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Metadata Report for BODC Series Reference Number 860602

Metadata Summary

Data Description

Data Category CTD or STD cast
Instrument Type
Neil Brown MK3 CTD  CTD; water temperature sensor; salinity sensor; dissolved gas sensors
SeaTech transmissometer  transmissometers
Chelsea Technologies Group Aquatracka fluorometer  fluorometers
Chelsea Technologies Group 2-pi PAR irradiance sensor  radiometers
Instrument Mounting research vessel
Originating Country United Kingdom
Originator Prof John Simpson
Originating Organization University of Wales, Bangor School of Ocean Sciences (now Bangor University School of Ocean Sciences)
Processing Status banked
Online delivery of data Download available - Ocean Data View (ODV) format
Project(s) Land Ocean Interaction Study (LOIS)

Data Identifiers

Originator's Identifier CP9
BODC Series Reference 860602

Time Co-ordinates(UT)

Start Time (yyyy-mm-dd hh:mm) 1996-07-12 01:44
End Time (yyyy-mm-dd hh:mm) -
Nominal Cycle Interval 2.0 decibars

Spatial Co-ordinates

Latitude 56.51200 N ( 56° 30.7' N )
Longitude 9.11350 W ( 9° 6.8' W )
Positional Uncertainty 0.0 to 0.01 n.miles
Minimum Sensor or Sampling Depth 2.97 m
Maximum Sensor or Sampling Depth 476.05 m
Minimum Sensor or Sampling Height 6.55 m
Maximum Sensor or Sampling Height 479.63 m
Sea Floor Depth 482.6 m
Sea Floor Depth Source DATAHEAD
Sensor or Sampling Distribution Variable common depth - All sensors are grouped effectively at the same depth, but this depth varies significantly during the series
Sensor or Sampling Depth Datum Instantaneous - Depth measured below water line or instantaneous water body surface
Sea Floor Depth Datum Instantaneous - Depth measured below water line or instantaneous water body surface


BODC CODERankUnitsTitle
ATTNZR011per metreAttenuation (red light wavelength) per unit length of the water body by transmissometer
CPHLPR011Milligrams per cubic metreConcentration of chlorophyll-a {chl-a CAS 479-61-8} per unit volume of the water body [particulate >unknown phase] by in-situ chlorophyll fluorometer
DOXYPR011Micromoles per litreConcentration of oxygen {O2 CAS 7782-44-7} per unit volume of the water body [dissolved plus reactive particulate phase] by in-situ Beckmann probe
IRRDPP011MicroEinsteins per square metre per secondDownwelling 2-pi scalar irradiance as photons of electromagnetic radiation (PAR wavelengths) in the water body by 2-pi scalar radiometer
OXYSBB011PercentSaturation of oxygen {O2 CAS 7782-44-7} in the water body [dissolved plus reactive particulate phase] by in-situ Beckmann probe and computation from concentration using Benson and Krause algorithm
POATCV011per metrePotential attenuance (unspecified wavelength) per unit length of the water body by transmissometer and computation using P-EXEC algorithm
POTMCV011Degrees CelsiusPotential temperature of the water body by computation using UNESCO 1983 algorithm
PRESPR011DecibarsPressure (spatial coordinate) exerted by the water body by profiling pressure sensor and correction to read zero at sea level
PSALST011DimensionlessPractical salinity of the water body by CTD and computation using UNESCO 1983 algorithm
SIGTPR011Kilograms per cubic metreSigma-theta of the water body by CTD and computation from salinity and potential temperature using UNESCO algorithm
TEMPST011Degrees CelsiusTemperature of the water body by CTD or STD

Definition of Rank

  • Rank 1 is a one-dimensional parameter
  • Rank 2 is a two-dimensional parameter
  • Rank 0 is a one-dimensional parameter describing the second dimension of a two-dimensional parameter (e.g. bin depths for moored ADCP data)

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

Neil Brown MK3 CTD

The Neil Brown MK3 conductivity-temperature-depth (CTD) profiler consists of an integral unit containing pressure, temperature and conductivity sensors with an optional dissolved oxygen sensor in a pressure-hardened casing. The most widely used variant in the 1980s and 1990s was the MK3B. An upgrade to this, the MK3C, was developed to meet the requirements of the WOCE project.

