RV Prince Madog PD11/05
Cruise summary report
| Cruise Info. | |||||||||||||||||||||||||
| Ship name (ship code) | RV Prince Madog (74P2) | ||||||||||||||||||||||||
| Cruise identifier | PD11/05 | ||||||||||||||||||||||||
| Cruise period | 2005-04-05 — 2005-04-07 | ||||||||||||||||||||||||
| 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 600kHz ADCP (waves ADCP); (b) A CEFAS SmartBuoy; (c) A sea bed frame for a 1.2 MHz ADCP (telemetry ADCP); (d) A single point toriod mooring. To deploy: (e) A sea bed frame for a 600 kHz ADCP (waves ADCP); (f) A CEFAS SmartBuoy in a single point mooring. 2. At 53 27N 3 38.6W To deploy: (g) A sea bed frame for a 600 kHz ADCP (waves ADCP); (h) A marking toriod in a single point mooring. 3. At 53 27N 3 30.2W To recover: (i) A sea bed frame for a 600 kHz ADCP (Dee ADCP). This was deployed as part of the Dee experiment. 4. 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 Lanashire 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. 5. To collect 10 vertical net hauls at mooring site A. 6. To conduct a 25 hour station at 53 32N 3 21.8W with CTD profiles recorded every half hour and surface and bed water samples taken every hour. | ||||||||||||||||||||||||
| Chief scientist | M John Howarth (Proudman Oceanographic Laboratory) | ||||||||||||||||||||||||
| Cruise report |  (0.20 MB) | ||||||||||||||||||||||||
| Ocean/sea areas | |||||||||||||||||||||||||
| General | Irish Sea and St. George's Channel | ||||||||||||||||||||||||
| Specific | Irish Sea between the North Wales coast and Blackpool and the Lancashire coast and the Great Orme. | ||||||||||||||||||||||||
| Track charts | (0.11 MB) | ||||||||||||||||||||||||
| Measurements | |||||||||||||||||||||||||
| Physical oceanography | |||||||||||||||||||||||||
| Surface measurements underway (T,S) | Quantity: activity duration in days = 2 Description: Data recorded every minute. Surface sampling system measuring Solar radiation (W m-2), PAR (μmols / m2s), Air Temperature (ºC), Relative Humidity, Relative Wind Speed (m s-1), Relative Wind Direction (º) - zero indicates wind on the bow, Transmissance, Hull Temperature (ºC), Barometric Pressure (mbar), Fluorescence, Turbidity, Salinity, Minimum Air Temp (ºC), Maximum Air Temp (ºC), Wind Gust (m s-1), GPS Time, Latitude, Longitude, Barometric Pressure Minimum (mbar), Barometric Pressure Maximum (mbar), Conductivity sensor water temperature (ºC). Sea surface temperature, salinity and transmittance were calibrated against the CTD by BODC. | ||||||||||||||||||||||||
| CTD stations | Quantity: number of stations = 3 Description: of CTD grid visited. CTD recorded downwelling PAR light levels (CEFAS light sensor), temperature, conductivity, transmittance, oxygen (no calibration samples) and fluorescence at 24 Hz. Water samples were taken from the near surface and near bed bottles and frozen for nutrient analysis by SOC (nitrate, phosphate, silicate), and also 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 for chlorophyll and suspended sediment determination and some filtrate was preserved with mercuric chloride for nutrient determination by CEFAS. | ||||||||||||||||||||||||
| Optics (eg underwater light levels) | Quantity: activity duration in days = 2 Description: Data recorded every minute. Surface sampling system measuring Solar radiation (W m-2), PAR (μmols / m2s), Air Temperature (ºC), Relative Humidity, Relative Wind Speed (m s-1), Relative Wind Direction (º) - zero indicates wind on the bow, Transmissance, Hull Temperature (ºC), Barometric Pressure (mbar), Fluorescence, Turbidity, Salinity, Minimum Air Temp (ºC), Maximum Air Temp (ºC), Wind Gust (m s-1), GPS Time, Latitude, Longitude, Barometric Pressure Minimum (mbar), Barometric Pressure Maximum (mbar), Conductivity sensor water temperature (ºC). Sea surface temperature, salinity and transmittance were calibrated against the CTD by BODC. | ||||||||||||||||||||||||
| Meteorology | |||||||||||||||||||||||||
| Upper air observations | Quantity: activity duration in days = 2 Description: Data recorded every minute. Surface sampling system measuring Solar radiation (W m-2), PAR (μmols / m2s), Air Temperature (ºC), Relative Humidity, Relative Wind Speed (m s-1), Relative Wind Direction (º) - zero indicates wind on the bow, Transmissance, Hull Temperature (ºC), Barometric Pressure (mbar), Fluorescence, Turbidity, Salinity, Minimum Air Temp (ºC), Maximum Air Temp (ºC), Wind Gust (m s-1), GPS Time, Latitude, Longitude, Barometric Pressure Minimum (mbar), Barometric Pressure Maximum (mbar), Conductivity sensor water temperature (ºC). Sea surface temperature, salinity and transmittance were calibrated against the CTD by BODC. | ||||||||||||||||||||||||
| 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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| 1 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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| 2 In-situ nutrient analyser | Reference numbers Date and time Concentration of suspended particulate material in the water column Silicate concentration parameters in the water column Nitrate concentration parameters in the water column Reference numbers Date and time Concentration of suspended particulate material in the water column Silicate concentration parameters in the water column Nitrate concentration parameters in the water column
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| 5 Moored CTD | Reference numbers Moored instrument depth Date and time Salinity of the water column Temperature of the water column Concentration of suspended particulate material in the water column Electrical conductivity of the water column Sea level Reference numbers Moored instrument depth Date and time Salinity of the water column Temperature of the water column Concentration of suspended particulate material in the water column Electrical conductivity of the water column Sea level
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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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| 2 radiometers | Reference numbers Date and time Visible waveband radiance and irradiance measurements in the water column Reference numbers Date and time Visible waveband radiance and irradiance measurements in the water column
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| Discrete samples | |||||||||||||||||||||||||
| 24 CTD frame plus rosette sampler | Transmittance and attenuance of 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 Silicate concentration parameters in the water column Visible waveband radiance and irradiance measurements in the water column Density of the water column Raw light meter output Raw suspended particulate material concentration sensor output Raw fluorometer output Nitrate concentration parameters in the water column | ||||||||||||||||||||||||
| 3 Instrument mooring |
