RRS James Cook JC068 (GA10)

Cruise summary report

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Cruise Info.

Ship name (ship code)

RRS James Cook (740H)

Cruise identifier

JC068 (GA10)

Cruise period

2011-12-24 — 2012-01-27

Status

Completed

Port of departure

Port Elizabeth, South Africa

Port of return

Montevideo, Uruguay

Purpose

Research

Objectives

The cruise forms part of the international GEOTRACES Programme and focused on the marine chemistry of trace elements and isotopes. It was funded by two NERC proposals, and included scientists from eleven institutes. The cruise was a rescheduled attempt to complete a zonal section across the South Atlantic following the RRS Discovery cruise D357 which was prevented from completing this objective by a medical emergency. JC068 left Port Elizabeth in South Africa on 24th December 2011, called for fuel in Cape Town on 27th December, and then proceeded broadly westward along 40oS to dock in Montevideo on 27th Janury 2012.

Chief scientist

Gideon Henderson (University of Oxford Department of Earth Sciences)

Project

GEOTRACES

Cruise report

(19.83 MB)

Ocean/sea areas

General

South Atlantic Ocean

Track charts

(1.32 MB)

Measurements

Physical oceanography

Water bottle stations

Quantity: number of profiles = 26
Description: CTD casts - 24 bottle carousel

CTD stations

Quantity: number of profiles = 26
Description: Seabird 911 plus Profiling titanium CTD; temperaturex2, conductivityx2, pressure, dissolved oxygen, fluorometer, altimeter, backscatter, transmissometer

CTD stations

Quantity: number of profiles = 39
Description: Seabird 911 plus Profiling stainless steel CTD; temperaturex2, conductivityx2, pressure, dissolved oxygen, fluorometer, transmissometer, LADCP, altimeter, pinger

Subsurface temperature and salinity measurements

Quantity: activity duration in days = 34
Description: Ship fitted underway data (surface temperature, salinity, fluorescence and transmissiometer)

Subsurface temperature and salinity measurements

Quantity: number of stations = 22
Description: The ocean mercury cycle, Total dissolved Hg, dissolved gases Hg, Total Hg samples collected from both rosetts, underway fish

Subsurface temperature and salinity measurements

Quantity: number of samples = 750
Description: Salinity

Geochemical tracers (eg freons)

Quantity: number of samples = 197
Description: Dissolved Noble gases/3He and H

Current profiler (eg ADCP)

Quantity: activity duration in days = 34
Description: Vessel mounted ADCP

Other physical oceanographic measurements

Quantity: number of profiles = 67
Description: Vertical turbulence profiler

Chemical oceanography

Oxygen

Quantity: number of samples = 700
Description: Winkler titrations for calibrating the CTD DO sensors

Carbon dioxide

Quantity: number of samples = 70
Description: Underway DOC/DIC/TDN/Alkalinity samples were taken from the non-toxic seawater supply (intake at ~5m depth)

Carbon dioxide

Quantity: number of stations = 24
Description: Profiles of DOC/DIC/TDN /Alkalinity were sampled from the Titanium and Stainless Steel CTDs in 250ml borosilicate bottles.

Phosphate

Quantity: number of stations = 7
Description: Sediment core samples collected using a multicore or a box core. Cores sampled for Ra,Pa,Th, Hg, Si isotopes, Biomarkers, pore water metals, macronutrients

Phosphate

Quantity: number of samples = 936
Description: Discrete water samples collected from CTD bottles to determine inorganic nutrient concentration. Analysed with segmented flow autoanalyser and colourimetric detection.

Nitrate

Ammonia

Silicate

Alkalinity

Quantity: number of samples = 70
Description: Underway DOC/DIC/TDN/Alkalinity samples were taken from the non-toxic seawater supply (intake at ~5m depth)

Alkalinity

Quantity: number of stations = 24
Description: Profiles of DOC/DIC/TDN /Alkalinity were sampled from the Titanium and Stainless Steel CTDs in 250ml borosilicate bottles.

Trace elements

Quantity: number of samples = 374
Description: Dissolved Trace metals, Ti CTD samples

Trace elements

Quantity: number of stations = 7
Description: SAPS (Stand Alone in-situ Pumping System) was used to collect particulate metals, biomarkers and Th234

Trace elements

Quantity: number of samples = 4
Description: Rainwater samples for determination of trace metal and major ion concentrations collected using funnel on ship.