The MK3C includes a low hysteresis, titanium strain gauge pressure transducer. The transducer temperature is measured separately, allowing correction for the effects of temperature on pressure measurements. The MK3C conductivity cell features a free flow, internal field design that eliminates ducted pumping and is not affected by external metallic objects such as guard cages and external sensors.

Additional optional sensors include pH and a pressure-temperature fluorometer. The instrument is no longer in production, but is supported (repair and calibration) by General Oceanics.


These specification apply to the MK3C version.

Pressure Temperature Conductivity

6500 m

3200 m (optional)

-3 to 32°C 1 to 6.5 S cm-1

0.0015% FS

0.03% FS < 1 msec


0.003°C < 30 msec

0.0001 S cm-1

0.0003 S cm-1 < 30 msec

Further details can be found in the specification sheet.

Aquatracka fluorometer

The Chelsea Instruments Aquatracka is a logarithmic response fluorometer. It uses a pulsed (5.5 Hz) xenon light source discharging between 320 and 800 nm through a blue filter with a peak transmission of 420 nm and a bandwidth at half maximum of 100 nm. A red filter with sharp cut off, 10% transmission at 664 nm and 678 nm, is used to pass chlorophyll-a fluorescence to the sample photodiode.

The instrument may be deployed either in a through-flow tank, on a CTD frame or moored with a data logging package.

Further details can be found in the manufacturer's specification sheet.

Chelsea Technologies Photosynthetically Active Radiation (PAR) Irradiance Sensor

This sensor was originally designed to assist the study of marine photosynthesis. With the use of logarithmic amplication, the sensor covers a range of 6 orders of magnitude, which avoids setting up the sensor range for the expected signal level for different ambient conditions.

The sensor consists of a hollow PTFE 2-pi collector supported by a clear acetal dome diverting light to a filter and photodiode from which a cosine response is obtained. The sensor can be used in moorings, profiling or deployed in towed vehicles and can measure both upwelling and downwelling light.


Operation depth 1000 m
Range 2000 to 0.002 µE m-2 s-1
Angular Detection Range ± 130° from normal incidence
Relative Spectral Sensitivity

flat to ± 3% from 450 to 700 nm

down 8% of 400 nm and 36% at 350 nm

Further details can be found in the manufacturer's specification sheet.

SeaTech Transmissometer


The transmissometer is designed to accurately measure the the amount of light transmitted by a modulated Light Emitting Diode (LED) through a fixed-length in-situ water column to a synchronous detector.


  • Water path length: 5 cm (for use in turbid waters) to 1 m (for use in clear ocean waters).
  • Beam diameter: 15 mm
  • Transmitted beam collimation: <3 milliradians
  • Receiver acceptance angle (in water): <18 milliradians
  • Light source wavelength: usually (but not exclusively) 660 nm (red light)


The instrument can be interfaced to Aanderaa RCM7 current meters. This is achieved by fitting the transmissometer in a slot cut into a customized RCM4-type vane.

A red LED (660 nm) is used for general applications looking at water column sediment load. However, green or blue LEDs can be fitted for specilised optics applications. The light source used is identified by the BODC parameter code.

Further details can be found in the manufacturer's Manual.

RRS Challenger 128A CTD Data Documentation

Components of the CTD data set

The CTD data set for cruise CH128A consists of 88 vertical profiles. The data parameters are temperature, salinity, upwelling and downwelling irradiance, dissolved oxygen, chlorophyll and optical attenuance.

Data Acquisition and On-Board Processing


The CTD profiles were taken with an RVS Neil Brown Mk3B CTD incorporating a pressure sensor, conductivity cell, platinum resistance thermometer and a Beckmann dissolved oxygen sensor. Water was forced over the oxygen membrane by a SeaBird submersible pump. The CTD unit was mounted vertically in the centre of a protective cage approximately 1.5m square. Attached to the bars of the frame were a Chelsea Instruments Aquatracka fluorometer and a SeaTech red light (661 nm) transmissometer with a 25cm path length.

Above the frame was a General Oceanics rosette sampler fitted with twelve 10-litre Niskin water bottles. The bases of the bottles were 0.75 metres above the pressure head and their tops 1.55 metres above it. One bottle was fitted with a holder for twin digital reversing thermometers mounted 1.38 metres above the CTD temperature sensor.

