Metadata Report for BODC Series Reference Number 1102091
Metadata Summary
Problem Reports
Data Access Policy
Narrative Documents
Project Information
Data Activity or Cruise Information
Fixed Station Information
BODC Quality Flags
SeaDataNet Quality Flags
Metadata Summary
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Problem Reports
No Problem Report Found in the Database
Data Access Policy
Open Data supplied by Natural Environment Research Council (NERC)
You must always use the following attribution statement to acknowledge the source of the information: "Contains data supplied by Natural Environment Research Council."
Narrative Documents
Sea-Bird Dissolved Oxygen Sensor SBE 43 and SBE 43F
The SBE 43 is a dissolved oxygen sensor designed for marine applications. It incorporates a high-performance Clark polarographic membrane with a pump that continuously plumbs water through it, preventing algal growth and the development of anoxic conditions when the sensor is taking measurements.
Two configurations are available: SBE 43 produces a voltage output and can be incorporated with any Sea-Bird CTD that accepts input from a 0-5 volt auxiliary sensor, while the SBE 43F produces a frequency output and can be integrated with an SBE 52-MP (Moored Profiler CTD) or used for OEM applications. The specifications below are common to both.
Specifications
Housing | Plastic or titanium |
Membrane | 0.5 mil- fast response, typical for profile applications 1 mil- slower response, typical for moored applications |
Depth rating | 600 m (plastic) or 7000 m (titanium) 10500 m titanium housing available on request |
Measurement range | 120% of surface saturation |
Initial accuracy | 2% of saturation |
Typical stability | 0.5% per 1000 h |
Further details can be found in the manufacturer's specification sheet.
Instrument Description
CTD Unit and Auxiliary Sensors
A Sea-Bird SBE 911plus CTD with dual pumped temperature and conductivity sensors and Sea-Bird SBE32 carousel comprising twenty-four OTE externally sprung 20 litre Niskin bottles were used for all CTD casts.
Sensor | Model | Serial Number | Calibration (UT) | Comments |
---|---|---|---|---|
Temperature sensor 1 | SBE 3+ premium temperature sensor | 03P-4116 | 03/09/2008 | - |
Conductivity sensor 1 | Sea-Bird SBE 4C conductivity sensor | 04C-2580 | 03/09/2008 | - |
Pressure sensor | Paroscientific Digiquartz pressure sensor with temperature compensatation | 83008 | 10/10/2008 | - |
Oxygen sensor | Sea-Bird SBE43 dissolved oxygen sensor | 43-0862 | 30/10/2008 | - |
Temperature sensor 2 | SBE 3+ premium temperature sensor | 03P-4105 | 17/09/2008 | - |
Conductivity sensor 2 | Sea-Bird SBE 4C conductivity sensor | 04C-3052 | 03/08/2008 | - |
Fluorometer | Chelsea Instruments Aquatracka fluorometer | 088108 | 09/01/2008 | - |
Altimeter | Benthos 915T altimeter | 1040 | 03/2003 | - |
Backscatter sensor | Wetlabs backscatter sensor | BBRTD-115R | 13/05/2008 | - |
Transmissometer | Chelsea Instruments Alphatracka transmissometer, pathlength 25 cm and wavelength 660 nm. | 161045 | 08/10/2005 | - |
Acoustic Doppler Current Profiler (ADCP) | RDI 300 KHz workhorse ADCP | - | - | Downward looking |
Sea-Bird Electronics SBE 911 and SBE 917 series CTD profilers
The SBE 911 and SBE 917 series of conductivity-temperature-depth (CTD) units are used to collect hydrographic profiles, including temperature, conductivity and pressure as standard. Each profiler consists of an underwater unit and deck unit or SEARAM. Auxiliary sensors, such as fluorometers, dissolved oxygen sensors and transmissometers, and carousel water samplers are commonly added to the underwater unit.
Underwater unit
The CTD underwater unit (SBE 9 or SBE 9 plus) comprises a protective cage (usually with a carousel water sampler), including a main pressure housing containing power supplies, acquisition electronics, telemetry circuitry, and a suite of modular sensors. The original SBE 9 incorporated Sea-Bird's standard modular SBE 3 temperature sensor and SBE 4 conductivity sensor, and a Paroscientific Digiquartz pressure sensor. The conductivity cell was connected to a pump-fed plastic tubing circuit that could include auxiliary sensors. Each SBE 9 unit was custom built to individual specification. The SBE 9 was replaced in 1997 by an off-the-shelf version, termed the SBE 9 plus, that incorporated the SBE 3 plus (or SBE 3P) temperature sensor, SBE 4C conductivity sensor and a Paroscientific Digiquartz pressure sensor. Sensors could be connected to a pump-fed plastic tubing circuit or stand-alone.
