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BODC Cruise Metadata Report for RRS James Clark Ross (74JC) cruise JR20121114 (JR280)

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 JR20121114 (JR280)
Short name JR20121114 (JR280)
Objectives and Narrative JR280 is a 16 day science cruise to the South Georgia region nested inside a combined logistic and science leg during voyage 22 of the RRS James Clark Ross. As part of the logistics element the ship undertook base reliefs at Bird Island and King Edward Point (South Georgia), and Signy (South Orkney Islands). During the science part of the cruise we undertook the Western Core Box survey to determine the distribution and biomass of krill northwest of South Georgia, refurbished the biological moorings in the South Georgia region and deployed a new biological mooring near Signy. In addition collaborators from the Max Planck Institute in Bremen investigated the N2O emission potential of the Antarctic krill Euphausia superba.

Since 1981 BAS have undertaken cruises to determine krill biomass as part of the ongoing assessment of the status of the marine ecosystem in the region of South Georgia. This unique time series, known as the Western Core Box, is part of the Ecosystem Programme contribution to BAS national capability. It comprises an acoustic grid survey of 8 transects each of 80 km in length, together with associated net and oceanographic sampling and the calibration of the acoustic instrumentation. Net sampling to catch live krill for experiments and observations was also undertaken at night.

In addition to the acoustic survey, which covers a wide area but has limited temporal coverage, there are three moorings (one in the Western Core Box, one southwest and one northwest of South Georgia) to provide a temporal context. These moorings are recovered during the cruise, refurbished and data downloaded, and then redeployed later in the cruise.
Ship RRS James Clark Ross
Departure Port Stanley, Falkland Islands (Malvinas)
Departure Date 2012-11-14
Arrival Port Stanley, Falkland Islands (Malvinas)
Arrival Date 2012-12-11
Principal Scientist(s) Jonathan L Watkins (British Antarctic Survey)
Responsible Organisation British Antarctic Survey
Associated Project(s) Ecosystems Programme: Western Core Box
IHB Sea Areas Visited South West Atlantic Ocean (limit 20W), Southern Ocean
Marsden Squares Visited 483/484/520
Work Area Description South Georgia
Work Area Bounding Polygon 70S,50W; 50S,50W; 50S,30W; 70S,30W; 70S,50W
Southern Limit 70S
Northern Limit 50S
Western Limit 50W
Eastern Limit 30W

Cruise Inventory Datasets

Physical oceanography  
Bathythermograph Quantity: number of profiles = 28
Description: XBT  
CTD stations Quantity: number of profiles = 16
Description: CTD  
CTD stations Quantity: number of profiles = 6
Description: CTD  
Subsurface temperature measurements Description: Oxygen microsensors, pH  
Surface measurements underway (T,S) Quantity: track kilometres = 7200
Description: ADCP  
Water bottle stations Quantity: number of samples = 43
Description: CTD Water Samples  
Chemical oceanography  
Oxygen Description: Oxygen microsensors, pH  
pH Description: Oxygen microsensors, pH  
Biology and fisheries  
Acoustic reflection on marine organisms. Quantity: activity duration in days = 25
Description: EK60 Multi-frequency scientific echo-sounder  
Biochemical measurements (eg lipids, amino acids) Quantity: number of samples = 43
Description: Gas samples from krill incubation (recording 45N2O and 46N2O)  
Zooplankton Quantity: number of specimens = 815
Description: RMT8 - Macrozooplankton samples  
Zooplankton Quantity: number of specimens = 800
Description: RMT8 - krill length measurements and photography  
Zooplankton Quantity: number of samples = 43
Description: Krill samples  
Meteorology  
Routine standard measurements Quantity: track kilometres = 7200
Description: Onboard ships meteorological  
Geology and geophysics  
Multi-beam echosounding Quantity: number of surveys = 2
Description: EM122 Swath  
Single-beam echosounding Quantity: track kilometres = 7200
Description: EA600 Single Beam  

