Cruise inventory

RV Prince Madog PD12/06

Cruise summary report

Cruise Info. 
Ship name (ship code)RV Prince Madog (74P2)
Cruise identifierPD12/06
Cruise period2006-04-05 — 2006-04-07
StatusCompleted
Port of departureMenai Bridge, United Kingdom
Port of returnMenai Bridge, United Kingdom
PurposeResearch
ObjectivesObjectives

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
Chief scientistM John Howarth (Proudman Oceanographic Laboratory)
ProjectPOL Coastal Observatory
Cruise reportRV Prince Madog PD12/06 cruise report pd12_06.pdf — access key 'C' (0.09 MB) 
Ocean/sea areas 
GeneralIrish Sea and St. George's Channel
SpecificLiverpool Bay/Eastern Irish Sea
Track chartsRV Prince Madog PD12/06 cruise track — pd12_06trk.pdf (00 MB) 
Measurements 
Physical oceanography 
Surface measurements underway (T,S)Quantity: number of stations = 36
Description: Sea surface temperature, salinity and transmittance were calibrated against the CTD by BODC.
CTD stationsQuantity: 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
Chemical oceanography 
OxygenQuantity: 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
PhosphateQuantity: number of stations = 35
Description: Water samples were taken from the near surface and near bed bottles and frozen for nutrient analysis by NOC.
NitrateQuantity: number of stations = 35
Description: Water samples were taken from the near surface and near bed bottles and frozen for nutrient analysis by NOC
SilicateQuantity: 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 matterQuantity: 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 measurementsQuantity: 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
Moorings, landers, buoys 
Physical oceanography 
Current profiler (eg ADCP)53° 27' 0" N  3° 38' 26" W — 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
Current profiler (eg ADCP)53° 27' 0" N  3° 38' 26" W — 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
Surface drifters/drifting buoys53° 26' 59" N  3° 38' 25" W — 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
Sea level (inc. bot. press., inverted echosounder)53° 27' 0" N  3° 38' 26" W — 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
Data held at BODC 
Series/Profiles 
1  Acoustic doppler current profiler
Sea level
Vertical velocity of the water column (currents)
Metadata parameters
Vertical spatial coordinates
Horizontal velocity of the water column (currents)
Date and time
Sea level
Vertical velocity of the water column (currents)
Metadata parameters
Vertical spatial coordinates
Horizontal velocity of the water column (currents)
Date and time

BODC idDate/TimeLocationDoc.
16231682006-04-05 13:20  — 2006-05-11 12:20 53° 26' 51" N  3° 38' 16" W  View metadata report for BODC series reference number 1623168
18  Bottle station
Quality control flags
Ammonium and ammonia concentration parameters in water bodies
Chlorophyll pigment concentrations in water bodies
Metadata parameters
Silicate concentration parameters in the water column
Vertical spatial coordinates
Nitrate concentration parameters in the water column
Phaeopigment concentrations in the water column
Reference numbers
Nitrite concentration parameters in the water column
Phosphate concentration parameters in the water column
Quality control flags
Ammonium and ammonia concentration parameters in water bodies
Chlorophyll pigment concentrations in water bodies
Metadata parameters
Silicate concentration parameters in the water column
Vertical spatial coordinates
Nitrate concentration parameters in the water column
Phaeopigment concentrations in the water column
Reference numbers
Nitrite concentration parameters in the water column
Phosphate concentration parameters in the water column

BODC idDate/TimeLocationDoc.
13421512006-04-05 09:53 53° 26' 56" N  3° 37' 55" W  View metadata report for BODC series reference number 1342151
13421632006-04-05 14:03 53° 26' 30" N  3° 36' 17" W  View metadata report for BODC series reference number 1342163
13421752006-04-05 16:27 53° 31' 51" N  3° 21' 20" W  View metadata report for BODC series reference number 1342175
13421872006-04-05 23:46 53° 51' 52" N  3° 21' 44" W  View metadata report for BODC series reference number 1342187
13421992006-04-06 00:36 53° 47' 7" N  3° 21' 48" W  View metadata report for BODC series reference number 1342199
13422062006-04-06 01:29 53° 41' 59" N  3° 22' 0" W  View metadata report for BODC series reference number 1342206
13422182006-04-06 02:17 53° 37' 5" N  3° 21' 56" W  View metadata report for BODC series reference number 1342218
13422312006-04-06 03:05 53° 32' 3" N  3° 22' 52" W  View metadata report for BODC series reference number 1342231
13422432006-04-06 03:56 53° 26' 58" N  3° 22' 33" W  View metadata report for BODC series reference number 1342243
16608552006-04-05 09:53 53° 26' 56" N  3° 37' 55" W  View metadata report for BODC series reference number 1660855
16608672006-04-05 14:03 53° 26' 30" N  3° 36' 17" W  View metadata report for BODC series reference number 1660867
16608792006-04-05 16:27 53° 31' 51" N  3° 21' 20" W  View metadata report for BODC series reference number 1660879
16608802006-04-05 23:46 53° 51' 52" N  3° 21' 44" W  View metadata report for BODC series reference number 1660880
16608922006-04-06 00:36 53° 47' 7" N  3° 21' 48" W  View metadata report for BODC series reference number 1660892
16609112006-04-06 01:29 53° 41' 59" N  3° 22' 0" W  View metadata report for BODC series reference number 1660911
16609232006-04-06 02:17 53° 37' 5" N  3° 21' 56" W  View metadata report for BODC series reference number 1660923
16609352006-04-06 03:05 53° 32' 3" N  3° 22' 52" W  View metadata report for BODC series reference number 1660935
16609472006-04-06 03:56 53° 26' 58" N  3° 22' 33" W  View metadata report for BODC series reference number 1660947
1  Fluorometers
Raw fluorometer output
Reference numbers
Date and time
Raw fluorometer output
Reference numbers
Date and time

BODC idDate/TimeLocationDoc.
7003702006-04-05 14:00  — 2006-05-11 11:30 53° 26' 43" N  3° 37' 40" W  View metadata report for BODC series reference number 700370
1  Moored CTD
Salinity of the water column
Temperature of the water column
Reference numbers
Date and time
Salinity of the water column
Temperature of the water column
Reference numbers
Date and time

BODC idDate/TimeLocationDoc.
7003082006-04-05 14:00  — 2006-05-11 11:30 53° 26' 43" N  3° 37' 40" W  View metadata report for BODC series reference number 700308
1  Nephelometers and optical backscatter sensors
Concentration of suspended particulate material in the water column
Reference numbers
Date and time
Concentration of suspended particulate material in the water column
Reference numbers
Date and time

BODC idDate/TimeLocationDoc.
7004372006-04-05 14:00  — 2006-05-11 11:30 53° 26' 43" N  3° 37' 40" W  View metadata report for BODC series reference number 700437
Discrete samples 
36  CTD frame plus rosette samplerAmmonium and ammonia concentration parameters in water bodies
Raw suspended particulate material concentration sensor output
Density of the water column
Transmittance and attenuance of the water column
Visible waveband radiance and irradiance measurements in 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
Raw light meter output
Nitrate concentration parameters in the water column
Temperature of the water column
Phaeopigment concentrations in the water column
Nitrite concentration parameters in the water column
Phosphate concentration parameters in the water column