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BODC Cruise Metadata Report for RV Prince Madog (74P2) cruise PD25/06

Introduction

This report collates information from the BODC cruise inventory and oceanographic databases. It presents

Cruise Inventory Information

Long name RV Prince Madog (74P2) cruise PD25/06
Short name PD25/06
Objectives and Narrative 1) At 53 degrees 32 minutes N 3 degrees 21.8 minutes W, half a mile west of the Mersey Bar Light Vessel (site A)
To recover: (a) A sea bed frame for a 600 kHz ADCP (waves ADCP) to measure the mean current profile, pressures and directional waves (b) A CEFAS SmartBuoy (with cellulose bags) in a single point mooring with Sea-Bird MicroCAT temperature, conductivity loggers at 5m and 10m below the surface.
To deploy: (c) A sea bed frame for a 600 kHz ADCP (waves ADCP) to measure the mean current profile, pressures and directional waves (d) A CEFAS SmartBuoy (with cellulose bags) in a single point mooring with Sea-Bird MicroCAT temperature, conductivity loggers at 5m and 10m below the surface (e) A sea bed frame for a nutrient analyser measuring nitrate and phosphate four times a semi-diurnal tidal cycle.

2) At 53 degrees 27 minutes N 3degrees 38.6 minutes W (site 21, second site, B)
To recover: (f) A sea bed frame for a 600 kHz ADCP (waves ADCP) to measure the mean current profile, pressures and directional waves (g) A CEFAS SmartBuoy (with cellulose bags) in a single point mooring.
To deploy: (h) A sea bed frame for a 600 kHz ADCP (waves ADCP) to measure the mean current profile, pressures and directional waves (i) A CEFAS SmartBuoy (with cellulose bags and trace metal monitor) in a single point mooring.

3. To conduct a CTD / LISST survey of 34 sites every 5 miles covering the eastern Irish Sea between the North Wales coast and Blackpool and the Lancashire coast and the Great Orme, to determine the effects of the rivers Dee, Mersey and Ribble on Liverpool Bay.
4. To obtain calibration samples for salinity, transmittance, suspended sediment and for chlorophyll at selected stations.
5. To obtain near surface and bed water samples for nutrient and suspended sediment determination.
6. To obtain trace metal water samples.
7. Collect 10 vertical net hauls at mooring site A.
8. To deploy a directional wave buoy at 53 degrees 23.5 minute
Ship RV Prince Madog
Departure Port Menai Bridge, United Kingdom
Departure Date 2006-08-15
Arrival Port Menai Bridge, United Kingdom
Arrival Date 2006-08-16
Principal Scientist(s) M John Howarth (Proudman Oceanographic Laboratory)
Responsible Organisation University of Toyama Graduate School of Science and Engineering
Associated Project(s) POL Coastal Observatory
IHB Sea Areas Visited Irish Sea and St. George's Channel
Marsden Squares Visited 181;1
Work Area Description Liverpool Bay and eastern Irish Sea
Work Area Bounding Polygon 50N,5W; 55N,5W; 55N,0E; 50N,0E; 50N,5W
Southern Limit 50N
Northern Limit 55N
Western Limit 5W
Eastern Limit 0E