Cruise Inventory Mooring/Buoy Operations

Latitude Longitude Data type Description
55° 14' S 41° 13' W CTD stations Site: Deployed - P2 Water Depth: 3383m Instrumentation: Aquadoop current meter (1500m), Sediment Trap (1500m), Main Buoy - SBE CTD, RDI ADCP (near surface)
60° 34' S 46° 31' W CTD stations Site: Deployed - Signy Inaccessible Trench Water Depth: 700m Instrumentation: CTD, ADCP
53° 48' S 37° 55' W CTD stations Site: Deployed - Western Core Box Shallow Mooring Water Depth: 300m Instrumentation: Main buoy - (~240m) - ASL WCP, SBE CTD, RDI ADCP
55° 12' S 41° 6' W CTD stations Site: Recovered - P2 Water Depth: 3200m Instrumentation: Aquadoop current meter (1500m), Sediment Trap (1500m), Main Buoy - SBE CTD, RDI ADCP (near surface)
52° 48' S 40° 6' W CTD stations Site: Recovered - P3 Water Depth: 3700m Instrumentation: Aquadoop current meter (2000m), Sediment Trap (2000m), Main Buoy - SBE CTD, RDI ADCP (near surface)
53° 48' S 37° 56' W CTD stations Site: Recovered - Western Core Box Shallow Mooring Water Depth: 300m Instrumentation: Sonar bell (10m above release), Main buoy - (~240m) - ASL WCP, SBE CTD, RDI ADCP
55° 14' S 41° 13' W Current meters Site: Deployed - P2 Water Depth: 3383m Instrumentation: Aquadoop current meter (1500m), Sediment Trap (1500m), Main Buoy - SBE CTD, RDI ADCP (near surface)
55° 12' S 41° 6' W Current meters Site: Recovered - P2 Water Depth: 3200m Instrumentation: Aquadoop current meter (1500m), Sediment Trap (1500m), Main Buoy - SBE CTD, RDI ADCP (near surface)
52° 48' S 40° 6' W Current meters Site: Recovered - P3 Water Depth: 3700m Instrumentation: Aquadoop current meter (2000m), Sediment Trap (2000m), Main Buoy - SBE CTD, RDI ADCP (near surface)
55° 14' S 41° 13' W Current profiler (eg ADCP) Site: Deployed - P2 Water Depth: 3383m Instrumentation: Aquadoop current meter (1500m), Sediment Trap (1500m), Main Buoy - SBE CTD, RDI ADCP (near surface)
60° 34' S 46° 31' W Current profiler (eg ADCP) Site: Deployed - Signy Inaccessible Trench Water Depth: 700m Instrumentation: CTD, ADCP
53° 48' S 37° 55' W Current profiler (eg ADCP) Site: Deployed - Western Core Box Shallow Mooring Water Depth: 300m Instrumentation: Main buoy - (~240m) - ASL WCP, SBE CTD, RDI ADCP
55° 12' S 41° 6' W Current profiler (eg ADCP) Site: Recovered - P2 Water Depth: 3200m Instrumentation: Aquadoop current meter (1500m), Sediment Trap (1500m), Main Buoy - SBE CTD, RDI ADCP (near surface)
52° 48' S 40° 6' W Current profiler (eg ADCP) Site: Recovered - P3 Water Depth: 3700m Instrumentation: Aquadoop current meter (2000m), Sediment Trap (2000m), Main Buoy - SBE CTD, RDI ADCP (near surface)
53° 48' S 37° 56' W Current profiler (eg ADCP) Site: Recovered - Western Core Box Shallow Mooring Water Depth: 300m Instrumentation: Sonar bell (10m above release), Main buoy - (~240m) - ASL WCP, SBE CTD, RDI ADCP
53° 48' S 37° 55' W Long/short range side scan sonar Site: Deployed - Western Core Box Shallow Mooring Water Depth: 300m Instrumentation: Main buoy - (~240m) - ASL WCP, SBE CTD, RDI ADCP
53° 48' S 37° 56' W Long/short range side scan sonar Site: Recovered - Western Core Box Shallow Mooring Water Depth: 300m Instrumentation: Sonar bell (10m above release), Main buoy - (~240m) - ASL WCP, SBE CTD, RDI ADCP
55° 14' S 41° 13' W Sediment traps Site: Deployed - P2 Water Depth: 3383m Instrumentation: Aquadoop current meter (1500m), Sediment Trap (1500m), Main Buoy - SBE CTD, RDI ADCP (near surface)
55° 12' S 41° 6' W Sediment traps Site: Recovered - P2 Water Depth: 3200m Instrumentation: Aquadoop current meter (1500m), Sediment Trap (1500m), Main Buoy - SBE CTD, RDI ADCP (near surface)
52° 48' S 40° 6' W Sediment traps Site: Recovered - P3 Water Depth: 3700m Instrumentation: Aquadoop current meter (2000m), Sediment Trap (2000m), Main Buoy - SBE CTD, RDI ADCP (near surface)
53° 48' S 37° 55' W Single-beam echosounding Site: Deployed - Western Core Box Shallow Mooring Water Depth: 300m Instrumentation: Main buoy - (~240m) - ASL WCP, SBE CTD, RDI ADCP
53° 48' S 37° 56' W Single-beam echosounding Site: Recovered - Western Core Box Shallow Mooring Water Depth: 300m Instrumentation: Sonar bell (10m above release), Main buoy - (~240m) - ASL WCP, SBE CTD, RDI ADCP

Summary of BODC Data Holdings for the Cruise

National Oceanographic Database

Summary

# Series Instrument Description Parameters
27 Bathythermograph (MBT/XBT) Reference numbers
Sound velocity and travel time in the water column
Temperature of the water column
Vertical spatial coordinates
15 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
Raw oxygen sensor output
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

