Cruise inventory

RRS James Clark Ross JR20071129 (JR171, JR193, JR196 Leg1, JR212)

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS James Clark Ross (74JC)
Cruise identifierJR20071129 (JR171, JR193, JR196 Leg1, JR212)
Cruise period2007-11-29 — 2007-12-09
StatusCompleted
Port of departureStanley, Falkland Islands (Malvinas)
Port of returnRothera, Antarctica
PurposeResearch
ObjectivesDeployment of two POL Bottom Pressure Recorders (BPR's) took place in the Drake Passage at Drake North (Burdwood Bank) and Drake South (Elephant Island). The two existing BPR's deployed in 2006 in the same location will remain on the seabed for a further year providing an overlap in the data between the two instruments. This cruise was part of the British Antarctic Survey re-supply mission to a number of BAS Antarctic Bases. A team from the National Oceanography Centre was onboard and carried out their science while crossing the Drake Passage.

JR193 was a section across Drake Passage, the 13th repeat of WOCE section SR1b; JR171 was a repeat survey of the flow across the Marguerite Trough to the southwest of Rothera. Graham Quartly (NOC) was responsible for JR193 and Hugh Venables (BAS) for JR171. JR212 was a deployment of a SAMS drifter buoy, deployed by the ship's crew. No SAMS personnel were on board. JR196 was the first leg of an ACCLAIM cruise to study variations in the flow of the Antarctic Circumpolar Current (ACC) on large time and space scales. The second leg followed on the next cruise.
Chief scientistGraham D Quartly (National Oceanography Centre, Southampton), Hugh Venables (British Antarctic Survey), Miguel Angel Morales Maqueda (Proudman Oceanographic Laboratory)
ProjectOceans 2025
Coordinating bodyNERC
Cruise reportRRS James Clark Ross JR20071129 (JR171, JR193, JR196 Leg1, JR212) cruise report jr193.pdf — access key 'C' (2.71 MB)  RRS James Clark Ross JR20071129 (JR171, JR193, JR196 Leg1, JR212) cruise report jr196.pdf (0.21 MB) 
Ocean/sea areas 
GeneralSouth West Atlantic Ocean (limit 20W)
Southern Ocean
SpecificDrake Passage (western South Atlantic). West Antarctic Peninsula Marguerite Bay
Track chartsRRS James Clark Ross JR20071129 (JR171, JR193, JR196 Leg1, JR212) cruise track — jr193trk.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 = 41
Description: Salinity samples (typically 12) taken on all stations (bar 1st test)
CTD stationsQuantity: number of stations = 42
Description: 2 test stations near Falklands; 30 for transect of SR1b ; 9 for Marguerite Trough ; 1 outside Rothera. Temperature (x2), Salinity (x2), Fluorescence, PAR, Oxygen
Current profiler (eg ADCP)Quantity: number of stations = 39
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)
Surface drifters/drifting buoysQuantity: number of deployments = 1
Description: SAMS surface drifter
Neutrally buoyant floatsQuantity: number of deployments = 6
Description: ARGO floats deployed on Drake Passage leg
Chemical oceanography 
OxygenQuantity: number of stations = 1
Description: Station outside Rothera was sampled for 18O
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° 55' 59" S  58° 21' 59" W — one sensor, sea level. Depth 1172m, deployment
Sea level (inc. bot. press., inverted echosounder)60° 51' 0" S  54° 42' 0" W — one sensor, sealevel, depth 989m, deployment
Data held at BODC 
Series/Profiles 
32  CTD/STD cast
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
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.
9451822007-11-29 21:02:03  — 2007-11-29 21:06:57 51° 48' 36" S  57° 41' 38" W  View metadata report for BODC series reference number 945182
9451942007-11-30 06:07:59  — 2007-11-30 06:48:13 53° 30' 23" S  58° 10' 59" W  View metadata report for BODC series reference number 945194
9452012007-11-30 14:07:10  — 2007-11-30 14:16:30 54° 39' 59" S  58° 32' 36" W  View metadata report for BODC series reference number 945201
9452132007-11-30 16:35:01  — 2007-11-30 16:46:47 54° 55' 20" S  58° 23' 6" W  View metadata report for BODC series reference number 945213
