Cruise inventory

RRS James Clark Ross JR20150110 (JR305, JR306)

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS James Clark Ross (74JC)
Cruise identifierJR20150110 (JR305, JR306)
Cruise period2015-01-10 — 2015-01-22
StatusCompleted
Port of departureRothera, Antarctica
Port of returnPunta Arenas, Chile
PurposeResearch
ObjectivesTwentieth complete occupation of the Drake Passage section, established during the World Ocean Circulation Experiment as repeat section SR1b, first occupied in 1993 and re-occupied most years since then. Full-depth temperature, salinity, and lowered ADCP velocity profiles were measured at the 30 repeat stations (with the 9 northern stations along 58 W, as from 2009 on). Underway measurements included navigation, VM-ADCP, sea surface temperature and salinity, water depth, and meteorological variables. The objectives were to investigate interannual variability in Antarctic Circumpolar Current (ACC) structure and transport, the positions of the ACC fronts, and Drake Passage temperature and salinity distributions.
Chief scientistBrian A King (National Oceanography Centre, Southampton), Miguel Angel Morales Maqueda (National Oceanography Centre, Liverpool)
Coordinating bodyNatural Environment Research Council (NERC)
Cruise reportRRS James Clark Ross JR20150110 (JR305, JR306) cruise report jr306.pdf — access key 'C' (1.20 MB) 
Ocean/sea areas 
GeneralSouth West Atlantic Ocean (limit 20W)
Southern Ocean
SpecificDrake Passage
Track chartsRRS James Clark Ross JR20150110 (JR305, JR306) cruise track — jr306trk.pdf (00 MB) 
Measurements 
Physical oceanography 
Surface measurements underway (T,S)Quantity: number of samples = 40
Description: Discrete water samples collected from non-toxic supply to calibrate underway salinity sensor. Analysed using an autosalinometer standardized with a sea water standard.
Surface measurements underway (T,S)Quantity: activity duration in days = 8
Description: Underway pumped seawater physical parameters. Parameters: salinity, temperature, beam transmission, fluorescence
Water bottle stationsQuantity: number of stations = 30
Description: Discrete water samples collected from CTD bottles to calibrate CTD conductivity sensor. Analysed using an autosalinometer standardized with a sea water standard.
CTD stationsQuantity: number of stations = 30
Description: SeaBird 9/11. 30 CTD casts total. Parameters: temperature, salinity, pressure, oxygen, fluorescence, beam transmission, PAR. altimeter, water velocities from lowered ADCP
Current profiler (eg ADCP)Quantity: activity duration in days = 8
Description: 75kHz vessel-mounted ADCP surveys
Current profiler (eg ADCP)Quantity: number of stations = 30
Description: SeaBird 9/11. 30 CTD casts total. Parameters: temperature, salinity, pressure, oxygen, fluorescence, beam transmission, PAR. altimeter, water velocities from lowered ADCP
Meteorology 
Routine standard measurementsQuantity: activity duration in days = 8
Description: Underway Meteorology. Parameters: air temperature, air humidity, wind speed, wind direction, atmospheric pressure, TIR, PAR
Geology and geophysics 
Single-beam echosoundingQuantity: activity duration in days = 8
Description: Routine EM122 and EA600 echo sounding
Multi-beam echosoundingQuantity: activity duration in days = 8
Description: Routine EM122 and EA600 echo sounding
Data held at BODC 
Series/Profiles 
1  Acoustic doppler current profiler
Horizontal platform movement
Vertical spatial coordinates
Horizontal velocity of the water column (currents)
Horizontal spatial co-ordinates
Reference numbers
Date and time
Horizontal platform movement
Vertical spatial coordinates
Horizontal velocity of the water column (currents)
Horizontal spatial co-ordinates
Reference numbers
Date and time

