RV Prince Madog PD12/06
Cruise summary report
| Cruise Info. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Ship name (ship code) | RV Prince Madog (74P2) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Cruise identifier | PD12/06 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Cruise period | 2006-04-05 — 2006-04-07 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Status | Completed | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Port of departure | Menai Bridge, United Kingdom | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Port of return | Menai Bridge, United Kingdom | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Purpose | Research | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Objectives | Objectives
1. At 53 32N 3 21.8W, half a mile west of the Mersey Bar Light Vessel (site A) To recover: (a) A directional wave buoy. To deploy: b) A directional wave buoy (c) A nutrient analyser in a sea bed frame measuring nitrate and phosphate four times a semi-diurnal tidal cycle. 2. At 53 27N 3 38.6 W (site 21, second site, B) To recover: (d) A sea bed frame for a 600 kHz ADCP (waves ADCP) to measure the mean current profile, pressures and directional waves. A Sea-Bird SBE 16plus with pumped conductivity sensor, digiquartz pressure sensor and a SeaPoint turbidity sensor were fitted to the frame. A 1.2 MHz telemetry ADCP was fitted to the frame (e) A CEFAS SmartBuoy in a single point mooring. To deploy: (f) A sea bed frame for a 600 kHz ADCP (waves ADCP) to measure the mean current profile, pressures and directional waves. A Sea-Bird SBE 16plus with pumped conductivity sensor, digiquartz pressure sensor and a SeaPoint turbidity sensor are fitted to the frame. A 1.2 MHz telemetry ADCP is fitted to the frame (g) A CEFAS SmartBuoy 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. 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 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Chief scientist | M John Howarth (Proudman Oceanographic Laboratory) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Project | POL Coastal Observatory | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Cruise report |  (0.09 MB) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Ocean/sea areas | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| General | Irish Sea and St. George's Channel | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Specific | Liverpool Bay/Eastern Irish Sea | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Track charts | (0.04 MB) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Measurements | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Physical oceanography | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Surface measurements underway (T,S) | Quantity: number of stations = 36 Description: Sea surface temperature, salinity and transmittance were calibrated against the CTD by BODC. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| CTD stations | Quantity: number of stations = 35 Description: The Sea-Bird 911 CTD recorded temperature and conductivity. Measurements were taken to within an estimated 3 m above the bed | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Optics (eg underwater light levels) | 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 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 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 were filtered to determine suspended sediment load and calibrate the CTD transmissometer. Water samples from the second near surface bottle from stations 1, 5-9 and 11 were filtered and 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 = 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, 5-9 and 11 were filtered for chlorophyll | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Meteorology | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Other meteorological measurements | Quantity: activity duration in days = 2 Description: Measurements taken by the WS Oceans surface sampling system 3 m below sea level over 2 days. Parameters recorded were 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, and Conductivity sensor water temperature | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Moorings, landers, buoys | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Physical oceanography | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Current profiler (eg ADCP) | 53° 27' 0" N 3° 38' 26" W — Site B: Waves ADCP 600 kHz RDI 5803. 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. Smart Buoy | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Current profiler (eg ADCP) | 53° 27' 0" N 3° 38' 26" W — Site B: Telemetry ADCP 1.2MHz RDI 6489. LinkQuest modem. The frame D1 was fitted with two Benthos releases (serial number 72850) - Rx 11.5 kHz, Tx 12.0 kHz, release C and (serial number 71904) - Rx 10.0 kHz, Tx 12.0 kHz, release C both with a fizz link, and a spooler with 200m of rope for recovery of the ballast weight. Recovery and Deployment | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Surface drifters/drifting buoys | 53° 26' 59" N 3° 38' 25" W — Site B: Smart Buoy Recovered. The CEFAS SmartBuoy deployed was fitted with a surface CTD (including turbidity and fluorescence sensors). A CTD with turbidity sensor was fitted in a cage at 10 m below the surface | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Sea level (inc. bot. press., inverted echosounder) | 53° 27' 0" N 3° 38' 26" W — Site B: Sea-Bird 16plus S/N 4738 on base of frame with pumped conductivity sensor underneath Waves ADCP. SeaPoint turbidity sensor: S/N 10320 taped to roll bar; set up for 0 - 25 FTU range. Sample interval 600 s. Recovery and Deployment | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 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 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 Vertical spatial coordinates Phosphate concentration parameters in the water column Silicate concentration parameters in the water column Ammonium and ammonia concentration parameters in water bodies Nitrate concentration parameters in the water column Phaeopigment concentrations in the water column Quality control flags Chlorophyll pigment concentrations in water bodies Reference numbers Nitrite concentration parameters in the water column Vertical spatial coordinates Phosphate concentration parameters in the water column Silicate concentration parameters in the water column Ammonium and ammonia concentration parameters in water bodies Nitrate concentration parameters in the water column Phaeopigment concentrations in the water column Quality control flags Chlorophyll pigment concentrations in water bodies
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| 1 Fluorometers | Reference numbers Date and time Raw fluorometer output
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| 1 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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| 1 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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| Discrete samples | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 36 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 Visible waveband radiance and irradiance measurements in the water column Silicate concentration parameters in the water column Ammonium and ammonia concentration parameters in water bodies Raw light meter output Density of the water column Raw fluorometer output Nitrate concentration parameters in the water column Phaeopigment concentrations in the water column Raw suspended particulate material concentration sensor output Chlorophyll pigment concentrations in water bodies | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 2 Instrument mooring |
