RV Prince Madog PD35/06

Cruise summary report

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Cruise Info.

Ship name (ship code)

RV Prince Madog (74P2)

Cruise identifier

PD35/06

Cruise period

2006-11-01 — 2006-11-02

Status

Completed

Port of departure

Menai Bridge, United Kingdom

Port of return

Menai Bridge, United Kingdom

Purpose

Research

Objectives

Objectives
(1) At 53 degrees 32 minutes N 3 degrees 21.8 minutes W, half a mile west of the Mersey Bar Light Vessel (site A)
To recover: (a) A sea bed frame for a 600 kHz ADCP (waves ADCP) to measure the mean current profile, pressures and directional waves (b) A CEFAS SmartBuoy (with cellulose bags) in a single point mooring with Sea-Bird MicroCAT temperature, conductivity loggers at 5m and 10m below the surface.
To deploy: (c) A sea bed frame for a 600 kHz ADCP (waves ADCP) to measure the mean current profile, pressures and directional waves (d) A CEFAS SmartBuoy (with cellulose bags) in a single point mooring with Sea-Bird MicroCAT temperature, conductivity loggers at 5m and 10m below the surface.

2) At 53 degrees 27 minutes N 3 degrees 38.6 minutes W (site 21, second site, B)
To recover: (e) A sea bed frame for a 600 kHz ADCP (waves ADCP) to measure the mean current profile, pressures and directional waves (f) A CEFAS SmartBuoy (with cellulose bags) in a single point mooring.
To deploy: (g) A sea bed frame for a 600 kHz ADCP (waves ADCP) to measure the mean current profile, pressures and directional waves (h) A CEFAS SmartBuoy (with cellulose bags) 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.
4. To obtain calibration samples for salinity, transmittance, suspended sediment and for chlorophyll at selected stations.
5. To obtain near surface and bed water samples for nutrient and suspended sediment determination.
6. Collect 10 vertical net hauls at mooring site A.

Chief scientist

Phil J Knight (Proudman Oceanographic Laboratory)

Cruise report

(0.18 MB)

Ocean/sea areas

General

Irish Sea and St. George's Channel

Specific

Mersey Bar site

Track charts

(0.11 MB)

Measurements

Physical oceanography

Water bottle stations

Quantity: number of stations = 34
Description: Water samples were taken from a near bed bottle for calibration of the CTD salinity data.

CTD stations

Quantity: number of stations = 35
Description: Sea-Bird 911 CTD recorded temperature and conductivity. Measurements were taken to within an estimated 3 m above the bed.

Transparency (eg transmissometer)

Quantity: number of stations = 34
Description: Sea-Bird 911 CTD recorded transmittance. Measurements were taken to within an estimated 3 m above the bed

Optics (eg underwater light levels)

Quantity: number of stations = 34
Description: Sea-Bird 911 CTD recorded downwelling PAR light levels. Measurements were taken to within an estimated 3 m above the bed

Chemical oceanography

Oxygen

Quantity: number of stations = 34
Description: Sea-Bird 911 CTD recorded oxygen (no calibration samples). Measurements were taken to within an estimated 3 m above the bed

Phosphate

Quantity: number of stations = 34
Description: Water samples were taken from the near surface and near bed bottles and frozen for nutrient analysis by NOC

Nitrate

Quantity: number of stations = 34
Description: Water samples were taken from the near surface and near bed bottles and frozen for nutrient analysis by NOC

Silicate

Quantity: number of stations = 34
Description: Water samples were taken from the near surface and near bed bottles and frozen for nutrient analysis by NOC

Contamination

Suspended matter

Quantity: number of stations = 34
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 and 21 were filtered for 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 = 34
Description: Sea-Bird 911 CTD recorded fluorescence at 24 Hz. Water samples from the second near surface bottle from stations 1 and 21 were filtered for chlorophyll

Meteorology

Other meteorological measurements

Quantity: activity duration in days = 1
Description: WS Oceans surface sampling system 3 m below sea level. Parameters recorded every minute: 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 (mbar), Conductivity sensor water temperature.

