Cruise inventory

RV Lough Foyle LF/05/96 Part I and II

Cruise summary report

Cruise Info. 
Ship name (ship code)RV Lough Foyle (74LG)
Cruise identifierLF/05/96 Part I and II
Cruise period1996-02-26 — 1996-02-29
StatusCompleted
Port of departureBelfast, United Kingdom
Port of returnBelfast, United Kingdom
PurposeResearch
ObjectivesTo provide environmental science students from the Queen's University of Belfast with a demonstration of oceanographic equipment and other instrumentation and techniques associated with the Biological Oceanography cruise programme.
1. To assess temperature, salinity and nutrient distributions over a grid of stations in the north western Irish Sea.
2. To recover moorings from station 38. Service moorings, attach instrumentation and redeploy at station 45 on the sampling grid.
3. To assess nutrient release from sediment at stations 45 and 47.
4. To assess differences in benthic composition between an intensively trawled region of the Irish Sea and an adjacent region where trawling was restricted by the DANI instrument mooring.
Chief scientistBrian Stewart (Department of Agriculture for Northern Ireland)
Cruise reportRV Lough Foyle LF/05/96 Part I and II cruise report lf05_96.pdf — access key 'C' (0.19 MB) 
Ocean/sea areas 
GeneralIrish Sea and St. George's Channel
SpecificNW Irish Sea and North Channel.
Track chartsRV Lough Foyle LF/05/96 Part I and II cruise track — lf05_96track.pdf (0.02 MB) 
Measurements 
Physical oceanography 
Water bottle stationsQuantity: number of samples = 42
Description: Taken during the 3 month period of deployment with a moored McLane water sampler. Sampled every other day at slack tide at approx the same depth. Samples were analysed for inorganic nitrogen and orthophosphate
CTD stationsQuantity: number of stations = 20
Description: Samples were taken every 10m over the depth profile at stations 38, 45 and 50
Subsurface temperature and salinity measurementsQuantity: number of stations = 20
Description: Samples were taken every 10m over the depth profile at stations 38, 45 and 50
Transparency (eg transmissometer)Quantity: number of stations = 20
Description: Daylight permitting, Secchi discs were taken at each station
Chemical oceanography 
OxygenQuantity: number of stations = 3
Description: At station 38, 45 and 50, samples were taken every 10 metres for the determination of oxygen by the Winkler method
Total - NQuantity: number of stations = 2
Description: Cores were taken at stations 38 and 47 and subsampled for C/N analysis
Biology and fisheries 
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: number of stations = 20
Description: Chlorophyll a. Samples were taken every 10m over the depth profile at stations 38, 45 and 50
SestonQuantity: number of hauls = 1
Description: Plankton haul taken at the entrace of Belfast Lough
Geology and geophysics 
GrabQuantity: number of deployments = 10
Description: The Day grab was deployed 5 times at station 38 between the mooring buoys, and again 5 times about half a mile south of the station
Core - soft bottomQuantity: number of stations = 2
Description: 3 sediment cores with overlying seawater were taken at stations 38 and 47 and incubated onboard ship at seawater temperature. The box corer was also deployed at station 38 to provide additional cores