Temperature, conductivity and pressure sensors
The conductivity, temperature, and pressure sensors supplied with Sea-Bird CTD systems have outputs in the form of variable frequencies, which are measured using high-speed parallel counters. The resulting count totals are converted to numeric representations of the original frequencies, which bear a direct relationship to temperature, conductivity or pressure. Sampling frequencies for these sensors are typically set at 24 Hz.
The temperature sensing element is a glass-coated thermistor bead, pressure-protected inside a stainless steel tube, while the conductivity sensing element is a cylindrical, flow-through, borosilicate glass cell with three internal platinum electrodes. Thermistor resistance or conductivity cell resistance, respectively, is the controlling element in an optimized Wien Bridge oscillator circuit, which produces a frequency output that can be converted to a temperature or conductivity reading. These sensors are available with depth ratings of 6800 m (aluminium housing) or 10500 m (titanium housing). The Paroscientific Digiquartz pressure sensor comprises a quartz crystal resonator that responds to pressure-induced stress, and temperature is measured for thermal compensation of the calculated pressure.
Additional sensors
Optional sensors for dissolved oxygen, pH, light transmission, fluorescence and others do not require the very high levels of resolution needed in the primary CTD channels, nor do these sensors generally offer variable frequency outputs. Accordingly, signals from the auxiliary sensors are acquired using a conventional voltage-input multiplexed A/D converter (optional). Some Sea-Bird CTDs use a strain gauge pressure sensor (Senso-Metrics) in which case their pressure output data is in the same form as that from the auxiliary sensors as described above.
Deck unit or SEARAM
Each underwater unit is connected to a power supply and data logging system: the SBE 11 (or SBE 11 plus) deck unit allows real-time interfacing between the deck and the underwater unit via a conductive wire, while the submersible SBE 17 (or SBE 17 plus) SEARAM plugs directly into the underwater unit and data are downloaded on recovery of the CTD. The combination of SBE 9 and SBE 17 or SBE 11 are termed SBE 917 or SBE 911, respectively, while the combinations of SBE 9 plus and SBE 17 plus or SBE 11 plus are termed SBE 917 plus or SBE 911 plus.
Specifications
Specifications for the SBE 9 plus underwater unit are listed below:
Parameter | Range | Initial accuracy | Resolution at 24 Hz | Response time |
---|---|---|---|---|
Temperature | -5 to 35°C | 0.001°C | 0.0002°C | 0.065 sec |
Conductivity | 0 to 7 S m-1 | 0.0003 S m-1 | 0.00004 S m-1 | 0.065 sec (pumped) |
Pressure | 0 to full scale (1400, 2000, 4200, 6800 or 10500 m) | 0.015% of full scale | 0.001% of full scale | 0.015 sec |
Further details can be found in the manufacturer's specification sheet.
BODC Processing
Twenty six CTD profiles were provided as CTD01 was a test cast. The data were received in a structured matlab format and converted into BODC internal format (QXF). Potential temperature of the water body was derived by computation using UNESCO 1983 algorithm, sigma-theta was derived by computation from salinity and potential temperature also using UNESCO 1983 algorithm. The following table shows how the variables within the matlab file were mapped to appropriate BODC parameter codes:
Originator's Parameter Name | Units | Description | BODC Parameter Code | Units | Comments |
---|---|---|---|---|---|
bin_g | kg m-3 | Neutral density | - | - | Derived variable, not transferred. |
bin_oxy | µmol kg -1 | Calibrated dissolved oxygen | DOXYSC01 | µmol l -1 | Unit conversion made. |
bin_press | dbar | Pressure | PRESPR01 | dbar | - |
bin_ptemp | Potential temperature | °C | - | - | Derived variable, not transferred. |
bin_sal | - | Calibrated salinity | PSALCC01 | Dimensionless | Conductivity was calibrated and then salinity derived from calibrated conductivity. |
bin_temp | °C | Temperature | TEMPST01 | °C | - |
lat | Degrees | Latitude | - | - | Metadata |
lon | Degrees | Longitude | - | - | Metadata |
- | - | Potential temperature | POTMCV01 | °C | Generated by BODC using the Fofonoff and Millard (1983) algorithm. |
- | - | Sigma-theta | SIGTPR01 | kg m-3 | Generated by BODC using the Fofonoff and Millard (1983) algorithm |
- | - | Saturation of oxygen | OXYSSC01 | Percent | Generated by BODC using Benson and Krause algorithm. |
- | - | Density reciprocal | TOKGPR01 | l kg-1 | Generated by BODC. |
TOKGPR01 was generated at BODC to convert units of kg-1 to l-1.