Above the rosette was a PML 2pi PAR (photosynthetically available radiation) sensor pointing upwards to measure downwelling scalar irradiance. A second 2pi PAR sensor, pointing downwards, was fitted to the bottom of the cage to measure upwelling scalar irradiance. It should be noted that these sensors were vertically separated by 2 metres with the upwelling sensor 0.2 metres below the pressure head and the downwelling sensor 1.75 metres above it.

No account has been taken of rig geometry in the compilation of the CTD data set. However, all water bottle sampling depths have been corrected for rig geometry and represent the true position of the midpoint of the water bottle in the water column.

Data Acquisition

On each cast, the CTD was lowered continuously at 0.5 to 1.0 ms-1 to the closest comfortable proximity to the sea floor. The upcast was done in stages between the bottle firing depths.

Data were logged by the RVS ABC data logging system. Output channels from the deck unit were logged at 32 Hz by a microprocessor interface (the Level A) which passed time-stamped averaged cycles at 1 Hz to a Sun workstation (the Level C) via a buffering system (the Level B).

On-Board Data Processing

The raw data comprised ADC counts. These were converted into engineering units (volts for PAR meters, fluorometer and transmissometer; ml/l for oxygen; mmho/cm for conductivity; °C for temperature; decibars for pressure) by the application of laboratory determined calibrations. Salinity (Practical Salinity Units as defined in Fofonoff and Millard, 1983) was calculated from the conductivity ratios (conductivity/42.914) and a time lagged temperature using the function described in UNESCO Report 37 (1981).

The data set was submitted to BODC in this form on Quarter Inch Cartridge tapes in RVS internal format for post-cruise processing and data banking.

Post-Cruise Processing and Calibration at BODC


The data were converted into the BODC internal format (PXF) to allow the use of in-house software tools, notably the workstation graphics editor. In addition to reformatting, the transfer program applied the following modifications to the data:

  • Dissolved oxygen was converted from ml/l to µM by multiplying the values by 44.66.
  • Transmissometer voltages were corrected to the manufacturer's specified voltage by ratio using transmissometer air readings taken during the cruise.
  • Transmissometer voltages were converted to percentage transmission by multiplying them by a factor of 20.
  • The transmissometer data were converted to attenuance using the algorithm:-
attenuance (m-1) = -4 loge (% transmission/100)


Reformatted CTD data were transferred onto a high-speed graphics workstation. Using a custom in-house graphics editor, downcasts and upcasts were differentiated and the limits of the downcasts and upcasts were manually flagged.

Spikes on all the downcast channels were manually flagged. No data values were edited or deleted; flagging was achieved by modification of the associated quality control flag.

The pressure ranges over which the bottle samples had been collected were logged by manual interaction with the software. Usually, clusters of points recorded while the CTD was held stationary were used to determine this. These pressure ranges were subsequently used, in conjunction with a geometrical correction for the position of the water bottles with respect to the CTD pressure transducer, to determine the pressure range of data to be averaged for calibration values.

For this cruise, the RVS Neil Brown Mk 3B CTD system was equipped with a SeaBird pump, which sent water at a constant rate through the housing containing the existing Beckman oxygen electrode. Problems associated with the plumbing of the pump to the oxygen probe resulted in many profiles only recording good oxygen data on upcasts. To overcome this, the upcast data for oxygen, temperature and salinity channels were flagged to remove any spikes. The downcast oxygen values loaded into ORACLE were then replaced where necessary by upcast oxygen data using isopycnal (rather than pressure) matching to determine the replacement values to be used.

Once screened on the workstation, the CTD downcasts were loaded into a database under the ORACLE Relational Database Management System.


With the exception of pressure, calibrations were done by comparison of CTD data against measurements made on water bottle samples or from the reversing thermometers mounted on the water bottles as in the case of temperature. In general, values were averaged from the CTD downcasts but where visual inspection of the data showed significant hysteresis values were manually extracted from the CTD upcasts.

All calibrations described here have been applied to the data except for the calibration to express attenuance in terms of suspended matter concentration.


The pressure offset was determined by looking at the pressures recorded when the CTD was clearly logging in air (readily apparent from the conductivity channel). The following correction was calculated from 14 values:

Pcorr = P - 0.16

The CTD temperature was compared with readings from the digital reversing thermometers attached to the water bottles. Normal BODC practice is to use this comparison as a check to ensure against CTD malfunction rather than a calibration because the Neil Brown CTD thermometer is considered more accurate than the SIS digital reversing thermometers.