Cruise Inventory Datasets

Physical oceanography  
CTD stations Quantity: number of stations = 35
Description: The Sea-Bird 911 CTD recorded downwelling temperature and conductivity, 3 m above the bed.  
CTD stations Quantity: number of stations = 35
Description: Water samples were taken from a near bed bottle for calibration of the CTD salinity data.  
Optics (eg underwater light levels) Quantity: number of stations = 35
Description: The Sea-Bird 911 CTD recorded downwelling PAR light levels (CEFAS light sensor) 3 m above the bed.  
Transparency (eg transmissometer) Quantity: number of stations = 35
Description: The Sea-Bird 911 CTD recorded downwelling transmittance, 3 m above the bed.  
Water bottle stations Quantity: number of stations = 35
Description: Water samples were taken from a near bed bottle for calibration of the CTD salinity data.  
Chemical oceanography  
Nitrate Quantity: number of stations = 35
Description: Water samples were taken from the near surface and near bed bottles and frozen for nutrient analysis by NOC  
Oxygen Quantity: number of stations = 35
Description: The Sea-Bird 911 CTD recorded downwelling oxygen (no calibration samples) 3 m above the bed.  
Phosphate Quantity: number of stations = 35
Description: Water samples were taken from the near surface and near bed bottles and frozen for nutrient analysis by NOC  
Silicate Quantity: number of stations = 36
Description: Water samples were taken from the near surface and near bed bottles and frozen for nutrient analysis by NOC  
Contamination  
Suspended matter Quantity: number of stations = 35
Description: Water samples were filtered to determine suspended sediment load and calibrate the CTD transmissometer. Water samples from the second near surface bottle from stations 1 and 21 were filtered suspended sediment determination. Filtrate was preserved with mercuric chloride for nutrient determination, (in addition samples at station 1 were taken for oxygen analysis).  
Biology and fisheries  
Phytoplankton pigs (eg chlorophyll, fluorescence) Quantity: number of stations = 35
Description: The Sea-Bird 911 CTD recorded downwelling fluorescence at 24 Hz. 3 m above the bed. Water samples from the second near surface bottle from stations 1 and 21 were filtered for chlorophyll  
Meteorology  
Other meteorological measurements Quantity: activity duration in days = 1
Description: Surface sampling system 3 m below sea level. Parameters recorded every minute by the WS Oceans system: Date, Solar Radiation, PAR, Air Temperature, Relative Humidity, Relative Wind Speed, Relative Wind Direction (zero indicates wind on the bow), Transmissance, Hull Temperature, Barometric Pressure, Fluorescence, Turbidity, Salinity, Minimum Air Temp, Maximum Air Temp, Wind Gust, GPS Time, Latitude, Longitude, Barometric Pressure Minimum, Barometric Pressure Maximum, Conductivity sensor water temperature  
Routine standard measurements Quantity: number of samples = 3069
Description: Sea-Bird 16plus S/N 4737 on base of frame with pumped conductivity sensor underneath. SeaPoint turbidity sensor taped to roll bar S/N 10489; set up for 0 - 125 FTU range. Sample interval 600 s; digiquartz integration time 40s, range 400; run pump 0.5s, 1 s delay.  
Routine standard measurements Quantity: number of samples = 6092
Description: Sea-Bird MicroCAT temperature and conductivity recorder Serial number 2991 (RS485) at 5m below the surface. Sample interval 600s. Reference pressure = 25dB. 3048 samples. Serial number 2506 at 10m below the surface. Sample interval 600s. Digiquartz pressure sensor. 3044 samples  

Cruise Inventory Mooring/Buoy Operations

Latitude Longitude Data type Description
53° 31' N 3° 21' W Current profiler (eg ADCP) Site A: Waves ADCP 600 kHz RDI 5807; battery pack 3285 2974 samples. Water depth 24.2m. Recovery and deployment
53° 27' N 3° 38' W Current profiler (eg ADCP) Site B: Waves ADCP 600 kHz RDI 2390. Water depth 23.5m. Recovery and deployment
53° 31' N 3° 21' W Surface drifters/drifting buoys Site A: The CEFAS SmartBuoy is fitted with one surface CTD, light sensors at 1 and 2 m below the surface, a water sampler which obtains water samples once per day for laboratory nutrient (TOXN and silicate; no filtration therefore no phosphate), fluorometer (SeaPoint), oxygen (Aanderaa Optode) and chlorophyll determination and an in situ NAS2E nutrient analyser. Water depth: 25.2m. Recovery and deployment
53° 27' N 3° 39' W Surface drifters/drifting buoys Site B: SmartBuoy Mooring fitted with a surface CTD (including turbidity and fluorescence sensors). The frame was fitted with bags for the determination of bacterial degradation. Water depth 23.6 m. Recovery and deployment

Summary of BODC Data Holdings for the Cruise

National Oceanographic Database

Summary

# Series Instrument Description Parameters
2 Acoustic doppler current profiler Date and time
Horizontal velocity of the water column (currents)
Metadata parameters
Sea level
Vertical spatial coordinates
Vertical velocity of the water column (currents)
9 Bottle station Ammonium and ammonia concentration parameters in water bodies
Metadata parameters
Nitrate concentration parameters in the water column
Nitrite concentration parameters in the water column
Phosphate concentration parameters in the water column
Quality control flags
Reference numbers
Silicate concentration parameters in the water column
Vertical spatial coordinates
9 Bottle station Chlorophyll pigment concentrations in water bodies
Metadata parameters
Phaeopigment concentrations in the water column
Quality control flags
Reference numbers
Vertical spatial coordinates
2 Fluorometers Date and time
Raw fluorometer output
Reference numbers
1 In-situ dissolved gas analyser Date and time
Dissolved oxygen parameters in the water column
Reference numbers
1 In-situ nutrient analyser Date and time
Nitrate concentration parameters in the water column
Reference numbers
2 Moored CTD Date and time
Reference numbers
Salinity of the water column
Temperature of the water column
2 Nephelometers and optical backscatter sensors Concentration of suspended particulate material in the water column
Date and time
Reference numbers
1 Surface water sample (unspecified) Date and time
Nitrate concentration parameters in the water column
Reference numbers
Silicate concentration parameters in the water column
1 radiometers Date and time
Reference numbers
Visible waveband radiance and irradiance measurements in the water column
1 radiometers Date and time
Light extinction and diffusion coefficients
Reference numbers
Visible waveband radiance and irradiance measurements in the water column

Note: Parameter terms are taken from the BODC Parameter Discovery Vocabulary XML (SKOS)

