Cruise inventory

RV Lough Foyle LF/21/97

Cruise summary report

Cruise Info. 
Ship name (ship code)RV Lough Foyle (74LG)
Cruise identifierLF/21/97
Cruise period1997-05-18 — 1997-05-22
StatusCompleted
Port of departureBelfast, United Kingdom
Port of returnBelfast, United Kingdom
PurposeResearch
ObjectivesThe objectives of this cruise were to study the impact of copepod grazing on the spring bloom, quantify the flux of particulate organic cabon to the benthos and service the CEFAS moorings. Detailed objectives were to:
1. Quantify phytoplankton production in two size fractions (Whole and <5.0um).
2. Estimate copepod grazing.
3. Collect samples of phytoplankton and zooplankton for later identification and enumeration.
4. Collect sediment samples for the determination of sediment pigment concentration.
5. Collect water samples for the determination of particulate aluminium and dissolved inorganic nutrients.
6. Service the CEFAS moorings at station 38A and in Liverpool Bay.
7. Undertake limited sampling of Liverpool Bay bottom sediments for heavy metals.
Chief scientistRichard Gowen (Department of Agriculture for Northern Ireland)
Cruise reportRV Lough Foyle LF/21/97 cruise report lf21_97.pdf — access key 'C' (0.05 MB) 
Ocean/sea areas 
GeneralIrish Sea and St. George's Channel
SpecificWestern Irish Sea and Liverpool Bay
Track chartsRV Lough Foyle LF/21/97 cruise track — lf21_97track.pdf (00 MB) 
Measurements 
Physical oceanography 
Current metersQuantity: number of recoveries = 3
Description: 3 moorings were recovered and serviced.
Current metersQuantity: number of recoveries = 1
Description: CEFAS mooring was recovered and redeployed.
Biology and fisheries 
ZooplanktonQuantity: number of samples = 1
Description: Production and grazing studies took place
CrustaceansQuantity: number of samples = 1
Description: Production and grazing studies took place
CrustaceansQuantity: activity duration in hours = 21
Description: Sampling of copepod gut pigment, the samples are taken at 3 hourly intervals.