16/07/2018 - Services will be unavailable for a short period of time from 12pm (BST) today. [Service status]

Metadata Report for BODC Series Reference Number 946923


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 research vessel
Originating Country United Kingdom
Originator Mr Phil Knight
Originating Organization Proudman Oceanographic Laboratory (now National Oceanography Centre, Liverpool)
Processing Status banked
Online delivery of data Download available - Ocean Data View (ODV) format
Project(s) Oceans 2025
Oceans 2025 Theme 3
Oceans 2025 Theme 3 WP3.3
POL Dee Experiment
 

Data Identifiers

Originator's Identifier C001
BODC Series Reference 946923
 

Time Co-ordinates(UT)

Start Time (yyyy-mm-dd hh:mm) 2008-03-13 11:01
End Time (yyyy-mm-dd hh:mm) -
Nominal Cycle Interval 0.5 decibars
 

Spatial Co-ordinates

Latitude 53.36917 N ( 53° 22.2' N )
Longitude 3.33150 W ( 3° 19.9' W )
Positional Uncertainty 0.05 to 0.1 n.miles
Minimum Sensor or Sampling Depth 1.24 m
Maximum Sensor or Sampling Depth 9.66 m
Minimum Sensor or Sampling Height 2.24 m
Maximum Sensor or Sampling Height 10.66 m
Sea Floor Depth 11.9 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
FVLTWS011VoltsVoltage 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
NVLTLS011VoltsVoltage 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 co-ordinate) exerted by the water body by profiling pressure sensor and corrected to read zero at sea level
PSALCC011DimensionlessPractical salinity of the water body by CTD and computation using UNESCO 1983 algorithm and 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
TVLTZR011VoltsVoltage 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

Problem Report

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. It is advised that the data should only be used for relative comparisons.

Data quality notes

LISST transmission and scattering

Users should be aware that the clear water values measured on different cruises are observed to increase and decrease at times, which is not consistent behaviour. In addition, the clear water scattering values are also sometimes less than and sometimes greater than those measured by the manufacturer at the time of last calibration (October 2006). This may be due to a problem with the instrument or the method in which the clear water values are measured.


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 PD07_08 CTD Instrumentation

The CTD unit was a Sea-Bird Electronics 911plus system (SN P23655-0620), with dissolved oxygen sensor. 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. Also attached was a Sea-Bird SBE-35 Temperature Logger to supply an independent check of temperature. All instruments were attached to a Sea-Bird SBE 32 compact carousel. The table below lists more detailed information about the various sensors.

Sensor Model Serial Number Calibration (UT) Comments
Pressure transducer Paroscientific Digiquartz 42A-105 76076 2004-01-21 -
Conductivity sensor SBE 4 2543 2004-01-14 -
Temperature sensor SBE 3 P4100 2004-01-21 -
Dissolved oxygen SBE 13 Beckmann 130580 2004-01-05 -
Transmissometer (660 nm) SeaTech T1000 T1021 1998-03-03 0.2 m path
Fluorometer Turner SCUFA II 262 - -
LISST 25A 120 2006-10-26 Range: 1.25 to 250 µm
LI-COR (contains CEFAS in-house electronics) LI 192SB CEFAS #26 - -
Temperature Logger SBE-35 0041 2005-05-29 -

Change of sensors during cruise: None reported.

Sampling device

Rosette sampling system equipped with 5 l sampling bottles (manufactured by Ocean Test Equipment Inc.).

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 PD07_08 CTD Processing

Sampling strategy

A total of 30 CTD casts were performed during the cruise throughout Liverpool Bay. Five casts (casts C001 - C005) were performed in the Dee Estuary during recovery of instrumentation deployed as part of Oceans 2025 WP3.3. 25 casts (casts C006 - C030) were carried out as part of Oceans 2025 Theme 10 SO11. Rosette bottles were fired throughout the water column on the upcast of most profiles. Independent temperature data were recorded by a Sea-Bird SBE-35 Deep Ocean Standards Thermometer at the time of each bottle firing. Data were measured at 24 Hz, averaged to 1 Hz by the deck unit and logged 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.

BODC post-processing and screening

Calibrations


Project Information

Oceans 2025 - The NERC Marine Centres' Strategic Research Programme 2007-2012

Who funds the programme?

The Natural Environment Research Council (NERC) funds the Oceans 2025 programme, which was originally planned in the context of NERC's 2002-2007 strategy and later realigned to NERC's subsequent strategy (Next Generation Science for Planet Earth; NERC 2007).

Who is involved in the programme?

The Oceans 2025 programme was designed by and is to be implemented through seven leading UK marine centres. The marine centres work together in coordination and are also supported by cooperation and input from government bodies, universities and other partners. The seven marine centres are:

Oceans2025 provides funding to three national marine facilities, which provide services to the wider UK marine community, in addition to the Oceans 2025 community. These facilities are:

The NERC-run Strategic Ocean Funding Initiative (SOFI) provides additional support to the programme by funding additional research projects and studentships that closely complement the Oceans 2025 programme, primarily through universities.