However, the CTD used on this cruise had not been accurately calibrated by RVS and the temperature data supplied to BODC were based on a nominal calibration. Consequently, the reversing thermometer data were used to recalibrate the CTD temperature data and the following correction has been applied:

Tcorr = T - 0.032 (standard deviation 0.006)

During screening an offset was noted in the salinity trace. This was attributed to the conductivity cell contamination. The following correction has been applied:

CP57 0.041 PSU added between 158.0 db and 355.6 db

Salinity was calibrated against water bottle samples measured on the Guildline 55358 AutoLab Salinometer during the cruise. Samples were collected in glass bottles filled to just below the neck and sealed with plastic stoppers. Batches of samples were left for at least 24 hours to reach thermal equilibrium in the lab containing the salinometer before analysis.

The correction determined for this cruise was:

Scorr = S + 0.088 (standard deviation 0.003)
Upwelling and Downwelling Irradiance

The PAR voltages were converted to W m-2 using the following equations determined in August 1995 supplied by RVS.

Upwelling (#10): PAR (W m-2) = exp (-4.98*volts + 6.565)/100.0
Downwelling (#12): PAR (W m-2) = exp (-4.92*volts + 6.506)/100.0

Note that these sensors have been empirically calibrated to obtain a conversion from W/m2 into µE/m2/s, which may be effected by multiplying the data given by 3.75.

Optical Attenuance and Suspended Matter

The air correction applied for this cruise was based on an air reading obtained during the cruise (4.736V). The manufacturer's voltage for the instrument used (SN079D) was 4.744V.

Large volume samples were taken for gravimetric analysis of the suspended particulate matter concentration. These were used to generate calibrations that expressed attenuance in terms of suspended particulate matter concentrations.

Robin McCandliss (University of Wales, Bangor) undertook this work, under the supervision of Sarah Jones. The optimal approach developed was to base the calibration on samples taken from near the seabed (i.e. those with the minimum content of fluorescent material). The data from all SES cruises where SPM samples were taken were pooled to derive the calibration equation:

SPM (mg/l) = (2.368*Atten) - 0.801 (R2 = 79%)

This calibration is valid for all SES cruises after and including cruise Charles Darwin CD93A. The clear water attenuance predicted by the equation is 0.336 per m, which agrees well with literature values.

No attempt has been made to replace attenuance by SPM concentration in the final data set. However, users may use the equation above to compute an estimated SPM channel from attenuance when required.


200ml of seawater collected at several depths on each cast were filtered and the papers frozen for acetone extraction and fluorometric analysis on land. A relatively small number of samples were taken on CH128B. Consequently, the data from both legs of CH128 were pooled for the calibration.

The extracted chlorophyll concentrations (range 0.1 to 2.94 mg m-3) were regressed against the corresponding fluorometer voltages, giving the following calibration which has been applied to the data:

Chlorophyll (mg m-3) = exp (1.33 * volts - 2.75) (R2 = 56.7%, n = 176)
Dissolved Oxygen

Dissolved oxygen concentrations were determined by micro-Winkler titration of seawater samples taken from a range of depths on several CTD casts. These values were compared with oxygen readings derived from the oxygen sensor membrane current, oxygen sensor temperature, sea temperature and salinity values recorded by the CTD on the upcast. Hilary Wilson (University of Wales, Bangor), under the supervision of Dr. Paul Tett, carried out this work. The following equation was supplied to BODC and the coefficients A and B were applied to the data:

[O2] = (A*C + B)* S' ml/l
where A = 2.1507689 (casts CP1-CP80) or 3.39847069 (casts CP81-CP90)
  C = oxygen sensor current (µA)
  B = -0.1448435 (casts CP1-CP80) or -1.2152591 (casts CP81-CP90)
  S'= oxygen saturation concentration (a function of water temperature and salinity).

Finally, the data were converted to µM by multiplication by 44.66.

The calibration coefficients used for casts CP1-CP80 were derived using the pooled data from 4 of the profiles from which bottle oxygen samples were taken. The calibration for CP81-CP90 was based on data from cast CP81. Individual calibrations were derived for each of these profiles. These are included below for reference. However, please note that the whole cruise coefficients given above were applied to all profiles in the database.

