Planned maintenance — 18th January 2018 12:00 to 22nd January 2018 09:00 [more]

Cruise inventory

RRS James Clark Ross JR20141115 (JR304)

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS James Clark Ross (74JC)
Cruise identifierJR20141115 (JR304)
Cruise period2014-11-15 — 2014-12-17
StatusCompleted
Port of departurePunta Arenas, Chile
Port of returnStanley, Falkland Islands (Malvinas)
PurposeResearch
ObjectivesJR304 was a 19 day science cruise to the South Georgia region nested inside a combined logistic and science leg during voyage 24 of the RRS James Clark Ross. As part of the logistics element the ship undertook base reliefs at Signy (South Orkney Islands), and Bird Island and King Edward Point (South Georgia). 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 carried out a series of time stations across the Scotia Sea. BAS scientists were joined by collaborators from Sir Hardy Foundation for Ocean Science (SAHFOS), National Oceanography Centre (NOC) in addition to PhD students from the DTP's EnvEast, Spitfire and GW4+.

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 covered a wide area but had limited temporal coverage, there were three moorings (one in the Western Core Box, one southwest and one northwest of South Georgia) to provide a temporal context. These moorings were recovered during the cruise, refurbished and data downloaded, then redeployed later in the cruise.

NB The Cruise Report linked to below is an updated version from May 2016
Chief scientistJonathan L Watkins (British Antarctic Survey)
Coordinating bodyNatural Environment Research Council (NERC)
Cruise reportRRS James Clark Ross JR20141115 (JR304) cruise report jr304.pdf — access key 'C' (10.74 MB) 
Ocean/sea areas 
GeneralSouthern Ocean
SpecificScotia Sea
Track chartsRRS James Clark Ross JR20141115 (JR304) cruise track — jr304trk.pdf (0.07 MB) 
Measurements 
Physical oceanography 
Surface measurements underway (T,S)Quantity: number of deployments = 18
Description: ADCP at 200 sampling for 1 yr
Surface measurements underway (T,S)Quantity: number of deployments = 18
Description: ADCP
BathythermographQuantity: number of deployments = 26
Description: XBT
CTD stationsQuantity: number of profiles = 19
Description: CTD at 200 m sampling for 1 yr
CTD stationsQuantity: number of profiles = 19
Description: CTD
Biology and fisheries 
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: number of samples = 88
Description: Underway sampling for chlorophyll
Particulate organic matter (inc POC, PON)Quantity: number of samples = 18
Description: POC from vertical water bottle samples
Particulate organic matter (inc POC, PON)Quantity: number of profiles = 13
Description: Marine snow camera - vertical profiles
Particulate organic matter (inc POC, PON)Quantity: number of samples = 30
Description: Marine snow catcher samples - filtered and preserved
Sediment trapsQuantity: number of deployments = 3
Description: Sediment traps. Samples preserved
ZooplanktonQuantity: number of samples = 4
Description: Bongo nets - mesozooplankton for experiments or preserved
ZooplanktonQuantity: number of hauls = 4
Description: LHPR - oblique hauls from 1000 m to surface - gauzes frozen
ZooplanktonQuantity: number of hauls = 9
Description: MOCNESS zooplankton hauls - sampled for experiments or preserved
ZooplanktonQuantity: number of samples = 24
Description: Vertical Bongo net samples - preserved for analysis at SAHFOS
ZooplanktonQuantity: number of samples = 20
Description: Horizontal CPR samples - preserved for analysis at SAHFOS
ZooplanktonQuantity: number of hauls = 9
Description: RMT8 - krill frozen. Further genetic analysis
ZooplanktonQuantity: number of hauls = 9
Description: RMT8 - macrozooplankton. Frozen samples for stable isotope analysis
ZooplanktonQuantity: number of hauls = 9
Description: RMT8 - krill length measurements and photography
ZooplanktonQuantity: number of stations = 17
Description: Bongo nets - Foraminifera
Acoustic reflection on marine organisms.Quantity: activity duration in days = 38
Description: EK60 Multi-frequency scientific echosounder
Meteorology 
Routine standard measurementsQuantity: activity duration in days = 38
Description: Onboard ship meteorological
Geology and geophysics 
Core - soft bottomQuantity: number of cores = 1
Description: Box core - surface sediment samples frozen. Further analysis calcareous plankton
Single-beam echosoundingQuantity: activity duration in days = 35
Description: EA600 Single Beam bathymetry
Moorings, landers, buoys 
Physical oceanography 
CTD stations52° 49' 0" S  40° 7' 0" W — Site: Deployed - P3. Water Depth: 3787m. Instrumentation: Main Buoy (~200 m) - SBE CTD, RDI ADCP, SAMI pH sensor, Oceanus CO2 sensor. Aquadoop current meter (~2000m). Sediment Traps (x2, ~2000m, ~ 600m). Seaguard current meter & O2 sensor (~600m), SBE CTD (~600m), Watersampler (~600m)
CTD stations55° 15' 0" S  41° 15' 0" W — Site: Deployed - P2. Water Depth: 3355m. Instrumentation: Main Buoy (~200 m) - SBE CTD, RDI ADCP, SAMI pH sensor, Oceanus CO2 sensor. Aquadoop current meter (~2000m), Sediment Trap (~2000m), Seaguard current meter & O2 sensor (~550m), Water sampler (~550m)