What is the programme about?

Oceans 2025 sets out to address some key challenges that face the UK as a result of a changing marine environment. The research funded through the programme sets out to increase understanding of the size, nature and impacts of these changes, with the aim to:

In order to address these aims there are nine science themes supported by the Oceans 2025 programme:

In the original programme proposal there was a theme on health and human impacts (Theme 7). The elements of this Theme have subsequently been included in Themes 3 and 9.

When is the programme active?

The programme started in April 2007 with funding for 5 years.

Brief summary of the programme fieldwork/data

Programme fieldwork and data collection are to be achieved through:

The data is to be fed into models for validation and future projections. Greater detail can be found in the Theme documents.


Oceans 2025 Theme 3: Shelf and Coastal Processes

Over the next 20 years, UK local marine environments are predicted to experience ever-increasing rates of change - including increased temperature and seawater acidity, changing freshwater run-off, changes in sea level, and a likely increase in flooding events - causing great concern for those charged with their management and protection. The future quality, health and sustainability of UK marine waters require improved appreciation of the complex interactions that occur not only within the coastal and shelf environment, but also between the environment and human actions. This knowledge must primarily be provided by whole-system operational numerical models, able to provide reliable predictions of short and long-term system responses to change.

However, such tools are only viable if scientists understand the underlying processes they are attempting to model and can interpret the resulting data. Many fundamental processes in shelf edge, shelf, coastal and estuarine systems, particularly across key interfaces in the environment, are not fully understood.

Theme 3 addresses the following broad questions:

Within Oceans 2025, Theme 3 will develop the necessary understanding of interacting processes to enable the consequences of environmental and anthropogenic change on UK shelf seas, coasts and estuaries to be predicted. Theme 3 will also provide knowledge that can improve the forecasting capability of models being used for the operational management of human activities in the coastal marine environment. Theme 3 is therefore directly relevant to all three of NERC's current strategic priorities; Earth's Life-Support Systems, Climate Change, and Sustainable Economies

The official Oceans 2025 documentation for this Theme is available from the following link: Oceans 2025 Theme 3

Weblink: http://www.oceans2025.org/


Oceans 2025 Theme 3, Work Package 3.3: Bottom Boundary Layer, Optics and Suspended Sediments Processes

This Work Package (WP) is a combination of Work Package 3.3 and 3.4 as proposed in the original Oceans 2025 proposal. It continues and expands the research undertaken in the Proudman Oceanographic Laboratory Dee Experiment project.

Sediment transport process models underpin scientific ability to predict the entrainment of sediments into the water column and the transport of sediments for forecasting seabed and coastal morphodynamic evolution. The difficulty in achieving accurate process models lies with the complex inter-dependence of sediment processes in the bottom boundary layer. Near the bed, the fundamentals of sediment transport are governed by interactions between the sediment transport triad; the bed, the hydrodynamics and the mobile sediments. These three components interrelate, being mutually interactive and interdependent.

POL aim to use a combination of high-frequency underwater acoustics and laser optical measurements to make co-located simultaneous measurements of the triad. These measurements provide an observational framework capable of assessing and advancing the latest sediment transport models available. These measurements will be made in a range of environments, with the objective of achieving significant advances in understanding and modelling capability in coastal sediment transport. POL will also address the dynamics of suspended sediment behaviour in the context of sediment supply to the coastal zone from estuaries, and of coastal water column optical properties. Ths will allow improvement of the modelling accuracy of coastal suspended sediment transport and enable development of a new description of sediment suspension and water opacity that will improve simulation of coastal primary productivity.

The specific objectives are:

Fieldwork

The study site chosen by POL for this research was the Dee Estuary, Liverpool Bay. POL performed fieldwork in the Hilbre Channel on the eastern side of the Estuary and the Welsh Channel on the western exit of the Estuary, with emphasis placed on two repeat stations, HC and WC. The fieldwork under Work Package 3.3 commenced in April 2007 and has been summarised below:

Cruise Dates Hilbre Channel Welsh Channel
PD06_07 2007-04-16 to 2007-04-19 18 hour CTD station
Mooring recovery
15 hour CTD station
Mooring recovery
PD04_08 2008-02-12 to 2008-02-15 25 hour CTD station
2 x mooring deployment
19 hour CTD station
1 x mooring deployment
PD02_09A 2009-02-02 to 2009-02-04 25 hour CTD station
1 x mooring deployment
22 hour CTD station
1 mooring deployment
PD06_09 2009-03-03 to 2009-03-05 25 hour CTD station
Mooring recovery
18 hour CTD station
Mooring recovery

More detailed information on this Work Package is available at pages 8 - 9 and 9-10 of the official Oceans 2025 Theme 3 document: Oceans 2025 Theme 3

Weblink: http://www.oceans2025.org/


Proudman Oceanographic Laboratory Dee Experiment

Introduction

Sediment transport process models are a vital tool in allowing scientists to predict sediment transport and forecast seabed and coastal morphodynamic evolution. It is however, difficult to obtain accurate models due to the complex inter-dependence of sediment processes in the bottom boundary layer. This inter-dependence is governed by interactions between the sediment transport triad; the bed, the hydrodynamics and the mobile sediments.