TOKGPR01=1000/(sigma-theta+1000)
where sigma-theta = potential density based on salinity, potential temperature and a reference pressure of 0 dbar (Fofonoff and Millard (1983)). The reformatted data were visualised using the in-house EDSERPLO software. The data were screened and quality control flags were applied to data as necessary. Overall no quality issues with very few flags added.
References
Benson, B.B. and Krause, D., 1984. The concentration and isotopic fractionation of oxygen dissolved in freshwater and seawater in equilibrium with the atmosphere. Limnology and oceanography, No.29(3), 620-632pp.
Fofonoff, N.P. and Millard, R.C., 1983. Algorithms for computations of fundamental properties of seawater. UNESCO Technical Papers in Marine Science, No.44, 53pp.
Originator's Data Processing
Sampling Strategy
Twenty seven CTD profiles including a test cast (CTD01) were performed during the cruise. Unfortunately, due to a medical evacuation, the cruise was aborted on 14/01/2009 after station 27 to return to Port Stanley, Falkland Islands. ANDREX cruise JR239 which took place between 19/03/2010 and 24/05/2010 aimed to complete the rest of the stations intended for this cruise.
Three stations at the start of the section occupied WOCE I06S, in addition several cast occupied WOCE SR04.
Data processing
Initial data processing of the raw data files was performed using Sea-Bird processing software ( SBE.DataProcessing-Win32: v.7.18). Firstly, the raw data were converted into physical units using 'DatCnv'. 'AlignCTD' was then used to to shift the oxygen sensor relative to the pressure data by 5 seconds, compensating for lags in the sensor response time. A de-spiking routine 'WildEdit' scanned the data twice, calculating the standard deviation of a set number of scans, and setting values that were outside a set number of standard deviations (sd) of the mean, to bad data values. The effect of thermal 'inertia' on the conductivity cells was then removed using the routine 'CellTM'. Lastly, the data files were converted from binary into ASCII format so that they could be read into Pstar format.
After the Sea-Bird processing, further processing was undertaken using the National Oceanography Centre's Pstar programs. Firstly, the ASCII output was converted to Pstar and the headers were set, with the information for the header extracted from the Sea-Bird ASCII file where possible (script ctd0). Residual spikes from all of the variables were removed ('pmdian'), the data were averaged into a 1Hz file ('pavrge'), absent data values in the pressure data were interpolated ('pintrp'), salinity, potential temperature, sigma0 and sigma2 (referenced to 2000 dbar) were calculated ('peos83') using and a 10 second averaged file was also created (script ctd1). The head and tail of the 1hz file was then cropped to select the relevant data cycles for just the up and down casts of the CTD, the data were averaged into 2 dbar pressure bins and position information was extracted for the start data cycle of the downcast file and written to the header (script ctd2).
The bottle salinity data were then processed, the files were formatted to Pstar and conductivity calculated. These were used in order to calibrate the CTD conductivities.
Field Calibrations
Salinity
The CTD conductivities were calibrated against CTD bottle conductivities. CTD conductivity calibrations were determined by calculating the conductivity differences for both CTD sensors (bottle minus CTD). For CTD conductivity sensor 1 and the 145 bottle values in the range (-0.005, 0.005 mmho cm-1), the mean difference was -0.0004 (sd 0.0013). For CTD conductivity sensor2 and the 145 bottle values in the range (-0.005, 0.005 mmho cm-1), the mean difference was -0.0009 (sd 0.0013). CTD conductivities were adjusted with these offsets, and salinities recalculated.
The following method provided by Brian King is the standard National Oceanography Centre Southampton scientists' approach for calibrating conductivity;
1) Bottle salinity, as measured by the bench salinometer, is converted to 'potential conductivity' at the CTD bottle location using in situ temperature and pressure, and the CSIRO EOS-80 Seawater algorithms.
