Cruise inventory

RV Cirolana CIR6/92

Cruise summary report

Cruise Info. 
Ship name (ship code)RV Cirolana (74CZ)
Cruise identifierCIR6/92
Cruise period1992-05-21 — 1992-06-15
StatusCompleted
Port of departureLowestoft, United Kingdom
Port of returnLowestoft, United Kingdom
PurposeResearch
Objectives1. To participate in the international mackerel and horse mackerel egg survey of the western stocks, with responsibility for sampling coverage of the area from 48ºN to 52ºN.
2. To sample mackerel with the Danish Foto trawl and with handlines to determine levels of astresia in the female spawning stock. It was decided prior to the cruise that this task would be carried out by from the charter vessel Kings Cross.
3. To use the Danish Foto trawl to investigate the vertical distribution of spawning of mackerel.
4. To investigate the vertical distribution of mackerel egg production using the LHPR sampling system.
5. To measure the low molecular weight hydrocarbons from surface water over the whole egg survey area. Several problems were encountered on the cruise which prevented a full time sampling programme.
Chief scientistJohn H Nichols (Ministry of Agriculture, Fisheries and Food Lowestoft Fisheries Laboratory)
Cruise reportRV Cirolana CIR6/92 cruise report ci6_92.pdf — access key 'C' (0.24 MB) 
Ocean/sea areas 
GeneralEnglish Channel
South East Atlantic Ocean (limit 20W)
SpecificCeltic Sea / Western Approaches
Track chartsRV Cirolana CIR6/92 cruise track — trk3803.html
Measurements 
Physical oceanography 
Surface measurements underway (T,S)Quantity: activity duration in days = 25
Description: continuous surface chlorophyl
CTD stationsQuantity: number of stations = 132
Description: surface salinity only
Biology and fisheries 
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: number of stations = 97
PhytoplanktonQuantity: number of stations = 132
Description: Made with the 53cm plankton sampler.
ZooplanktonQuantity: number of stations = 132
Description: Made with the 53cm plankton sampler.
Meteorology 
Other meteorological measurementsQuantity: activity duration in days = 25
Description: continuous irradiance