RV Lough Foyle LF/22/93
Cruise summary report
| Cruise Info. | |
| Ship name (ship code) | RV Lough Foyle (74LG) |
| Cruise identifier | LF/22/93 |
| Cruise period | 1993-09-14 — 1993-09-17 |
| Status | Completed |
| Port of departure | Belfast, United Kingdom |
| Port of return | Belfast, United Kingdom |
| Purpose | Research |
| Objectives | To 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 scientist | Brian Stewart (Department of Agriculture for Northern Ireland) |
| Cruise report |  (0.12 MB) |
| Ocean/sea areas | |
| General | Irish Sea and St. George's Channel |
| Specific | NW Irish Sea and North Channel |
| Track charts | (0.01 MB) |
| Measurements | |
| Physical oceanography | |
| CTD stations | Quantity: 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 measurements | Quantity: 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 measurements | Quantity: 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 |
| Zooplankton | Quantity: number of stations = 27 Description: Duplicate hauls taken at each station |
| Geology and geophysics | |
| Core - soft bottom | Quantity: 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. |
