Metadata Report for BODC Series Reference Number 1003671


Metadata Summary

Data Description

Data Category CTD or STD cast
Instrument Type
NameCategories
SeaTech transmissometer  transmissometers
Sea-Bird SBE 13 Dissolved Oxygen Sensor  dissolved gas sensors
Sequoia Laser In-Situ Sediment Size Transmissometer  transmissometers; water temperature sensor; in-situ particle sizers
Sea-Bird SBE 911plus CTD  CTD; water temperature sensor; salinity sensor
LI-COR LI-192 PAR sensor  radiometers
Turner Designs SCUFA II Submersible Fluorometer  fluorometers
Instrument Mounting lowered unmanned submersible
Originating Country United Kingdom
Originator Mr Phil Knight
Originating Organization Proudman Oceanographic Laboratory (now National Oceanography Centre, Liverpool)
Processing Status QC in progress
Online delivery of data Download not available
Project(s) Coastal Observatory
 

Data Identifiers

Originator's Identifier C004
BODC Series Reference 1003671
 

Time Co-ordinates(UT)

Start Time (yyyy-mm-dd hh:mm) 2006-12-15 15:25
End Time (yyyy-mm-dd hh:mm) -
Nominal Cycle Interval 0.5 decibars
 

Spatial Co-ordinates

Latitude 53.44700 N ( 53° 26.8' N )
Longitude 3.64433 W ( 3° 38.7' W )
Positional Uncertainty 0.05 to 0.1 n.miles
Minimum Sensor or Sampling Depth 1.73 m
Maximum Sensor or Sampling Depth 22.05 m
Minimum Sensor or Sampling Height -0.15 m
Maximum Sensor or Sampling Height 20.16 m
Sea Floor Depth 21.9 m
Sea Floor Depth Source -
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
 

Parameters

BODC CODERankUnitsTitle
ATTNMR011per metreAttenuation (red light wavelength) per unit length of the water body by 20 or 25cm path length transmissometer
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
FVLTWS011VoltsRaw signal (voltage) of instrument output by linear-response chlorophyll fluorometer
IRRDUV011MicroEinsteins per square metre per secondDownwelling vector irradiance as photons of electromagnetic radiation (PAR wavelengths) in the water body by cosine-collector radiometer
NVLTLS011VoltsRaw signal (voltage) of instrument output by LISST scatterometer
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
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
PSALCU011DimensionlessPractical salinity of the water body by CTD and computation using UNESCO 1983 algorithm and NO calibration against independent measurements
SIGTPR011Kilograms per cubic metreSigma-theta of the water body by CTD and computation from salinity and potential temperature using UNESCO algorithm
TEMPCC011Degrees CelsiusTemperature of the water body by CTD and verification against independent measurements
TVLTZR011VoltsRaw signal (voltage) of instrument output by red light transmissometer

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

Dissolved Oxygen

All data from this channel should be used with caution as the values measured were unrealistic during this and several other cruises. Readings taken by the probe indicated that the sensor was constantly saturated.


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 Electronics SBE13 Dissolved Oxygen Sensor

The SBE 13 was designed as an auxiliary sensor for Sea Bird SBE 9plus, but can fitted in custom instrumentation applications. When used with the SBE 9 Underwater Unit, a flow-through plenum improves the data quality, as the pumping water over the sensor membrane reduces the errors caused by oxygen depletion during the periods of slow or intermittent flushing and also reduces exposure to biofouling.

The output voltage is proportional to membrane current (oxygen current) and to the sensor element's membrane temperature (oxygen temperature), which is used for internal temperature compensation.

Two versions of the SBE 13 are available: the SBE 13Y uses a YSI polarographic element with replaceable membranes to provide in situ measurements up to 2000 m depth and the SBE 13B uses a Beckman polarographic element to provide in situ measurements up to 10500 m depth, depending on the sensor casing. This sensor includes a replaceable sealed electrolyte membrane cartridge.

The SBE 13 instrument has been out of production since 2001 and has been superseded by the SBE 43.

Specifications

Measurement range 0 to 15 mL L-1
Accuracy 0.1 mL L-1
Time response

2 s at 25°C

5 s at 0°C

Depth range

2000 m (SBE 13Y- housing in anodized aluminum)

6800 m (SBE 13B- housing in anodized aluminum)

105000 m (SBE 13B- housing in titanium)

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

Prince Madog Cruise PD37_06 CTD Instrumentation

The CTD unit was a Sea-Bird Electronics 911plus system (SN P23655-0620), with dissolved oxygen sensor. The rosette sampling system was equipped with 5 litre sampling bottles (manufactured by Ocean Test Equipmetn Inc.). In addition the CTD was fitted with a red (660 nm) beam transmissometer, a fluorometer, a Sequoia Scientific Laser In-Situ Scattering and Transmissometry (LISST) particle analyser and a LI-COR Underwater Quantum Sensor. The Sea-Bird sensors were last calibrated by the manufacturer in January 2004. The table below lists more detailed information about the various sensors.

Sensor Model Serial Number Calibration Date Comments
Pressure transducer Paroscientific Digiquartz 42A-105 76076 21/01/2004 -
Conductivity sensor SBE 4 2543 14/01/2004 -
Temperature sensor SBE 3 P4100 21/01/2004 -
Dissolved oxygen SBE 13 Beckman 130580 05/01/2004 -
Transmissometer 660nm SeaTech T1000 T1021 03/03/1998 20 cm path length
Fluorometer Turner SCUFA II 262 - -
LISST 25A 210 26/10/2006 -
LI-COR LI 192SA 33 - -
Temperature Logger SBE-35 0041 - -

The salinity samples from the CTD were analysed after the cruise using a Portasal salinometer that was calibrated to standard seawater.

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.

Turner Designs Self-Contained Underwater Fluorescence Apparatus (SCUFA)

The Turner Designs SCUFA is a submersible fluorometer for chlorophyll and dye tracing operations that has been designed to operate in a wide range of concentrations, environmental conditions as well as operational modes (profiling or moored deployments). The instrument includes an integrated temperature probe and software which allow for automatic correction of fluorescence data from temperature effects. The superior ambient light rejection eliminates the effects of sunlight and allows the SCUFA to be used in surface waters without the need for external pumps or light shields.

Each instrument can be customised to meet user requirements. Users can choose one of the following channels: chlorophyll a, cyanobacteria (phycocyanin or phycoerythrin pigments), rhodamine WT, fluorescein and turbidity. Instrument options include turbidity, internal data logging and automatic temperature correction.

Three versions of the SCUFA are available: SCUFA I, II and III. SCUFA I and II are used for chlorophyll a applications, while SCUFA III is used for Rhodamine WT. Models II and III include a turbidity channel that is not present on model I. The SCUFA has been out of production since 2008.

Specifications

Depth rating 600 m
Detector Photodiode
Temperature range -2 to 40°C
Maximum sampling rate

1Hz- digital

5 Hz- analog

Resolution

12 bit- digital

1.2 mV- analog

Dynamic Range
Fluorescence 4 orders of magnitude
Turbidity 3 orders of magnitude

The table below presents the specifications for the different channels.

Specifications Chlorophyll Cyanobacteria Rhodamine WT/Fluorescein
Light source Blue

Orange- PC

Blue- PE

Green
Excitation/Emission 460/685

595/670 (phycocyanin, PC)

528/573 (phycoerythrin, PE)

530/600 (rhodamine)

490/580 (fluorescein)

Minimum detection Limit
Fluorescence 0.02 µg L-1 150 cells mL-1 0.04 ppb
Turbidity 0.05 NTU 0.05 NTU 0.05 NTU

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

LI-COR LI-192 Underwater Quantum Sensor

The LI-192 Underwater Quantum Sensor is used to measure photosynthetic photon flux density and is cosine corrected. The sensor is often referred to as LI-192SA or LI-192SB (the LI-192SB model was superseded by LI-192SA). One of the main differences is that the LI-192SA model includes a built-in voltage output for interfacing with NexSens iSIC and SDL data loggers.

Sensor specifications, current at January 2012, are given in the table below. More information can be found in the manufacturer's LI-192SA andLI-192SB specification sheets.

Sensor Specifications

(Specifications apply to both models unless otherwise stated)

Absolute Calibration ± 5 % in air traceable to NBS.
Sensitivity Typically 3 µA per 1000 µmol s-1 m-2 for LI-192SB and 4 µA per 1000 µmol s-1 m-2 for LI-192SA in water.
Linearity Maximum deviation of 1 % up to 10,000 µmol s-1 m-2.
Stability < ± 2 % change over a 1 year period.
Response Time 10 µs.
Temperature Dependence ± 0.15 % per °C maximum.
Cosine Correction Optimized for both underwater and atmospheric use.
Azimuth < ± 1 % error over 360 ° at 45 ° elevation.
Detector High stability silicon photovoltaic detector (blue enhanced).
Sensor Housing Corrosion resistant metal with acrylic diffuser for both saltwater and freshwater applications. Waterproof to withstand 800 psi (5500 kPa) (560 meters).