Scientific Objectives

Fieldwork

The study site chosen by POL for this research was the Dee Estuary, Liverpool Bay. POL performed fieldwork in the Hilbre Channel on the eastern side of the Estuary and the Welsh Channel on the western exit of the Estuary, with emphasis placed on two repeat stations, HC and WC. The fieldwork started in February 2005 and has been summarised below:

Cruise Dates Hilbre Channel Welsh Channel
PD03_05 2005-02-03 to 2005-02-04 25 hour CTD station
3 x mooring deployments
13 hour CTD station
1 mooring deployment
PD07_05 2005-03-03 to 2005-03-04 23 hour CTD station
Mooring recovery
19 hour CTD station
Mooring recovery
PD05_06 2006-02-08 to 2006-02-10 24 hour CTD station
2 x mooring deployment
22 hour CTD station
1 mooring deployment
PD09_06 2006-03-06 to 2006-03-09 23 hour CTD station
Mooring recovery
25 hour CTD station
Mooring recovery
PD04_07 2007-03-13 to 2007-03-16 25 hour CTD station
2 x mooring deployment
25 hour CTD station
1 mooring deployment

Funding

The Dee Experiment project was core funded by POL under Programme 2 (Shallow coastal seas) Theme 5 (Coastal and sediment processes) of POL's Science Programme 2001 - 2006. From March 2007 onwards, this core funding was replaced by funding from NERC's Oceans 2025 programme and the Dee Experiment research continued as part of Oceans 2025 Work Package 3.3.


Data Activity or Cruise Information

Cruise

Cruise Name PD07/08
Departure Date 2008-03-10
Arrival Date 2008-03-15
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 NameDee Estuary Station WC
CategoryOffshore area
Latitude53° 22.12' N
Longitude3° 19.68' W
Water depth below MSL12.0 m

Dee Estuary Station WC

This station is located within the Welsh Channel of the Dee Estuary, Liverpool Bay. It is one of two stations repeatedly visited by the Proudman Oceanographic Laboratory (POL) in the Dee. All activities at this site occurred within a box bounded by co-ordinates 53.371°N, 3.31791°W at the north-east corner and 53.36642°N, 3.33817°W at the south-west corner. Typical depth ranges encountered within the box are 7 m - 17 m.

BODC image

POL activites can be separated into two groups. These are (i) repeat CTD profiles over tidal cycles; (ii) mooring deployments.

The deployment history, to date, for this station is summarised below:

Cruise Start Date End Date Casts
PD07_04 2004-03-04 2004-03-05 23
PD11_04A 2005-03-29 2005-03-30 26
PD03_05 2005-02-03 2005-02-04 27
PD07_05 2005-03-03 2005-03-04 40
PD05_06 2006-02-10 2006-02-10 44
PD09_06 2006-03-08 2006-03-09 50
PD04_07 2007-03-13 2007-03-14 50
PD06_07 2007-04-18 2007-04-19 23
PD04_08 2008-02-12 2008-02-13 41
PD07_08 2008-03-13 2008-03-13 5
PD02_09A 2009-02-03 2009-02-04 45
PD06_09 2009-03-03 2009-03-04 39
PD16_09 2009-05-06 2009-05-07 29
PD22_09 2009-06-02 2009-06-03 37

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

The mooring deployment history for this site is as follows:

Coverage Instruments
February to March 2005 1.2 MHz ADCP, LISST-100C
February to March 2006 1.2 MHz ADCP, LISST-100C
February to March 2007 1.2 MHz ADCP, 2D ripple profiler, ABS, ADV x 3, LISST-100C, settling tube
February to March 2008 600 kHz ADCP, 2D ripple profiler, ABS, ADV x 3, LISST-100C
February to June 2009 1.2 MHz ADCP, 2D ripple profiler, ABS, ADV x 3, LISST-100X, SBE-37 MicroCAT x 2, settling tube

Key:

ADCP: Acoustic Doppler Current Profiler
ABS: Acoustic Backscatter Sensor
ADV: Acoustic Doppler Velocimeter
LISST: Laser In-Situ Scattering Transmissometer
SBE-37 MicroCAT: Conductivity and Temperature Sensor

