Cruise inventory

RRS James Clark Ross JR20081212 (JR194, JR197)

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS James Clark Ross (74JC)
Cruise identifierJR20081212 (JR194, JR197)
Cruise period2008-12-12 — 2008-12-20
StatusCompleted
Port of departureStanley, Falkland Islands (Malvinas)
Port of returnUnknown, Antarctica
PurposeResearch
ObjectivesJR194 was a short CTD section across Drake Passage, making the 14th repeat along WOCE section SR1b. This was also an opportunity to make quantitative microplankton measurements (flow cytometry) extending the line of such measurements from AMT (Atlantic Meridional Transect) from the Falklands south to the Antarctic Peninsula.

The aim of JR197 was to take sea level measurements from Drake Passage. Bottom Pressure Recorders have been used for making measurements of the Antarctic Circumpolar Current (ACC) since 1988, initially in the Scotia Sea and then later across the Drake Passage between the Falkland Islands and the Antarctic peninsula. Some of the Bottom Pressure Recorders (BPRs) are combined with Inverted Echo Sounders (IES). During JR197, one BPR and one BPR/IES were recovered and re-deployed in the Drake Passage. An additional BPR was deployed and a data pod was also recovered from MYRTLE (Multi-Year Return Tidal Level Equipment). The Sea Level Recorders at Stanley, Falkland Islands, Vernadsky and Rothera Research Stations in Antarctica, were also serviced.
Chief scientistGraham D Quartly (National Oceanography Centre, Southampton), Miguel Angel Morales Maqueda (Proudman Oceanographic Laboratory)
ProjectOceans 2025
Coordinating bodyNERC
Cruise reportRRS James Clark Ross JR20081212 (JR194, JR197) cruise report jr194.pdf — access key 'C' (1.69 MB)  RRS James Clark Ross JR20081212 (JR194, JR197) cruise report jr197.pdf (0.20 MB) 
Ocean/sea areas 
GeneralSouth West Atlantic Ocean (limit 20W)
SpecificDrake Passage
Track chartsRRS James Clark Ross JR20081212 (JR194, JR197) cruise track — jr194trk.pdf (00 MB) 
Measurements 
Physical oceanography 
Surface measurements underway (T,S)Quantity: activity duration in days = 9
Description: Ocean logger, with thermosalinograph (temperature & salinity), fluorometer & transmissometer
Water bottle stationsQuantity: number of stations = 32
Description: Salinity samples (typically 12) taken on all stations
CTD stationsQuantity: number of stations = 32
Description: 2 test stations near Falklands; 30 for transect along SR1b. Temperature (x2), Salinity (x2), Fluorescence, PAR, Oxygen, Transmittance
Current profiler (eg ADCP)Quantity: number of stations = 32
Description: LADCP working on most CTD stations
Current profiler (eg ADCP)Quantity: activity duration in days = 9
Description: Continuous VM ADCP (75 kHz, typically reaching down 800m)
Neutrally buoyant floatsQuantity: number of deployments = 7
Description: ARGO floats deployed on Drake Passage leg
Biology and fisheries 
Biochemical measurements (eg lipids, amino acids)Quantity: number of stations = 4
Description: Bacterial activity and microbial uptake at ambient concentrations
PhytoplanktonQuantity: number of stations = 32
Description: Flow cytometry analysis (bacterioplankton and micro phytoplankton) of CTD Niskin samples (surface to sea-bed)
PhytoplanktonQuantity: activity duration in days = 9
Description: Flow cytometry analysis (bacterioplankton and micro phytoplankton) of surface (6m depth) samples taken every 30 mins
ZooplanktonQuantity: number of stations = 5
Description: Sea trials of size-fractionated microplankton net
Meteorology 
Routine standard measurementsQuantity: activity duration in days = 9
Description: Met system (air temperature, wind speed & direction, relative humidity, PAR & TIR)
Geology and geophysics 
Single-beam echosoundingQuantity: activity duration in days = 9
Description: Echo sounder (EA600) record of bottom
Moorings, landers, buoys 
Physical oceanography 
Sea level (inc. bot. press., inverted echosounder)54° 56' 35" S  58° 21' 24" W — Bottom Pressure Recorder deployed Dec 2006, recovered Dec 2008. Drake North.
Sea level (inc. bot. press., inverted echosounder)60° 37' 11" S  53° 50' 55" W — Bottom Pressure Recorder deployed Dec 2005. Recovered data pod Dec 2008. Main instrument still deployed. MYRTLE
Sea level (inc. bot. press., inverted echosounder)57° 53' 49" S  56° 32' 40" W — Bottom Pressure Recorder deployed Dec 2008. Drake Middle.
Sea level (inc. bot. press., inverted echosounder)60° 51' 0" S  54° 42' 41" W — Bottom Pressure Recorder and Inverted Echo Sounder deployed Dec 2006, recovered Dec 2008. Drake South.
Sea level (inc. bot. press., inverted echosounder)60° 51' 1" S  54° 42' 47" W — Bottom Pressure Recorder and Inverted Echo Sounder deployed Dec 2008. Drake South.
Sea level (inc. bot. press., inverted echosounder)54° 56' 35" S  58° 21' 18" W — Bottom Pressure Recorder deployed Dec 2008. Drake North.
