RV Prince Madog PD12/05
Cruise summary report
| Cruise Info. | |||||||||
| Ship name (ship code) | RV Prince Madog (74P2) | ||||||||
| Cruise identifier | PD12/05 | ||||||||
| Cruise period | 2005-04-10 — 2005-04-19 | ||||||||
| Status | Completed | ||||||||
| Port of departure | Menai Bridge, United Kingdom | ||||||||
| Port of return | Menai Bridge, United Kingdom | ||||||||
| Purpose | Research | ||||||||
| Objectives | 1. To perform turbulence production and dissipation rate measurements at two 25 hr tidal stations; one in Liverpool Bay (LB-T1) and one in the Irish Sea (GY-T1).
2. To assess primary productivity in the Irish Sea using new techniques such as fast rate repetition fluorometry (FRRF) and pulse amplitude modulation fluorometry (PAM) on 13-25 hr tidal stations and numerous transect stations. Due to bad weather station measurements at station GY-T1 was not completed, station abandoned 12 hr before plan. No operations for 1.5 days due to bad weather. Measurements at station DB-T1 stopped after 20 hrs due to weather and a broken anchor chain. Remaining part of cruise cancelled 18/04/05 as the vessel is not allowed to operate with only one anchor. On station GY-T1 one ADCP mooring was lost as it never resurfaced upon release. | ||||||||
| Chief scientist | Colin Jago (University of Wales, Bangor School of Ocean Sciences) | ||||||||
| Project | MATSISand TURBSED | ||||||||
| Coordinating body | SOS and Marine Institute, Ireland | ||||||||
| Ocean/sea areas | |||||||||
| General | Irish Sea and St. George's Channel | ||||||||
| Specific | Liverpool Bay and the Irish Sea | ||||||||
| Track charts |  (0.05 MB) | ||||||||
| Measurements | |||||||||
| Physical oceanography | |||||||||
| Surface measurements underway (T,S) | Quantity: activity duration in days = 8 Description: Underway meas. of T, S, Fluor., turbidity | ||||||||
| Water bottle stations | Quantity: number of stations = 22 Description: Particulate and dissolved organic and inorganic N | ||||||||
| Water bottle stations | Quantity: number of stations = 22 Description: Particulate and dissolved organic and inorganic P | ||||||||
| Water bottle stations | Quantity: number of stations = 113 Description: Suspended matter concentration, chl, particulate absorption, yellow substance, HPLC | ||||||||
| CTD stations | Quantity: number of stations = 113 Description: CTD data collected with a SeaBird 911 Plus CTD equipped with a LISST-25 and a LISST-100 | ||||||||
| Optics (eg underwater light levels) | Quantity: number of stations = 37 Description: Secchi Disk | ||||||||
| Optics (eg underwater light levels) | Quantity: number of stations = 37 Description: Underwater light profiles with PRR600 and Satlantic MicroProfiler | ||||||||
| Current profiler (eg ADCP) | Quantity: activity duration in days = 8 Description: Underway current measurements from 300 kHz RDI Workhorse ADCP | ||||||||
| Other physical oceanographic measurements | Quantity: activity duration in days = 2 Description: FLY dissipation profiler, hourly meas. for 25 hrs on 2 stations | ||||||||
| Chemical oceanography | |||||||||
| Other chemical oceanographic measurements | Quantity: number of stations = 22 Description: Particulate and dissolved organic and inorganic P | ||||||||
| Other chemical oceanographic measurements | Quantity: number of stations = 22 Description: Particulate and dissolved organic and inorganic N | ||||||||
| Contamination | |||||||||
| Suspended matter | Quantity: number of stations = 113 Description: Suspended matter concentration, chl, particulate absorption, yellow substance, HPLC | ||||||||
| Other contaminant measurements | Quantity: number of stations = 113 Description: LISST-FLOC profiles for in situ suspended particle size spectra | ||||||||
| Biology and fisheries | |||||||||
| Phytoplankton pigs (eg chlorophyll, fluorescence) | Quantity: activity duration in days = 8 Description: Underway fluorescence measurements by PAM flow-through fluorometer | ||||||||
| Phytoplankton pigs (eg chlorophyll, fluorescence) | Quantity: number of stations = 113 Description: Fast Repetition Rate Fluorometry profiles | ||||||||
| Phytoplankton | Quantity: number of stations = 9 Description: Phytoplankton net samples | ||||||||
| Meteorology | |||||||||
| Routine standard measurements | Quantity: activity duration in days = 8 Description: Underway measurement of standard met. Parameters | ||||||||
| Moorings, landers, buoys | |||||||||
| Physical oceanography | |||||||||
| Current profiler (eg ADCP) | 53° 34' 57" N 5° 45' 52" W — Moored ADCP for 25 hrs. ADCP never recovered - lost. | ||||||||
| Current profiler (eg ADCP) | 53° 32' 13" N 3° 20' 57" W — Moored ADCP for 25 hrs. | ||||||||
| Data held at BODC | Get data | ||||||||
| Series/Profiles | |||||||||
| 1 Paddle wheel current meter | Reference numbers Date and time Salinity of the water column Temperature of the water column Electrical conductivity of the water column Reference numbers Date and time Salinity of the water column Temperature of the water column Electrical conductivity of the water column
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| Discrete samples | |||||||||
| 1 Instrument mooring |