SeaTech Transmissometer

Introduction

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.

Specifications

Notes

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.

Sequoia Laser In-situ Sediment Size Transmissometer (LISST)

The Sequoia LISST measures particle size distribution of suspended sediments by laser diffraction. This technique allows particles of various compositions to be measured with a single device and, because the particle volume is roughly of the same order for all sizes, the required dynamic range of the sensors is reduced compared with single-particle counters.

The instrument includes optics for producing a collimated laser beam, a detector array, electronics for signal amplification and processing, a data storage and scheduling computer and a battery system. The primary measurement is the scattering of laser light at a number of angles, which is mathematically inverted to give a grain size distribution, and also scaled to obtain the volume scattering function. The size distribution is presented as concentration in each of 32 logarithmically-spaced grain-size class bins. Optical transmission, water depth and temperature are recorded as supporting measurements.

Several models are available and although the principals of operation are the same, their specifications vary slightly. The specifications for model LISST-100 are provided below.

Specifications

Optical path length

5 cm (standard)

2.5 cm (optional)

Optical transmission 12 bit resolution
Particle size range

Type B: 1.25 to 250 micron diameter

Type C: 2.5 to 500 micron diameter

Resolution 32 size classes, log-spaced
VSF angle range 1.7 to 340 mrad
Maximum sample speed 4 size distributions per second (standard)
Temperature range -10 to 45 °C
Temperature resolution 0.01 °C
Pressure range 0 to 300 m
Pressure resolution 8 cm

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

Prince Madog Cruise PD37_06 CTD Processing

Sampling Strategy

A total of 4 CTD casts were performed during the cruise in Liverpool Bay. Rosette bottles were fired near-bed on 2 casts in order to obtain independent temperature and salinity samples, the results of which were sent to BODC. Water samples were taken at mid-depth on 3 casts and filtered. The filtrate was stored for trace metal analysis at the Department of Earth and Ocean Sciences, Liverpool University. Additionally, near-surface samples were filtered to determine suspended particulate matter by the School of Ocean Sciences, University of Wales Bangor. Some filtrate was also preserved by mecuric chloride for nutrient analysis by CEFAS.

Data Processing

Data were logged at 24 Hz onto a PC running SEASAVE, Sea-Bird's data acquisition software. The raw Sea-Bird data, configuration and bottle files were supplied to BODC for further processing.

Sea-Bird Processing

The raw CTD files were processed through the Sea-Bird SBE Data Processing software version 5.35. Binary (.DAT) files were converted to engineering units and ASCII format (.CNV) using the DATCNV program. Sea-Bird bottle files (.BTL), with information on pressure and other logged readings at the time of bottle firing, were also generated during the data conversion process.

Sea-Bird software program ALIGNCTD was run to advance conductivity by 0s and oxygen by 3s (within the typical range given in the Sea-Bird manual). No adjustment was made to the temperature channel as the fast sensor response time renders this unnecessary, according to the Sea-Bird literature.

To compensate for conductivity cell thermal mass effects, the data files were run through CELLTM, using alpha = 0.03, 1/beta = 7, typical values for this CTD model given in the Sea-Bird literature. After running WILD EDIT, FILTER was run on the pressure channel using the recommended time filter of 0.15 seconds. Next, a minimum CTD velocity of 0.0 m s-1 was used for LOOP EDIT in order to exclude scans where the CTD was travelling backwards due to ship's heave. Salinity, density and oxygen concentration were then calculated and added to the output files using the DERIVE program. The files were then averaged to 0.5 second intervals using BINAVERAGE.

Reformatting

The data were converted from ASCII format into BODC internal format (QXF). The following table shows the mapping of variables within the original files to appropriate BODC parameter codes:

Originator's Variable Units Description BODC Parameter Code Units Comments
Pressure dbar Pressure exerted by the water body PRESPR01 dbar Calibrated
Conductivity S m-1 Electrical conductivity of the water body by CTD CNDCST01 S m-1 Not banked by BODC. These data are used as an intermediate step in calculation of PSALCU01
Oxygen, Beackman/YSI ml l-1 Dissolved oxygen concentration from Beckman probe DOXYPR01 µmol l-1 ml l-1 * 44.66
Salinity - Practical salinity of the water body PSALCU01 - Uncalibrated
Temperature [ITS-90] °C Temperature of the water column by CTD TEMPCU01 °C Not banked by BODC. Data are un-calibrated. Used as source for TEMPCC01.
Voltage 2 Un-adjusted volts Voltage from CTD PAR sensor LVLTLD01 Un-adjusted volts Not banked by BODC. These data are used as source data for the calculation of IRRDUV01.
Voltage 3 Un-adjusted volts Beam transmissometer voltage TVLTCR01 Un-adjusted volts Not banked by BODC. These data are used as source data for the calculation of ATTNMR01
Voltage 4 Un-adjusted volts Voltage from CTD SCUFA Turner fluorometer. FVLTWS01 Un-adjusted volts -
Voltage 6 Un-adjusted volts LISST scatterometer voltage output NVLTLS01 Un-adjusted volts -
Voltage 7 Un-adjusted volts LISST transmissometer voltage output TVLTZR01 Un-adjusted volts -
- - Potential temperature of water body POTMCV01 °C Generated by BODC using UNESCO Report 38 (1981) algorithm with parameters PSALCC01 and TEMPCC01.
- - Sigma-theta SIGTPR01 Kg m-3 Generated by BODC using the Fofonoff and Millard (1982) algorithm
- - PAR IRRDUV01 µE m-2s-1 Generated by BODC from calibration of LVLTLD01
- - Beam Attenuation ATTNMR01 m-1 Generated by BODC from calibration of TVLTCR01
- - Temperature TEMPCC01 °C Generated by BODC from calibration of TEMPCU01
- - Oxygen saturation OXYSBB01 % Generated by BODC durinf transfer using the Benson and Krause (1984) algorithm.

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., 29(3), 620-632

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.

UNESCO, 1981. Background papers and supporting data on the International Equation of State of Seawater 1980. UNESCO Technical Papers in Marine Science No. 38, 192pp

Screening

Reformatted CTD data were transferred onto a graphics work station for visualisation using the in-house editor EDSERPLO. Downcasts and upcasts were differentiated and the limits manually flagged. No data values were edited or deleted. Flagging was achieved by modification of the associated quality control flag to 'M' for suspect values and 'N' for nulls.

Banking

Once quality control screening was complete, CTD downcasts for all casts were binned against pressure at 0.5 dbar increments. During binning, BODC exclude flagged data and generate interpolated values to fill in gaps in the increment sequence, where necessary. Finally, the CTD downcasts were banked.

Calibrations

Salinity

Only 2 independent salinity samples were collected during the cruise. This does not provide a large enough population to enable a direct calibration of the CTD salinity values. The calibration equation for cruise PD35_06 (calibrated salinity = CTD salinity * 1.0623 - 1.9758) was considered as an alternative. In order to determine whether this calibration could be applied to the data, the mean salinity offset (independent salinity - CTD salinity) for PD37_06 was compared with that from cruise PD35_06. The mean offset for PD37_06 is -0.0186 with a standard deviation of 0.0199. This compares to a mean offset for PD35_06 of 0.0822 with a standard deviation of 0.0564. From these statistics and the small population of independent samples, it cannot be said with confidence that the calibration for PD35_06 is a suitable alternative and the user should exercise caution if applying it to the data. Because of the lack of a suitable calibration, uncalibrated salinity has been supplied.

Temperature

Two independent temperature values were obtained during the cruise. This does not provide a large enough population to enable a direct comparison against pressure and CTD temperature. The mean offset (independent temperature - CTD temperature) was calculated as -0.00415 with a standard deviation of 0.0009, compared to a mean offset of -0.00345 and standard deviation of 0.0048 for cruise PD35_06. These offsets are very similar and neither are significantly different from zero at 95% confidence. Therefore, there was no adjustment to the CTD temperature resulting from the application of manufacturer's coefficients during initial processing.

Pressure

There were no casts where the CTD pressure was logging in air. No adjustments were made to the values resulting from application of manufacturer's coefficients during the intial processing.

Beam attenuation

Coefficients M and B were calculated, allowing calibration of the transmissometer with air readings taken during the cruise. M and B are calculated according to SBE Application Note No. 7:

M = (Tw/W0)*(A0-Y0)/(A1-Y1)
B= -M*Y1

Where Tw is the percent transmission for pure water for the instrument (92.98%); W0 is the voltage output in pure water (4.649 volts); A0 is the manufacturer's air voltage (4.661 volts); Y0 is the manufacturer's blocked path voltage (0.000 volts); A1 is the cruise maximum air voltage (4.553 volts); Y1 is the current blocked path voltage (0.0000 volts). For this cruise, M and B were calculated to be 20.4744 and 0, respectively.