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

Full List

BODC Reference Instrument Description Date/Time Location  
1793259 CTD/STD cast 2012-11-28 12:53Z 60° 34' S, 46° 34' W Click for more
1793260 CTD/STD cast 2012-11-29 23:01Z 55° 12' S, 41° 6' W Click for more
1793272 CTD/STD cast 2012-11-30 16:01Z 52° 48' S, 40° 7' W Click for more
1793284 CTD/STD cast 2012-12-01 20:27Z 53° 51' S, 39° 8' W Click for more
1793296 CTD/STD cast 2012-12-02 05:22Z 53° 29' S, 39° 15' W Click for more
1793303 CTD/STD cast 2012-12-02 20:34Z 53° 25' S, 38° 42' W Click for more
1793315 CTD/STD cast 2012-12-03 05:56Z 53° 47' S, 38° 34' W Click for more
1793327 CTD/STD cast 2012-12-03 21:56Z 53° 48' S, 37° 56' W Click for more
1793339 CTD/STD cast 2012-12-03 23:09Z 53° 42' S, 37° 58' W Click for more
1793340 CTD/STD cast 2012-12-04 07:05Z 53° 21' S, 38° 4' W Click for more
1793352 CTD/STD cast 2012-12-05 02:20Z 53° 40' S, 38° 5' W Click for more
1793364 CTD/STD cast 2012-12-05 11:28Z 54° 9' S, 36° 42' W Click for more
1793376 CTD/STD cast 2012-12-06 12:16Z 53° 48' S, 37° 56' W Click for more
1793388 CTD/STD cast 2012-12-07 11:12Z 52° 48' S, 40° 3' W Click for more
1793407 CTD/STD cast 2012-12-08 10:37Z 55° 12' S, 41° 3' W Click for more
1809847 Bathythermograph (MBT/XBT) 2012-12-01 09:01Z 54° 3' S, 39° 23' W Click for more
1809859 Bathythermograph (MBT/XBT) 2012-12-01 09:07Z 54° 2' S, 39° 24' W Click for more
1809860 Bathythermograph (MBT/XBT) 2012-12-01 10:12Z 53° 52' S, 39° 26' W Click for more
1809872 Bathythermograph (MBT/XBT) 2012-12-01 11:20Z 53° 42' S, 39° 30' W Click for more
1809884 Bathythermograph (MBT/XBT) 2012-12-01 12:29Z 53° 31' S, 39° 33' W Click for more
1809896 Bathythermograph (MBT/XBT) 2012-12-01 13:39Z 53° 21' S, 39° 36' W Click for more
1809903 Bathythermograph (MBT/XBT) 2012-12-02 09:00Z 53° 17' S, 39° 4' W Click for more
1809915 Bathythermograph (MBT/XBT) 2012-12-02 10:11Z 53° 27' S, 38° 58' W Click for more
1809927 Bathythermograph (MBT/XBT) 2012-12-02 11:20Z 53° 38' S, 38° 55' W Click for more
1809939 Bathythermograph (MBT/XBT) 2012-12-02 12:32Z 53° 49' S, 38° 52' W Click for more
1809940 Bathythermograph (MBT/XBT) 2012-12-02 13:41Z 53° 59' S, 38° 49' W Click for more
1809952 Bathythermograph (MBT/XBT) 2012-12-03 09:00Z 53° 55' S, 38° 13' W Click for more
1809964 Bathythermograph (MBT/XBT) 2012-12-03 10:08Z 53° 45' S, 38° 16' W Click for more
1809976 Bathythermograph (MBT/XBT) 2012-12-03 11:16Z 53° 34' S, 38° 19' W Click for more
1809988 Bathythermograph (MBT/XBT) 2012-12-03 12:26Z 53° 24' S, 38° 23' W Click for more
1810001 Bathythermograph (MBT/XBT) 2012-12-03 13:37Z 53° 13' S, 38° 27' W Click for more
1810013 Bathythermograph (MBT/XBT) 2012-12-04 09:30Z 53° 9' S, 37° 57' W Click for more
1810025 Bathythermograph (MBT/XBT) 2012-12-04 09:36Z 53° 10' S, 37° 57' W Click for more
1810037 Bathythermograph (MBT/XBT) 2012-12-04 10:47Z 53° 20' S, 37° 54' W Click for more
1810049 Bathythermograph (MBT/XBT) 2012-12-04 11:54Z 53° 31' S, 37° 51' W Click for more
1810050 Bathythermograph (MBT/XBT) 2012-12-04 13:02Z 53° 41' S, 37° 47' W Click for more
1810062 Bathythermograph (MBT/XBT) 2012-12-04 14:08Z 53° 52' S, 37° 43' W Click for more
1810074 Bathythermograph (MBT/XBT) 2012-12-04 14:50Z 53° 51' S, 37° 35' W Click for more
1810086 Bathythermograph (MBT/XBT) 2012-12-04 15:58Z 53° 40' S, 37° 39' W Click for more
1810098 Bathythermograph (MBT/XBT) 2012-12-04 17:05Z 53° 30' S, 37° 42' W Click for more
1810105 Bathythermograph (MBT/XBT) 2012-12-04 18:14Z 53° 19' S, 37° 46' W Click for more
1810117 Bathythermograph (MBT/XBT) 2012-12-04 19:24Z 53° 9' S, 37° 49' W Click for more

Project Database

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

References

Track Charts

Track Chart

Reports

Cruise Report