CP5  2.33219833  -0.2623257
CP64  2.15424386  -0.1062559
CP65  2.34197522  -0.2343615
CP69  2.03641103  -0.0567426
CP81  3.39847069  -1.2152591

Considerable manipulation of the oxygen data, such as the substitution of downcast data by isopycnal-matched upcast data, was required to produce the oxygen data channel in the final data set. This, combined with the uncertainties involved in the calibration of oxygen data, might mean that some users would wish to re-examine the oxygen processing. To facilitate this, BODC have systematically archived the raw data (including oxygen current and temperature) from both upcasts and downcasts. These data are available on request.

During the visual inspection of the oxygen data from this cruise it was noticed that there was a significant difference between the downcast and upcast data (sometimes 1-200 µM different at the surface). This difference was far greater than other SES cruises and was present, though it diminished in magnitude with depth, for the whole cast. Consequently, all the data in the final data set have been derived from the upcast rather than the odd 'patch' as in CH121B and CH126B. Looking at the data leaves a nagging doubt that the oxygen sensor was being very slow to equilibrate and there is no concrete evidence that it had reached equilibrium by the start of the upcast. Users are therefore recommended to use the CTD oxygen data from this cruise with a degree of caution.

Data Reduction

Once all screening and calibration procedures were completed, the data set was binned to 2 db (casts deeper than 100 db) or 1 db (casts shallower than 100 db). The binning algorithm excluded any data points flagged suspect and attempted linear interpolation over gaps up to 3 bins wide. If any gaps larger than this were encountered, the data in the gaps were set null.

Oxygen saturation has been computed using the algorithm of Benson and Krause (1984).

Data Warnings

There is strong evidence that the oxygen sensor was exceptionally slow to equilibrate. Although the data presented in the final data set have been taken from the upcast, users are recommended to use the oxygen data from this cruise with caution.


Benson B.B. and Krause D. jnr. 1984. The concentration and isotopic fractionation of oxygen dissolved in fresh water and sea water in equilibrium with the atmosphere. Limnol. Oceanogr. 29 pp.620-632.

Fofonoff N.P., and Millard Jr., R.C. 1982. Algorithms for Computation of Fundamental Properties of Seawater. UNESCO Technical Papers in Marine Science 44.

Project Information

Land Ocean Interaction Study (LOIS)


The Land Ocean Interaction Study (LOIS) was a Community Research Project of the Natural Environment Research Council (NERC). The broad aim of LOIS was to gain an understanding of, and an ability to predict, the nature of environmental change in the coastal zone around the UK through an integrated study from the river catchments through to the shelf break.

LOIS was a collaborative, multidisciplinary study undertaken by scientists from NERC research laboratories and Higher Education institutions. The LOIS project was managed from NERC's Plymouth Marine Laboratory.

The project ran for six years from April 1992 until April 1998 with a further modelling and synthesis phase beginning in April 1998 and ending in April 2000.

Project Structure

LOIS consisted of the following components:

  • River-Atmosphere-Coast Study (RACS)
    • RACS(A) - Atmospheric sub-component
    • RACS(C) - Coasts sub-component
    • RACS(R) - Rivers sub-component
    • BIOTA - Terrestrial salt marsh study
  • Land Ocean Evolution Perspective Study (LOEPS)
  • Shelf-Edge Study (SES)
  • North Sea Modelling Study (NORMS)
  • Data Management (DATA)

Marine Fieldwork

Marine field data were collected between September 1993 and September 1997 as part of RACS(C) and SES. The RACS data were collected throughout this period from the estuaries and coastal waters of the UK North Sea coast from Great Yarmouth to the Tweed. The SES data were collected between March 1995 and September 1996 from the Hebridean slope. Both the RACS and SES data sets incorporate a broad spectrum of measurements collected using moored instruments and research vessel surveys.

Data Activity or Cruise Information


Cruise Name CH128A
Departure Date 1996-07-10
Arrival Date 1996-07-26
Principal Scientist(s)John H Simpson (University of Wales, Bangor School of Ocean Sciences)
Ship RRS Challenger

Complete Cruise Metadata Report is available here

Fixed Station Information

Fixed Station Information

Station NameLOIS (SES) Repeat Section R
CategoryOffshore route/traverse

LOIS (SES) Repeat Section R

Section R was one of four repeat sections sampled during the Land-Ocean Interaction Study (LOIS) Shelf Edge Study (SES) project between March 1995 and September 1996.