M and B are then inserted into the following equations (from SBE Application Note No. 7) to obtain calibrated beam attenuation:

Light transmission [%] = (M * voltage output) + B
Beam attenuation coefficient c = - (1/z) * ln (light transmission [decimal])

Where M and B are the calibration coefficients, z is the transmissometer path length (0.2m), light transmission[decimal] is light transmission [%] divided by 100, c = beam attenuation (m-1)

LISST transmission and scattering

The data are currently uncalibrated. However, the voltages can be calibrated to give optical transmission, beam attenuation, total volume concentration and Sauter mean diameter according to the following manufacturer's constants and calculations:

Optical Transmission = b = (VT-VToff)/(VTO-VToff)
Beam attenuation = -ln(b)/0.025 - units are metres-1, assumes 25mm path
Total volume concentration = TV = cal*[((VS-VSoff)/b)-(VSO-VSoff)] - units are µl l-1
Sauter mean diameter = SMD = a*[TV/(-ln(b)] - units are µm

Where cal = total volume concentration calibration constant = 160, a = Sauter mean diameter calibration constant = 0.09, VSO = clearwater scattering output = 0.150V (see note below), VTO = clear water transmission output = 3.215V (see note below), VSoff = scattering output offset = 0.10V, VToff = transmission output offset = 0.10V. Measured outputs are scattering = VS and transmission = VT.

N.B. The clear water values quoted above are supplied by the manufacturer. Ideally these should be replaced by values determined by the LISST calibration cast, during which the instrument is placed in a tank of clean water. However, there is suspicion that these values may not be accurate. Instrument degradation would be expected to produce a gradual decrease in the transmission value coupled with an increase in the scattering values. This is not the case and there are abnormally high values for some cruises. Therefore, manufacturer's values have been quoted along with values measured by the instrument during previous cruises. Users are advised to use their own discretion in deciding which coefficients to apply.

Date Cruise VT0 VS0
24/02/2004 PD06_04 3.292 0.442
02/03/2004 PD07_04 3.266 0.447
29/03/2004 PD11_04 3.357 0.447
10/05/2004 PD18_04 3.867 0.867
20/07/2004 PD29_04 3.501 0.468
10/08/2004 PD32_04 3.730 0.701
28/10/2004 PD48_04 3.372 0.459
14/12/2004 PD52_04 3.330 0.428
30/01/2005 PD02_05/PD03_05 3.319 0.469
28/02/2005 PD07_05 3.280 0.465
05/04/2005 PD11_05 3.299 0.455
10/05/2005 PD18_05 3.365 0.460
14/06/2005 PD21_05 3.371 0.479
13/07/2005 PD25_05 3.415 0.486
16/08/2005 PD30_05 3.171 0.463
14/09/2005 PD34_05 3.156 0.471
26/10/2005 PD41_05 3.145 0.442
13/12/2005 PD48_05 2.957 0.463
05/02/2006 PD04_06/PD05_06 3.071 0.523
05/03/2006 PD09_06 3.156 0.611
04/04/2006 PD12_06 2.969 0.447
08/05/2006 PD16_06 2.904 0.446
12/12/2006 PD37_06 2.723 0.156

PAR

The LI-COR LI-192SA sensor number 33 was calibrated from raw voltages using the CEFAS supplied equation:


Project Information

Proudman Oceanographic Laboratory Coastal Observatory

The Coastal Observatory was established by Proudman Oceanographic Laboratory as a coastal zone real time observing and monitoring system. The main objective is to understand a coastal sea's response both to natural forcing and to the consequences of human activity. Near real-time measurements will be integrated with coupled models into a pre-operational coastal prediction system whose results will be displayed on the World Wide Web.

The Observatory is expected to grow and evolve as resources and technology allow, all the while building up long time series. A site selection pilot study was carried out in September 2001 and the Observatory became operational in August 2002.

The site is located in Liverpool Bay and is subject to typical coastal sea processes, with strong tides, occasional large storm surges and waves, freshwater input, stable and unstable stratification, high suspended sediment concentration and biogeochemical interaction. Measurements and monitoring will focus on the impacts of storms, variations in river discharge (especially the Mersey), seasonality and blooms in Liverpool Bay.

A variety of methods will be used to obtain measurements, including:

  1. Moored instruments for in situ time series of currents, temperature and salinity profiles, and surface waves and meteorology. It is hoped that turbidity and chlorophyll measurements will be made at another site as the Observatory progresses;
  2. The Cefas Smartbuoy for surface properties such as nutrients and chlorophyll, starting late 2002;
  3. R.V. Prince Madog to carry out spatial surveys and service moorings;
  4. Instrumented ferries for near surface temperature, salinity, turbidity, chlorophyll and nutrients. The first route will be Liverpool to Douglas, Isle of Man, starting late 2002;
  5. Drifters for surface currents and properties such as temperature and salinity, starting in 2004;
  6. Tide gauges, with sensors for meteorology, waves, temperature and salinity, where appropriate;
  7. Meteorological data from Bidston Observatory and Hilbre Island, HF radar and tide gauge sites;
  8. Shore-based HF radar measuring waves and surface currents out to a range of 50 km, starting in 2003;
  9. Satellite data, with infrared for sea surface temperature and visible for chlorophyll and suspended sediment.

The partners currently involved with the project are listed below:

A summary of Coastal Observatory cruises to date on R.V. Prince Madog is given in the table below:

Year No. of cruises Work summary
2001 1 Site selection and pilot study. 95 CTD casts.
2002 4 POL moorings deployed and serviced
Cefas Waverider and SmartBuoy deployed and serviced
103 CTD casts
2003 10 POL moorings serviced
Cefas Waverider and SmartBuoy serviced
341 CTD/LISST casts
2004 9 POL moorings serviced
Cefas Waverider and SmartBuoy serviced
347 CTD/LISST casts
2005 9 POL moorings serviced
Cefas Waverider and SmartBuoy serviced
268 CTD/LISST casts
2006 11 POL moorings serviced
Cefas Waverider and SmartBuoy serviced
508 CTD/LISST casts
2007 9 POL moorings serviced
Cefas Waverider and SmartBuoy serviced
471 CTD/LISST casts
2008 9 POL moorings serviced
Cefas Waverider and SmartBuoy serviced
260 CTD/LISST casts
2009 7 POL moorings serviced
Cefas Waverider and SmartBuoy serviced
213 CTD/LISST casts
2010 8 POL moorings serviced
Cefas Waverider and SmartBuoy serviced
268 CTD/LISST casts
2011 6 POL moorings serviced
Cefas Waverider and SmartBuoy serviced
307 CTD/LISST casts to date, ongoing

Data Activity or Cruise Information

Cruise

Cruise Name PD37/06
Departure Date 2006-12-14
Arrival Date 2006-12-15
Principal Scientist(s)Phil J Knight (Proudman Oceanographic Laboratory)
Ship RV Prince Madog

Complete Cruise Metadata Report is available here


Fixed Station Information

Fixed Station Information

Station NameCoastal Observatory Site 21
CategoryOffshore location
Latitude53° 27.13' N
Longitude3° 38.48' W
Water depth below MSL25.0 m

Liverpool Bay Coastal Observatory Site 21

This station is one of 34 stations regularly visited by the Proudman Oceanographic Laboratory (POL) as part of the Liverpool Bay Coastal Observatory. The main activity at this site are CTD profiles (since August 2002) which are taken during each site visit. This station was also the secondary mooring site (also referred to as Site B) for the Coastal Observatory project between April 2005 and March 2010. After March 2010 the moorings were moved to site 20. The station lies within a box of mean water depth 24 m with the following co-ordinates:

Box Corner Latitude (+ve North) Longitude (+ve East)
North-west corner 53.46028 -3.658
South-east corner 53.44249 -3.6105

The position of this station relative to the other POL Coastal Observatory sites can be seen from the figure below.

