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BODC Cruise Metadata Report for RV Prince Madog (74P2) cruise PD12/06

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 PD12/06
Short name PD12/06
Objectives and Narrative Objectives

1. At 53 32N 3 21.8W, half a mile west of the Mersey Bar Light Vessel (site A)
To recover: (a) A directional wave buoy.
To deploy: b) A directional wave buoy (c) A nutrient analyser in a sea bed frame measuring nitrate and phosphate four times a semi-diurnal tidal cycle.

2. At 53 27N 3 38.6 W (site 21, second site, B)
To recover: (d) A sea bed frame for a 600 kHz ADCP (waves ADCP) to measure the mean current profile, pressures and directional waves. A Sea-Bird SBE 16plus with pumped conductivity sensor, digiquartz pressure sensor and a SeaPoint turbidity sensor were fitted to the frame. A 1.2 MHz telemetry ADCP was fitted to the frame (e) A CEFAS SmartBuoy in a single point mooring.
To deploy: (f) A sea bed frame for a 600 kHz ADCP (waves ADCP) to measure the mean current profile, pressures and directional waves. A Sea-Bird SBE 16plus with pumped conductivity sensor, digiquartz pressure sensor and a SeaPoint turbidity sensor are fitted to the frame. A 1.2 MHz telemetry ADCP is fitted to the frame (g) A CEFAS SmartBuoy 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. To obtain calibration samples for salinity, transmittance, suspended sediment and for chlorophyll at selected stations. To obtain near surface and bed water samples for nutrient and suspended sediment determination.

4. Collect 10 vertical net hauls at mooring site A
Ship RV Prince Madog
Departure Port Menai Bridge, United Kingdom
Departure Date 2006-04-05
Arrival Port Menai Bridge, United Kingdom
Arrival Date 2006-04-07
Principal Scientist(s) M John Howarth (Proudman Oceanographic Laboratory)
Responsible Organisation NIWA-OTAGO
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/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 temperature and conductivity. Measurements were taken to within an estimated 3 m above the bed  
Optics (eg underwater light levels) Quantity: number of stations = 35
Description: The Sea-Bird 911 CTD recorded downwelling PAR light levels (CEFAS light sensor) and transmittance. Measurements were taken to within an estimated 3 m above the bed  
Surface measurements underway (T,S) Quantity: number of stations = 36
Description: Sea surface temperature, salinity and transmittance were calibrated against the CTD by BODC.  
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 oxygen (no calibration samples) Measurements were taken to within an estimated 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 = 35
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 taken from the near surface and near bed bottles were filtered to determine suspended sediment load and calibrate the CTD transmissometer. Water samples from the second near surface bottle from stations 1, 5-9 and 11 were filtered and suspended sediment determination and some filtrate was preserved with mercuric chloride for nutrient determination.  
Biology and fisheries  
Phytoplankton pigs (eg chlorophyll, fluorescence) Quantity: number of stations = 35
Description: The Sea-Bird 911 CTD recorded fluorescence at 24 Hz. Measurements were taken to within an estimated 3 m above the bed. Water samples from the second near surface bottle from stations 1, 5-9 and 11 were filtered for chlorophyll  
Meteorology  
Other meteorological measurements Quantity: activity duration in days = 2
Description: Measurements taken by the WS Oceans surface sampling system 3 m below sea level over 2 days. Parameters recorded were 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, and Conductivity sensor water temperature  

