RV Prince Madog PD23/03A

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Cruise Info.

Ship name (ship code)

RV Prince Madog (74P2)

Cruise identifier

PD23/03A

Cruise period

2003-05-26 — 2003-05-27

Status

Completed

Port of departure

Menai Bridge, United Kingdom

Port of return

Menai Bridge, United Kingdom

Purpose

Research

Objectives

A. At 53° 32'N 3° 21.8'W, half a mile west of the Mersey Bar Light Vessel:

To recover: (1) 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; (2) A sea bed frame for a 1.2 MHz ADCP to measure fast sample current profiles and pressures; (3) A CEFAS SmartBuoy in a single point mooring with an Aanderaa temperature and conductivity logger at 10 m below the surface; (4) A CEFAS wave buoy; (5) A trial spar buoy mooring.

To deploy: (1) 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; (2) A CEFAS SmartBuoy in a single point mooring with an Aanderaa temperature and conductivity logger at 10 m below the surface; (3) A CEFAS wave buoy (recovered at 4)).

B. 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.

C. To obtain grab samples at stations 23-24 for the University of Lancaster.

All the mooring objectives were achieved, 32 out of 34 CTD sites were visited and 9 out of 12 grab samples were obtained.

Chief scientist

M John Howarth (Proudman Oceanographic Laboratory)

Cruise report

(0.16 MB)

Ocean/sea areas

General

Irish Sea and St. George's Channel

Specific

eastern Irish Sea

Measurements

Physical oceanography

Water bottle stations

Quantity: number of stations = 7
Description: Water bottle samples taken to be filtered for chlorophyll and suspended sediment determination.

CTD stations

Quantity: number of stations = 32
Description: To determine the effects of the rivers, Dee, Mersey and Ribble on Liverpool Bay.

Contamination

Suspended matter

Quantity: number of stations = 32
Description: surveyed using LISST-25 particle sizer.

Geology and geophysics

Grab

Quantity: number of stations = 9

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 deployed 26/05/2003 to measure the mean current profile, pressures and directional waves.

Current profiler (eg ADCP)

53° 32' 2" N 3° 21' 23" W — A sea bed frame for a 1.2 MHz ADCP was recovered 26/05/2003 having measured fast sample current profiles and pressures.

Current profiler (eg ADCP)

53° 32' 12" N 3° 22' 16" W — A sea bed frame for a 600 kHz ADCP was recovered 26/05/2003 having measured the mean current profile, pressures and directional waves.

Instrumented wave measurements

53° 32' 9" N 3° 21' 21" W — A CEFAS wave buoy was deployed 26/05/2003, to be recovered later on same day.

Instrumented wave measurements

53° 32' 1" N 3° 22' 17" W — A CEFAS WaveBuoy was recovered 26/05/2003.

Other physical oceanographic measurements

53° 32' 24" N 3° 22' 28" W — A CEFAS SmartBuoy in a single point mooring was deployed 26/05/2003.

Other physical oceanographic measurements

53° 32' 13" N 3° 21' 48" W — A trial spar buoy mooring was recovered 26/05/2003.

Other physical oceanographic measurements

53° 32' 16" N 3° 22' 18" W — A CEFAS SmartBuoy in a single point mooring was recovered 26/05/2003.

Data held at BODC

Get data

Series/Profiles

1 Acoustic doppler current profiler

Date and time
Vertical spatial coordinates
Vertical velocity of the water column (currents)
Horizontal velocity of the water column (currents)
Metadata parameters
Sea level

[Show series]

Date and time
Vertical spatial coordinates
Vertical velocity of the water column (currents)
Horizontal velocity of the water column (currents)
Metadata parameters
Sea level

[Hide series]

BODC id	Date/Time	Location	Doc.
1622780	2003-05-26 14:30 — 2003-06-26 09:00	53° 32' 13" N 3° 22' 0" W

16 Bottle station

Reference numbers
Nitrite concentration parameters in the water column
Phosphate concentration parameters in the water column
Vertical spatial coordinates
Silicate concentration parameters in the water column
Phaeopigment concentrations in the water column
Nitrate concentration parameters in the water column
Quality control flags
Chlorophyll pigment concentrations in water bodies

[Show series]

[Hide series]