Moorings, landers, buoys

Physical oceanography

CTD stations

53° 32' 2" N 3° 21' 35" W — Site A: The CEFAS SmartBuoy is fitted with a surface CTD. Recovery and deployment

Optics (eg underwater light levels)

53° 32' 2" N 3° 21' 35" W — Site A: The CEFAS SmartBuoy is fitted light sensors at 1 and 2 m below the surface. Recovery and deployment

Current profiler (eg ADCP)

53° 32' 1" N 3° 21' 30" W — Site A: Waves ADCP 600 kHz RDI 5806. 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 1 Gbyte PCMCIA memory; hourly wave recording enabled. Recovery and deployment

Current profiler (eg ADCP)

53° 27' 0" N 3° 38' 38" W — Site B: Waves ADCP 600 kHz RDI 5807. 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. Recovery and deployment

Current profiler (eg ADCP)

53° 27' 0" N 3° 38' 38" W — Site B: Telemetry ADCP 1200 kHz RDI 3052. Mode 1: 100 pings every 10 minutes (velocity standard deviation 0.003 m s-1). 30 x 1 m bins (2.15 - 31.15 m above the bed). LinkQuest acoustic modem set for transmission of ADCP data every hour. Deployment

Surface drifters/drifting buoys

53° 32' 2" N 3° 21' 35" W — Site A: The CEFAS SmartBuoy is fitted with an in situ NAS2E nutrient analyser. The frame was fitted with cellulose bags for the determination of bacterial degradation. Recovery and deployment

Sea level (inc. bot. press., inverted echosounder)

53° 32' 1" N 3° 21' 30" W — Site A: Sea-Bird 16plus S/N 4737 on base of frame with pumped conductivity sensor underneath. SeaPoint turbidity sensor S/N 10489 taped to roll bar; set up for 0 - 125 FTU range. Sample interval 600 s; pump 0.5s, 1 s delay. Recovery and deployment

Sea level (inc. bot. press., inverted echosounder)

53° 27' 0" N 3° 38' 38" W — Site B: Sea-Bird 16plus S/N 4597 on base of frame with pumped conductivity sensor underneath. SeaPoint turbidity sensor taped to roll bar S/N 10471; set up for 0 - 125 FTU range. Sample interval 600 s; digiquartz integration time 40s, range 400; run pump 0.5s, 1 s delay. Recovery and deployment

Other physical oceanographic measurements

53° 26' 54" N 3° 38' 49" W — Site B: The CEFAS SmartBuoy is fitted with a surface CTD (including turbidity and fluorescence sensors). The frame was fitted with cellulose bags for the determination of bacterial degradation. Recovery and deployment

Other physical oceanographic measurements

53° 32' 2" N 3° 21' 35" W — Site A: SmartBuoy Mooring. Sea-Bird MicroCAT temperature and conductivity recorder Serial number 2991 and 2506 at 5m and 10m below the surface. Sample interval 600s. Reference pressure = 25dB. Recovery and deployment

Chemical oceanography

Oxygen

53° 32' 2" N 3° 21' 35" W — Site A: The CEFAS SmartBuoy to test oxygen (Aanderaa Optode) Recovery and deployment

Silicate

53° 32' 2" N 3° 21' 35" W — Site A: The CEFAS SmartBuoy is fitted a water sampler which obtains water samples once per day for laboratory nutrient (TOXN and silicate) Recovery and deployment

Biology and fisheries

Phytoplankton pigs (eg chlorophyll, fluorescence)

53° 32' 2" N 3° 21' 35" W — Site A: The CEFAS SmartBuoy is fitted with a fluorometer (SeaPoint) and for chlorophyll determination. Recovery and deployment

Data held at BODC

Get data

Series/Profiles

2 Acoustic doppler current profiler

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

[Show series]

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

[Hide series]

BODC id	Date/Time	Location	Doc.
1623389	2006-11-02 13:50 — 2006-12-15 13:49:46	53° 27' 0" N 3° 38' 38" W
1623390	2006-11-01 14:40 — 2006-12-15 08:09:49	53° 32' 2" N 3° 21' 28" W

14 Bottle station

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

[Show series]

[Hide series]