BODC idDate/TimeLocationDoc.
16190282015-01-10 12:30:14  — 2015-01-18 06:44:35 67° 38' 16" S  68° 3' 14" W — 54° 44' 48" S  58° 0' 22" W  View metadata report for BODC series reference number 1619028
30  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.
16164362015-01-13 07:22:51  — 2015-01-13 07:30:52 61° 3' 2" S  54° 35' 22" W  View metadata report for BODC series reference number 1616436
16164482015-01-13 08:30:47  — 2015-01-13 08:43:12 60° 58' 51" S  54° 37' 46" W  View metadata report for BODC series reference number 1616448
16164612015-01-13 10:04:30  — 2015-01-13 10:22:56 60° 51' 0" S  54° 42' 31" W  View metadata report for BODC series reference number 1616461
16164732015-01-13 14:04:24  — 2015-01-13 14:34:51 60° 49' 59" S  54° 43' 16" W  View metadata report for BODC series reference number 1616473
16164852015-01-13 15:49:41  — 2015-01-13 16:32:13 60° 48' 1" S  54° 44' 31" W  View metadata report for BODC series reference number 1616485
16164972015-01-13 18:31:28  — 2015-01-13 19:24:14 60° 40' 2" S  54° 49' 32" W  View metadata report for BODC series reference number 1616497
16165042015-01-13 22:42:32  — 2015-01-13 23:41:03 60° 19' 55" S  55° 1' 2" W  View metadata report for BODC series reference number 1616504
16165162015-01-14 03:13:51  — 2015-01-14 04:13:54 60° 0' 2" S  55° 13' 57" W  View metadata report for BODC series reference number 1616516
16165282015-01-14 07:39:17  — 2015-01-14 08:41:48 59° 39' 58" S  55° 26' 36" W  View metadata report for BODC series reference number 1616528
16165412015-01-14 12:20:15  — 2015-01-14 13:24:23 59° 19' 56" S  55° 39' 2" W  View metadata report for BODC series reference number 1616541
16165532015-01-14 17:00:31  — 2015-01-14 18:05:29 59° 0' 4" S  55° 50' 58" W  View metadata report for BODC series reference number 1616553
16165652015-01-14 21:38:26  — 2015-01-14 22:40:48 58° 40' 59" S  56° 3' 14" W  View metadata report for BODC series reference number 1616565
16165772015-01-15 02:23:28  — 2015-01-15 03:30:55 58° 21' 54" S  56° 14' 52" W  View metadata report for BODC series reference number 1616577
16165892015-01-15 07:26:36  — 2015-01-15 08:33:36 58° 2' 59" S  56° 26' 49" W  View metadata report for BODC series reference number 1616589
16165902015-01-15 12:25:33  — 2015-01-15 13:25:22 57° 43' 59" S  56° 37' 40" W  View metadata report for BODC series reference number 1616590
16166082015-01-15 16:58:20  — 2015-01-15 17:59:52 57° 25' 4" S  56° 49' 8" W  View metadata report for BODC series reference number 1616608
16166212015-01-15 21:39:02  — 2015-01-15 22:44:14 57° 5' 57" S  57° 1' 18" W  View metadata report for BODC series reference number 1616621
16166332015-01-16 02:16:40  — 2015-01-16 03:10:03 56° 46' 55" S  57° 13' 58" W  View metadata report for BODC series reference number 1616633
16166452015-01-16 06:25:21  — 2015-01-16 07:31:34 56° 28' 6" S  57° 25' 37" W  View metadata report for BODC series reference number 1616645
16166572015-01-16 17:24:32  — 2015-01-16 18:23:18 56° 10' 7" S  57° 35' 37" W  View metadata report for BODC series reference number 1616657
16166692015-01-16 21:56:50  — 2015-01-16 23:18:06 55° 49' 53" S  57° 48' 6" W  View metadata report for BODC series reference number 1616669
16166702015-01-17 03:22:53  — 2015-01-17 04:37:10 55° 31' 2" S  58° 0' 6" W  View metadata report for BODC series reference number 1616670
16166822015-01-17 08:12:45  — 2015-01-17 09:19:29 55° 12' 46" S  58° 0' 0" W  View metadata report for BODC series reference number 1616682
16166942015-01-17 11:39:57  — 2015-01-17 12:32:26 55° 10' 11" S  57° 59' 59" W  View metadata report for BODC series reference number 1616694
16167012015-01-17 19:43:13  — 2015-01-17 20:29:51 55° 7' 13" S  58° 0' 1" W  View metadata report for BODC series reference number 1616701
16167132015-01-17 22:09:32  — 2015-01-17 22:48:16 55° 4' 12" S  58° 0' 0" W  View metadata report for BODC series reference number 1616713
16167252015-01-18 00:33  — 2015-01-18 01:02:21 55° 0' 24" S  57° 59' 50" W  View metadata report for BODC series reference number 1616725
16167372015-01-18 02:15:10  — 2015-01-18 02:32:49 54° 58' 39" S  58° 0' 13" W  View metadata report for BODC series reference number 1616737
16167492015-01-18 03:58:47  — 2015-01-18 04:09:39 54° 54' 14" S  57° 59' 35" W  View metadata report for BODC series reference number 1616749
16167502015-01-18 06:02:57  — 2015-01-18 06:08:01 54° 44' 14" S  57° 59' 34" W  View metadata report for BODC series reference number 1616750