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: Dee Estuary Station WC

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
844847Currents -subsurface Eulerian2007-03-13 06:00:0053.36745 N, 3.32335 WRV Prince Madog PD04/07
844859Currents -subsurface Eulerian2007-03-13 06:00:0053.36745 N, 3.32335 WRV Prince Madog PD04/07
844860Currents -subsurface Eulerian2007-03-13 06:00:0053.36745 N, 3.32335 WRV Prince Madog PD04/07
969694CTD or STD cast2007-03-13 15:10:0053.36817 N, 3.3275 WRV Prince Madog PD04/07
969701CTD or STD cast2007-03-13 15:33:0053.36817 N, 3.32767 WRV Prince Madog PD04/07
969713CTD or STD cast2007-03-13 15:59:0053.36817 N, 3.3275 WRV Prince Madog PD04/07
969725CTD or STD cast2007-03-13 16:30:0053.36833 N, 3.32767 WRV Prince Madog PD04/07
969737CTD or STD cast2007-03-13 17:01:0053.36817 N, 3.32767 WRV Prince Madog PD04/07
969749CTD or STD cast2007-03-13 17:30:0053.368 N, 3.32767 WRV Prince Madog PD04/07
969750CTD or STD cast2007-03-13 18:00:0053.368 N, 3.32833 WRV Prince Madog PD04/07
969762CTD or STD cast2007-03-13 18:32:0053.36833 N, 3.32867 WRV Prince Madog PD04/07
969774CTD or STD cast2007-03-13 19:01:0053.36817 N, 3.329 WRV Prince Madog PD04/07
969786CTD or STD cast2007-03-13 19:34:0053.36833 N, 3.329 WRV Prince Madog PD04/07
969798CTD or STD cast2007-03-13 20:04:0053.36817 N, 3.329 WRV Prince Madog PD04/07
969805CTD or STD cast2007-03-13 20:31:0053.36817 N, 3.32917 WRV Prince Madog PD04/07
969817CTD or STD cast2007-03-13 21:05:0053.36817 N, 3.32933 WRV Prince Madog PD04/07
969829CTD or STD cast2007-03-13 21:31:0053.36817 N, 3.3295 WRV Prince Madog PD04/07
969830CTD or STD cast2007-03-13 22:01:0053.36817 N, 3.3295 WRV Prince Madog PD04/07
969842CTD or STD cast2007-03-13 22:33:0053.36817 N, 3.3295 WRV Prince Madog PD04/07
969854CTD or STD cast2007-03-13 23:02:0053.36817 N, 3.32933 WRV Prince Madog PD04/07
969866CTD or STD cast2007-03-13 23:33:0053.36817 N, 3.32933 WRV Prince Madog PD04/07
969878CTD or STD cast2007-03-14 00:02:0053.36833 N, 3.329 WRV Prince Madog PD04/07
969891CTD or STD cast2007-03-14 00:32:0053.36833 N, 3.3285 WRV Prince Madog PD04/07
969909CTD or STD cast2007-03-14 01:02:0053.36833 N, 3.32833 WRV Prince Madog PD04/07
969910CTD or STD cast2007-03-14 01:33:0053.36833 N, 3.32833 WRV Prince Madog PD04/07
969922CTD or STD cast2007-03-14 02:03:0053.36833 N, 3.32833 WRV Prince Madog PD04/07
969934CTD or STD cast2007-03-14 02:33:0053.36833 N, 3.32833 WRV Prince Madog PD04/07
969946CTD or STD cast2007-03-14 03:02:0053.36833 N, 3.32833 WRV Prince Madog PD04/07
969958CTD or STD cast2007-03-14 03:29:0053.36817 N, 3.32833 WRV Prince Madog PD04/07
969971CTD or STD cast2007-03-14 04:01:0053.36817 N, 3.32833 WRV Prince Madog PD04/07
969983CTD or STD cast2007-03-14 04:30:0053.36833 N, 3.32833 WRV Prince Madog PD04/07
969995CTD or STD cast2007-03-14 05:02:0053.36833 N, 3.32833 WRV Prince Madog PD04/07
970007CTD or STD cast2007-03-14 05:30:0053.36833 N, 3.32833 WRV Prince Madog PD04/07
970019CTD or STD cast2007-03-14 06:00:0053.36833 N, 3.32833 WRV Prince Madog PD04/07
970020CTD or STD cast2007-03-14 06:30:0053.36833 N, 3.32867 WRV Prince Madog PD04/07
970032CTD or STD cast2007-03-14 07:01:0053.36833 N, 3.329 WRV Prince Madog PD04/07
970044CTD or STD cast2007-03-14 07:30:0053.36817 N, 3.32917 WRV Prince Madog PD04/07
970056CTD or STD cast2007-03-14 08:01:0053.36817 N, 3.3295 WRV Prince Madog PD04/07
970068CTD or STD cast2007-03-14 08:31:0053.36817 N, 3.3295 WRV Prince Madog PD04/07