BODC id	Date/Time	Location
1314820	2006-11-02 13:54	53° 26' 51" N 3° 38' 40" W
1666513	2006-11-01 21:05	53° 37' 25" N 3° 22' 31" W
1666549	2006-11-02 13:54	53° 26' 51" N 3° 38' 40" W
1666494	2006-11-01 19:47	53° 47' 4" N 3° 21' 38" W
1666537	2006-11-02 09:21	53° 26' 58" N 3° 22' 22" W
1666525	2006-11-02 08:41	53° 31' 59" N 3° 21' 42" W
1314752	2006-11-01 19:11	53° 51' 31" N 3° 21' 45" W
1314764	2006-11-01 19:47	53° 47' 4" N 3° 21' 38" W
1314776	2006-11-01 20:28	53° 41' 53" N 3° 21' 58" W
1666501	2006-11-01 20:28	53° 41' 53" N 3° 21' 58" W
1314788	2006-11-01 21:05	53° 37' 25" N 3° 22' 31" W
1314807	2006-11-02 08:41	53° 31' 59" N 3° 21' 42" W
1314819	2006-11-02 09:21	53° 26' 58" N 3° 22' 22" W
1666482	2006-11-01 19:11	53° 51' 31" N 3° 21' 45" W

36 CTD/STD cast

Transmittance and attenuance of the water column
Salinity of the water column
Temperature of the water column
Vertical spatial coordinates
Density of the water column
Visible waveband radiance and irradiance measurements in the water column
Dissolved oxygen parameters in the water column
Raw fluorometer output

[Show series]

[Hide series]

BODC id	Date/Time	Location
1012951	2006-11-01 20:26	53° 41' 53" N 3° 21' 58" W
1012999	2006-11-01 23:00	53° 46' 29" N 3° 30' 20" W
1013087	2006-11-02 03:49	53° 41' 52" N 3° 38' 31" W
1013167	2006-11-02 09:55	53° 26' 58" N 3° 30' 37" W
1013002	2006-11-01 23:35	53° 46' 41" N 3° 38' 44" W
1013155	2006-11-02 09:19	53° 26' 58" N 3° 22' 22" W
1013179	2006-11-02 10:38	53° 22' 42" N 3° 38' 22" W
1013192	2006-11-02 11:45	53° 26' 48" N 3° 47' 34" W
1013038	2006-11-02 01:19	53° 42' 33" N 3° 55' 37" W
1012895	2006-11-01 16:58	53° 36' 49" N 3° 13' 34" W
1012914	2006-11-01 18:19	53° 47' 3" N 3° 13' 25" W
1013051	2006-11-02 01:57	53° 37' 38" N 3° 55' 9" W
1013063	2006-11-02 02:33	53° 37' 22" N 3° 47' 50" W
1012858	2006-11-01 12:33	53° 31' 53" N 3° 22' 1" W
1012926	2006-11-01 19:10	53° 51' 31" N 3° 21' 45" W
1012987	2006-11-01 22:19	53° 41' 53" N 3° 30' 22" W
1013075	2006-11-02 03:09	53° 42' 10" N 3° 47' 34" W
1012883	2006-11-01 16:11	53° 31' 42" N 3° 15' 46" W
1013118	2006-11-02 06:18	53° 31' 57" N 3° 38' 37" W
1013180	2006-11-02 11:14	53° 23' 8" N 3° 47' 38" W
1013247	2006-11-02 15:40	53° 27' 8" N 3° 55' 17" W
1012871	2006-11-01 15:28	53° 27' 13" N 3° 14' 14" W
1012902	2006-11-01 17:39	53° 41' 49" N 3° 13' 26" W
1012938	2006-11-01 19:45	53° 47' 4" N 3° 21' 38" W
1013099	2006-11-02 04:26	53° 37' 14" N 3° 38' 40" W
1013106	2006-11-02 05:24	53° 31' 56" N 3° 47' 17" W
1013131	2006-11-02 06:54	53° 31' 46" N 3° 30' 18" W
1013143	2006-11-02 08:39	53° 31' 59" N 3° 21' 42" W
1013259	2006-11-02 16:17	53° 22' 11" N 3° 55' 27" W
1012963	2006-11-01 21:03	53° 37' 25" N 3° 22' 31" W
1012975	2006-11-01 21:36	53° 37' 5" N 3° 29' 44" W
1013014	2006-11-02 00:11	53° 46' 48" N 3° 47' 19" W
1013026	2006-11-02 00:45	53° 46' 41" N 3° 55' 19" W
1013211	2006-11-02 12:28	53° 27' 0" N 3° 39' 8" W
1013223	2006-11-02 13:52	53° 26' 51" N 3° 38' 40" W
1013235	2006-11-02 15:04	53° 31' 58" N 3° 55' 6" W

2 Fluorometers

Reference numbers
Date and time
Raw fluorometer output

[Show series]

