Cruise inventory

RRS Challenger CH91

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS Challenger (74CH)
Cruise identifierCH91
Cruise period1992-05-05 — 1992-05-20
StatusCompleted
Port of departureBarry, United Kingdom
Port of returnPlymouth, United Kingdom
PurposeResearch
ObjectivesStudy of fish spawning area
Chief scientistIan Joint (Plymouth Marine Laboratory)
Ocean/sea areas 
GeneralCeltic Sea
SpecificNorth east Atlantic, Little Sole Bank
Track chartsRRS Challenger CH91 cruise track — trk3735.html
Measurements 
Physical oceanography 
Surface measurements underway (T,S)Quantity: number of surveys = 13
Description: 6hr transects
CTD stationsQuantity: number of profiles = 35
Description: CTD casts to within 20m of bottom
Transparency (eg transmissometer)Quantity: number of profiles = 35
Description: transmissometry and light (PAR) attached to CTD
Transparency (eg transmissometer)Quantity: number of surveys = 13
Description: surface water for transmissometery, 6hr transects Little Sole Bank
Chemical oceanography 
PhosphateQuantity: number of surveys = 13
Description: surface water, 6hr transects across Little Sole Bank
NitrateQuantity: number of surveys = 13
Description: surface water, 6hr transects of Little Sole Bank
NitriteQuantity: number of surveys = 13
Description: surface water, 6hr transects across Little Sole Bank
SilicateQuantity: number of surveys = 13
Description: surface water, 6hr transects across Little Sole Bank
Biology and fisheries 
Primary productivityQuantity: number of experiments = 10
Description: In situ primary productivity
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: number of profiles = 35
Description: Fluorescence, attached to CTD
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: number of surveys = 13
Description: surface water for fluorescence 6hr transects over Little Sole Bank
ZooplanktonQuantity: number of samples = 1900
Description: Copepod egg productions, gut fluorescence measurements
Pelagic bacteria/micro-organismsQuantity: number of experiments = 10
Description: Determination of bacterial productivity
Moorings, landers, buoys 
Physical oceanography 
Surface drifters/drifting buoys48° 36' 0" N  9° 25' 59" W — 4 ARGOS drifting buoys deployed 8 May, recovered 18 May
Data held at BODC 
Discrete samples 
36  CTD frame plus rosette samplerDensity of the water column
Transmittance and attenuance of the water column
Visible waveband radiance and irradiance measurements in the water column
Primary production in the water column
Chlorophyll pigment concentrations in water bodies
Bacterial production in the water column
Silicate concentration parameters in the water column
Salinity of the water column
Nitrate concentration parameters in the water column
Temperature of the water column
Phaeopigment concentrations in the water column
Nitrite concentration parameters in the water column
Phosphate concentration parameters in the water column