970081CTD or STD cast2007-03-14 09:03:0053.36817 N, 3.3295 WRV Prince Madog PD04/07
970093CTD or STD cast2007-03-14 09:32:0053.36817 N, 3.3295 WRV Prince Madog PD04/07
970100CTD or STD cast2007-03-14 10:01:0053.36817 N, 3.3295 WRV Prince Madog PD04/07
970112CTD or STD cast2007-03-14 10:32:0053.36817 N, 3.3295 WRV Prince Madog PD04/07
970124CTD or STD cast2007-03-14 11:03:0053.36833 N, 3.3295 WRV Prince Madog PD04/07
970136CTD or STD cast2007-03-14 11:31:0053.36817 N, 3.32933 WRV Prince Madog PD04/07
970148CTD or STD cast2007-03-14 12:03:0053.36817 N, 3.32933 WRV Prince Madog PD04/07
970161CTD or STD cast2007-03-14 12:34:0053.36833 N, 3.32917 WRV Prince Madog PD04/07
970173CTD or STD cast2007-03-14 13:04:0053.36833 N, 3.32917 WRV Prince Madog PD04/07
970185CTD or STD cast2007-03-14 13:32:0053.36817 N, 3.32867 WRV Prince Madog PD04/07
970197CTD or STD cast2007-03-14 14:02:0053.36817 N, 3.3285 WRV Prince Madog PD04/07
970204CTD or STD cast2007-03-14 14:33:0053.36817 N, 3.32833 WRV Prince Madog PD04/07
970216CTD or STD cast2007-03-14 15:00:0053.36817 N, 3.32833 WRV Prince Madog PD04/07
970228CTD or STD cast2007-03-14 15:30:0053.36817 N, 3.32833 WRV Prince Madog PD04/07
938148CTD or STD cast2007-04-18 16:01:0053.36967 N, 3.33283 WRV Prince Madog PD06/07
938161CTD or STD cast2007-04-18 16:30:0053.3695 N, 3.33267 WRV Prince Madog PD06/07
938173CTD or STD cast2007-04-18 17:00:0053.36967 N, 3.33267 WRV Prince Madog PD06/07
938185CTD or STD cast2007-04-18 17:32:0053.36967 N, 3.33267 WRV Prince Madog PD06/07
938197CTD or STD cast2007-04-18 18:01:0053.36967 N, 3.3325 WRV Prince Madog PD06/07
938204CTD or STD cast2007-04-18 18:31:0053.3695 N, 3.33217 WRV Prince Madog PD06/07
938216CTD or STD cast2007-04-18 19:03:0053.3695 N, 3.33183 WRV Prince Madog PD06/07
938228CTD or STD cast2007-04-18 19:32:0053.36933 N, 3.33033 WRV Prince Madog PD06/07
938241CTD or STD cast2007-04-18 20:06:0053.3695 N, 3.33083 WRV Prince Madog PD06/07
938253CTD or STD cast2007-04-18 21:02:0053.3685 N, 3.32967 WRV Prince Madog PD06/07
938265CTD or STD cast2007-04-18 21:35:0053.3685 N, 3.32967 WRV Prince Madog PD06/07
938277CTD or STD cast2007-04-18 22:02:0053.3685 N, 3.32967 WRV Prince Madog PD06/07
938289CTD or STD cast2007-04-18 22:32:0053.36883 N, 3.32967 WRV Prince Madog PD06/07
938290CTD or STD cast2007-04-18 23:02:0053.369 N, 3.32983 WRV Prince Madog PD06/07
938308CTD or STD cast2007-04-18 23:32:0053.369 N, 3.33017 WRV Prince Madog PD06/07
938321CTD or STD cast2007-04-19 00:03:0053.36867 N, 3.331 WRV Prince Madog PD06/07
938333CTD or STD cast2007-04-19 00:32:0053.3685 N, 3.33167 WRV Prince Madog PD06/07
938345CTD or STD cast2007-04-19 04:30:0053.3685 N, 3.33283 WRV Prince Madog PD06/07
938357CTD or STD cast2007-04-19 04:59:0053.3685 N, 3.33283 WRV Prince Madog PD06/07
938369CTD or STD cast2007-04-19 05:30:0053.3685 N, 3.33283 WRV Prince Madog PD06/07
938370CTD or STD cast2007-04-19 06:01:0053.36867 N, 3.33283 WRV Prince Madog PD06/07
938382CTD or STD cast2007-04-19 06:33:0053.36883 N, 3.3315 WRV Prince Madog PD06/07
938394CTD or STD cast2007-04-19 07:02:0053.36917 N, 3.33117 WRV Prince Madog PD06/07
928989CTD or STD cast2008-02-12 13:33:0053.3695 N, 3.3315 WRV Prince Madog PD04/08
928990CTD or STD cast2008-02-12 14:01:0053.36967 N, 3.3325 WRV Prince Madog PD04/08
929004CTD or STD cast2008-02-12 14:31:0053.3695 N, 3.33267 WRV Prince Madog PD04/08
929016CTD or STD cast2008-02-12 15:00:0053.3695 N, 3.33283 WRV Prince Madog PD04/08
