Cruise inventory

RV Lough Foyle LF/22/93

Cruise summary report

Cruise Info. 
Ship name (ship code)RV Lough Foyle (74LG)
Cruise identifierLF/22/93
Cruise period1993-09-14 — 1993-09-17
StatusCompleted
Port of departureBelfast, United Kingdom
Port of returnBelfast, United Kingdom
PurposeResearch
ObjectivesTo map temperature, salinity and nutrient distributions in the NW Irish Sea and also to assess rates of primary production at selected sites on the sampling grid.

The entire cruise track was surface mapped for nutrients temperature and salinity at approx. one mile intervals and chlorophyll a at approx. five mile intervals.
Chief scientistBrian Stewart (Department of Agriculture for Northern Ireland)
Cruise reportRV Lough Foyle LF/22/93 cruise report lf22_93.pdf — access key 'C' (0.12 MB) 
Ocean/sea areas 
GeneralIrish Sea and St. George's Channel
SpecificNW Irish Sea and North Channel
Track chartsRV Lough Foyle LF/22/93 cruise track — lf22_93track.pdf (00 MB) 
Measurements 
Physical oceanography 
CTD stationsQuantity: number of stations = 27
Description: CTD/rosette water sampler deployed at each station to aquire nutrient data from the depth profile
Subsurface temperature and salinity measurementsQuantity: number of stations = 27
Description: CTD/rosette water sampler deployed at each station to aquire temperature and salinity data from the depth profile
Transparency (eg transmissometer)Quantity: number of stations = 27
Description: Secchi disc used
Optics (eg underwater light levels)Quantity: number of stations = 7
Description: Underwater light measurements made using a series of optical filters. Additional underwater light measurements were also made with the new multi spectral light meter
Chemical oceanography 
Other chemical oceanographic measurementsQuantity: number of stations = 10
Description: Algal samples were taken and stored frozen for C/N analysis
Biology and fisheries 
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: number of stations = 27
Description: CTD/rosette water sampler deployed at each station to aquire chlorophyll a data from the depth profile
ZooplanktonQuantity: number of stations = 27
Description: Duplicate hauls taken at each station
Geology and geophysics 
Core - soft bottomQuantity: number of stations = 2
Description: Bowers & Connelly corer deployed at stations 38 and 24. Sediment samples aquired and stored for C/N and chlorophyll a analysis and a further sample set for benthic assessment.