Trace elements

Quantity: number of samples = 17
Description: Particulate aerosol sampled collected on filters using high volume collector on ship for trace metals and major ions

Trace elements

Quantity: number of samples = 374
Description: PARTICULATE TRACE METALS from OTE bottles Ti CTD samples

Trace elements

Quantity: number of samples = 88
Description: Dissolved iron speciation, Ti CTD samples

Trace elements

Quantity: number of stations = 11
Description: DISSOLVED TITANIUM, both CTDs

Trace elements

Quantity: number of samples = 374
Description: Dissolved (<0.2 ?m) Al concentrations, Ti CTD samples

Trace elements

Quantity: number of samples = 123
Description: Dissolved (<0.2 ?m) Al concentrations, underway samples

Trace elements

Quantity: number of samples = 374
Description: Dissolved (<0.2 ?m) Zn concentrations, Ti CTD samples

Trace elements

Quantity: number of samples = 123
Description: Dissolved (<0.2 ?m) Zn concentrations, underway samples

Trace elements

Quantity: number of samples = 123
Description: Total dissolvable, Dissolved (<0.2 ?m) Fe concentrations, underway samples

Trace elements

Quantity: number of samples = 374
Description: Total dissolvable (unfiltered), Dissolved (<0.2 ?m) Fe concentrations, Ti CTD samples

Trace elements

Quantity: number of samples = 374
Description: Dissolved (<0.2 ?m) Co concentrations, Ti CTD samples

Trace elements

Quantity: number of samples = 123
Description: Dissolved (<0.2 ?m) Co concentrations, underway samples

Trace elements

Quantity: number of samples = 196
Description: Total dissolvable metal to be analysed by ICP-MS on shore at NOC

Radioactivity

Quantity: number of stations = 12
Description: DOWNWARD PARTICLE FLUXES Th234,U238 samples from rosette and SAPS

Isotopes

Quantity: number of stations = 4
Description: Dissolved Pb, isotopes and Dissolved Pb concentration

Isotopes

Quantity: number of samples = 94
Description: d13C OF DIC

Isotopes

Quantity: number of samples = 11
Description: Metal isotopes in Aerosol (Pb, Nd, Sr, Zn, and Cd isotopes)

Isotopes

Quantity: number of samples = 332
Description: Oxygen Isotopes

Isotopes

Quantity: number of samples = 32
Description: 223,224Ra and Ac in surface waters

Isotopes

Quantity: number of stations = 7
Description: 227Ac and 223,224,226,228Ra in deep waters (Isotopes and concentration) using SAPS

Isotopes

Quantity: number of samples = 16
Description: 223,224Ra and Ac, CTD samples

Isotopes

Quantity: number of samples = 170
Description: Dissolved Nd isotopes

Isotopes

Quantity: number of stations = 39
Description: Nitrate d15N and d18O

Isotopes

Quantity: number of samples = 68
Description: Zn and Cu isotopes

Isotopes

Quantity: number of samples = 160
Description: Fe isotopes

Isotopes

Quantity: number of samples = 68
Description: Cr,Cd isotopes

Isotopes

Quantity: number of samples = 192
Description: Particulate d15N and POC, PON isotopes

Isotopes

Quantity: number of stations = 7
Description: ASSESSING MIXING AND CIRCULATION IN DEEP WATERS WITH 227AC AND 223,224,226,228RA, SAPS

Isotopes

Quantity: number of samples = 173
Description: Dissolved and Particulate 231Pa/230Th analysed using MC-ICP-MS

Isotopes

Quantity: number of samples = 3
Description: Si isotopes, sea water, pore water, sediment, particles

Other chemical oceanographic measurements

Quantity: number of stations = 7
Description: SAPS (Stand Alone in-situ Pumping System) was used to collect particulate metals, biomarkers and Th234

Other chemical oceanographic measurements

Quantity: number of samples = 192
Description: Dissolved Barium will be analaysed at the University of Edinburgh

Contamination

Trace metals

Quantity: number of stations = 22
Description: The ocean mercury cycle, Total dissolved Hg, dissolved gases Hg, Total Hg samples collected from both rosetts, underway fish

Trace metals

Quantity: number of stations = 18
Description: As/Sb surface water samples and 6 depth profiles

Trace metals

Quantity: number of stations = 10
Description: Dissolved Rare earth elements (REE) to be analysed at Oxford by ICP_MS

