Resources

RV Prince Madog PD25/03B

Cruise summary report

Cruise Info. 
Ship name (ship code)RV Prince Madog (74P2)
Cruise identifierPD25/03B
Cruise period2003-06-26 — 2003-06-27
StatusCompleted
Port of departureBirkenhead, 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 the cruise objectives, mooring and CTD were successfully accomplished.
Chief scientistM John Howarth (Proudman Oceanographic Laboratory)
Cruise reportRV Prince Madog PD25/03B cruise report pd25_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 = 7
Description: Water bottle samples 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' 13" N  3° 22' 0" W — A sea bed frame for a 600 kHz ADCP was recovered 26/06/2003 having measured the mean current profile, pressures and directional waves.
Current profiler (eg ADCP)53° 32' 9" N  3° 21' 56" W — A sea bed frame for a 600 kHz ADCP was deployed 26/06/2003 to measure the mean current profile, pressures and directional waves.
Other physical oceanographic measurements53° 32' 17" N  3° 22' 16" W — A CEFAS SmartBuoy in a single point mooring was deployed 26/06/2003.
Other physical oceanographic measurements53° 32' 24" N  3° 22' 28" W — A CEFAS SmartBuoy in a single point mooring was recovered 26/06/2003.
Data held at BODC Get data
Discrete samples 
32  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
Raw fluorometer output
Silicate concentration parameters in the water column
Concentration of suspended particulate material in the water column
Salinity of the water column
Temperature of the water column
Nitrate concentration parameters in the water column
Nitrite concentration parameters in the water column
Phosphate concentration parameters in the water column
Phaeopigment concentrations in the water column
2  Instrument mooring