BODC image

Mooring Deployment History

2010

Rig Type Typical Instruments Rig IDs Comment
Frame ADCP, CTD, OBS, Telemetry ADCP 1088, 1092, 1096, 1100, 1104, 1107, 1111 January - December
SmartBuoy CT, FL, OBS, BD 1087, 1091, 1095, 1099, 1103, 1110, 1115 January - December

2009

Rig Type Typical Instruments Rig IDs Comment
Frame ADCP, CTD, OBS, Telemetry ADCP 1057, 1065, 1069, 1072, 1076, 1080, 1084 January - December
SmartBuoy CT, FL, OBS, BD 1056, 1064, 1068, 1075, 1079, 1083 January - December

2008

Rig Type Typical Instruments Rig IDs Comment
Frame ADCP, CTD, OBS, Telemetry ADCP 1026, 1030, 1033, 1038, 1053 January - December
SmartBuoy CT, FL, OBS, BD LB2_023/1025, LB2_024/1029, LB2_025/1034, LB2_026/1037, LB2_029/1052 January - December

2007

Rig Type Typical Instruments Rig IDs Comment
Frame ADCP, CTD, OBS, Telemetry ADCP 992, 999, 1002, 1007, 1012, 1019 January - December
SmartBuoy CT, FL, OBS, BD 991, LB2_016/998, LB2_017/1003, LB2_018/1006, LB2_019/1011, LB2_020/1015, LB2_021/1018, LB2_022/1022 January - December

2006

Rig Type Typical Instruments Rig IDs Comment
Frame ADCP, CTD, OBS, Telemetry ADCP 952, 960, 964, 968, 972, 976, 980, 984, 988 January - December
SmartBuoy CT, FL, OBS, BD LB2_006, LB2_007, LB2_008, LB2_009, LB2_010, LB2_011, LB2_012, LB2_013/983, LB2_014/987 January - December

2005

Rig Type Typical Instruments Rig IDs Comment
Frame ADCP, CTD, OBS 923, 927, 931, 936, 940, 943, 947, 950 January - December
SmartBuoy CT, FL, OBS, WMS LB2_001/926, LB2_002/930, LB2_003/935, LB2_004/939, LB2_005/946 May - December
Marker buoy CT 922 April - May

CTD Sampling History

Year Number of Cruises Total Casts per year
2011 5 5
2010 6 6
2009 7 18
2008 9 16
2007 8 17
2006 9 18
2005 9 14
2004 8 8
2003 9 9
2002 2 2

The CTD instrument package for these cruises was a Sea-Bird 911plus, with beam transmissometer, fluorometer, LICOR PAR sensor, LISST-25, and oxygen sensor.

Key

ADCP = Acoustic Doppler Current Profiler
BD = Bacterial degradation experiment
CT = Conductivity and temperature logger
CTD = Conductivity, temperature, depth sensor
FL = Fluorometer
OBS = Optical Backscatter Turbidity meter
Telemetry ADCP = ADCP sending data back to shore in real-time
WMS = Automatic water sampler

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
Q value below limit of quantification

