Cruise inventory

RV Prince Madog PD12/05

Cruise summary report

Cruise Info. 
Ship name (ship code)RV Prince Madog (74P2)
Cruise identifierPD12/05
Cruise period2005-04-10 — 2005-04-19
StatusCompleted
Port of departureMenai Bridge, United Kingdom
Port of returnMenai Bridge, United Kingdom
PurposeResearch
Objectives1. 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 scientistColin Jago (University of Wales, Bangor School of Ocean Sciences)
ProjectMATSISand TURBSED
Coordinating bodySOS and Marine Institute, Ireland
Ocean/sea areas 
GeneralIrish Sea and St. George's Channel
SpecificLiverpool Bay and the Irish Sea
Track chartsRV Prince Madog PD12/05 cruise track — pd12_05roscop4758trk.pdf (00 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 stationsQuantity: number of stations = 22
Description: Particulate and dissolved organic and inorganic N
Water bottle stationsQuantity: number of stations = 22
Description: Particulate and dissolved organic and inorganic P
Water bottle stationsQuantity: number of stations = 113
Description: Suspended matter concentration, chl, particulate absorption, yellow substance, HPLC
CTD stationsQuantity: 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 measurementsQuantity: activity duration in days = 2
Description: FLY dissipation profiler, hourly meas. for 25 hrs on 2 stations
Chemical oceanography 
Other chemical oceanographic measurementsQuantity: number of stations = 22
Description: Particulate and dissolved organic and inorganic N
Other chemical oceanographic measurementsQuantity: number of stations = 22
Description: Particulate and dissolved organic and inorganic P
Contamination 
Suspended matterQuantity: number of stations = 113
Description: Suspended matter concentration, chl, particulate absorption, yellow substance, HPLC
Other contaminant measurementsQuantity: 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
PhytoplanktonQuantity: number of stations = 9
Description: Phytoplankton net samples
Meteorology 
Routine standard measurementsQuantity: 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 
Series/Profiles 
1  Moored CTD
Moored instrument depth
Electrical conductivity of the water column
Salinity of the water column
Temperature of the water column
Reference numbers
Date and time
Moored instrument depth
Electrical conductivity of the water column
Salinity of the water column
Temperature of the water column
Reference numbers
Date and time

BODC idDate/TimeLocationDoc.
7018462005-04-10 12:20:01  — 2005-05-11 13:20:01 53° 31' 59" N  3° 21' 49" W  View metadata report for BODC series reference number 701846
1  Paddle wheel current meter
Electrical conductivity of the water column
Salinity of the water column
Temperature of the water column
Reference numbers
Date and time
Electrical conductivity of the water column
Salinity of the water column
Temperature of the water column
Reference numbers
Date and time

BODC idDate/TimeLocationDoc.
7016742005-04-10 12:29  — 2005-05-11 13:19 53° 31' 59" N  3° 21' 49" W  View metadata report for BODC series reference number 701674