929028CTD or STD cast2008-02-12 15:30:0053.3695 N, 3.3335 WRV Prince Madog PD04/08
929041CTD or STD cast2008-02-12 18:31:0053.36917 N, 3.33383 WRV Prince Madog PD04/08
929053CTD or STD cast2008-02-12 19:01:0053.36917 N, 3.33383 WRV Prince Madog PD04/08
929065CTD or STD cast2008-02-12 19:33:0053.36933 N, 3.33383 WRV Prince Madog PD04/08
929077CTD or STD cast2008-02-12 20:01:0053.36933 N, 3.33383 WRV Prince Madog PD04/08
929089CTD or STD cast2008-02-12 20:31:0053.36933 N, 3.33383 WRV Prince Madog PD04/08
929090CTD or STD cast2008-02-12 21:00:0053.36933 N, 3.33367 WRV Prince Madog PD04/08
929108CTD or STD cast2008-02-12 21:34:0053.36933 N, 3.33367 WRV Prince Madog PD04/08
929121CTD or STD cast2008-02-12 22:00:0053.36917 N, 3.333 WRV Prince Madog PD04/08
929133CTD or STD cast2008-02-12 22:30:0053.3695 N, 3.33267 WRV Prince Madog PD04/08
929145CTD or STD cast2008-02-12 23:01:0053.369 N, 3.332 WRV Prince Madog PD04/08
929157CTD or STD cast2008-02-12 23:30:0053.369 N, 3.33183 WRV Prince Madog PD04/08
929169CTD or STD cast2008-02-13 00:02:0053.369 N, 3.33183 WRV Prince Madog PD04/08
929170CTD or STD cast2008-02-13 00:32:0053.369 N, 3.33167 WRV Prince Madog PD04/08
929182CTD or STD cast2008-02-13 01:03:0053.36917 N, 3.33183 WRV Prince Madog PD04/08
929194CTD or STD cast2008-02-13 01:31:0053.369 N, 3.33183 WRV Prince Madog PD04/08
929201CTD or STD cast2008-02-13 02:02:0053.36917 N, 3.332 WRV Prince Madog PD04/08
929213CTD or STD cast2008-02-13 02:32:0053.36917 N, 3.33267 WRV Prince Madog PD04/08
929225CTD or STD cast2008-02-13 03:01:0053.36917 N, 3.33283 WRV Prince Madog PD04/08
929237CTD or STD cast2008-02-13 03:31:0053.36933 N, 3.33317 WRV Prince Madog PD04/08
929249CTD or STD cast2008-02-13 04:00:0053.36933 N, 3.33367 WRV Prince Madog PD04/08
929250CTD or STD cast2008-02-13 06:35:0053.36917 N, 3.33383 WRV Prince Madog PD04/08
929262CTD or STD cast2008-02-13 07:00:0053.36917 N, 3.33383 WRV Prince Madog PD04/08
929274CTD or STD cast2008-02-13 07:31:0053.36933 N, 3.33383 WRV Prince Madog PD04/08
929286CTD or STD cast2008-02-13 08:01:0053.36933 N, 3.33383 WRV Prince Madog PD04/08
929298CTD or STD cast2008-02-13 08:30:0053.36933 N, 3.33367 WRV Prince Madog PD04/08
929305CTD or STD cast2008-02-13 09:00:0053.36933 N, 3.33367 WRV Prince Madog PD04/08
929317CTD or STD cast2008-02-13 09:33:0053.36933 N, 3.33367 WRV Prince Madog PD04/08
929329CTD or STD cast2008-02-13 10:02:0053.369 N, 3.3335 WRV Prince Madog PD04/08
929330CTD or STD cast2008-02-13 10:32:0053.36933 N, 3.333 WRV Prince Madog PD04/08
929342CTD or STD cast2008-02-13 11:03:0053.369 N, 3.33217 WRV Prince Madog PD04/08
929354CTD or STD cast2008-02-13 11:32:0053.36883 N, 3.33217 WRV Prince Madog PD04/08
929366CTD or STD cast2008-02-13 12:01:0053.36883 N, 3.332 WRV Prince Madog PD04/08
929378CTD or STD cast2008-02-13 12:31:0053.369 N, 3.332 WRV Prince Madog PD04/08
929391CTD or STD cast2008-02-13 13:00:0053.369 N, 3.33183 WRV Prince Madog PD04/08
929409CTD or STD cast2008-02-13 13:31:0053.369 N, 3.332 WRV Prince Madog PD04/08
929410CTD or STD cast2008-02-13 13:59:0053.36717 N, 3.32067 WRV Prince Madog PD04/08
946935CTD or STD cast2008-03-13 11:31:0053.369 N, 3.33167 WRV Prince Madog PD07/08
946947CTD or STD cast2008-03-13 12:00:0053.36917 N, 3.3315 WRV Prince Madog PD07/08
946959CTD or STD cast2008-03-13 12:30:0053.36917 N, 3.3315 WRV Prince Madog PD07/08
946960CTD or STD cast2008-03-13 12:59:0053.36933 N, 3.3315 WRV Prince Madog PD07/08
930540CTD or STD cast2009-02-03 16:13:0053.37083 N, 3.3315 WRV Prince Madog PD02/09A
