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Cruise inventory

RRS Challenger CH23A

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS Challenger (74CH)
Cruise identifierCH23A
Cruise period1988-01-06 — 1988-01-27
Port of departureAberdeen, United Kingdom
Port of returnAberdeen, United Kingdom
Objectives1. To carry out a survey of the distribution of herring larvae, plankton and hydrographic parameters in the North Sea.
2. To perform a series of intensive studies of the vertical distribution of herring larvae.
Chief scientistMike R Heath (Department of Agriculture and Fisheries for Scotland Aberdeen Marine Laboratory)
Cruise reportRRS Challenger CH23A cruise report ch23a_88.pdf — access key 'C' (0.12 MB) 
Ocean/sea areas 
GeneralNorth Sea
Track chartsRRS Challenger CH23A cruise track — trk3579.html
Physical oceanography 
CTD stationsQuantity: number of stations = 11
Subsurface temperature and salinity measurements
Optics (eg underwater light levels)
Current profiler (eg ADCP)Description: all trip
Chemical oceanography 
PhosphateQuantity: number of stations = 11
NitrateQuantity: number of stations = 11
Biology and fisheries 
Eggs and larvaeDescription: routine sampling of herring larvae carried out using a 5 metre squared Methot-Isaacs Kidd net.