CTD stations55° 13' 59" S  41° 13' 59" W — Site: Recovered - P2. Water Depth: 3383m. Instrumentation: Aquadoop current meter (1500m), Sediment Trap (1500m), Main Buoy - SBE CTD, RDI ADCP (near surface)
Current meters55° 13' 59" S  41° 13' 59" W — Site: Recovered - P2. Water Depth: 3383m. Instrumentation: Aquadoop current meter (1500m), Sediment Trap (1500m), Main Buoy - SBE CTD, RDI ADCP (near surface)
Current meters52° 49' 0" S  40° 7' 0" W — Site: Deployed - P3. Water Depth: 3787m. Instrumentation: Main Buoy (~200 m) - SBE CTD, RDI ADCP, SAMI pH sensor, Oceanus CO2 sensor. Aquadoop current meter (~2000m). Sediment Traps (x2, ~2000m, ~ 600m). Seaguard current meter & O2 sensor (~600m), SBE CTD (~600m), Watersampler (~600m)
Current meters55° 15' 0" S  41° 15' 0" W — Site: Deployed - P2. Water Depth: 3355m. Instrumentation: Main Buoy (~200 m) - SBE CTD, RDI ADCP, SAMI pH sensor, Oceanus CO2 sensor. Aquadoop current meter (~2000m), Sediment Trap (~2000m), Seaguard current meter & O2 sensor (~550m), Water sampler (~550m)
Current profiler (eg ADCP)55° 13' 59" S  41° 13' 59" W — Site: Recovered - P2. Water Depth: 3383m. Instrumentation: Aquadoop current meter (1500m), Sediment Trap (1500m), Main Buoy - SBE CTD, RDI ADCP (near surface)
Current profiler (eg ADCP)52° 49' 0" S  40° 7' 0" W — Site: Deployed - P3. Water Depth: 3787m. Instrumentation: Main Buoy (~200 m) - SBE CTD, RDI ADCP, SAMI pH sensor, Oceanus CO2 sensor. Aquadoop current meter (~2000m). Sediment Traps (x2, ~2000m, ~ 600m). Seaguard current meter & O2 sensor (~600m), SBE CTD (~600m), Watersampler (~600m)
Current profiler (eg ADCP)55° 15' 0" S  41° 15' 0" W — Site: Deployed - P2. Water Depth: 3355m. Instrumentation: Main Buoy (~200 m) - SBE CTD, RDI ADCP, SAMI pH sensor, Oceanus CO2 sensor. Aquadoop current meter (~2000m), Sediment Trap (~2000m), Seaguard current meter & O2 sensor (~550m), Water sampler (~550m)
Chemical oceanography 
Oxygen52° 49' 0" S  40° 7' 0" W — Site: Deployed - P3. Water Depth: 3787m. Instrumentation: Main Buoy (~200 m) - SBE CTD, RDI ADCP, SAMI pH sensor, Oceanus CO2 sensor. Aquadoop current meter (~2000m). Sediment Traps (x2, ~2000m, ~ 600m). Seaguard current meter & O2 sensor (~600m), SBE CTD (~600m), Watersampler (~600m)
Oxygen55° 15' 0" S  41° 15' 0" W — Site: Deployed - P2. Water Depth: 3355m. Instrumentation: Main Buoy (~200 m) - SBE CTD, RDI ADCP, SAMI pH sensor, Oceanus CO2 sensor. Aquadoop current meter (~2000m), Sediment Trap (~2000m), Seaguard current meter & O2 sensor (~550m), Water sampler (~550m)
Carbon dioxide55° 15' 0" S  41° 15' 0" W — Site: Deployed - P2. Water Depth: 3355m. Instrumentation: Main Buoy (~200 m) - SBE CTD, RDI ADCP, SAMI pH sensor, Oceanus CO2 sensor. Aquadoop current meter (~2000m), Sediment Trap (~2000m), Seaguard current meter & O2 sensor (~550m), Water sampler (~550m)
Carbon dioxide52° 49' 0" S  40° 7' 0" W — Site: Deployed - P3. Water Depth: 3787m. Instrumentation: Main Buoy (~200 m) - SBE CTD, RDI ADCP, SAMI pH sensor, Oceanus CO2 sensor. Aquadoop current meter (~2000m). Sediment Traps (x2, ~2000m, ~ 600m). Seaguard current meter & O2 sensor (~600m), SBE CTD (~600m), Watersampler (~600m)
pH55° 15' 0" S  41° 15' 0" W — Site: Deployed - P2. Water Depth: 3355m. Instrumentation: Main Buoy (~200 m) - SBE CTD, RDI ADCP, SAMI pH sensor, Oceanus CO2 sensor. Aquadoop current meter (~2000m), Sediment Trap (~2000m), Seaguard current meter & O2 sensor (~550m), Water sampler (~550m)
pH52° 49' 0" S  40° 7' 0" W — Site: Deployed - P3. Water Depth: 3787m. Instrumentation: Main Buoy (~200 m) - SBE CTD, RDI ADCP, SAMI pH sensor, Oceanus CO2 sensor. Aquadoop current meter (~2000m). Sediment Traps (x2, ~2000m, ~ 600m). Seaguard current meter & O2 sensor (~600m), SBE CTD (~600m), Watersampler (~600m)
Biology and fisheries 
Sediment traps55° 15' 0" S  41° 15' 0" W — Site: Deployed - P2. Water Depth: 3355m. Instrumentation: Main Buoy (~200 m) - SBE CTD, RDI ADCP, SAMI pH sensor, Oceanus CO2 sensor. Aquadoop current meter (~2000m), Sediment Trap (~2000m), Seaguard current meter & O2 sensor (~550m), Water sampler (~550m)
Sediment traps55° 13' 59" S  41° 13' 59" W — Site: Recovered - P2. Water Depth: 3383m. Instrumentation: Aquadoop current meter (1500m), Sediment Trap (1500m), Main Buoy - SBE CTD, RDI ADCP (near surface)
Sediment traps52° 49' 0" S  40° 7' 0" W — Site: Deployed - P3. Water Depth: 3787m. Instrumentation: Main Buoy (~200 m) - SBE CTD, RDI ADCP, SAMI pH sensor, Oceanus CO2 sensor. Aquadoop current meter (~2000m). Sediment Traps (x2, ~2000m, ~ 600m). Seaguard current meter & O2 sensor (~600m), SBE CTD (~600m), Watersampler (~600m)
Data held at BODC 
Series/Profiles 
25  Bathythermograph (MBT/XBT)
Sound velocity and travel time in the water column
Vertical spatial coordinates
Temperature of the water column
Reference numbers
Sound velocity and travel time in the water column
Vertical spatial coordinates
Temperature of the water column
Reference numbers