930552CTD or STD cast2009-02-03 16:36:0053.37083 N, 3.3315 WRV Prince Madog PD02/09A
930564CTD or STD cast2009-02-03 17:01:0053.37083 N, 3.3315 WRV Prince Madog PD02/09A
930576CTD or STD cast2009-02-03 17:31:0053.37083 N, 3.3315 WRV Prince Madog PD02/09A
930588CTD or STD cast2009-02-03 18:01:0053.371 N, 3.3315 WRV Prince Madog PD02/09A
930607CTD or STD cast2009-02-03 18:31:0053.37083 N, 3.33167 WRV Prince Madog PD02/09A
930619CTD or STD cast2009-02-03 19:01:0053.37083 N, 3.3315 WRV Prince Madog PD02/09A
930620CTD or STD cast2009-02-03 19:29:0053.37083 N, 3.3315 WRV Prince Madog PD02/09A
930632CTD or STD cast2009-02-03 20:01:0053.37083 N, 3.3315 WRV Prince Madog PD02/09A
930644CTD or STD cast2009-02-03 20:31:0053.37083 N, 3.33167 WRV Prince Madog PD02/09A
930656CTD or STD cast2009-02-03 21:01:0053.37083 N, 3.3315 WRV Prince Madog PD02/09A
930668CTD or STD cast2009-02-03 21:31:0053.37083 N, 3.3315 WRV Prince Madog PD02/09A
930681CTD or STD cast2009-02-03 22:01:0053.371 N, 3.3315 WRV Prince Madog PD02/09A
930693CTD or STD cast2009-02-03 22:31:0053.37083 N, 3.33167 WRV Prince Madog PD02/09A
930700CTD or STD cast2009-02-03 23:00:0053.37083 N, 3.3315 WRV Prince Madog PD02/09A
930712CTD or STD cast2009-02-03 23:32:0053.37083 N, 3.3315 WRV Prince Madog PD02/09A
930724CTD or STD cast2009-02-04 00:00:0053.37067 N, 3.33167 WRV Prince Madog PD02/09A
930736CTD or STD cast2009-02-04 00:30:0053.37083 N, 3.3315 WRV Prince Madog PD02/09A
930748CTD or STD cast2009-02-04 01:00:0053.371 N, 3.331 WRV Prince Madog PD02/09A
930761CTD or STD cast2009-02-04 01:30:0053.37083 N, 3.331 WRV Prince Madog PD02/09A
930773CTD or STD cast2009-02-04 02:01:0053.37083 N, 3.33083 WRV Prince Madog PD02/09A
930785CTD or STD cast2009-02-04 02:31:0053.3705 N, 3.331 WRV Prince Madog PD02/09A
930797CTD or STD cast2009-02-04 03:01:0053.3705 N, 3.33133 WRV Prince Madog PD02/09A
930804CTD or STD cast2009-02-04 03:30:0053.37083 N, 3.3315 WRV Prince Madog PD02/09A
930816CTD or STD cast2009-02-04 04:00:0053.371 N, 3.33133 WRV Prince Madog PD02/09A
930828CTD or STD cast2009-02-04 04:31:0053.371 N, 3.33133 WRV Prince Madog PD02/09A
930841CTD or STD cast2009-02-04 05:00:0053.371 N, 3.3315 WRV Prince Madog PD02/09A
930853CTD or STD cast2009-02-04 05:31:0053.37083 N, 3.3315 WRV Prince Madog PD02/09A
930865CTD or STD cast2009-02-04 06:00:0053.37083 N, 3.3315 WRV Prince Madog PD02/09A
930877CTD or STD cast2009-02-04 06:30:0053.37083 N, 3.3315 WRV Prince Madog PD02/09A
930889CTD or STD cast2009-02-04 07:01:0053.37083 N, 3.33167 WRV Prince Madog PD02/09A
930890CTD or STD cast2009-02-04 07:30:0053.37083 N, 3.33167 WRV Prince Madog PD02/09A
930908CTD or STD cast2009-02-04 08:00:0053.37067 N, 3.33167 WRV Prince Madog PD02/09A
930921CTD or STD cast2009-02-04 08:32:0053.37083 N, 3.33167 WRV Prince Madog PD02/09A
930933CTD or STD cast2009-02-04 09:01:0053.37083 N, 3.3315 WRV Prince Madog PD02/09A
930945CTD or STD cast2009-02-04 09:30:0053.37083 N, 3.33167 WRV Prince Madog PD02/09A
930957CTD or STD cast2009-02-04 10:01:0053.37083 N, 3.33167 WRV Prince Madog PD02/09A
930969CTD or STD cast2009-02-04 10:30:0053.37083 N, 3.33167 WRV Prince Madog PD02/09A
930970CTD or STD cast2009-02-04 11:01:0053.37083 N, 3.3315 WRV Prince Madog PD02/09A
930982CTD or STD cast2009-02-04 11:32:0053.37083 N, 3.3315 WRV Prince Madog PD02/09A
930994CTD or STD cast2009-02-04 12:03:0053.371 N, 3.3315 WRV Prince Madog PD02/09A
931008CTD or STD cast2009-02-04 12:30:0053.37083 N, 3.33167 WRV Prince Madog PD02/09A