Cruise Inventory Mooring/Buoy Operations

Latitude Longitude Data type Description
53° 27' N 3° 38' W Current profiler (eg ADCP) Site B: Telemetry ADCP 1.2MHz RDI 6489. LinkQuest modem. The frame D1 was fitted with two Benthos releases (serial number 72850) - Rx 11.5 kHz, Tx 12.0 kHz, release C and (serial number 71904) - Rx 10.0 kHz, Tx 12.0 kHz, release C both with a fizz link, and a spooler with 200m of rope for recovery of the ballast weight. Recovery and Deployment
53° 27' N 3° 38' W Current profiler (eg ADCP) Site B: Waves ADCP 600 kHz RDI 5803. Mode 1: 100 pings every 10 minutes (velocity standard deviation 0.007 m s-1). 35 x 1 m bins (2.65 - 36.65 m above the bed). Fitted with a pressure sensor and 1Gbyte PCMCIA memory; hourly wave recording enabled. Smart Buoy
53° 27' N 3° 38' W Sea level (inc. bot. press., inverted echosounder) Site B: Sea-Bird 16plus S/N 4738 on base of frame with pumped conductivity sensor underneath Waves ADCP. SeaPoint turbidity sensor: S/N 10320 taped to roll bar; set up for 0 - 25 FTU range. Sample interval 600 s. Recovery and Deployment
53° 27' N 3° 38' W Surface drifters/drifting buoys Site B: Smart Buoy Recovered. The CEFAS SmartBuoy deployed was fitted with a surface CTD (including turbidity and fluorescence sensors). A CTD with turbidity sensor was fitted in a cage at 10 m below the surface

Summary of BODC Data Holdings for the Cruise

National Oceanographic Database

Summary

# Series Instrument Description Parameters
1 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
1 Fluorometers Date and time
Raw fluorometer output
Reference numbers
1 Moored CTD Date and time
Reference numbers
Salinity of the water column
Temperature of the water column
1 Nephelometers and optical backscatter sensors Concentration of suspended particulate material in the water column
Date and time
Reference numbers

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

Full List

BODC Reference Instrument Description Date/Time Location  
700308 Moored CTD 2006-04-05 14:00Z to 2006-05-11 11:30Z 53° 27' N, 3° 37' W Click for more
700370 Fluorometers 2006-04-05 14:00Z to 2006-05-11 11:30Z 53° 27' N, 3° 37' W Click for more
700437 Nephelometers and optical backscatter sensors 2006-04-05 14:00Z to 2006-05-11 11:30Z 53° 27' N, 3° 37' W Click for more
1342151 Bottle station 2006-04-05 09:53Z 53° 27' N, 3° 37' W Click for more
1342163 Bottle station 2006-04-05 14:03Z 53° 26' N, 3° 36' W Click for more
1342175 Bottle station 2006-04-05 16:27Z 53° 31' N, 3° 21' W Click for more
1342187 Bottle station 2006-04-05 23:46Z 53° 51' N, 3° 21' W Click for more
1342199 Bottle station 2006-04-06 00:36Z 53° 47' N, 3° 21' W Click for more
1342206 Bottle station 2006-04-06 01:29Z 53° 42' N, 3° 22' W Click for more
1342218 Bottle station 2006-04-06 02:17Z 53° 37' N, 3° 22' W Click for more
1342231 Bottle station 2006-04-06 03:05Z 53° 31' N, 3° 22' W Click for more
1342243 Bottle station 2006-04-06 03:56Z 53° 27' N, 3° 22' W Click for more
1623168 Acoustic doppler current profiler 2006-04-05 13:20Z to 2006-05-11 12:20Z 53° 27' N, 3° 38' W Click for more
1660855 Bottle station 2006-04-05 09:53Z 53° 27' N, 3° 37' W Click for more
1660867 Bottle station 2006-04-05 14:03Z 53° 26' N, 3° 36' W Click for more
1660879 Bottle station 2006-04-05 16:27Z 53° 31' N, 3° 21' W Click for more
1660880 Bottle station 2006-04-05 23:46Z 53° 51' N, 3° 21' W Click for more
1660892 Bottle station 2006-04-06 00:36Z 53° 47' N, 3° 21' W Click for more
1660911 Bottle station 2006-04-06 01:29Z 53° 42' N, 3° 22' W Click for more
1660923 Bottle station 2006-04-06 02:17Z 53° 37' N, 3° 22' W Click for more
1660935 Bottle station 2006-04-06 03:05Z 53° 31' N, 3° 22' W Click for more
1660947 Bottle station 2006-04-06 03:56Z 53° 27' N, 3° 22' W Click for more

Project Database

# Events Gear Type Parameters Held
2 Instrument mooring
36 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

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

References

Track Charts

Track Chart

Reports

Cruise Report