Appendix 1: Coastal Observatory Site 21

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
1622706Currents -subsurface Eulerian2005-04-05 10:00:0053.45417 N, 3.64533 WRV Prince Madog PD11/05
701686Hydrography time series at depth2005-04-05 10:00:0153.45217 N, 3.6435 WRV Prince Madog PD11/05
701871Hydrography time series at depth2005-04-05 10:00:0353.45417 N, 3.64533 WRV Prince Madog PD11/05
1622731Currents -subsurface Eulerian2005-05-12 08:20:0053.45417 N, 3.64533 WRV Prince Madog PD18/05
701883Hydrography time series at depth2005-05-12 08:20:0353.45417 N, 3.64533 WRV Prince Madog PD18/05
1195131Fluorescence or pigments2005-05-12 08:30:0053.4522 N, 3.6413 WRV Prince Madog PD18/05
1195118Hydrography time series at depth2005-05-12 08:30:0053.4522 N, 3.6413 WRV Prince Madog PD18/05
1195143Transmittance/attenuance, turbidity, or SPM conc.2005-05-12 08:30:0053.4522 N, 3.6413 WRV Prince Madog PD18/05
701717Hydrography time series at depth2005-05-12 08:30:0153.45217 N, 3.64133 WRV Prince Madog PD18/05
701698Hydrography time series at depth2005-05-12 08:35:0053.45217 N, 3.64133 WRV Prince Madog PD18/05
1195155Water column chemistry2005-05-14 00:00:0053.4522 N, 3.6413 WRV Prince Madog PD18/05
1622755Currents -subsurface Eulerian2005-06-16 08:10:0053.45367 N, 3.64717 WRV Prince Madog PD21/05
701914Hydrography time series at depth2005-06-16 08:10:0353.45367 N, 3.64717 WRV Prince Madog PD21/05
1195179Fluorescence or pigments2005-06-16 08:30:0053.4512 N, 3.6482 WRV Prince Madog PD21/05
1195167Hydrography time series at depth2005-06-16 08:30:0053.4512 N, 3.6482 WRV Prince Madog PD21/05
1195180Transmittance/attenuance, turbidity, or SPM conc.2005-06-16 08:30:0053.4512 N, 3.6482 WRV Prince Madog PD21/05
701858Hydrography time series at depth2005-06-16 08:30:0153.45117 N, 3.64817 WRV Prince Madog PD21/05
701729Hydrography time series at depth2005-06-16 08:35:0053.45117 N, 3.64817 WRV Prince Madog PD21/05
1195192Water column chemistry2005-06-17 00:00:0053.4512 N, 3.6482 WRV Prince Madog PD21/05
1622823Currents -subsurface Eulerian2005-07-14 07:00:0053.45367 N, 3.64733 WRV Prince Madog PD25/05
698775Hydrography time series at depth2005-07-14 07:00:0353.45367 N, 3.64733 WRV Prince Madog PD25/05
698880Hydrography time series at depth2005-07-14 07:15:0053.45333 N, 3.64217 WRV Prince Madog PD25/05
698867Hydrography time series at depth2005-07-14 07:20:0153.45333 N, 3.64217 WRV Prince Madog PD25/05
1195223Fluorescence or pigments2005-07-14 07:30:0053.4533 N, 3.6422 WRV Prince Madog PD25/05
1195211Hydrography time series at depth2005-07-14 07:30:0053.4533 N, 3.6422 WRV Prince Madog PD25/05
1195235Transmittance/attenuance, turbidity, or SPM conc.2005-07-14 07:30:0053.4533 N, 3.6422 WRV Prince Madog PD25/05
1195247Water column chemistry2005-07-15 00:00:0053.4533 N, 3.6422 WRV Prince Madog PD25/05
1622859Currents -subsurface Eulerian2005-08-18 11:40:0053.454 N, 3.64817 WRV Prince Madog PD30/05
698806Hydrography time series at depth2005-08-18 11:40:0353.454 N, 3.64817 WRV Prince Madog PD30/05
679323Fluorescence or pigments2005-08-18 12:00:0053.4518 N, 3.649 WRV Prince Madog PD30/05
698855Hydrography time series at depth2005-08-18 12:00:0053.45183 N, 3.649 WRV Prince Madog PD30/05
679335Surface temp/sal2005-08-18 12:00:0053.4518 N, 3.649 WRV Prince Madog PD30/05
679347Transmittance/attenuance, turbidity, or SPM conc.2005-08-18 12:00:0053.4518 N, 3.649 WRV Prince Madog PD30/05
679359Water column chemistry2005-08-20 00:00:0053.4518 N, 3.649 WRV Prince Madog PD30/05
1622903Currents -subsurface Eulerian2005-09-16 10:00:0053.45467 N, 3.649 WRV Prince Madog PD34/05
698818Hydrography time series at depth2005-09-16 10:00:0353.45467 N, 3.649 WRV Prince Madog PD34/05
1622940Currents -subsurface Eulerian2005-10-27 09:30:0053.45 N, 3.64317 WRV Prince Madog PD41/05
696314Hydrography time series at depth2005-10-27 09:30:0353.45 N, 3.64317 WRV Prince Madog PD41/05
679372Fluorescence or pigments2005-10-27 10:00:0053.4499 N, 3.6407 WRV Prince Madog PD41/05
679360Surface temp/sal2005-10-27 10:00:0053.4499 N, 3.6407 WRV Prince Madog PD41/05
679384Transmittance/attenuance, turbidity, or SPM conc.2005-10-27 10:00:0053.4499 N, 3.6407 WRV Prince Madog PD41/05
696547Hydrography time series at depth2005-10-27 10:00:0153.45 N, 3.64083 WRV Prince Madog PD41/05
696351Hydrography time series at depth2005-12-14 12:00:0353.45 N, 3.658 WRV Prince Madog PD48/05
1622988Currents -subsurface Eulerian2005-12-15 14:39:3853.45 N, 3.658 WRV Prince Madog PD48/05
1623064Currents -subsurface Eulerian2006-02-06 12:30:0053.448 N, 3.639 WRV Prince Madog PD04/06
696363Hydrography time series at depth2006-02-06 12:30:0353.448 N, 3.639 WRV Prince Madog PD04/06
679396Surface temp/sal2006-02-06 13:00:0053.4481 N, 3.6393 WRV Prince Madog PD04/06
679403Transmittance/attenuance, turbidity, or SPM conc.2006-02-06 13:00:0053.4481 N, 3.6393 WRV Prince Madog PD04/06
1623168Currents -subsurface Eulerian2006-04-05 13:20:0053.44767 N, 3.638 WRV Prince Madog PD12/06
700370Fluorescence or pigments2006-04-05 14:00:0053.4455 N, 3.6279 WRV Prince Madog PD12/06
700308Surface temp/sal2006-04-05 14:00:0053.4455 N, 3.6279 WRV Prince Madog PD12/06
700437Transmittance/attenuance, turbidity, or SPM conc.2006-04-05 14:00:0053.4455 N, 3.6279 WRV Prince Madog PD12/06
700382Fluorescence or pigments2006-05-11 12:00:0053.4437 N, 3.6237 WRV Prince Madog PD16/06
700333Surface temp/sal2006-05-11 12:00:0053.4437 N, 3.6237 WRV Prince Madog PD16/06
700449Transmittance/attenuance, turbidity, or SPM conc.2006-05-11 12:00:0053.4437 N, 3.6237 WRV Prince Madog PD16/06
1623224Currents -subsurface Eulerian2006-05-30 20:18:3853.4485 N, 3.6405 WRV Prince Madog PD16/06
1623261Currents -subsurface Eulerian2006-06-23 13:30:0053.44867 N, 3.64 WRV Prince Madog PD20/06
700394Fluorescence or pigments2006-06-23 14:00:0053.4495 N, 3.6415 WRV Prince Madog PD20/06
700321Surface temp/sal2006-06-23 14:00:0053.4495 N, 3.6415 WRV Prince Madog PD20/06
700450Transmittance/attenuance, turbidity, or SPM conc.2006-06-23 14:00:0053.4495 N, 3.6415 WRV Prince Madog PD20/06
1623297Currents -subsurface Eulerian2006-07-27 08:00:0053.44983 N, 3.64367 WRV Prince Madog PD22/06
747069Fluorescence or pigments2006-07-27 08:30:0053.4478 N, 3.6451 WRV Prince Madog PD22/06
746945Surface temp/sal2006-07-27 08:30:0053.4478 N, 3.6451 WRV Prince Madog PD22/06
747174Transmittance/attenuance, turbidity, or SPM conc.2006-07-27 08:30:0053.4478 N, 3.6451 WRV Prince Madog PD22/06
747070Fluorescence or pigments2006-08-16 07:30:0053.4508 N, 3.6409 WRV Prince Madog PD25/06
746957Surface temp/sal2006-08-16 07:30:0053.4508 N, 3.6409 WRV Prince Madog PD25/06
747186Transmittance/attenuance, turbidity, or SPM conc.2006-08-16 07:30:0053.4508 N, 3.6409 WRV Prince Madog PD25/06
1623341Currents -subsurface Eulerian2006-08-16 11:00:0053.44983 N, 3.64383 WRV Prince Madog PD25/06
747082Fluorescence or pigments2006-09-22 10:00:0053.4485 N, 3.6471 WRV Prince Madog PD29/06
746969Surface temp/sal2006-09-22 10:00:0053.4485 N, 3.6471 WRV Prince Madog PD29/06
747198Transmittance/attenuance, turbidity, or SPM conc.2006-09-22 10:00:0053.4485 N, 3.6471 WRV Prince Madog PD29/06
1623377Currents -subsurface Eulerian2006-09-22 11:30:0053.45 N, 3.644 WRV Prince Madog PD29/06
1013211CTD or STD cast2006-11-02 12:28:0053.45 N, 3.6525 WRV Prince Madog PD35/06
747094Fluorescence or pigments2006-11-02 13:00:0053.4508 N, 3.6408 WRV Prince Madog PD35/06
746970Surface temp/sal2006-11-02 13:00:0053.4508 N, 3.6408 WRV Prince Madog PD35/06
747205Transmittance/attenuance, turbidity, or SPM conc.2006-11-02 13:00:0053.4508 N, 3.6408 WRV Prince Madog PD35/06