BODC id	Date/Time	Location
1678378	2003-05-26 11:06	53° 31' 59" N 3° 22' 40" W
1678422	2003-05-26 21:57	53° 42' 2" N 3° 22' 7" W
1678458	2003-05-27 00:05	53° 26' 58" N 3° 22' 49" W
1310646	2003-05-26 21:15	53° 47' 12" N 3° 21' 50" W
1678410	2003-05-26 21:15	53° 47' 12" N 3° 21' 50" W
1310658	2003-05-26 21:57	53° 42' 2" N 3° 22' 7" W
1310683	2003-05-26 23:22	53° 31' 56" N 3° 23' 19" W
1678446	2003-05-26 23:22	53° 31' 56" N 3° 23' 19" W
1678391	2003-05-26 16:29	53° 32' 15" N 3° 21' 24" W
1678434	2003-05-26 22:37	53° 37' 12" N 3° 22' 21" W
1310671	2003-05-26 22:37	53° 37' 12" N 3° 22' 21" W
1310695	2003-05-27 00:05	53° 26' 58" N 3° 22' 49" W
1310610	2003-05-26 11:06	53° 31' 59" N 3° 22' 40" W
1678409	2003-05-26 20:36	53° 51' 50" N 3° 21' 53" W
1310622	2003-05-26 16:29	53° 32' 15" N 3° 21' 24" W
1310634	2003-05-26 20:36	53° 51' 50" N 3° 21' 53" W

1 Bottom pressure sensor tide gauge

Reference numbers
Date and time
Temperature of the water column
Sea level

[Show series]

Reference numbers
Date and time
Temperature of the water column
Sea level

[Hide series]

BODC id	Date/Time	Location	Doc.
646041	2003-05-26 14:39:40 — 2003-06-26 08:59:40	53° 32' 13" N 3° 22' 0" W

1 Fluorometers

Reference numbers
Date and time
Raw fluorometer output
Chlorophyll pigment concentrations in water bodies

[Show series]

Reference numbers
Date and time
Raw fluorometer output
Chlorophyll pigment concentrations in water bodies

[Hide series]

BODC id	Date/Time	Location	Doc.
1193498	2003-05-26 15:00 — 2003-06-26 11:00	53° 32' 24" N 3° 22' 28" W

2 Moored CTD

Reference numbers
Date and time
Salinity of the water column
Temperature of the water column
Electrical conductivity of the water column
Sea level

[Show series]

Reference numbers
Date and time
Salinity of the water column
Temperature of the water column
Electrical conductivity of the water column
Sea level

[Hide series]

BODC id	Date/Time	Location	Doc.
646169	2003-05-26 14:30:21 — 2003-06-26 08:50:21	53° 32' 13" N 3° 22' 0" W
1193486	2003-05-26 15:00 — 2003-06-26 11:00	53° 32' 24" N 3° 22' 28" W

1 Nephelometers and optical backscatter sensors

Reference numbers
Date and time
Concentration of suspended particulate material in the water column

[Show series]

Reference numbers
Date and time
Concentration of suspended particulate material in the water column

[Hide series]

BODC id	Date/Time	Location	Doc.
1193505	2003-05-26 15:00 — 2003-06-26 11:00	53° 32' 24" N 3° 22' 28" W

2 Paddle wheel current meter

Reference numbers
Transmittance and attenuance of the water column
Date and time
Salinity of the water column
Temperature of the water column
Electrical conductivity of the water column
Sea level

[Show series]

Reference numbers
Transmittance and attenuance of the water column
Date and time
Salinity of the water column
Temperature of the water column
Electrical conductivity of the water column
Sea level

[Hide series]

BODC id	Date/Time	Location	Doc.
646298	2003-05-26 14:35 — 2003-06-26 08:55	53° 32' 13" N 3° 22' 0" W
646157	2003-05-26 15:55 — 2003-06-26 08:55	53° 32' 24" N 3° 22' 28" W

2 radiometers

Reference numbers
Date and time
Visible waveband radiance and irradiance measurements in the water column

[Show series]

Reference numbers
Date and time
Visible waveband radiance and irradiance measurements in the water column

[Hide series]

BODC id	Date/Time	Location	Doc.
1193529	2003-05-26 15:00 — 2003-06-26 11:00	53° 32' 24" N 3° 22' 28" W
1193517	2003-05-26 15:00 — 2003-06-26 11:00	53° 32' 24" N 3° 22' 28" W

Discrete samples

32 CTD frame plus rosette sampler

Transmittance and attenuance of the water column
Nitrite concentration parameters in the water column
Phosphate concentration parameters in the water column
Salinity of the water column
Temperature 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
Phaeopigment concentrations in the water column
Raw suspended particulate material concentration sensor output
Raw fluorometer output
Nitrate concentration parameters in the water column
Chlorophyll pigment concentrations in water bodies

2 Instrument mooring

Resources

RV Prince Madog PD23/03A

Cruise summary report

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