9452252007-11-30 17:49:13  — 2007-11-30 18:11:33 54° 56' 36" S  58° 22' 18" W  View metadata report for BODC series reference number 945225
9452372007-11-30 20:36:35  — 2007-11-30 21:05:30 54° 57' 39" S  58° 21' 40" W  View metadata report for BODC series reference number 945237
9452492007-11-30 22:49:50  — 2007-11-30 23:26:15 55° 4' 12" S  58° 17' 38" W  View metadata report for BODC series reference number 945249
9452502007-12-01 01:46:35  — 2007-12-01 02:30:08 55° 7' 15" S  58° 15' 42" W  View metadata report for BODC series reference number 945250
9452622007-12-01 04:27:22  — 2007-12-01 05:19:41 55° 10' 14" S  58° 13' 51" W  View metadata report for BODC series reference number 945262
9452742007-12-01 07:12:07  — 2007-12-01 08:17:45 55° 12' 51" S  58° 12' 14" W  View metadata report for BODC series reference number 945274
9452862007-12-01 11:48:18  — 2007-12-01 13:03:28 55° 31' 0" S  58° 0' 51" W  View metadata report for BODC series reference number 945286
9452982007-12-01 16:42:34  — 2007-12-01 18:03:28 55° 50' 16" S  57° 48' 9" W  View metadata report for BODC series reference number 945298
9453052007-12-01 21:39:16  — 2007-12-01 22:40:10 56° 9' 0" S  57° 37' 22" W  View metadata report for BODC series reference number 945305
9453172007-12-02 02:05:23  — 2007-12-02 03:11:34 56° 27' 59" S  57° 25' 39" W  View metadata report for BODC series reference number 945317
9453292007-12-02 06:52:40  — 2007-12-02 07:48:08 56° 47' 19" S  57° 13' 19" W  View metadata report for BODC series reference number 945329
9453302007-12-02 11:09:24  — 2007-12-02 12:16:58 57° 6' 14" S  57° 1' 37" W  View metadata report for BODC series reference number 945330
9453422007-12-02 15:50:16  — 2007-12-02 16:57:25 57° 25' 36" S  56° 49' 39" W  View metadata report for BODC series reference number 945342
9453542007-12-02 20:24:17  — 2007-12-02 21:24:14 57° 43' 58" S  56° 38' 27" W  View metadata report for BODC series reference number 945354
9453662007-12-03 01:06:11  — 2007-12-03 02:13:53 58° 2' 54" S  56° 27' 10" W  View metadata report for BODC series reference number 945366
9453782007-12-03 06:12  — 2007-12-03 07:18:09 58° 21' 33" S  56° 14' 29" W  View metadata report for BODC series reference number 945378
9453912007-12-03 11:02:18  — 2007-12-03 12:07:39 58° 40' 59" S  56° 3' 14" W  View metadata report for BODC series reference number 945391
9454092007-12-03 15:26:10  — 2007-12-03 16:31:54 59° 0' 0" S  55° 51' 27" W  View metadata report for BODC series reference number 945409
9454102007-12-03 20:00:16  — 2007-12-03 21:04:16 59° 20' 0" S  55° 38' 58" W  View metadata report for BODC series reference number 945410
9454222007-12-04 00:22:05  — 2007-12-04 01:24:56 59° 39' 59" S  55° 26' 39" W  View metadata report for BODC series reference number 945422
9454342007-12-04 05:07:55  — 2007-12-04 06:08:23 59° 59' 40" S  55° 14' 21" W  View metadata report for BODC series reference number 945434
9454462007-12-04 09:50:13  — 2007-12-04 10:47:27 60° 19' 29" S  55° 0' 53" W  View metadata report for BODC series reference number 945446
9454582007-12-04 14:21:38  — 2007-12-04 15:15:41 60° 40' 0" S  54° 49' 31" W  View metadata report for BODC series reference number 945458
9454712007-12-04 17:22:05  — 2007-12-04 18:06:38 60° 47' 58" S  54° 44' 33" W  View metadata report for BODC series reference number 945471
9454832007-12-04 19:31:22  — 2007-12-04 20:03:06 60° 49' 58" S  54° 43' 15" W  View metadata report for BODC series reference number 945483
9454952007-12-04 21:10:23  — 2007-12-04 21:30:24 60° 51' 0" S  54° 42' 39" W  View metadata report for BODC series reference number 945495
9455022007-12-04 23:29:40  — 2007-12-04 23:41:15 60° 58' 52" S  54° 37' 51" W  View metadata report for BODC series reference number 945502
9455142007-12-05 00:42:26  — 2007-12-05 00:49:41 61° 2' 59" S  54° 35' 15" W  View metadata report for BODC series reference number 945514
Discrete samples 
25  CTD frame plus rosette samplerSalinity of the water column