Resources

RV Prince Madog PD31/03

Cruise summary report

Cruise Info. 
Ship name (ship code)RV Prince Madog (74P2)
Cruise identifierPD31/03
Cruise period2003-07-24 — 2003-07-25
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.
D) A CEFAS SmartBuoy in a single point mooring with an Aanderaa temperature and conductivity logger at 10 m below the surface.
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 suspended sediment at all stations and for chlorophyll at selected stations.

All of the mooring objectives were achieved, 32 out of 34 CTD sites were visited and 3 grab samples were obtained.
Chief scientistPhil J Knight (Proudman Oceanographic Laboratory)
Cruise reportRV Prince Madog PD31/03 cruise report pd31_03.pdf (0.14 MB) 
Ocean/sea areas 
GeneralIrish Sea and St. George's Channel
Specificeastern Irish Sea
Measurements 
Physical oceanography 
Water bottle stationsQuantity: number of stations = 24
Description: Water bottle samples taken to be filtered for chlorophyll and suspended sediment determination.
CTD stationsQuantity: number of stations = 32
Description: surveyed to dertermine the effects of the rivers Dee, Mersey and Ribble on Liverpool Bay
Contamination 
Suspended matterQuantity: number of stations = 32
Description: surveyed using LISST-25 particle sizer.
Geology and geophysics 
GrabQuantity: number of samples = 3
Description: grab samples taken using the Shipek grab.
Moorings, landers, buoys 
Physical oceanography 
Current profiler (eg ADCP)53° 32' 10" N  3° 21' 57" W — A sea bed frame for a 600 kHz ADCP was deployed 24/07/2003 to measure the mean current profile, pressures and directional waves.
Current profiler (eg ADCP)53° 32' 18" N  3° 21' 56" W — A sea bed frame for a 600 kHz ADCP was recovered 24/07/2003 having measured the mean current profile, pressures and directional waves.
Other physical oceanographic measurements53° 32' 18" N  3° 22' 12" W — A CEFAS SmartBuoy in a single point mooring was recovered 24/07/2003.
Other physical oceanographic measurements53° 32' 12" N  3° 22' 2" W — A CEFAS SmartBuoy in a single point mooring was deployed 24/07/2003.
Data held at BODC Get data
Discrete samples 
33  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
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
Temperature of the water column
Nitrate concentration parameters in the water column
Phosphate concentration parameters in the water column
Phaeopigment concentrations in the water column
Nitrite concentration parameters in the water column
2  Instrument mooring