1623389Currents -subsurface Eulerian2006-11-02 13:50:0053.45017 N, 3.644 WRV Prince Madog PD35/06
753106Hydrography time series at depth2006-11-02 13:50:0353.45017 N, 3.644 WRV Prince Madog PD35/06
1013223CTD or STD cast2006-11-02 13:52:0053.44767 N, 3.6445 WRV Prince Madog PD35/06
1003658CTD or STD cast2006-12-15 11:32:0053.4505 N, 3.64133 WRV Prince Madog PD37/06
1623421Currents -subsurface Eulerian2006-12-15 14:39:5753.44967 N, 3.64383 WRV Prince Madog PD37/06
753131Hydrography time series at depth2006-12-15 14:40:0353.44967 N, 3.64383 WRV Prince Madog PD37/06
747101Fluorescence or pigments2006-12-15 15:00:0053.4489 N, 3.6482 WRV Prince Madog PD37/06
746982Surface temp/sal2006-12-15 15:00:0053.4489 N, 3.6482 WRV Prince Madog PD37/06
747217Transmittance/attenuance, turbidity, or SPM conc.2006-12-15 15:00:0053.4489 N, 3.6482 WRV Prince Madog PD37/06
1623052Currents -subsurface Eulerian2007-02-14 16:00:0553.45 N, 3.64233 WRV Prince Madog PD02/07
753155Hydrography time series at depth2007-02-14 16:10:0353.45 N, 3.64233 WRV Prince Madog PD02/07
979049CTD or STD cast2007-02-14 18:42:0053.45167 N, 3.63917 WRV Prince Madog PD02/07
979234CTD or STD cast2007-02-15 14:36:0053.44867 N, 3.642 WRV Prince Madog PD02/07
753087Hydrography time series at depth2007-03-13 10:50:0153.45 N, 3.64217 WRV Prince Madog PD04/07
747113Fluorescence or pigments2007-03-13 11:00:0053.4504 N, 3.6372 WRV Prince Madog PD04/07
746994Surface temp/sal2007-03-13 11:00:0053.4504 N, 3.6372 WRV Prince Madog PD04/07
747229Transmittance/attenuance, turbidity, or SPM conc.2007-03-13 11:00:0053.4504 N, 3.6372 WRV Prince Madog PD04/07
937495CTD or STD cast2007-04-16 10:59:0053.449 N, 3.64667 WRV Prince Madog PD06/07
1623088Currents -subsurface Eulerian2007-04-16 11:00:0053.45083 N, 3.64083 WRV Prince Madog PD06/07
753179Hydrography time series at depth2007-04-16 11:00:0353.45083 N, 3.64083 WRV Prince Madog PD06/07
862307Fluorescence or pigments2007-04-19 12:00:0053.45095 N, 3.63857 WRV Prince Madog PD06/07
862092Surface temp/sal2007-04-19 12:00:0053.45095 N, 3.63857 WRV Prince Madog PD06/07
862516Transmittance/attenuance, turbidity, or SPM conc.2007-04-19 12:00:0053.45095 N, 3.63857 WRV Prince Madog PD06/07
937551CTD or STD cast2007-04-19 12:05:0053.45167 N, 3.636 WRV Prince Madog PD06/07
752987Hydrography time series at depth2007-04-19 12:50:0053.451 N, 3.6385 WRV Prince Madog PD06/07
753051Hydrography time series at depth2007-04-19 12:50:0253.451 N, 3.6385 WRV Prince Madog PD06/07
942240CTD or STD cast2007-05-17 06:51:0053.45033 N, 3.63633 WRV Prince Madog PD09/07
1623132Currents -subsurface Eulerian2007-05-17 07:50:0053.451 N, 3.6425 WRV Prince Madog PD09/07
753192Hydrography time series at depth2007-05-17 08:00:0353.451 N, 3.6425 WRV Prince Madog PD09/07
753014Hydrography time series at depth2007-05-17 12:50:0053.451 N, 3.63933 WRV Prince Madog PD09/07
753063Hydrography time series at depth2007-05-17 12:50:0053.451 N, 3.63933 WRV Prince Madog PD09/07
942288CTD or STD cast2007-05-17 12:57:0053.45217 N, 3.644 WRV Prince Madog PD09/07
862319Fluorescence or pigments2007-05-17 13:00:0053.45098 N, 3.63938 WRV Prince Madog PD09/07
862111Surface temp/sal2007-05-17 13:00:0053.45098 N, 3.63938 WRV Prince Madog PD09/07
862528Transmittance/attenuance, turbidity, or SPM conc.2007-05-17 13:00:0053.45098 N, 3.63938 WRV Prince Madog PD09/07
943046CTD or STD cast2007-06-21 09:28:0053.44983 N, 3.6415 WRV Prince Madog PD13/07
862320Fluorescence or pigments2007-06-21 10:00:0053.45295 N, 3.64237 WRV Prince Madog PD13/07
952916Hydrography time series at depth2007-06-21 10:00:0053.453 N, 3.64233 WRV Prince Madog PD13/07
952928Hydrography time series at depth2007-06-21 10:00:0053.453 N, 3.64233 WRV Prince Madog PD13/07
862123Surface temp/sal2007-06-21 10:00:0053.45295 N, 3.64237 WRV Prince Madog PD13/07
862541Transmittance/attenuance, turbidity, or SPM conc.2007-06-21 10:00:0053.45295 N, 3.64237 WRV Prince Madog PD13/07
952873Hydrography time series at depth2007-06-21 10:00:0153.453 N, 3.64233 WRV Prince Madog PD13/07
952897Hydrography time series at depth2007-06-21 10:00:0153.453 N, 3.64233 WRV Prince Madog PD13/07
943058CTD or STD cast2007-06-21 11:45:0053.45117 N, 3.63833 WRV Prince Madog PD13/07
1623181Currents -subsurface Eulerian2007-06-21 13:30:0053.45117 N, 3.64017 WRV Prince Madog PD13/07
952848Hydrography time series at depth2007-06-21 13:30:0353.45117 N, 3.64017 WRV Prince Madog PD13/07
943427CTD or STD cast2007-07-27 09:09:0053.45233 N, 3.64167 WRV Prince Madog PD16/07
862332Fluorescence or pigments2007-07-27 14:00:0053.4503 N, 3.63867 WRV Prince Madog PD16/07
862135Surface temp/sal2007-07-27 14:00:0053.4503 N, 3.63867 WRV Prince Madog PD16/07
862553Transmittance/attenuance, turbidity, or SPM conc.2007-07-27 14:00:0053.4503 N, 3.63867 WRV Prince Madog PD16/07
946413Hydrography time series at depth2007-07-27 14:10:0053.45033 N, 3.63867 WRV Prince Madog PD16/07
946369Hydrography time series at depth2007-07-27 14:10:0153.45033 N, 3.63867 WRV Prince Madog PD16/07
946394Hydrography time series at depth2007-07-27 14:10:0153.45033 N, 3.63867 WRV Prince Madog PD16/07
1623248Currents -subsurface Eulerian2007-07-27 14:40:0053.45533 N, 3.63917 WRV Prince Madog PD16/07
946357Hydrography time series at depth2007-07-27 14:40:0353.45533 N, 3.63917 WRV Prince Madog PD16/07
943476CTD or STD cast2007-07-27 17:40:0053.45083 N, 3.629 WRV Prince Madog PD16/07
943821CTD or STD cast2007-08-30 06:29:0053.45567 N, 3.63633 WRV Prince Madog PD20/07
941445Hydrography time series at depth2007-08-30 18:40:0053.44967 N, 3.64633 WRV Prince Madog PD20/07
941421Hydrography time series at depth2007-08-30 18:40:0153.44967 N, 3.64633 WRV Prince Madog PD20/07
862344Fluorescence or pigments2007-08-30 19:00:0053.4497 N, 3.64633 WRV Prince Madog PD20/07
862147Surface temp/sal2007-08-30 19:00:0053.4497 N, 3.64633 WRV Prince Madog PD20/07
862565Transmittance/attenuance, turbidity, or SPM conc.2007-08-30 19:00:0053.4497 N, 3.64633 WRV Prince Madog PD20/07
943950CTD or STD cast2007-08-30 19:02:0053.449 N, 3.6295 WRV Prince Madog PD20/07
945760CTD or STD cast2007-10-04 07:33:0053.4505 N, 3.646 WRV Prince Madog PD23/07
862356Fluorescence or pigments2007-10-04 13:00:0053.44862 N, 3.6421 WRV Prince Madog PD23/07
767894Hydrography time series at depth2007-10-04 13:00:0053.44867 N, 3.64217 WRV Prince Madog PD23/07
862159Surface temp/sal2007-10-04 13:00:0053.44862 N, 3.6421 WRV Prince Madog PD23/07
862577Transmittance/attenuance, turbidity, or SPM conc.2007-10-04 13:00:0053.44862 N, 3.6421 WRV Prince Madog PD23/07
767845Hydrography time series at depth2007-10-04 13:00:0153.44867 N, 3.64217 WRV Prince Madog PD23/07
767857Hydrography time series at depth2007-10-04 13:00:0153.44867 N, 3.64217 WRV Prince Madog PD23/07
945803CTD or STD cast2007-10-04 13:30:0053.4475 N, 3.63617 WRV Prince Madog PD23/07
1623316Currents -subsurface Eulerian2007-10-04 13:30:0053.46633 N, 3.64017 WRV Prince Madog PD23/07
767870Hydrography time series at depth2007-10-04 13:30:0353.46633 N, 3.64017 WRV Prince Madog PD23/07
946530CTD or STD cast2007-11-21 16:18:0053.44783 N, 3.63417 WRV Prince Madog PD27/07
770576Hydrography time series at depth2007-11-21 17:00:0053.4475 N, 3.64283 WRV Prince Madog PD27/07
770588Hydrography time series at depth2007-11-21 17:00:0053.4475 N, 3.64283 WRV Prince Madog PD27/07
862368Fluorescence or pigments2007-11-21 17:30:0053.44752 N, 3.64288 WRV Prince Madog PD27/07
862160Surface temp/sal2007-11-21 17:30:0053.44752 N, 3.64288 WRV Prince Madog PD27/07
862589Transmittance/attenuance, turbidity, or SPM conc.2007-11-21 17:30:0053.44752 N, 3.64288 WRV Prince Madog PD27/07