Data held at BODC 
Series/Profiles 
32  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.
10773202008-12-12 20:30:06  — 2008-12-12 20:34:27 51° 46' 17" S  57° 34' 55" W  View metadata report for BODC series reference number 1077320
10773322008-12-13 06:32:52  — 2008-12-13 07:13:46 53° 30' 23" S  58° 10' 53" W  View metadata report for BODC series reference number 1077332
10773442008-12-13 15:10:46  — 2008-12-13 15:20 54° 39' 58" S  58° 32' 36" W  View metadata report for BODC series reference number 1077344
10773562008-12-13 20:03:20  — 2008-12-13 20:14:23 54° 55' 20" S  58° 23' 4" W  View metadata report for BODC series reference number 1077356
10773682008-12-13 21:17:32  — 2008-12-13 21:40:20 54° 56' 37" S  58° 22' 17" W  View metadata report for BODC series reference number 1077368
10773812008-12-13 23:00:57  — 2008-12-13 23:31:54 54° 57' 39" S  58° 21' 38" W  View metadata report for BODC series reference number 1077381
10773932008-12-14 01:41:35  — 2008-12-14 02:18:32 55° 4' 10" S  58° 17' 36" W  View metadata report for BODC series reference number 1077393
10774002008-12-14 04:29:42  — 2008-12-14 05:13:31 55° 7' 15" S  58° 15' 43" W  View metadata report for BODC series reference number 1077400
10774122008-12-14 07:17  — 2008-12-14 08:08:29 55° 10' 15" S  58° 13' 51" W  View metadata report for BODC series reference number 1077412
10774242008-12-14 10:05:21  — 2008-12-14 11:14:14 55° 12' 50" S  58° 12' 14" W  View metadata report for BODC series reference number 1077424
10774362008-12-14 15:18:53  — 2008-12-14 16:33:40 55° 31' 3" S  58° 0' 56" W  View metadata report for BODC series reference number 1077436
10774482008-12-14 20:54:42  — 2008-12-14 22:20:17 55° 49' 55" S  57° 48' 17" W  View metadata report for BODC series reference number 1077448
10774612008-12-15 02:56:28  — 2008-12-15 03:55:47 56° 8' 47" S  57° 37' 32" W  View metadata report for BODC series reference number 1077461
10774732008-12-15 07:52:24  — 2008-12-15 08:58:41 56° 28' 0" S  57° 25' 40" W  View metadata report for BODC series reference number 1077473
10774852008-12-15 13:00:16  — 2008-12-15 13:59:26 56° 46' 6" S  57° 13' 13" W  View metadata report for BODC series reference number 1077485
10774972008-12-15 18:14:29  — 2008-12-15 19:26:53 57° 4' 27" S  57° 0' 2" W  View metadata report for BODC series reference number 1077497
10775042008-12-15 23:38:54  — 2008-12-16 00:37:13 57° 24' 16" S  56° 49' 22" W  View metadata report for BODC series reference number 1077504
10775162008-12-16 04:23:16  — 2008-12-16 05:21:45 57° 43' 39" S  56° 37' 58" W  View metadata report for BODC series reference number 1077516
10775282008-12-16 10:47:28  — 2008-12-16 11:54:31 58° 2' 59" S  56° 26' 54" W  View metadata report for BODC series reference number 1077528
10775412008-12-16 15:42:16  — 2008-12-16 16:48:16 58° 22' 4" S  56° 14' 49" W  View metadata report for BODC series reference number 1077541
10775532008-12-16 20:30:06  — 2008-12-16 21:34:49 58° 40' 36" S  56° 3' 27" W  View metadata report for BODC series reference number 1077553
10775652008-12-17 01:31:03  — 2008-12-17 02:35:45 58° 59' 57" S  55° 50' 54" W  View metadata report for BODC series reference number 1077565
10775772008-12-17 06:20:36  — 2008-12-17 07:24:10 59° 19' 50" S  55° 39' 10" W  View metadata report for BODC series reference number 1077577
10775892008-12-17 10:59:57  — 2008-12-17 12:03:27 59° 39' 36" S  55° 25' 42" W  View metadata report for BODC series reference number 1077589
10775902008-12-17 15:48:06  — 2008-12-17 16:48:19 59° 59' 48" S  55° 14' 46" W  View metadata report for BODC series reference number 1077590
10776082008-12-17 20:24:14  — 2008-12-17 21:23:09 60° 19' 59" S  55° 1' 53" W  View metadata report for BODC series reference number 1077608
10776212008-12-18 00:51:25  — 2008-12-18 01:45:09 60° 40' 27" S  54° 49' 15" W  View metadata report for BODC series reference number 1077621
10776332008-12-18 12:00:53  — 2008-12-18 12:45:20 60° 48' 10" S  54° 43' 48" W  View metadata report for BODC series reference number 1077633
10776452008-12-18 14:26:38  — 2008-12-18 15:00:01 60° 49' 59" S  54° 42' 17" W  View metadata report for BODC series reference number 1077645
10776572008-12-18 16:19:29  — 2008-12-18 16:37:42 60° 50' 53" S  54° 42' 22" W  View metadata report for BODC series reference number 1077657
10776692008-12-18 20:15  — 2008-12-18 20:26:47 60° 58' 54" S  54° 37' 54" W  View metadata report for BODC series reference number 1077669
10776702008-12-18 21:39:28  — 2008-12-18 21:47:26 61° 2' 59" S  54° 35' 13" W  View metadata report for BODC series reference number 1077670
Discrete samples 
32  CTD frame plus rosette samplerSalinity of the water column
35  Sample taken from ship's non-toxic supplySalinity of the water column