2) CTD conductivity is calibrated against this 'potential conductivity'.
3) CTD salinity is derived using the corrected conductivity data and the PSS-78 algorithm.
Oxygen
CTD oxygens were calibrated against bottle oxygens using an offset and the pressure-dependent term, Obottle - OCTD = a + bP where a and b are offset and slope parameters of the linear fit. The differences between bottle oxygen concentration (Obottle) and equivalent downcast CTD oxygen concentration (OCTD) were calculated and, after the removal of outliers, regressed as a linear function of pressure using the equation above. Taking Obottle to represent the true value of seawater oxygen concentration and assuming this fit adequately explains the remainder of the data points, the equation was employed to calibrate the downcast CTD oxygen profiles to 'true' oxygen concentrations. The values of a and b were found to be 6.3932 and 0.0015837, respectively, and CTD oxygens adjusted accordingly.
Project Information
Antarctic Deep Water Rates of Export (ANDREX) project document
ANDREX is a UK field programme aimed at investigating the role of the Weddell Gyre in the Meridional Overturning Circulation (MOC) and its influence on deep ocean properties.
The MOC is a critical regulator of Earth's climate and is crucial for deep water ventilation across the globe. Surface currents transport waters towards the poles, where they become dense and sink, flowing equatorward as deep, cool currents. The MOC ensures that the deep oceans remain ventilated and conducive to life, and is also important for anthropogenic carbon sequestration. The southern closure of the MOC in the Weddell Sea is strongly influenced by the Weddell Gyre, which facilitates the exchange of waters between the Antarctic Circumpolar Current (ACC) and the waters of the continental shelf. Cooling and sea ice formation in the Weddell Sea lead to overturning of the water column and the ventilation of Antarctic Bottom Water (AABW), which flows out of the Weddell Sea and into the deep oceans to the north. Thus, the Weddell Gyre plays an important role in the properties of deep ocean waters on a global scale.
The goals of ANDREX are to investigate the exchange of water masses between the ACC and the Weddell Sea, including AABW formation and ventilation rates, carbon and nutrient cycling, the influence of fresh water input from sea ice, precipitation and glacial melt, and the role of the Weddell Gyre in anthropogenic carbon sequestration. The project includes hydrographic, ventilation tracer, biogeochemical and bathymetric measurements along the outer rim of the Weddell Gyre.
ANDREX is funded by the UK Natural Environment Research Council (NERC) Antarctic Funding Initiative (AFI) and involves scientists from the National Oceanography Centre, Southampton (NOC), the British Antarctic Survey (BAS), the University of East Anglia (UEA), the University of Manchester, the Alfred Wegener Institut (AWI) and the Woods Hole Oceanographic Institution (WHOI).
For more information please see the official project website at ANDREX
Data Activity or Cruise Information
Cruise
Cruise Name | JC030 |
Departure Date | 2008-12-26 |
Arrival Date | 2009-01-30 |
Principal Scientist(s) | Sheldon Bacon (National Oceanography Centre, Southampton) |
Ship | RRS James Cook |
Complete Cruise Metadata Report is available here
Fixed Station Information
Fixed Station Information
Station Name | WOCE Southern Repeat Section 4 |
Category | Offshore route/traverse |
World Ocean Circulation Experiment (WOCE) Southern Repeat Section 4
WOCE established a repeat hydrographic section across Northern Weddell sea and designated it SR04. The section is located between Antarctic Peninsula and south of South Africa within a bounding box of -44.00583, -53.624 (North-Western corner) and -71.02167, 38.99683 (South-Eastern corner).
A table of cruises which have occupied SR04 is presented below with links to the relevant cruise reports or cruise narratives (where available).
