RRS James Clark Ross JR20150110 (JR305, JR306)

Cruise summary report

Search the Cruise Inventory

Cruise Info.

Ship name (ship code)

RRS James Clark Ross (74JC)

Cruise identifier

JR20150110 (JR305, JR306)

Cruise period

2015-01-10 — 2015-01-22

Status

Completed

Port of departure

Rothera, Antarctica

Port of return

Punta Arenas, Chile

Purpose

Research

Objectives

Twentieth 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 scientist

Brian A King (National Oceanography Centre, Southampton), Miguel Angel Morales Maqueda (National Oceanography Centre, Liverpool)

Coordinating body

Natural Environment Research Council (NERC)

Cruise report

(1.20 MB)

Ocean/sea areas

General

South West Atlantic Ocean (limit 20W)
Southern Ocean

Specific

Drake Passage

Track charts

(0.43 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 stations

Quantity: 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 stations

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

Current profiler (eg ADCP)

Quantity: activity duration in days = 8
Description: 75kHz vessel-mounted ADCP surveys

Current profiler (eg ADCP)

Meteorology

Routine standard measurements

Quantity: 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 echosounding

Quantity: activity duration in days = 8
Description: Routine EM122 and EA600 echo sounding

Multi-beam echosounding

Quantity: activity duration in days = 8
Description: Routine EM122 and EA600 echo sounding

Data held at BODC

Get data

Series/Profiles

1 Acoustic doppler current profiler

Reference numbers
Horizontal spatial co-ordinates
Date and time
Vertical spatial coordinates
Horizontal platform movement
Horizontal velocity of the water column (currents)

[Show series]

Reference numbers
Horizontal spatial co-ordinates
Date and time
Vertical spatial coordinates
Horizontal platform movement
Horizontal velocity of the water column (currents)

[Hide series]

BODC id	Date/Time	Location	Doc.
1619028	2015-01-10 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

30 CTD/STD cast

Reference numbers
Transmittance and attenuance of the water column
Vertical spatial coordinates
Dissolved oxygen parameters in the water column
Salinity of the water column
Temperature of the water column
Visible waveband radiance and irradiance measurements in the water column
Density of the water column
Electrical conductivity of the water column
Chlorophyll pigment concentrations in water bodies

[Show series]

[Hide series]

BODC id	Date/Time	Location
1616516	2015-01-14 03:13:51 — 2015-01-14 04:13:54	60° 0' 2" S 55° 13' 57" W
1616657	2015-01-16 17:24:32 — 2015-01-16 18:23:18	56° 10' 7" S 57° 35' 37" W
1616670	2015-01-17 03:22:53 — 2015-01-17 04:37:10	55° 31' 2" S 58° 0' 6" W
1616749	2015-01-18 03:58:47 — 2015-01-18 04:09:39	54° 54' 14" S 57° 59' 35" W
1616448	2015-01-13 08:30:47 — 2015-01-13 08:43:12	60° 58' 51" S 54° 37' 46" W
1616461	2015-01-13 10:04:30 — 2015-01-13 10:22:56	60° 51' 0" S 54° 42' 31" W
1616645	2015-01-16 06:25:21 — 2015-01-16 07:31:34	56° 28' 6" S 57° 25' 37" W
1616694	2015-01-17 11:39:57 — 2015-01-17 12:32:26	55° 10' 11" S 57° 59' 59" W
1616713	2015-01-17 22:09:32 — 2015-01-17 22:48:16	55° 4' 12" S 58° 0' 0" W
1616725	2015-01-18 00:33 — 2015-01-18 01:02:21	55° 0' 24" S 57° 59' 50" W
1616737	2015-01-18 02:15:10 — 2015-01-18 02:32:49	54° 58' 39" S 58° 0' 13" W
1616436	2015-01-13 07:22:51 — 2015-01-13 07:30:52	61° 3' 2" S 54° 35' 22" W
1616528	2015-01-14 07:39:17 — 2015-01-14 08:41:48	59° 39' 58" S 55° 26' 36" W
1616541	2015-01-14 12:20:15 — 2015-01-14 13:24:23	59° 19' 56" S 55° 39' 2" W
1616608	2015-01-15 16:58:20 — 2015-01-15 17:59:52	57° 25' 4" S 56° 49' 8" W
1616750	2015-01-18 06:02:57 — 2015-01-18 06:08:01	54° 44' 14" S 57° 59' 34" W
1616553	2015-01-14 17:00:31 — 2015-01-14 18:05:29	59° 0' 4" S 55° 50' 58" W
1616633	2015-01-16 02:16:40 — 2015-01-16 03:10:03	56° 46' 55" S 57° 13' 58" W
1616485	2015-01-13 15:49:41 — 2015-01-13 16:32:13	60° 48' 1" S 54° 44' 31" W
1616497	2015-01-13 18:31:28 — 2015-01-13 19:24:14	60° 40' 2" S 54° 49' 32" W
1616504	2015-01-13 22:42:32 — 2015-01-13 23:41:03	60° 19' 55" S 55° 1' 2" W
1616590	2015-01-15 12:25:33 — 2015-01-15 13:25:22	57° 43' 59" S 56° 37' 40" W
1616473	2015-01-13 14:04:24 — 2015-01-13 14:34:51	60° 49' 59" S 54° 43' 16" W
1616577	2015-01-15 02:23:28 — 2015-01-15 03:30:55	58° 21' 54" S 56° 14' 52" W
1616682	2015-01-17 08:12:45 — 2015-01-17 09:19:29	55° 12' 46" S 58° 0' 0" W
1616589	2015-01-15 07:26:36 — 2015-01-15 08:33:36	58° 2' 59" S 56° 26' 49" W
1616565	2015-01-14 21:38:26 — 2015-01-14 22:40:48	58° 40' 59" S 56° 3' 14" W
1616621	2015-01-15 21:39:02 — 2015-01-15 22:44:14	57° 5' 57" S 57° 1' 18" W
1616669	2015-01-16 21:56:50 — 2015-01-16 23:18:06	55° 49' 53" S 57° 48' 6" W
1616701	2015-01-17 19:43:13 — 2015-01-17 20:29:51	55° 7' 13" S 58° 0' 1" W

Discrete samples

30 CTD frame plus rosette sampler

Resources

RRS James Clark Ross JR20150110 (JR305, JR306)

Cruise summary report

Quick links

BODC holdings

EDMED