Cruise inventory

RV Prince Madog PD28/06

Cruise summary report

Cruise Info. 
Ship name (ship code)RV Prince Madog (74P2)
Cruise identifierPD28/06
Cruise period2006-09-11 — 2006-09-18
StatusCompleted
Port of departureMenai Bridge, United Kingdom
Port of returnMenai Bridge, United Kingdom
ObjectivesOverall aims of the project are to measure the impact of nutrients on the primary productivity in the Irish Sea using new techniques such as fast rate repetition fluorometry (FRRF) and pulse amplitude modulation fluorometry (PAM). This is sought accomplished by occupying selected tidal stations as well as carry out transects. Measured parameters are fluorescence, SPM, Chl a, HPLC, optical properties, particle size, and phytoplankton composition.

The plan was to carry out 13-25 hour tidal stations on stations GY-T1 (25 hr), DB-T1 (25 hr), AB-T1 (25hr), CB-T1(25hr), and LB-T1(25hr). Additionally, to carry out two transects between stations LB-T1 to GY-T1 and between AB-T1 to CB-T1 in order to document the spatial variation. All stations were visited according to plan, excepth AB-T1, which was only occupied for 13 hrs.
Chief scientistOle Aarup Mikkelsen (University of Wales, Bangor School of Ocean Sciences)
ProjectMATSIS
Coordinating bodySOS (UWB) and Marine Institute (Ireland)
Ocean/sea areas 
GeneralIrish Sea and St. George's Channel
SpecificIrish Sea and Liverpool Bay
Track chartsRV Prince Madog PD28/06 cruise track — pd28_06trk.pdf (0.03 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 = 61
Description: Bottles always fired at surface and bottom and occasionally at mid-depth
Water bottle stationsQuantity: number of stations = 61
Description: Particulate and dissolved organic and inorganic P
Water bottle stationsQuantity: number of stations = 61
Description: Particulate and dissolved organic and inorganic N
Water bottle stationsQuantity: number of stations = 61
Description: Suspended matter concentration, chl, particulate absorption, yellow substance, HPLC
CTD stationsQuantity: number of stations = 128
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 = 60
Description: Underwater light profiles with PRR600
Optics (eg underwater light levels)Quantity: number of stations = 60
Description: Secchi Disk
Current profiler (eg ADCP)Quantity: activity duration in days = 8
Description: Currents from 300 kHz RDI Workhorse ADCP
Chemical oceanography 
Other chemical oceanographic measurementsQuantity: number of stations = 61
Description: Particulate and dissolved organic and inorganic P
Other chemical oceanographic measurementsQuantity: number of stations = 61
Description: Particulate and dissolved organic and inorganic N
Contamination 
Suspended matterQuantity: number of stations = 61
Description: Suspended matter concentration, chl, particulate absorption, yellow substance, HPLC
Other contaminant measurementsQuantity: number of stations = 139
Description: LISST-FLOC profiles for in situ suspended particle size spectra
Biology and fisheries 
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: number of stations = 139
Description: Fast Repetition Rate Fluorometry profiles
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: activity duration in days = 8
Description: Underway fluorescence measurements by PAM flow-through fluorometer
PhytoplanktonQuantity: number of stations = 17
Description: Phytoplankton net samples
Meteorology 
Routine standard measurementsQuantity: activity duration in days = 8
Description: Underway measurement of standard met. Parameters