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RV Prince Madog PD03/05
Cruise summary report
| Cruise Info. | |
| Ship name (ship code) | RV Prince Madog (74P2) |
| Cruise identifier | PD03/05 |
| Cruise period | 2005-02-02 — 2005-02-04 |
| Status | Completed |
| Port of departure | Birkenhead, United Kingdom |
| Port of return | Menai Bridge, United Kingdom |
| Purpose | Research |
| Objectives | The objectives are to deploy moored instrumentation, i.e. STABLE, PMP, Wave Buoy and ADCP frame at the mouth of the River Dee. Also to carry out CTD observations for at least a tidal cycle in the Welsh Channel and the Hilbre Swash, to study turbulence and SPM processes. To carry out a side scan sonar survey of the Hilbre Swash.
In the following narrative all times are UMT. The Prince Madog was loaded on 01/02/2005, STABLE, and 2 PMP frames with ADCP and CTD loggers. We sailed from Birkenhead at 06:30 on the 02/02/2005, arriving to the Hilbre Swash by 08:30. We carried out 3 lines of the side scan sonar covering most of the Hilbre Swash Channel until 11:30. At 11:40 we took two grab samples in the STABLE possition, then we followed to deploy stable at 12:40. The PMP with ADCP and CTD was deployed at 13:30. Wave buoy deployed at 13:50. A 25 wahour CTD yoyo was carried out sampling every 1/2 hour, starting at 15:00 and finishing at 16:00 03/02/2005. At 16:06 the anchor was lifted and we proceeded to the Welsh Channel. We deployed the PMP with the LISST-100 at 18:00. and a 13 anchored CTD station was started at 18:30 and finished at 07:30 on 04/02/2005. We then left for Coastal Observatory station 10 to carry out a CTD cast at 09:00, followed by station 11 at 09:45, then station 25 at 11:23. Station 32 at 12:01, to finish with station 12:50 33. We arrived at Menai Bridge at 14:50. |
| Chief scientist | Alejandro J Souza (Proudman Oceanographic Laboratory) |
| Project | Dee experiment |
| Coordinating body | Proudman Oceanographic Laboratory |
| Ocean/sea areas | |
| General | Irish Sea and St. George's Channel |
| Specific | Irish Sea, Liverpool Bay, mouth of the Dee Estuary |
| Measurements | |
| Physical oceanography | |
| Surface measurements underway (T,S) | Quantity: activity duration in days = 2 Description: Underway Temp, sal, chlorophyll, transmittance. |
| CTD stations | Quantity: number of profiles = 83 Description: CTD profiles, supplementary Chlorophyll, Transmissometer and LISST data |
| Current profiler (eg ADCP) | Quantity: activity duration in days = 2 Description: On board ADCP |
| Geology and geophysics | |
| Grab | Quantity: number of samples = 3 Description: sediment grab |
| Long/short range side scan sonar | Quantity: number of track lines = 3 Description: Side scan sonar in the Hilbre Swash |
| Moorings, landers, buoys | |
| Physical oceanography | |
| Transparency (eg transmissometer) | 53° 22' 11" N 3° 19' 30" W — LISST-100 C recording at 20 min burst every hour at 1.0 m from the bed |
| Current profiler (eg ADCP) | 53° 22' 11" N 3° 19' 30" W — Bottom mounted 1.2 MHz RDI ADCP, mode 12 every second; 50cm bin size 20 min burst |
| Current profiler (eg ADCP) | 53° 22' 37" N 3° 14' 12" W — Bottom mounted 1.2 MHz RDI ADCP, mode 12 every second; 50cm bin size 20 min burst |
| Instrumented wave measurements | 53° 23' 1" N 3° 14' 17" W — Triaxis wave ride |
| Other physical oceanographic measurements | 53° 22' 20" N 3° 14' 3" W — STABLE with 2 5 MHz ADV, 1 10 MHz ADV, LISST-ST, 3-D Ripple profiler, ABS, Fast CT Samp. |
| Data held at BODC | |
| Discrete samples | |
| 83 CTD frame plus rosette sampler | Transmittance and attenuance of 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 Density of the water column Raw light meter output Raw suspended particulate material concentration sensor output Raw fluorometer output |
| 5 Surface water sample collected by a bucket on a rope |