Biology and fisheries

Phytoplankton pigs (eg chlorophyll, fluorescence)

Quantity: number of stations = 39
Description: Total chlorophyll measurements

Phytoplankton pigs (eg chlorophyll, fluorescence)

Quantity: number of samples = 190
Description: HPLC. Analysis for pigments to be analysed at Oxford

Phytoplankton pigs (eg chlorophyll, fluorescence)

Quantity: number of samples = 190
Description: Absorptive properties of phytoplankton cells

Particulate organic matter (inc POC, PON)

Quantity: number of samples = 192
Description: Particulate d15N and POC, PON isotopes

Biochemical measurements (eg lipids, amino acids)

Quantity: number of samples = 11
Description: Aerosol organic biomarkers

Biochemical measurements (eg lipids, amino acids)

Quantity: number of samples = 50
Description: DNA and RNA. To be analysed at IFM-GEOMAR

Biochemical measurements (eg lipids, amino acids)

Quantity: number of stations = 7
Description: SAPS (Stand Alone in-situ Pumping System) was used to collect particulate metals, biomarkers and Th234

Biochemical measurements (eg lipids, amino acids)

Quantity: number of stations = 24
Description: Intact Polar Lipids (IPL) and Biomarkers

Phytoplankton

Quantity: number of samples = 190
Description: ANALYSIS OF PHYTOPLANKTON COMMUNITY STRUCTURE using flow cytometry

Pelagic bacteria/micro-organisms

Quantity: number of stations = 16
Description: FAST REPITITION RATE FLUOROMETRY (FRRF) depth profiles collected from the standard CTD

Pelagic bacteria/micro-organisms

Description: Underway FRRF samples were taken from the non-toxic seawater supply (intake at ~5m depth)

Other biological/fisheries measurement

Quantity: number of samples = 60
Description: Flow cytometry and qPCR analysis of marine picocynaobacteria. To be analysed at MIT

Other biological/fisheries measurement

Description: CDOM

Meteorology

Routine standard measurements

Quantity: activity duration in days = 34
Description: Ship fitted meterological instruments (wind speed/direction, Incident light, PAR etc)

Routine standard measurements

Quantity: activity duration in days = 34
Description: Ship fitted underway data (surface temperature, salinity, fluorescence and transmissiometer)

Geology and geophysics

Core - soft bottom

Data held at BODC

Get data

Series/Profiles

2 Bottle station

Reference numbers
Vertical spatial coordinates
Stable isotopes in water bodies
Quality control flags
Dissolved metal concentrations in the water column

[Show series]

Reference numbers
Vertical spatial coordinates
Stable isotopes in water bodies
Quality control flags
Dissolved metal concentrations in the water column

[Hide series]

BODC id	Date/Time	Location	Doc.
2108281	2012-01-22 12:55	38° 0' 44" S 50° 59' 42" W
2112243	2012-01-22 12:55	38° 0' 44" S 50° 59' 42" W

62 CTD/STD cast

Reference numbers
Transmittance and attenuance of the water column
Salinity of the water column
Temperature of the water column
Vertical spatial coordinates
Dissolved oxygen parameters in the water column
Density of the water column
Raw light meter output
Electrical conductivity of the water column
Chlorophyll pigment concentrations in water bodies

[Show series]

[Hide series]