Cruise | Country | Ship | Start Date | End Date | Comments |
---|---|---|---|---|---|
ANT XIII/2 | Germany | FS Polarstern | 06/09/1989 | 08/10/1989 | - |
ANT IX/2 | Germany | FS Polarstern | 17/11/1990 | 30/12/1990 | - |
ANT X/4 | Germany | FS Polarstern | 21/05/1992 | 05/08/1992 | - |
ANT X/7 | Germany | FS Polarstern | 03/12/1992 | 22/01/1993 | - |
ANT XIII/4 | Germany | FS Polarstern | 17/03/1996 | 20/05/1996 | WOCE line also known as S04A |
ANT XV/4 | Germany | FS Polarstern | 28/03/1998 | 23/05/1998 | - |
JC030 | United Kingdom | RRS James Cook | 26/12/2008 | 30/01/2009 | Repeat of ANT XIII/4 |
Related Fixed Station activities are detailed in Appendix 1
BODC Quality Control Flags
The following single character qualifying flags may be associated with one or more individual parameters with a data cycle:
Flag | Description |
---|---|
Blank | Unqualified |
< | Below detection limit |
> | In excess of quoted value |
A | Taxonomic flag for affinis (aff.) |
B | Beginning of CTD Down/Up Cast |
C | Taxonomic flag for confer (cf.) |
D | Thermometric depth |
E | End of CTD Down/Up Cast |
G | Non-taxonomic biological characteristic uncertainty |
H | Extrapolated value |
I | Taxonomic flag for single species (sp.) |
K | Improbable value - unknown quality control source |
L | Improbable value - originator's quality control |
M | Improbable value - BODC quality control |
N | Null value |
O | Improbable value - user quality control |
P | Trace/calm |
Q | Indeterminate |
R | Replacement value |
S | Estimated value |
T | Interpolated value |
U | Uncalibrated |
W | Control value |
X | Excessive difference |
SeaDataNet Quality Control Flags
The following single character qualifying flags may be associated with one or more individual parameters with a data cycle:
Flag | Description |
---|---|
0 | no quality control |
1 | good value |
2 | probably good value |
3 | probably bad value |
4 | bad value |
5 | changed value |
6 | value below detection |
7 | value in excess |
8 | interpolated value |
9 | missing value |
A | value phenomenon uncertain |
B | nominal value |
Q | value below limit of quantification |
Appendix 1: WOCE Southern Repeat Section 4
Related series for this Fixed Station are presented in the table below. Further information can be found by following the appropriate links.
If you are interested in these series, please be aware we offer a multiple file download service. Should your credentials be insufficient for automatic download, the service also offers a referral to our Enquiries Officer who may be able to negotiate access.
Series Identifier | Data Category | Start date/time | Start position | Cruise |
---|---|---|---|---|
1102263 | CTD or STD cast | 2009-01-01 05:59:53 | 54.0 S, 30.0001 E | RRS James Cook JC030 |
1253135 | Water sample data | 2009-01-01 08:16:00 | 54.00002 S, 30.00007 E | RRS James Cook JC030 |
1102287 | CTD or STD cast | 2009-01-02 01:31:02 | 54.0035 S, 29.1109 E | RRS James Cook JC030 |
1253159 | Water sample data | 2009-01-02 03:45:00 | 54.00349 S, 29.11096 E | RRS James Cook JC030 |
1102299 | CTD or STD cast | 2009-01-02 14:11:19 | 54.0283 S, 27.3817 E | RRS James Cook JC030 |
1253160 | Water sample data | 2009-01-02 16:22:00 | 54.02867 S, 27.38152 E | RRS James Cook JC030 |
2113479 | Water sample data | 2009-01-02 16:22:30 | 54.02867 S, 27.38152 E | RRS James Cook JC030 |
1102306 | CTD or STD cast | 2009-01-02 23:36:23 | 54.0029 S, 26.4887 E | RRS James Cook JC030 |
2113480 | Water sample data | 2009-01-03 01:47:42 | 54.00288 S, 26.48865 E | RRS James Cook JC030 |