The CTD measurements collected at repeat section R, on the Hebridean Slope, lie within a box bounded by co-ordinates 56° 29.4' N, 9° 41.4' W at the southwest corner and 56° 32.4' N, 8° 55.8' W at the northeast corner.

Cruises occupying section R

Cruise Start Date End Date
Charles Darwin 91B 22/03/1995 02/04/1995
Charles Darwin 93A 07/05/1995 16/05/1995
Charles Darwin 93B 16/05/1995 30/05/1995
Tydeman SESAME-1 10/08/1995 11/09/1995
Challenger 121B 18/08/1995 01/09/1995
Challenger 121C 01/09/1995 10/09/1995
Challenger 123A 15/11/1995 29/11/1995
Challenger 123B 01/12/1995 15/12/1995
Challenger 124 08/01/1996 27/01/1996
Challenger 125A 31/01/1996 12/02/1996
Challenger 125B 13/02/1996 03/03/1996
Challenger 126B 27/04/1996 12/05/1996
Challenger 128A 10/07/1996 26/07/1996
Challenger 128B 26/07/1996 08/08/1996

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: LOIS (SES) Repeat Section R

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 IdentifierData CategoryStart date/timeStart positionCruise
847974CTD or STD cast1995-03-28 13:02:0056.49 N, 9.01017 WRRS Charles Darwin CD91B
852859CTD or STD cast1995-05-11 20:39:0056.51883 N, 9.2855 WRRS Charles Darwin CD93A
849213CTD or STD cast1995-05-20 08:35:0056.50067 N, 8.93217 WRRS Charles Darwin CD93B
848639CTD or STD cast1995-05-20 09:53:0056.50367 N, 8.99083 WRRS Charles Darwin CD93B
848640CTD or STD cast1995-05-20 11:09:0056.506 N, 9.04 WRRS Charles Darwin CD93B
849225CTD or STD cast1995-05-20 13:02:0056.505 N, 9.05933 WRRS Charles Darwin CD93B
848652CTD or STD cast1995-05-20 14:40:0056.50783 N, 9.10683 WRRS Charles Darwin CD93B
848664CTD or STD cast1995-05-20 15:58:0056.51533 N, 9.17183 WRRS Charles Darwin CD93B
849237CTD or STD cast1995-05-20 17:12:0056.51317 N, 9.232 WRRS Charles Darwin CD93B
848676CTD or STD cast1995-05-20 18:38:0056.516 N, 9.296 WRRS Charles Darwin CD93B
848688CTD or STD cast1995-05-20 20:54:0056.53067 N, 9.48833 WRRS Charles Darwin CD93B
849249CTD or STD cast1995-05-20 23:04:0056.538 N, 9.6765 WRRS Charles Darwin CD93B
848793CTD or STD cast1995-05-21 23:56:0056.51983 N, 9.285 WRRS Charles Darwin CD93B
849286CTD or STD cast1995-05-22 02:23:0056.51567 N, 9.28983 WRRS Charles Darwin CD93B
848800CTD or STD cast1995-05-22 04:04:0056.51633 N, 9.2895 WRRS Charles Darwin CD93B
848812CTD or STD cast1995-05-22 06:11:0056.51767 N, 9.29733 WRRS Charles Darwin CD93B
849342CTD or STD cast1995-05-22 08:44:0056.51733 N, 9.2925 WRRS Charles Darwin CD93B
848824CTD or STD cast1995-05-22 10:35:0056.51917 N, 9.29067 WRRS Charles Darwin CD93B
851217CTD or STD cast1995-08-22 14:52:0056.50667 N, 9.05967 WRRS Challenger CH121B
1287421Water sample data1995-08-22 15:07:0056.5066 N, 9.05972 WRRS Challenger CH121B
852128CTD or STD cast1995-09-03 20:42:0056.49917 N, 8.93417 WRRS Challenger CH121C
851936CTD or STD cast1995-09-03 21:40:0056.50483 N, 9.03733 WRRS Challenger CH121C
851948CTD or STD cast1995-09-03 22:18:0056.50583 N, 9.06167 WRRS Challenger CH121C
851961CTD or STD cast1995-09-03 23:13:0056.50967 N, 9.11833 WRRS Challenger CH121C