BODC id	Date/Time	Location
1132351	2011-12-28 04:04:29 — 2011-12-28 04:24:06	34° 36' 44" S 17° 3' 13" E
1132467	2012-01-06 11:13:43 — 2012-01-06 11:26:51	39° 59' 57" S 9° 39' 59" W
1132572	2012-01-10 08:22:37 — 2012-01-10 09:35:48	40° 0' 7" S 16° 27' 48" W
1132719	2012-01-15 16:57:25 — 2012-01-15 18:24:07	39° 59' 18" S 32° 29' 28" W
1132824	2012-01-21 00:14 — 2012-01-21 01:55:56	39° 59' 38" S 47° 25' 0" W
1132885	2012-01-22 16:36:58 — 2012-01-22 18:00:50	38° 0' 47" S 50° 59' 36" W
1132897	2012-01-22 20:58:39 — 2012-01-22 22:32:29	38° 2' 47" S 50° 58' 39" W
1132916	2012-01-23 03:30:34 — 2012-01-23 05:00:56	38° 6' 33" S 50° 58' 35" W
1132941	2012-01-24 15:38:17 — 2012-01-24 16:49:44	37° 1' 34" S 52° 29' 19" W
1132338	2011-12-28 01:35:38 — 2011-12-28 01:52:32	34° 36' 44" S 17° 3' 13" E
1132443	2012-01-03 12:55:19 — 2012-01-03 13:57:40	40° 0' 53" S 0° 29' 59" W
1132547	2012-01-08 17:47:45 — 2012-01-08 18:58:02	40° 0' 0" S 13° 0' 0" W
1132873	2012-01-22 11:10:59 — 2012-01-22 12:47:05	38° 0' 44" S 50° 59' 42" W
1132989	2012-01-25 15:30:31 — 2012-01-25 16:09:38	36° 31' 58" S 53° 6' 4" W
1132375	2011-12-28 18:03:12 — 2011-12-28 18:19:35	35° 28' 6" S 14° 59' 46" E
1132688	2012-01-14 15:13:42 — 2012-01-14 16:32:35	40° 0' 0" S 28° 0' 0" W
1132928	2012-01-24 09:39:58 — 2012-01-24 11:06:33	37° 1' 32" S 52° 30' 8" W
1132431	2012-01-01 06:45:08 — 2012-01-01 06:58:30	39° 59' 58" S 5° 31' 3" E
1132492	2012-01-07 03:15:27 — 2012-01-07 03:42:04	40° 15' 26" S 9° 51' 11" W
1132596	2012-01-10 21:36:43 — 2012-01-10 21:51	40° 0' 0" S 16° 28' 0" W
1132652	2012-01-13 08:55:43 — 2012-01-13 09:08:25	40° 0' 0" S 23° 48' 0" W
1132664	2012-01-14 09:15:54 — 2012-01-14 09:27:51	40° 0' 0" S 28° 0' 0" W
1132707	2012-01-15 15:19:23 — 2012-01-15 15:30:28	39° 59' 54" S 32° 29' 54" W
1132756	2012-01-17 06:00:08 — 2012-01-17 07:37:04	40° 0' 0" S 37° 24' 59" W
1132812	2012-01-19 03:13:52 — 2012-01-19 03:51:31	40° 0' 0" S 42° 25' 0" W
1132836	2012-01-21 06:06:44 — 2012-01-21 07:53:21	39° 59' 42" S 47° 25' 0" W
1132363	2011-12-28 16:28:18 — 2011-12-28 16:52:14	35° 28' 6" S 14° 59' 46" E
1132615	2012-01-12 00:17:04 — 2012-01-12 01:48:24	40° 0' 1" S 19° 55' 48" W
1132732	2012-01-16 22:10:11 — 2012-01-16 22:33:28	40° 0' 0" S 37° 25' 0" W
1132904	2012-01-23 01:53:03 — 2012-01-23 02:10:30	38° 5' 11" S 50° 58' 52" W
1132953	2012-01-25 01:07:30 — 2012-01-25 01:26:42	37° 0' 47" S 52° 29' 57" W
1132326	2011-12-26 07:19:49 — 2011-12-26 07:26:03	34° 56' 53" S 19° 20' 49" E
1132418	2011-12-30 18:19:22 — 2011-12-30 18:31:43	38° 24' 2" S 10° 24' 5" E
1132480	2012-01-06 20:43:57 — 2012-01-06 21:51:55	40° 0' 1" S 9° 39' 45" W
1132523	2012-01-08 10:46:43 — 2012-01-08 10:57:59	39° 59' 53" S 13° 0' 0" W
1132559	2012-01-09 01:14:13 — 2012-01-09 02:01:23	40° 0' 0" S 12° 59' 59" W
1132720	2012-01-15 22:53:14 — 2012-01-16 00:28	39° 59' 38" S 32° 29' 33" W
1132793	2012-01-19 00:21:27 — 2012-01-19 02:00:11	40° 0' 0" S 42° 25' 0" W
1132848	2012-01-21 10:47:18 — 2012-01-21 11:00:07	39° 59' 8" S 47° 25' 0" W
1132455	2012-01-04 06:38:03 — 2012-01-04 08:12:23	40° 0' 3" S 3° 2' 3" W
1132535	2012-01-08 12:22:02 — 2012-01-08 14:11:19	40° 0' 0" S 12° 59' 55" W
1132584	2012-01-10 11:37:36 — 2012-01-10 11:53:07	40° 0' 6" S 16° 27' 54" W
1132603	2012-01-11 19:22:54 — 2012-01-11 20:48:41	39° 59' 57" S 19° 55' 56" W
1132639	2012-01-12 23:52:36 — 2012-01-13 01:22:23	40° 0' 0" S 23° 48' 0" W
1132744	2012-01-17 00:11:22 — 2012-01-17 01:41:44	40° 0' 0" S 37° 24' 59" W
1132800	2012-01-19 05:12:28 — 2012-01-19 06:52	40° 0' 0" S 42° 25' 0" W
1132965	2012-01-25 02:40:12 — 2012-01-25 03:01:42	37° 0' 33" S 52° 29' 57" W
1132387	2011-12-29 05:38:14 — 2011-12-29 07:08:38	36° 20' 29" S 13° 6' 35" E
1132399	2011-12-29 09:55:07 — 2011-12-29 11:53:15	36° 21' 37" S 13° 5' 48" E
1132406	2011-12-29 22:49 — 2011-12-29 23:00:58	36° 20' 35" S 13° 6' 22" E
1132479	2012-01-06 12:49:59 — 2012-01-06 14:03:08	39° 59' 57" S 9° 40' 4" W
1132511	2012-01-07 08:39:46 — 2012-01-07 09:10:42	40° 15' 27" S 9° 51' 17" W
1132560	2012-01-09 20:26:59 — 2012-01-09 21:39:48	40° 0' 2" S 16° 27' 57" W
1132627	2012-01-12 05:17:28 — 2012-01-12 05:51:25	40° 0' 1" S 19° 55' 49" W
1132640	2012-01-13 04:47:01 — 2012-01-13 06:15:21	40° 0' 0" S 23° 48' 0" W
1132676	2012-01-14 10:45:21 — 2012-01-14 12:01:12	40° 0' 0" S 28° 0' 0" W
1132768	2012-01-17 18:43:24 — 2012-01-17 20:30:50	40° 0' 0" S 38° 15' 13" W
1132781	2012-01-18 17:51:48 — 2012-01-18 18:06:08	40° 0' 4" S 42° 24' 56" W
1132861	2012-01-22 08:35:17 — 2012-01-22 08:50:32	37° 58' 58" S 51° 1' 45" W
1132977	2012-01-25 11:44:29 — 2012-01-25 12:21:33	36° 32' 18" S 53° 6' 6" W
1132990	2012-01-26 07:16:42 — 2012-01-26 07:21:03	36° 0' 0" S 54° 0' 0" W
1133004	2012-01-26 08:17:08 — 2012-01-26 08:21:25	36° 0' 0" S 54° 0' 0" W