Reference numbers
Date and time
Raw fluorometer output

[Hide series]

BODC id	Date/Time	Location	Doc.
747094	2006-11-02 13:00 — 2006-12-15 14:30	53° 27' 2" N 3° 38' 26" W
747137	2006-11-02 08:30 — 2006-12-15 09:30	53° 32' 1" N 3° 21' 47" W

1 In-situ dissolved gas analyser

Reference numbers
Date and time
Dissolved oxygen parameters in the water column

[Show series]

Reference numbers
Date and time
Dissolved oxygen parameters in the water column

[Hide series]

BODC id	Date/Time	Location	Doc.
747322	2006-11-02 08:30 — 2006-12-15 09:30	53° 32' 1" N 3° 21' 47" W

1 In-situ nutrient analyser

Nitrate concentration parameters in the water column
Reference numbers
Date and time

[Show series]

Nitrate concentration parameters in the water column
Reference numbers
Date and time

[Hide series]

BODC id	Date/Time	Location	Doc.
747487	2006-11-02 09:08 — 2006-12-15 09:08	53° 32' 1" N 3° 21' 47" W

6 Moored CTD

Concentration of suspended particulate material in the water column
Salinity of the water column
Reference numbers
Temperature of the water column
Sea level
Electrical conductivity of the water column
Date and time

[Show series]

[Hide series]

BODC id	Date/Time	Location
752938	2006-11-02 08:20:01 — 2006-12-15 09:50:01	53° 32' 1" N 3° 21' 47" W
746970	2006-11-02 13:00 — 2006-12-15 14:30	53° 27' 2" N 3° 38' 26" W
747045	2006-11-02 08:30 — 2006-12-15 09:30	53° 32' 1" N 3° 21' 47" W
753106	2006-11-02 13:50:03 — 2006-12-15 13:40:03	53° 27' 0" N 3° 38' 38" W
753099	2006-11-01 14:40:03 — 2006-12-15 08:00:03	53° 32' 2" N 3° 21' 28" W
752926	2006-11-02 08:20:01 — 2006-12-15 09:50:01	53° 32' 1" N 3° 21' 47" W

2 Nephelometers and optical backscatter sensors

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

[Show series]

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

[Hide series]

BODC id	Date/Time	Location	Doc.
747205	2006-11-02 13:00 — 2006-12-15 14:30	53° 27' 2" N 3° 38' 26" W
747278	2006-11-02 08:30 — 2006-12-15 09:30	53° 32' 1" N 3° 21' 47" W

1 Surface water sample (unspecified)

Silicate concentration parameters in the water column
Nitrate concentration parameters in the water column
Reference numbers
Date and time

[Show series]

Silicate concentration parameters in the water column
Nitrate concentration parameters in the water column
Reference numbers
Date and time

[Hide series]

BODC id	Date/Time	Location	Doc.
747567	2006-11-04 00:00 — 2006-12-14 01:03	53° 32' 1" N 3° 21' 47" W

2 radiometers

Reference numbers
Visible waveband radiance and irradiance measurements in the water column
Light extinction and diffusion coefficients
Date and time

[Show series]

Reference numbers
Visible waveband radiance and irradiance measurements in the water column
Light extinction and diffusion coefficients
Date and time

[Hide series]

BODC id	Date/Time	Location	Doc.
747438	2006-11-02 08:30 — 2006-12-15 09:30	53° 32' 1" N 3° 21' 47" W
747383	2006-11-02 08:30 — 2006-12-04 16:00	53° 32' 1" N 3° 21' 47" W

Discrete samples

36 CTD frame plus rosette sampler

Silicate concentration parameters in the water column
Chlorophyll pigment concentrations in water bodies
Phosphate concentration parameters in the water column
Concentration of suspended particulate material in the water column
Ammonium and ammonia concentration parameters in water bodies
Transmittance and attenuance of the water column
Nitrate concentration parameters in the water column
Raw light meter output
Salinity of the water column
Nitrite concentration parameters in the water column
Phaeopigment concentrations in the water column
Temperature of the water column
Density of the water column
Visible waveband radiance and irradiance measurements in the water column
Raw suspended particulate material concentration sensor output
Dissolved oxygen parameters in the water column
Raw fluorometer output

4 Instrument mooring

Resources

RV Prince Madog PD35/06

Cruise summary report

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