852141CTD or STD cast1995-09-04 00:07:0056.51517 N, 9.18467 WRRS Challenger CH121C
851973CTD or STD cast1995-09-04 01:21:0056.51867 N, 9.30033 WRRS Challenger CH121C
851997CTD or STD cast1995-09-04 20:42:0056.519 N, 9.29967 WRRS Challenger CH121C
854830CTD or STD cast1995-11-27 01:51:0056.51767 N, 9.2985 WRRS Challenger CH123A
855685CTD or STD cast1995-12-07 05:34:0056.52767 N, 9.288 WRRS Challenger CH123B
855697CTD or STD cast1995-12-07 07:23:0056.51767 N, 9.28667 WRRS Challenger CH123B
855765CTD or STD cast1995-12-07 14:26:0056.51717 N, 9.29483 WRRS Challenger CH123B
855704CTD or STD cast1995-12-07 15:19:0056.51767 N, 9.177 WRRS Challenger CH123B
855894CTD or STD cast1995-12-07 17:16:0056.52783 N, 9.10217 WRRS Challenger CH123B
854946CTD or STD cast1995-12-07 18:31:0056.51017 N, 9.05117 WRRS Challenger CH123B
855716CTD or STD cast1995-12-07 19:21:0056.50633 N, 9.03967 WRRS Challenger CH123B
855728CTD or STD cast1995-12-07 20:25:0056.5045 N, 8.93233 WRRS Challenger CH123B
855114CTD or STD cast1995-12-10 22:03:0056.53 N, 9.66833 WRRS Challenger CH123B
855925CTD or STD cast1995-12-11 16:28:0056.51483 N, 9.296 WRRS Challenger CH123B
855126CTD or STD cast1995-12-11 17:59:0056.51533 N, 9.29383 WRRS Challenger CH123B
855882CTD or STD cast1995-12-11 19:17:0056.51583 N, 9.29567 WRRS Challenger CH123B
855507CTD or STD cast1995-12-11 21:06:0056.5145 N, 9.304 WRRS Challenger CH123B
856431CTD or STD cast1996-02-05 21:05:0056.501 N, 8.9325 WRRS Challenger CH125A
856105CTD or STD cast1996-02-05 21:50:0056.5035 N, 8.98833 WRRS Challenger CH125A
856117CTD or STD cast1996-02-05 22:34:0056.50583 N, 9.041 WRRS Challenger CH125A
856418CTD or STD cast1996-02-07 03:28:0056.51633 N, 9.30083 WRRS Challenger CH125A
856130CTD or STD cast1996-02-07 05:11:0056.51833 N, 9.1805 WRRS Challenger CH125A
856142CTD or STD cast1996-02-07 06:22:0056.5125 N, 9.11367 WRRS Challenger CH125A
856399CTD or STD cast1996-02-07 07:12:0056.50283 N, 9.0575 WRRS Challenger CH125A
857852CTD or STD cast1996-02-22 05:28:0056.49983 N, 8.92683 WRRS Challenger CH125B
1289581Water sample data1996-02-22 05:39:0056.49986 N, 8.92676 WRRS Challenger CH125B
1699242Water sample data1996-02-22 05:39:0056.49986 N, 8.92676 WRRS Challenger CH125B
1866889Water sample data1996-02-22 05:39:0056.49986 N, 8.92676 WRRS Challenger CH125B
856953CTD or STD cast1996-02-22 06:42:0056.50333 N, 9.042 WRRS Challenger CH125B
1289593Water sample data1996-02-22 06:56:0056.50341 N, 9.04199 WRRS Challenger CH125B
1699254Water sample data1996-02-22 06:56:0056.50341 N, 9.04199 WRRS Challenger CH125B
1866890Water sample data1996-02-22 06:56:0056.50341 N, 9.04199 WRRS Challenger CH125B
857784CTD or STD cast1996-02-22 07:23:0056.50633 N, 9.061 WRRS Challenger CH125B
1289600Water sample data1996-02-22 07:34:0056.50639 N, 9.06092 WRRS Challenger CH125B
1699266Water sample data1996-02-22 07:34:0056.50639 N, 9.06092 WRRS Challenger CH125B
1866908Water sample data1996-02-22 07:34:0056.50639 N, 9.06092 WRRS Challenger CH125B
856965CTD or STD cast1996-02-22 08:18:0056.512 N, 9.1215 WRRS Challenger CH125B