946542CTD or STD cast2007-11-21 18:37:0053.45167 N, 3.64817 WRV Prince Madog PD27/07
770539Hydrography time series at depth2007-11-22 08:00:0053.4475 N, 3.64283 WRV Prince Madog PD27/07
770540Hydrography time series at depth2007-11-22 08:00:0053.4475 N, 3.64283 WRV Prince Madog PD27/07
946806CTD or STD cast2008-01-11 01:41:0053.45167 N, 3.64517 WRV Prince Madog PD01/08
946880CTD or STD cast2008-01-11 12:07:0053.447 N, 3.63667 WRV Prince Madog PD01/08
770472Hydrography time series at depth2008-01-11 12:20:0053.44833 N, 3.64483 WRV Prince Madog PD01/08
770484Hydrography time series at depth2008-01-11 12:20:0053.44833 N, 3.64483 WRV Prince Madog PD01/08
770423Hydrography time series at depth2008-01-11 12:20:0153.44833 N, 3.64483 WRV Prince Madog PD01/08
770447Hydrography time series at depth2008-01-11 12:20:0153.44833 N, 3.64483 WRV Prince Madog PD01/08
862381Fluorescence or pigments2008-01-11 12:30:0053.44827 N, 3.64482 WRV Prince Madog PD01/08
862172Surface temp/sal2008-01-11 12:30:0053.44827 N, 3.64482 WRV Prince Madog PD01/08
862590Transmittance/attenuance, turbidity, or SPM conc.2008-01-11 12:30:0053.44827 N, 3.64482 WRV Prince Madog PD01/08
1623027Currents -subsurface Eulerian2008-01-11 13:10:0053.44967 N, 3.6415 WRV Prince Madog PD01/08
770392Hydrography time series at depth2008-01-11 13:10:0353.44967 N, 3.6415 WRV Prince Madog PD01/08
946892CTD or STD cast2008-01-11 14:03:0053.44983 N, 3.65117 WRV Prince Madog PD01/08
947139CTD or STD cast2008-03-14 15:36:0053.44933 N, 3.6395 WRV Prince Madog PD07/08
1623119Currents -subsurface Eulerian2008-03-14 18:40:0353.4495 N, 3.64217 WRV Prince Madog PD07/08
772429Hydrography time series at depth2008-03-14 18:50:0353.4495 N, 3.64217 WRV Prince Madog PD07/08
862393Fluorescence or pigments2008-03-14 19:00:0053.44827 N, 3.63855 WRV Prince Madog PD07/08
862184Surface temp/sal2008-03-14 19:00:0053.44827 N, 3.63855 WRV Prince Madog PD07/08
862608Transmittance/attenuance, turbidity, or SPM conc.2008-03-14 19:00:0053.44827 N, 3.63855 WRV Prince Madog PD07/08
772398Hydrography time series at depth2008-03-14 19:00:0153.44833 N, 3.6385 WRV Prince Madog PD07/08
772417Hydrography time series at depth2008-03-14 19:00:0153.44833 N, 3.6385 WRV Prince Madog PD07/08
947140CTD or STD cast2008-03-14 19:34:0053.448 N, 3.65333 WRV Prince Madog PD07/08
772282Hydrography time series at depth2008-04-16 16:30:0353.4495 N, 3.6415 WRV Prince Madog PD09/08
1623144Currents -subsurface Eulerian2008-04-16 16:30:0653.4495 N, 3.6415 WRV Prince Madog PD09/08
947268CTD or STD cast2008-04-16 16:36:0053.448 N, 3.63917 WRV Prince Madog PD09/08
1082205Fluorescence or pigments2008-04-16 17:00:0053.45 N, 3.64 WRV Prince Madog PD09/08
772301Hydrography time series at depth2008-04-16 17:00:0053.4465 N, 3.63733 WRV Prince Madog PD09/08
772325Hydrography time series at depth2008-04-16 17:00:0053.4465 N, 3.63733 WRV Prince Madog PD09/08
772350Hydrography time series at depth2008-04-16 17:00:0053.4465 N, 3.63733 WRV Prince Madog PD09/08
772362Hydrography time series at depth2008-04-16 17:00:0053.4465 N, 3.63733 WRV Prince Madog PD09/08
1082186Hydrography time series at depth2008-04-16 17:00:0053.45 N, 3.64 WRV Prince Madog PD09/08
1082266Transmittance/attenuance, turbidity, or SPM conc.2008-04-16 17:00:0053.45 N, 3.64 WRV Prince Madog PD09/08
947281CTD or STD cast2008-04-16 17:32:0053.45017 N, 3.62983 WRV Prince Madog PD09/08
948247CTD or STD cast2008-05-15 14:00:0053.449 N, 3.6485 WRV Prince Madog PD14/08
838307Hydrography time series at depth2008-05-15 14:50:0353.44983 N, 3.64133 WRV Prince Madog PD14/08
1623200Currents -subsurface Eulerian2008-05-15 14:50:4753.44983 N, 3.64133 WRV Prince Madog PD14/08
838320Hydrography time series at depth2008-05-15 15:10:0053.4495 N, 3.63883 WRV Prince Madog PD14/08
838344Hydrography time series at depth2008-05-15 15:10:0053.4495 N, 3.63883 WRV Prince Madog PD14/08
838381Hydrography time series at depth2008-05-15 15:10:0053.4495 N, 3.63883 WRV Prince Madog PD14/08
1082217Fluorescence or pigments2008-05-15 15:30:0053.45 N, 3.64 WRV Prince Madog PD14/08
1082198Hydrography time series at depth2008-05-15 15:30:0053.45 N, 3.64 WRV Prince Madog PD14/08
1082278Transmittance/attenuance, turbidity, or SPM conc.2008-05-15 15:30:0053.45 N, 3.64 WRV Prince Madog PD14/08
948259CTD or STD cast2008-05-15 15:50:0053.447 N, 3.62967 WRV Prince Madog PD14/08
948573CTD or STD cast2008-06-25 17:51:0053.45233 N, 3.649 WRV Prince Madog PD19/08
857876Hydrography time series at depth2008-06-25 19:10:0353.452 N, 3.64333 WRV Prince Madog PD19/08
949484CTD or STD cast2008-07-31 08:01:0053.4485 N, 3.63583 WRV Prince Madog PD23/08
857919Hydrography time series at depth2008-07-31 08:50:0053.44817 N, 3.6455 WRV Prince Madog PD23/08
857920Hydrography time series at depth2008-07-31 08:50:0053.44817 N, 3.6455 WRV Prince Madog PD23/08
1024614Fluorescence or pigments2008-07-31 09:00:0053.45 N, 3.65 WRV Prince Madog PD23/08
1024534Surface temp/sal2008-07-31 09:00:0053.45 N, 3.65 WRV Prince Madog PD23/08
1024699Transmittance/attenuance, turbidity, or SPM conc.2008-07-31 09:00:0053.45 N, 3.65 WRV Prince Madog PD23/08
949496CTD or STD cast2008-07-31 09:22:0053.45033 N, 3.63933 WRV Prince Madog PD23/08
1623617Currents -subsurface Eulerian2008-09-10 16:34:5953.45017 N, 3.64333 WRV Prince Madog PD29/08
1024626Fluorescence or pigments2008-09-10 17:30:0053.448 N, 3.6422 WRV Prince Madog PD29/08
939300Hydrography time series at depth2008-09-10 17:30:0053.44817 N, 3.644 WRV Prince Madog PD29/08
939312Hydrography time series at depth2008-09-10 17:30:0053.44817 N, 3.644 WRV Prince Madog PD29/08
1024546Surface temp/sal2008-09-10 17:30:0053.448 N, 3.6422 WRV Prince Madog PD29/08
1024706Transmittance/attenuance, turbidity, or SPM conc.2008-09-10 17:30:0053.448 N, 3.6422 WRV Prince Madog PD29/08
939232Hydrography time series at depth2008-09-10 17:30:0153.44817 N, 3.644 WRV Prince Madog PD29/08
939244Hydrography time series at depth2008-09-10 17:30:0153.44817 N, 3.644 WRV Prince Madog PD29/08
939219Hydrography time series at depth2008-09-11 08:00:0353.45017 N, 3.64333 WRV Prince Madog PD29/08
949724CTD or STD cast2008-10-22 19:46:0053.44983 N, 3.64433 WRV Prince Madog PD33/08
950123CTD or STD cast2008-12-11 12:27:0053.44983 N, 3.65 WRV Prince Madog PD37/08
1022865Hydrography time series at depth2008-12-11 13:40:0353.44983 N, 3.644 WRV Prince Madog PD37/08
1623691Currents -subsurface Eulerian2008-12-11 13:44:5953.44983 N, 3.644 WRV Prince Madog PD37/08
1024638Fluorescence or pigments2008-12-11 14:00:0053.4502 N, 3.6463 WRV Prince Madog PD37/08
1022908Hydrography time series at depth2008-12-11 14:00:0053.45017 N, 3.64633 WRV Prince Madog PD37/08
1022921Hydrography time series at depth2008-12-11 14:00:0053.45017 N, 3.64633 WRV Prince Madog PD37/08
1022969Hydrography time series at depth2008-12-11 14:00:0053.45017 N, 3.64633 WRV Prince Madog PD37/08
1022970Hydrography time series at depth2008-12-11 14:00:0053.45017 N, 3.64633 WRV Prince Madog PD37/08
1024558Surface temp/sal2008-12-11 14:00:0053.4502 N, 3.6463 WRV Prince Madog PD37/08
1024718Transmittance/attenuance, turbidity, or SPM conc.2008-12-11 14:00:0053.4502 N, 3.6463 WRV Prince Madog PD37/08
950135CTD or STD cast2008-12-11 14:31:0053.44967 N, 3.64783 WRV Prince Madog PD37/08
950227CTD or STD cast2009-02-05 12:54:0053.44867 N, 3.64633 WRV Prince Madog PD02/09B
1048376Hydrography time series at depth2009-02-05 13:50:0353.44967 N, 3.6435 WRV Prince Madog PD02/09B
1048481Hydrography time series at depth2009-02-05 14:10:0053.45183 N, 3.6455 WRV Prince Madog PD02/09B
1048493Hydrography time series at depth2009-02-05 14:10:0053.45183 N, 3.6455 WRV Prince Madog PD02/09B
