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- 7674
RV Prince Madog PD22/06
Cruise summary report
Cruise Info. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Ship name (ship code) | RV Prince Madog (74P2) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Cruise identifier | PD22/06 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Cruise period | 2006-07-26 — 2006-07-27 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Status | Completed | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Port of departure | Menai Bridge, United Kingdom | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Port of return | Menai Bridge, United Kingdom | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Purpose | Research | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Objectives | 1. At 53 32N 3 21.8W, 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); (b) A CEFAS SmartBuoy (with cellulose bags) in a single point mooring. To deploy: (c) A sea bed frame for a 600 kHz ADCP (waves ADCP); (d) A CEFAS SmartBuoy (with cellulose bags) in a single point mooring. 2. At 53 27N 3 38.6W To recover: (e) A sea bed frame for a 600 kHz ADCP (waves ADCP); (f) A CEFAS SmartBuoy (with cellulose bags) in a single point mooring. To deploy: (g) A sea bed frame fro a 600 kHz ADCP (waves ADCP); (h) A CEFAS SmartBuoy (with cellulose bags) in a single point mooring (i) A telemetry surface buoy. 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. To obtain calibration samples for salinity, transmittance, suspended sediment and for chlorophyll at selected stations. To obtain near surface and bed water samples for nutrient and suspended sediment determination. 4. Collect 10 vertical net hauls at mooring site A. 5. To recover a directional wave buoy at 53 22.6N 3 14.1W, off Hilbre Island. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Chief scientist | M John Howarth (Proudman Oceanographic Laboratory) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Project | POL Coastal Observatory | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Cruise report | (0.23 MB) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Ocean/sea areas | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
General | Irish Sea and St. George's Channel | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Specific | Liverpool Bay and eastern Irish Sea. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Track charts | (0.11 MB) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Measurements | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Physical oceanography | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
CTD stations | Quantity: number of stations = 35 Description: The Sea-Bird 911 CTD recorded downwelling PAR light levels (CEFAS light sensor) and transmittance, measurements were taken to within an estimated 3 m above the bed | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
CTD stations | Quantity: number of stations = 38 Description: The Sea-Bird 911 CTD recorded temperature and conductivity, measurements were taken to within an estimated 3 m above the bed | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Chemical oceanography | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Oxygen | Quantity: number of stations = 35 Description: The 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 = 35 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 = 35 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 = 35 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 = 35 Description: Water samples were taken from the near surface and near bed bottles and 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 by CEFAS. A LISST-25 and a LISST-100 particle sizer were fitted to the CTD | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Biology and fisheries | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Phytoplankton pigs (eg chlorophyll, fluorescence) | Quantity: number of stations = 35 Description: The Sea-Bird 911 CTD recorded fluorescence at 24 Hz. Measurements were taken to within an estimated 3 m above the bed. 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: Parameters recorded every minute 3 m below sea level by the WS Oceans surface sampling system: 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), and Conductivity sensor water temperature | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Moorings, landers, buoys | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Physical oceanography | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Current meters | 53° 31' 57" N 3° 21' 37" W — Site A: SonTek ADV (Acoustic Doppler Velocimeter); ADV Logger 258. Sensor height to middle of fork 1.59m. Sample rate 16Hz; burst interval 3600s; samples in each burst 19200; burst length 1200s. Recovery and Deployment | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Current profiler (eg ADCP) | 53° 26' 58" N 3° 38' 36" W — Site B: Telemetry ADCP 1200 kHz RDI 0572. 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 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Current profiler (eg ADCP) | 53° 31' 57" N 3° 21' 37" W — Site A: Waves ADCP 600 kHz RDI 5806; battery pack #2. 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° 26' 54" N 3° 38' 20" W — Site B: Waves ADCP 600 kHz RDI 3644; battery pack #1. 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 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Surface drifters/drifting buoys | 53° 26' 58" N 3° 38' 26" W — Site B: SmartBuoy Mooring. The CEFAS SmartBuoy is fitted with a surface CTD (including turbidity and fluorescence sensors). The frame was fitted with bags for the determination of bacterial degradation. Recovery and Deployment | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Sea level (inc. bot. press., inverted echosounder) | 53° 31' 57" N 3° 21' 37" W — Site A: Sea-Bird 16plus S/N 4736 on base of frame with pumped conductivity sensor underneath. SeaPoint turbidity sensor: S/N 10490 taped to roll bar; set up for 0 - 125 FTU range. Sample interval 600 s; digiquartz integration time 40 s, range 400; pump 0.5s, 1 s delay. 