931021CTD or STD cast2009-02-04 13:01:0053.37067 N, 3.3305 WRV Prince Madog PD02/09A
931033CTD or STD cast2009-02-04 13:31:0053.37067 N, 3.33067 WRV Prince Madog PD02/09A
931045CTD or STD cast2009-02-04 14:01:0053.3705 N, 3.33067 WRV Prince Madog PD02/09A
931113CTD or STD cast2009-03-03 12:31:0053.36917 N, 3.33117 WRV Prince Madog PD06/09
931125CTD or STD cast2009-03-03 13:01:0053.36917 N, 3.331 WRV Prince Madog PD06/09
931137CTD or STD cast2009-03-03 13:32:0053.3695 N, 3.33083 WRV Prince Madog PD06/09
931149CTD or STD cast2009-03-03 14:02:0053.36983 N, 3.33133 WRV Prince Madog PD06/09
931150CTD or STD cast2009-03-03 14:30:0053.36983 N, 3.33183 WRV Prince Madog PD06/09
931162CTD or STD cast2009-03-03 15:01:0053.37 N, 3.33217 WRV Prince Madog PD06/09
931174CTD or STD cast2009-03-03 15:31:0053.37 N, 3.33233 WRV Prince Madog PD06/09
931186CTD or STD cast2009-03-03 16:00:0053.36983 N, 3.33267 WRV Prince Madog PD06/09
931198CTD or STD cast2009-03-03 16:31:0053.36983 N, 3.33283 WRV Prince Madog PD06/09
931205CTD or STD cast2009-03-03 17:07:0053.37017 N, 3.33367 WRV Prince Madog PD06/09
931217CTD or STD cast2009-03-03 17:32:0053.37017 N, 3.33367 WRV Prince Madog PD06/09
931229CTD or STD cast2009-03-03 18:04:0053.37033 N, 3.3335 WRV Prince Madog PD06/09
931230CTD or STD cast2009-03-03 18:34:0053.3705 N, 3.33333 WRV Prince Madog PD06/09
931242CTD or STD cast2009-03-03 19:03:0053.37067 N, 3.3325 WRV Prince Madog PD06/09
931254CTD or STD cast2009-03-03 19:34:0053.3705 N, 3.33183 WRV Prince Madog PD06/09
931266CTD or STD cast2009-03-03 20:03:0053.3705 N, 3.33133 WRV Prince Madog PD06/09
931278CTD or STD cast2009-03-03 20:34:0053.37 N, 3.33033 WRV Prince Madog PD06/09
931291CTD or STD cast2009-03-03 21:02:0053.37017 N, 3.3305 WRV Prince Madog PD06/09
931309CTD or STD cast2009-03-03 21:32:0053.37033 N, 3.33067 WRV Prince Madog PD06/09
931310CTD or STD cast2009-03-03 22:02:0053.37017 N, 3.3305 WRV Prince Madog PD06/09
931322CTD or STD cast2009-03-03 22:34:0053.36967 N, 3.33033 WRV Prince Madog PD06/09
931334CTD or STD cast2009-03-03 23:02:0053.37 N, 3.3305 WRV Prince Madog PD06/09
931346CTD or STD cast2009-03-03 23:32:0053.36983 N, 3.33033 WRV Prince Madog PD06/09
931358CTD or STD cast2009-03-04 00:00:0053.36983 N, 3.33033 WRV Prince Madog PD06/09
931371CTD or STD cast2009-03-04 00:31:0053.36967 N, 3.33033 WRV Prince Madog PD06/09
931383CTD or STD cast2009-03-04 00:59:0053.3695 N, 3.33033 WRV Prince Madog PD06/09
931395CTD or STD cast2009-03-04 01:31:0053.36967 N, 3.33033 WRV Prince Madog PD06/09
931402CTD or STD cast2009-03-04 02:01:0053.36967 N, 3.33033 WRV Prince Madog PD06/09
931414CTD or STD cast2009-03-04 02:31:0053.36983 N, 3.33033 WRV Prince Madog PD06/09
931426CTD or STD cast2009-03-04 03:01:0053.36983 N, 3.33033 WRV Prince Madog PD06/09
931438CTD or STD cast2009-03-04 03:30:0053.37 N, 3.3305 WRV Prince Madog PD06/09
931451CTD or STD cast2009-03-04 04:01:0053.36967 N, 3.33183 WRV Prince Madog PD06/09
931463CTD or STD cast2009-03-04 04:31:0053.36967 N, 3.332 WRV Prince Madog PD06/09
931475CTD or STD cast2009-03-04 05:00:0053.36983 N, 3.332 WRV Prince Madog PD06/09
931487CTD or STD cast2009-03-04 05:31:0053.36983 N, 3.33233 WRV Prince Madog PD06/09
931499CTD or STD cast2009-03-04 06:02:0053.36983 N, 3.3325 WRV Prince Madog PD06/09
931506CTD or STD cast2009-03-04 06:33:0053.36983 N, 3.33267 WRV Prince Madog PD06/09
931518CTD or STD cast2009-03-04 07:03:0053.36983 N, 3.33267 WRV Prince Madog PD06/09