1253172 | Water sample data | 2009-01-03 01:48:00 | 54.00288 S, 26.48865 E | RRS James Cook JC030 |
1102318 | CTD or STD cast | 2009-01-03 07:56:35 | 54.016 S, 25.7267 E | RRS James Cook JC030 |
1253184 | Water sample data | 2009-01-03 09:37:00 | 54.01605 S, 25.72679 E | RRS James Cook JC030 |
1102331 | CTD or STD cast | 2009-01-03 19:28:37 | 54.7528 S, 24.6381 E | RRS James Cook JC030 |
2113492 | Water sample data | 2009-01-03 21:19:40 | 54.75288 S, 24.63811 E | RRS James Cook JC030 |
1253196 | Water sample data | 2009-01-03 21:20:00 | 54.75288 S, 24.63811 E | RRS James Cook JC030 |
1102042 | CTD or STD cast | 2009-01-04 07:29:03 | 55.4994 S, 23.4341 E | RRS James Cook JC030 |
1253203 | Water sample data | 2009-01-04 09:31:00 | 55.49938 S, 23.43414 E | RRS James Cook JC030 |
1102054 | CTD or STD cast | 2009-01-04 19:28:57 | 56.2449 S, 22.2473 E | RRS James Cook JC030 |
1253215 | Water sample data | 2009-01-04 21:41:00 | 56.24488 S, 22.2473 E | RRS James Cook JC030 |
2113511 | Water sample data | 2009-01-04 21:41:17 | 56.24488 S, 22.2473 E | RRS James Cook JC030 |
1102066 | CTD or STD cast | 2009-01-05 07:25:24 | 57.0009 S, 21.006 E | RRS James Cook JC030 |
1253227 | Water sample data | 2009-01-05 09:42:00 | 57.00088 S, 21.00595 E | RRS James Cook JC030 |
1102078 | CTD or STD cast | 2009-01-05 19:16:59 | 57.2301 S, 18.9898 E | RRS James Cook JC030 |
1253239 | Water sample data | 2009-01-05 21:24:00 | 57.23005 S, 18.98979 E | RRS James Cook JC030 |
2113523 | Water sample data | 2009-01-05 21:24:24 | 57.23005 S, 18.98979 E | RRS James Cook JC030 |
1253240 | Water sample data | 2009-01-06 08:00:00 | 57.36885 S, 17.25871 E | RRS James Cook JC030 |
1102109 | CTD or STD cast | 2009-01-06 17:06:06 | 57.5375 S, 15.3751 E | RRS James Cook JC030 |
1253252 | Water sample data | 2009-01-06 19:13:00 | 57.53753 S, 15.37504 E | RRS James Cook JC030 |
2113535 | Water sample data | 2009-01-06 19:13:13 | 57.53753 S, 15.37504 E | RRS James Cook JC030 |
1102110 | CTD or STD cast | 2009-01-07 05:19:36 | 57.7132 S, 13.4878 E | RRS James Cook JC030 |
1253264 | Water sample data | 2009-01-07 07:31:00 | 57.71327 S, 13.48768 E | RRS James Cook JC030 |
1102122 | CTD or STD cast | 2009-01-07 17:28:29 | 57.8961 S, 11.8957 E | RRS James Cook JC030 |
2113547 | Water sample data | 2009-01-07 19:48:41 | 57.896 S, 11.59938 E | RRS James Cook JC030 |
1253276 | Water sample data | 2009-01-07 19:49:00 | 57.896 S, 11.59938 E | RRS James Cook JC030 |
1102134 | CTD or STD cast | 2009-01-08 06:26:42 | 58.0668 S, 9.6609 E | RRS James Cook JC030 |
1253288 | Water sample data | 2009-01-08 08:42:00 | 58.0668 S, 9.66093 E | RRS James Cook JC030 |
1102146 | CTD or STD cast | 2009-01-08 18:29:04 | 58.3312 S, 7.7594 E | RRS James Cook JC030 |
1253307 | Water sample data | 2009-01-08 20:13:00 | 58.33122 S, 7.75943 E | RRS James Cook JC030 |
2113559 | Water sample data | 2009-01-08 20:13:14 | 58.33122 S, 7.75943 E | RRS James Cook JC030 |
1102171 | CTD or STD cast | 2009-01-09 05:51:02 | 58.4162 S, 5.8259 E | RRS James Cook JC030 |
1253319 | Water sample data | 2009-01-09 07:58:00 | 58.41657 S, 5.82603 E | RRS James Cook JC030 |
1102183 | CTD or STD cast | 2009-01-09 21:14:20 | 58.8172 S, 2.8575 E | RRS James Cook JC030 |
2113560 | Water sample data | 2009-01-09 23:35:58 | 58.81717 S, 2.85753 E | RRS James Cook JC030 |
1253320 | Water sample data | 2009-01-09 23:36:00 | 58.81717 S, 2.85753 E | RRS James Cook JC030 |
1102195 | CTD or STD cast | 2009-01-10 12:06:31 | 59.213 S, 0.1162 W | RRS James Cook JC030 |
1253332 | Water sample data | 2009-01-10 14:20:00 | 59.21304 S, 0.11619 W | RRS James Cook JC030 |