1048444Hydrography time series at depth2009-02-05 14:10:0153.45183 N, 3.6455 WRV Prince Madog PD02/09B
1048432Hydrography time series at depth2009-02-05 14:10:0253.45183 N, 3.6455 WRV Prince Madog PD02/09B
950239CTD or STD cast2009-02-05 14:27:0053.449 N, 3.646 WRV Prince Madog PD02/09B
1024651Fluorescence or pigments2009-02-05 14:30:0053.4518 N, 3.64542 WRV Prince Madog PD02/09B
1024571Surface temp/sal2009-02-05 14:30:0053.4518 N, 3.64542 WRV Prince Madog PD02/09B
1024731Transmittance/attenuance, turbidity, or SPM conc.2009-02-05 14:30:0053.4518 N, 3.64542 WRV Prince Madog PD02/09B
950541CTD or STD cast2009-02-06 13:51:0053.44967 N, 3.64283 WRV Prince Madog PD02/09B
951519CTD or STD cast2009-04-02 07:39:0053.4515 N, 3.65083 WRV Prince Madog PD12/09
1640737Hydrography time series at depth2009-04-02 08:43:0653.4495 N, 3.6435 WRV Prince Madog PD12/09
1623746Currents -subsurface Eulerian2009-04-02 08:45:0053.4495 N, 3.6435 WRV Prince Madog PD12/09
1640774Hydrography time series at depth2009-04-02 08:50:0053.45067 N, 3.641 WRV Prince Madog PD12/09
1640786Hydrography time series at depth2009-04-02 08:50:0053.45067 N, 3.641 WRV Prince Madog PD12/09
1640694Hydrography time series at depth2009-04-02 08:50:0153.45067 N, 3.641 WRV Prince Madog PD12/09
1640725Hydrography time series at depth2009-04-02 08:50:0153.45067 N, 3.641 WRV Prince Madog PD12/09
951520CTD or STD cast2009-04-02 09:21:0053.45133 N, 3.6545 WRV Prince Madog PD12/09
1075638Fluorescence or pigments2009-04-02 10:00:0053.4507 N, 3.641 WRV Prince Madog PD12/09
1075510Hydrography time series at depth2009-04-02 10:00:0053.4507 N, 3.641 WRV Prince Madog PD12/09
1076076Transmittance/attenuance, turbidity, or SPM conc.2009-04-02 10:00:0053.4507 N, 3.641 WRV Prince Madog PD12/09
953760CTD or STD cast2009-05-13 05:18:0053.45017 N, 3.65 WRV Prince Madog PD18/09
1640830Hydrography time series at depth2009-05-13 07:40:0353.44967 N, 3.641 WRV Prince Madog PD18/09
1623955Currents -subsurface Eulerian2009-05-13 07:45:0053.44967 N, 3.641 WRV Prince Madog PD18/09
1640805Hydrography time series at depth2009-05-14 06:10:0053.4515 N, 3.63917 WRV Prince Madog PD18/09
1640829Hydrography time series at depth2009-05-14 06:10:0053.4515 N, 3.63917 WRV Prince Madog PD18/09
1640878Hydrography time series at depth2009-05-14 06:10:0053.4515 N, 3.63917 WRV Prince Madog PD18/09
953876CTD or STD cast2009-05-14 06:13:0053.45067 N, 3.64383 WRV Prince Madog PD18/09
1075651Fluorescence or pigments2009-05-14 06:30:0053.4515 N, 3.6392 WRV Prince Madog PD18/09
1075522Hydrography time series at depth2009-05-14 06:30:0053.4515 N, 3.6392 WRV Prince Madog PD18/09
1076088Transmittance/attenuance, turbidity, or SPM conc.2009-05-14 06:30:0053.4515 N, 3.6392 WRV Prince Madog PD18/09
1023070CTD or STD cast2009-06-17 16:20:0053.44733 N, 3.64217 WRV Prince Madog PD24/09
1023278CTD or STD cast2009-06-18 10:05:0053.4495 N, 3.64167 WRV Prince Madog PD24/09
1640922Hydrography time series at depth2009-06-18 12:20:0353.44983 N, 3.64133 WRV Prince Madog PD24/09
1623642Currents -subsurface Eulerian2009-06-18 12:25:0053.44983 N, 3.64133 WRV Prince Madog PD24/09
1023291CTD or STD cast2009-06-18 12:31:0053.4525 N, 3.63567 WRV Prince Madog PD24/09
1023334CTD or STD cast2009-08-02 22:17:0053.44933 N, 3.64 WRV Prince Madog PD33/09
1023463CTD or STD cast2009-08-03 11:37:0053.44967 N, 3.64083 WRV Prince Madog PD33/09
1623992Currents -subsurface Eulerian2009-08-03 12:35:0353.44967 N, 3.64117 WRV Prince Madog PD33/09
1641010Hydrography time series at depth2009-08-03 12:40:0353.44967 N, 3.64117 WRV Prince Madog PD33/09
1075663Fluorescence or pigments2009-08-03 13:30:0053.449 N, 3.6427 WRV Prince Madog PD33/09
1075534Hydrography time series at depth2009-08-03 13:30:0053.449 N, 3.6427 WRV Prince Madog PD33/09
1641046Hydrography time series at depth2009-08-03 13:30:0053.449 N, 3.64267 WRV Prince Madog PD33/09
1641058Hydrography time series at depth2009-08-03 13:30:0053.449 N, 3.64267 WRV Prince Madog PD33/09
1076107Transmittance/attenuance, turbidity, or SPM conc.2009-08-03 13:30:0053.449 N, 3.6427 WRV Prince Madog PD33/09
1640971Hydrography time series at depth2009-08-03 13:30:0153.449 N, 3.64267 WRV Prince Madog PD33/09
1640983Hydrography time series at depth2009-08-03 13:30:0153.449 N, 3.64267 WRV Prince Madog PD33/09
1023475CTD or STD cast2009-08-03 13:57:0053.45217 N, 3.644 WRV Prince Madog PD33/09
1024386CTD or STD cast2009-09-16 08:23:0053.44817 N, 3.6455 WRV Prince Madog PD38/09
1641126Hydrography time series at depth2009-09-16 09:30:0353.4495 N, 3.64117 WRV Prince Madog PD38/09
1623826Currents -subsurface Eulerian2009-09-16 09:34:5953.4495 N, 3.64117 WRV Prince Madog PD38/09
1641163Hydrography time series at depth2009-09-16 09:40:0053.44933 N, 3.63917 WRV Prince Madog PD38/09
1641175Hydrography time series at depth2009-09-16 09:40:0053.44933 N, 3.63917 WRV Prince Madog PD38/09
1641083Hydrography time series at depth2009-09-16 09:40:0153.44933 N, 3.63917 WRV Prince Madog PD38/09
1641102Hydrography time series at depth2009-09-16 09:40:0253.44933 N, 3.63917 WRV Prince Madog PD38/09
1024398CTD or STD cast2009-09-16 10:05:0053.45183 N, 3.64367 WRV Prince Madog PD38/09
1024454CTD or STD cast2009-09-16 14:49:0053.45133 N, 3.64183 WRV Prince Madog PD38/09
1030318CTD or STD cast2009-12-02 14:57:0053.45067 N, 3.647 WRV Prince Madog PD47/09
1641243Hydrography time series at depth2009-12-02 16:10:0353.45 N, 3.64183 WRV Prince Madog PD47/09
1623906Currents -subsurface Eulerian2009-12-02 16:15:0053.45 N, 3.64183 WRV Prince Madog PD47/09
1075675Fluorescence or pigments2009-12-02 18:30:0053.45 N, 3.6388 WRV Prince Madog PD47/09
1075546Hydrography time series at depth2009-12-02 18:30:0053.45 N, 3.6388 WRV Prince Madog PD47/09
1641279Hydrography time series at depth2009-12-02 18:30:0053.45 N, 3.63883 WRV Prince Madog PD47/09
1641280Hydrography time series at depth2009-12-02 18:30:0053.45 N, 3.63883 WRV Prince Madog PD47/09
1076119Transmittance/attenuance, turbidity, or SPM conc.2009-12-02 18:30:0053.45 N, 3.6388 WRV Prince Madog PD47/09
1641199Hydrography time series at depth2009-12-02 18:30:0153.45 N, 3.63883 WRV Prince Madog PD47/09
1641218Hydrography time series at depth2009-12-02 18:30:0153.45 N, 3.63883 WRV Prince Madog PD47/09
1030331CTD or STD cast2009-12-02 18:52:0053.4515 N, 3.631 WRV Prince Madog PD47/09
1030392CTD or STD cast2010-01-26 13:53:0053.45167 N, 3.643 WRV Prince Madog PD02/10
1090623CTD or STD cast2010-06-10 11:09:0053.44917 N, 3.645 WRV Prince Madog PD17/10
1641716Hydrography time series at depth2010-06-10 18:20:0053.45717 N, 3.63883 WRV Prince Madog PD17/10
1641648Hydrography time series at depth2010-06-10 18:20:0153.45717 N, 3.63883 WRV Prince Madog PD17/10
1641661Hydrography time series at depth2010-06-10 18:20:0153.45717 N, 3.63883 WRV Prince Madog PD17/10
1641728Hydrography time series at depth2010-06-10 19:10:0053.45717 N, 3.63883 WRV Prince Madog PD17/10
1090819CTD or STD cast2010-07-07 16:34:0053.4505 N, 3.63883 WRV Prince Madog PD21/10
1112362CTD or STD cast2010-08-12 12:59:0053.45083 N, 3.64233 WRV Prince Madog PD29/10
1114264CTD or STD cast2010-09-29 13:52:0053.44933 N, 3.63883 WRV Prince Madog PD36/10
1140965CTD or STD cast2010-12-07 17:35:0053.45017 N, 3.64667 WRV Prince Madog PD49/10
1149147CTD or STD cast2011-01-13 14:11:0053.4505 N, 3.6415 WRV Prince Madog PD01/11
1150020CTD or STD cast2011-03-17 14:53:0053.4495 N, 3.64333 WRV Prince Madog PD07/11
1117169CTD or STD cast2011-04-20 19:29:0053.45167 N, 3.64067 WRV Prince Madog PD11/11
1118714CTD or STD cast2011-06-07 03:07:0053.45233 N, 3.64417 WRV Prince Madog PD43/11