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RV Prince Madog PD34/03

Cruise summary report

Cruise Info. 
Ship name (ship code)RV Prince Madog (74P2)
Cruise identifierPD34/03
Cruise period2003-08-20 — 2003-08-21
StatusCompleted
Port of departureMenai Bridge, United Kingdom
Port of returnMenai Bridge, United Kingdom
PurposeResearch
ObjectivesObjectives
1. At 53° 32'N 3° 21.8'W, half a mile west of the Mersey Bar Light Vessel
To recover: (a) A sea bed frame for a 600 kHz ADCP to measure the mean current profile, pressures and directional waves. A pressure recorder, a transmissometer/ conductivity/temperature logger and a SeaBird MicroCAT are fitted to the frame (b) A CEFAS SmartBuoy in a single point mooring with an Aanderaa temperature and conductivity logger at 10 m below the surface.
To deploy: (c) A sea bed frame for a 600 kHz ADCP to measure the mean current profile, pressures and directional waves. A pressure recorder, a transmissometer/ conductivity/temperature logger and a SeaBird MicroCAT are also fitted to the frame. In addition, a 1.2 MHz ADCP interfaced to a SeaBird MicroCAT (RS-485 interface) was fitted for trial purposes (d) A CEFAS SmartBuoy in a single point mooring with an Aanderaa temperature and conductivity logger at 10 m below the surface (e) A toroid with Orbcomm instrumentation in trial mode.
2. To conduct a CTD/LISST survey of 34 stations 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 and for chlorophyll at selected stations.

All of the mooring objectives were accomplished and all 34 CTD sites were visited.
Chief scientistRoger Proctor (Proudman Oceanographic Laboratory)
Cruise reportRV Prince Madog PD34/03 cruise report pd34_03.pdf (0.15 MB) 
Ocean/sea areas 
GeneralIrish Sea and St. George's Channel
Specificeastern Irish Sea
Measurements 
Physical oceanography 
Water bottle stationsQuantity: number of stations = 7
Description: Water bottle samples taken to be filtered for chlorophyll and suspended sediment determination.
CTD stationsQuantity: number of stations = 34
Description: surveyed to determine the effects of the rivers Dee, Mersey and Ribble on Liverpool Bay.
Contamination 
Suspended matterQuantity: number of stations = 34
Description: surveyed using LISST-25 particle sizer.
Moorings, landers, buoys 
Physical oceanography 
Current profiler (eg ADCP)53° 32' 9" N  3° 21' 44" W — A sea bed frame for a 600 kHz ADCP was deployed 20/08/2003 to measure the mean current profile, pressures and directional waves.
Current profiler (eg ADCP)53° 32' 10" N  3° 21' 57" W — A sea bed frame for a 600 kHz ADCP was recovered 20/08/2003 having measured the mean current profile, pressures and directional waves.
Other physical oceanographic measurements53° 32' 12" N  3° 22' 2" W — A CEFAS SmartBuoy in a single point mooring was recovered 20/08/2003.
Other physical oceanographic measurements53° 32' 4" N  3° 22' 0" W — A CEFAS SmartBuoy in a single point mooring was deployed 20/08/2003.
Other physical oceanographic measurements53° 31' 57" N  3° 21' 19" W — A toroid with Orbcomm instrumentation in trial mode was deployed 20/08/2003.
Data held at BODC Get data
Discrete samples 
36  CTD frame plus rosette samplerTransmittance and attenuance of the water column
Nitrite concentration parameters in the water column
Temperature of the water column
Phosphate concentration parameters in the water column
Salinity of the water column
Concentration of suspended particulate material in the water column
Silicate concentration parameters in the water column
Density of the water column
Ammonium and ammonia concentration parameters in water bodies
Raw suspended particulate material concentration sensor output
Raw fluorometer output
Nitrate concentration parameters in the water column
Phaeopigment concentrations in the water column
Chlorophyll pigment concentrations in water bodies
3  Instrument mooring