5175 samples recorded. Recovery and Deployment | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Sea level (inc. bot. press., inverted echosounder) | 53° 26' 54" N 3° 38' 20" W — Site B: Sea-Bird 16plus S/N 4596 on base of frame with pumped conductivity sensor underneath. SeaPoint turbidity sensor: SN 10487 taped to roll bar; set up for 0 - 125 FTU range. Sample interval 600 s; digiquartz integration time 40s, range 400; run pump 0.5s, 1 s delay. 5238 samples recorded. Recovery and Deployment | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Other physical oceanographic measurements | 53° 26' 57" N 3° 38' 39" W — Site B: Telemetry toroid with LinkQuest acoustic modem, GPS receiver and Orbcomm transmitter. Deployment | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Other physical oceanographic measurements | 53° 32' 0" N 3° 21' 34" W — Site A: Sea-Bird MicroCAT temperature and conductivity recorder Serial number 2081 at 5 m below the surface. Sample interval 600s. ID #02 5155 samples. Serial number 2010 at 10 m below the surface. Sample interval 600s. ID #01, 5162 samples. Recovery and Deployment | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Other physical oceanographic measurements | 53° 32' 0" N 3° 21' 34" W — Site A: The CEFAS SmartBuoy is fitted with one surface CTD, light sensors at 1 and 2 m below the surface, a water sampler which obtains water samples once per day for laboratory nutrient (TOXN and silicate), fluorometer (SeaPoint), oxygen (Aanderaa Optode) and chlorophyll determination and an in situ NAS2E nutrient analyser. Recovery and Deployment | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Data held at BODC | Get data | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Series/Profiles | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2 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 Date and time Vertical spatial coordinates Vertical velocity of the water column (currents) Horizontal velocity of the water column (currents) Metadata parameters Sea level
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18 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 Ammonium and ammonia concentration parameters in water bodies Phaeopigment concentrations in the water column Nitrate concentration parameters in the water column Quality control flags Chlorophyll pigment concentrations in water bodies 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 Ammonium and ammonia concentration parameters in water bodies Phaeopigment concentrations in the water column Nitrate concentration parameters in the water column Quality control flags Chlorophyll pigment concentrations in water bodies
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2 Fluorometers | Reference numbers Date and time Raw fluorometer output Chlorophyll pigment concentrations in water bodies Reference numbers Date and time Raw fluorometer output Chlorophyll pigment concentrations in water bodies
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1 In-situ dissolved gas analyser | Reference numbers Date and time Dissolved oxygen parameters in the water column Metadata parameters Reference numbers Date and time Dissolved oxygen parameters in the water column Metadata parameters
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1 In-situ nutrient analyser | Reference numbers Date and time Nitrate concentration parameters in the water column
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2 Moored CTD | Reference numbers Date and time Salinity of the water column Temperature of the water column Reference numbers Date and time Salinity of the water column Temperature of the water column
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2 Nephelometers and optical backscatter sensors | Reference numbers Date and time Concentration of suspended particulate material in the water column Reference numbers Date and time Concentration of suspended particulate material in the water column
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1 Surface water sample (unspecified) | Reference numbers Date and time Silicate concentration parameters in the water column Nitrate concentration parameters in the water column Reference numbers Date and time Silicate concentration parameters in the water column Nitrate concentration parameters in the water column
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2 radiometers | Reference numbers Date and time Light extinction and diffusion coefficients Visible waveband radiance and irradiance measurements in the water column Reference numbers Date and time Light extinction and diffusion coefficients Visible waveband radiance and irradiance measurements in the water column
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Discrete samples | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
38 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 Dissolved oxygen parameters in the water column Concentration of suspended particulate material in the water column Silicate concentration parameters in the water column Visible waveband radiance and irradiance measurements in the water column Density of the water column Ammonium and ammonia concentration parameters in water bodies Raw light meter output 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 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4 Instrument mooring |