Full List

BODC Reference Instrument Description Date/Time Location  
746957 Moored CTD 2006-08-16 07:30Z to 2006-09-22 08:30Z 53° 27' N, 3° 38' W Click for more
747021 Moored CTD 2006-08-15 13:00Z to 2006-09-21 12:00Z 53° 31' N, 3° 21' W Click for more
747070 Fluorometers 2006-08-16 07:30Z to 2006-09-07 23:30Z 53° 27' N, 3° 38' W Click for more
747125 Fluorometers 2006-08-15 13:00Z to 2006-09-08 23:30Z 53° 31' N, 3° 21' W Click for more
747186 Nephelometers and optical backscatter sensors 2006-08-16 07:30Z to 2006-09-07 23:30Z 53° 27' N, 3° 38' W Click for more
747242 Nephelometers and optical backscatter sensors 2006-08-15 13:00Z to 2006-09-21 12:00Z 53° 31' N, 3° 21' W Click for more
747309 In-situ dissolved gas analyser 2006-08-15 13:00Z to 2006-09-21 12:00Z 53° 31' N, 3° 21' W Click for more
747358 radiometers 2006-08-15 13:00Z to 2006-09-08 18:30Z 53° 31' N, 3° 21' W Click for more
747414 radiometers 2006-08-15 13:00Z to 2006-09-08 18:30Z 53° 31' N, 3° 21' W Click for more
747463 In-situ nutrient analyser 2006-08-22 17:38Z to 2006-09-20 05:38Z 53° 31' N, 3° 21' W Click for more
747543 Surface water sample (unspecified) 2006-08-16 00:00Z to 2006-09-21 00:00Z 53° 31' N, 3° 21' W Click for more
1312339 Bottle station 2006-08-15 10:57Z 53° 31' N, 3° 21' W Click for more
1312340 Bottle station 2006-08-15 18:01Z 53° 27' N, 3° 22' W Click for more
1312352 Bottle station 2006-08-15 18:48Z 53° 32' N, 3° 21' W Click for more
1312364 Bottle station 2006-08-15 19:28Z 53° 37' N, 3° 22' W Click for more
1312376 Bottle station 2006-08-15 20:06Z 53° 42' N, 3° 22' W Click for more
1312388 Bottle station 2006-08-15 20:54Z 53° 47' N, 3° 22' W Click for more
1312407 Bottle station 2006-08-15 21:31Z 53° 51' N, 3° 22' W Click for more
1312419 Bottle station 2006-08-16 07:14Z 53° 27' N, 3° 39' W Click for more
1312420 Bottle station 2006-08-16 09:28Z 53° 27' N, 3° 38' W Click for more
1623328 Acoustic doppler current profiler 2006-08-15 18:50Z to 2006-09-21 10:59Z 53° 31' N, 3° 21' W Click for more
1623341 Acoustic doppler current profiler 2006-08-16 11:00Z to 2006-09-22 10:09Z 53° 27' N, 3° 38' W Click for more
1655877 Bottle station 2006-08-15 10:57Z 53° 31' N, 3° 21' W Click for more
1655889 Bottle station 2006-08-15 18:01Z 53° 27' N, 3° 22' W Click for more
1655890 Bottle station 2006-08-15 18:48Z 53° 32' N, 3° 21' W Click for more
1655908 Bottle station 2006-08-15 19:28Z 53° 37' N, 3° 22' W Click for more
1655921 Bottle station 2006-08-15 20:06Z 53° 42' N, 3° 22' W Click for more
1655933 Bottle station 2006-08-15 20:54Z 53° 47' N, 3° 22' W Click for more
1655945 Bottle station 2006-08-15 21:31Z 53° 51' N, 3° 22' W Click for more
1655957 Bottle station 2006-08-16 07:14Z 53° 27' N, 3° 39' W Click for more
1655969 Bottle station 2006-08-16 09:28Z 53° 27' N, 3° 38' W Click for more

Project Database

# Events Gear Type Parameters Held
35 CTD frame plus rosette sampler Ammonium and ammonia concentration parameters in water bodies
Raw suspended particulate material concentration sensor output
Transmittance and attenuance of the water column
Visible waveband radiance and irradiance measurements in the water column
Density of the water column
Chlorophyll pigment concentrations in water bodies
Silicate concentration parameters in the water column
Raw fluorometer output
Salinity of the water column
Concentration of suspended particulate material in the water column
Nitrate concentration parameters in the water column
Temperature of the water column
Raw light meter output
Phaeopigment concentrations in the water column
Nitrite concentration parameters in the water column
Phosphate concentration parameters in the water column
Dissolved oxygen parameters in the water column
4 Instrument mooring

Note: Parameter terms are taken from the BODC Parameter Discovery Vocabulary XML (SKOS)

References

Track Charts

Track Chart

Reports

Cruise Report