1289612Water sample data1996-02-22 08:33:0056.51203 N, 9.12148 WRRS Challenger CH125B
1699278Water sample data1996-02-22 08:33:0056.51203 N, 9.12148 WRRS Challenger CH125B
1866921Water sample data1996-02-22 08:33:0056.51203 N, 9.12148 WRRS Challenger CH125B
856977CTD or STD cast1996-02-22 11:30:0056.51483 N, 9.181 WRRS Challenger CH125B
1289624Water sample data1996-02-22 11:49:0056.51491 N, 9.18092 WRRS Challenger CH125B
1699291Water sample data1996-02-22 11:49:0056.51491 N, 9.18092 WRRS Challenger CH125B
1866933Water sample data1996-02-22 11:49:0056.51491 N, 9.18092 WRRS Challenger CH125B
857502CTD or STD cast1996-02-22 13:27:0056.5165 N, 9.302 WRRS Challenger CH125B
1289636Water sample data1996-02-22 13:58:0056.51646 N, 9.30205 WRRS Challenger CH125B
1699309Water sample data1996-02-22 13:58:0056.51646 N, 9.30205 WRRS Challenger CH125B
1866945Water sample data1996-02-22 13:58:0056.51646 N, 9.30205 WRRS Challenger CH125B
858505CTD or STD cast1996-05-04 14:18:0056.5325 N, 9.69267 WRRS Challenger CH126B
859926CTD or STD cast1996-05-04 16:34:0056.52633 N, 9.49333 WRRS Challenger CH126B
859938CTD or STD cast1996-05-04 19:00:0056.5165 N, 9.296 WRRS Challenger CH126B
859951CTD or STD cast1996-05-04 20:29:0056.51683 N, 9.24267 WRRS Challenger CH126B
858517CTD or STD cast1996-05-04 22:10:0056.515 N, 9.184 WRRS Challenger CH126B
859963CTD or STD cast1996-05-04 23:38:0056.51133 N, 9.11667 WRRS Challenger CH126B
859361CTD or STD cast1996-05-05 00:45:0056.50767 N, 9.06683 WRRS Challenger CH126B
859373CTD or STD cast1996-05-05 01:33:0056.50383 N, 9.04017 WRRS Challenger CH126B
859385CTD or STD cast1996-05-05 02:19:0056.50483 N, 8.991 WRRS Challenger CH126B
859397CTD or STD cast1996-05-05 03:09:0056.50133 N, 8.93333 WRRS Challenger CH126B
859570CTD or STD cast1996-05-07 03:34:0056.518 N, 9.29967 WRRS Challenger CH126B
859582CTD or STD cast1996-05-07 05:02:0056.52 N, 9.29967 WRRS Challenger CH126B
858799CTD or STD cast1996-05-07 10:48:0056.51283 N, 9.2975 WRRS Challenger CH126B
860595CTD or STD cast1996-07-11 22:37:0056.50183 N, 8.933 WRRS Challenger CH128A
1292460Water sample data1996-07-11 22:42:0056.50187 N, 8.93308 WRRS Challenger CH128A
860177CTD or STD cast1996-07-11 23:32:0056.50617 N, 9.04617 WRRS Challenger CH128A
1292552Water sample data1996-07-11 23:50:0056.50611 N, 9.0461 WRRS Challenger CH128A
861027CTD or STD cast1996-07-12 00:25:0056.50767 N, 9.0615 WRRS Challenger CH128A
1292668Water sample data1996-07-12 00:45:0056.50771 N, 9.06142 WRRS Challenger CH128A
1292712Water sample data1996-07-12 02:00:0056.512 N, 9.11353 WRRS Challenger CH128A
860189CTD or STD cast1996-07-12 03:24:0056.5185 N, 9.29167 WRRS Challenger CH128A
1292030Water sample data1996-07-12 03:56:0056.51842 N, 9.29173 WRRS Challenger CH128A
861297CTD or STD cast1996-07-28 18:33:0056.51783 N, 9.3045 WRRS Challenger CH128B
861156CTD or STD cast1996-07-28 22:46:0056.51817 N, 9.30833 WRRS Challenger CH128B
861304CTD or STD cast1996-07-29 00:29:0056.52517 N, 9.3195 WRRS Challenger CH128B