BODC idDate/TimeLocationDoc.
18016002014-12-08 09:06 53° 20' 50" S  39° 36' 8" W  View metadata report for BODC series reference number 1801600
18016122014-12-08 10:15 53° 31' 29" S  39° 32' 59" W  View metadata report for BODC series reference number 1801612
18016242014-12-08 11:24 53° 42' 5" S  39° 29' 50" W  View metadata report for BODC series reference number 1801624
18016362014-12-08 12:36 53° 52' 42" S  39° 26' 41" W  View metadata report for BODC series reference number 1801636
18016482014-12-08 13:44 54° 3' 20" S  39° 23' 29" W  View metadata report for BODC series reference number 1801648
18016612014-12-09 09:41 53° 59' 36" S  38° 49' 7" W  View metadata report for BODC series reference number 1801661
18016732014-12-09 10:50 53° 49' 1" S  38° 52' 25" W  View metadata report for BODC series reference number 1801673
18016852014-12-09 12:05 53° 38' 22" S  38° 55' 46" W  View metadata report for BODC series reference number 1801685
18016972014-12-09 14:26 53° 17' 13" S  39° 2' 18" W  View metadata report for BODC series reference number 1801697
18017042014-12-10 09:00 53° 13' 15" S  38° 26' 56" W  View metadata report for BODC series reference number 1801704
18017162014-12-10 09:05 53° 13' 44" S  38° 26' 46" W  View metadata report for BODC series reference number 1801716
18017282014-12-10 10:10 53° 23' 51" S  38° 23' 30" W  View metadata report for BODC series reference number 1801728
18017412014-12-10 11:20 53° 34' 27" S  38° 20' 3" W  View metadata report for BODC series reference number 1801741
18017532014-12-10 12:29 53° 45' 2" S  38° 16' 39" W  View metadata report for BODC series reference number 1801753
18017652014-12-10 13:33 53° 55' 37" S  38° 13' 13" W  View metadata report for BODC series reference number 1801765
18017772014-12-11 09:00 53° 52' 8" S  37° 43' 40" W  View metadata report for BODC series reference number 1801777
18017892014-12-11 10:08 53° 41' 33" S  37° 47' 14" W  View metadata report for BODC series reference number 1801789
18017902014-12-11 11:16 53° 31' 0" S  37° 50' 49" W  View metadata report for BODC series reference number 1801790
18018082014-12-11 12:27 53° 20' 9" S  37° 54' 14" W  View metadata report for BODC series reference number 1801808
18018212014-12-11 13:34 53° 9' 50" S  37° 57' 51" W  View metadata report for BODC series reference number 1801821
18018332014-12-11 14:16 53° 8' 54" S  37° 49' 56" W  View metadata report for BODC series reference number 1801833
18018452014-12-11 15:29 53° 19' 29" S  37° 46' 22" W  View metadata report for BODC series reference number 1801845
18018572014-12-11 16:38 53° 30' 4" S  37° 42' 48" W  View metadata report for BODC series reference number 1801857
18018692014-12-11 17:46 53° 40' 37" S  37° 39' 15" W  View metadata report for BODC series reference number 1801869
18018702014-12-11 18:53 53° 51' 14" S  37° 35' 39" W  View metadata report for BODC series reference number 1801870
19  CTD/STD cast
Density of the water column
Transmittance and attenuance of the water column
Visible waveband radiance and irradiance measurements in 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
Reference numbers
Dissolved oxygen parameters in the water column
Density of the water column
Transmittance and attenuance of the water column
Visible waveband radiance and irradiance measurements in 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
Reference numbers
Dissolved oxygen parameters in the water column