Discrete samples

125 All plastic clean surface pumped supply

Carotenoid and flavenoid pigment concentrations in water bodies
Stable isotopes in water bodies
Chlorophyll pigment concentrations in water bodies
Dissolved metal concentrations in the water column

22 Atmospheric air sampling pump

Sulphur species concentrations in the atmosphere
Metal concentrations in the atmosphere
Atmospheric particulates
Concentration of nitrogen species in the atmosphere
Concentration of inorganic halogens in the atmosphere
Stable isotopes in the atmosphere

39 CTD frame plus rosette sampler

Total dissolved inorganic carbon (TCO2) concentration in the water column
Carotenoid and flavenoid pigment concentrations in water bodies
Nitrite concentration parameters in the water column
Phosphate concentration parameters in the water column
Salinity of the water column
Temperature of the water column
Dissolved oxygen parameters in the water column
Total metal concentrations in water bodies
Stable isotopes in water bodies
Silicate concentration parameters in the water column
Radioactivity in water bodies
Nitrate concentration parameters in the water column
Alkalinity, acidity and pH of the water column
Chlorophyll pigment concentrations in water bodies
Dissolved metal concentrations in the water column

6 Rain water collector

Precipitation chemistry

7 Stand-alone pumps

Particulate metal concentrations in the water column
Nitrite concentration parameters in the water column
Phosphate concentration parameters in the water column
Salinity of the water column
Temperature of the water column
Dissolved oxygen parameters in the water column
Stable isotopes in water bodies
Silicate concentration parameters in the water column
Particulate total and organic phosphorus concentrations in the water column
Radioactivity in water bodies
Nitrate concentration parameters in the water column
Dissolved metal concentrations in the water column

Resources

RRS James Cook JC068 (GA10)

Cruise summary report

Quick links

BODC holdings

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