustic doppler current profiler 2012-04-18 13:37Z 54° 14' S, 36° 26' W Click for more
1797979 Acoustic doppler current profiler 2012-04-18 14:08Z 54° 13' S, 36° 25' W Click for more
1797980 Acoustic doppler current profiler 2012-04-18 14:36Z 54° 13' S, 36° 26' W Click for more
1797992 Acoustic doppler current profiler 2012-04-18 15:06Z 54° 13' S, 36° 27' W Click for more
1798006 Acoustic doppler current profiler 2012-04-18 15:34Z 54° 13' S, 36° 27' W Click for more
1798018 Acoustic doppler current profiler 2012-04-18 15:57Z 54° 13' S, 36° 28' W Click for more
1798031 Acoustic doppler current profiler 2012-04-18 16:27Z 54° 12' S, 36° 28' W Click for more
1798043 Acoustic doppler current profiler 2012-04-18 16:58Z 54° 12' S, 36° 28' W Click for more
1798055 Acoustic doppler current profiler 2012-04-18 17:40Z 54° 12' S, 36° 22' W Click for more

Project Database

No data currently held for this cruise in the BODC Project Database

References

Track Charts

Track Chart

Track Chart

Reports

Cruise Report

Cruise Report