BODC idDate/TimeLocationDoc.
18087882014-11-25 10:21 59° 57' 44" S  46° 9' 34" W  View metadata report for BODC series reference number 1808788
18088072014-11-25 18:12 59° 57' 44" S  46° 9' 34" W  View metadata report for BODC series reference number 1808807
18088192014-11-26 16:55 59° 57' 46" S  46° 9' 36" W  View metadata report for BODC series reference number 1808819
18088202014-11-28 12:20 55° 15' 9" S  41° 18' 7" W  View metadata report for BODC series reference number 1808820
18088322014-11-29 03:04 55° 14' 51" S  41° 15' 58" W  View metadata report for BODC series reference number 1808832
18088442014-11-29 17:42 55° 14' 51" S  41° 15' 54" W  View metadata report for BODC series reference number 1808844
18088562014-12-01 20:26 54° 9' 31" S  36° 41' 13" W  View metadata report for BODC series reference number 1808856
18088682014-12-03 18:25 54° 15' 59" S  36° 25' 59" W  View metadata report for BODC series reference number 1808868
18088812014-12-09 00:17 53° 29' 34" S  39° 15' 14" W  View metadata report for BODC series reference number 1808881
18088932014-12-09 07:48 53° 50' 51" S  39° 8' 35" W  View metadata report for BODC series reference number 1808893
18089002014-12-09 22:07 53° 47' 5" S  38° 34' 59" W  View metadata report for BODC series reference number 1808900
18089122014-12-10 05:55 53° 25' 55" S  38° 41' 42" W  View metadata report for BODC series reference number 1808912
18089242014-12-10 22:38 53° 21' 40" S  38° 4' 58" W  View metadata report for BODC series reference number 1808924
18089362014-12-11 06:20 53° 42' 50" S  37° 57' 57" W  View metadata report for BODC series reference number 1808936
18089482014-12-12 22:40 52° 48' 41" S  39° 58' 21" W  View metadata report for BODC series reference number 1808948
18089612014-12-13 14:12 52° 45' 43" S  40° 18' 13" W  View metadata report for BODC series reference number 1808961
18089732014-12-13 22:22 52° 48' 42" S  39° 58' 21" W  View metadata report for BODC series reference number 1808973
18089852014-12-14 07:44 52° 36' 0" S  39° 12' 0" W  View metadata report for BODC series reference number 1808985
18089972014-12-14 14:06 52° 36' 1" S  39° 11' 58" W  View metadata report for BODC series reference number 1808997
Discrete samples 
10  CTD frame plus rosette samplerChlorophyll pigment concentrations in water bodies
111  Sample taken from ship's non-toxic supplyChlorophyll pigment concentrations in water bodies