Cruise inventory

RRS Challenger CH39

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS Challenger (74CH)
Cruise identifierCH39
Cruise period1988-11-01 — 1988-11-13
StatusCompleted
Port of departureGreat Yarmouth, United Kingdom
Port of returnGreat Yarmouth, United Kingdom
PurposeResearch
ObjectivesChallenger cruise 39 was a component cruise in the fifteen monthly cruises planned as part of the NERC North Sea Community Programme. This was the fourth cruise in the programme. For these cruises a set cruise track covering the different water masses and inputs to the southern North Sea, south of 56 30'N has been designed. The aim was to make measurements at the 127 stations on the track. The measurements are: salinity, temperature, transmission, fluorescence, irradience, nutrients, phytoplankton, dissolved oxygen, suspended solids and trace metals using a CTD rosette water bottle system, and net trawls for zooplankton. Underway measurements are made of irradience, and Acoustic Doppler Current Profilers (ADCP) and temperature, salinity, fluorescence, transmission and oxygen on instruments fed from a "non-toxic" seawater supply. Current meter and current profiler moorings were to be serviced at six sites.
Chief scientistDavid J Hydes (Institute of Oceanographic Sciences Wormley Laboratory)
ProjectNERC North Sea Project
Coordinating bodyNERC
Cruise reportRRS Challenger CH39 cruise report ch39_88.pdf — access key 'C' (0.84 MB) 
Ocean/sea areas 
GeneralNorth Sea
Measurements 
Physical oceanography 
Surface measurements underway (T,S)
CTD stationsQuantity: number of stations = 113
Transparency (eg transmissometer)Description: surface transmission
Transparency (eg transmissometer)Quantity: number of stations = 111
Current metersQuantity: number of recoveries = 4
Description: 5 deployed;30 days
Chemical oceanography 
OxygenDescription: surface oxygen
OxygenQuantity: number of stations = 111
PhosphateQuantity: number of stations = 111
NitrateQuantity: number of stations = 111
NitriteQuantity: number of stations = 111
AmmoniaQuantity: number of stations = 111
SilicateQuantity: number of stations = 111
Contamination 
Suspended matterQuantity: number of stations = 111
Trace metalsQuantity: number of stations = 111
Biology and fisheries 
Primary productivityQuantity: number of stations = 11
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: number of stations = 110
PhytoplanktonQuantity: number of stations = 111
ZooplanktonQuantity: number of stations = 84
Data held at BODC 
Series/Profiles 
219  Bottle station
Quality control flags
Ammonium and ammonia concentration parameters in water bodies
Chlorophyll pigment concentrations in water bodies
Silicate concentration parameters in the water column
Vertical spatial coordinates
Nitrate concentration parameters in the water column
Reference numbers
Nitrite concentration parameters in the water column
Phosphate concentration parameters in the water column
Phaeopigment concentrations in the water column
Quality control flags
Ammonium and ammonia concentration parameters in water bodies
Chlorophyll pigment concentrations in water bodies
Silicate concentration parameters in the water column
Vertical spatial coordinates
Nitrate concentration parameters in the water column
Reference numbers
Nitrite concentration parameters in the water column
Phosphate concentration parameters in the water column
Phaeopigment concentrations in the water column

BODC idDate/TimeLocationDoc.
113  CTD/STD cast
Density of the water column
Transmittance and attenuance of the water column
Visible waveband radiance and irradiance measurements in the water column
Chlorophyll pigment concentrations in water bodies
Vertical spatial coordinates
Salinity of the water column
Concentration of suspended particulate material in the water column
Temperature of the water column
Dissolved oxygen parameters in the water column
Density of the water column
Transmittance and attenuance of the water column
Visible waveband radiance and irradiance measurements in the water column
Chlorophyll pigment concentrations in water bodies
Vertical spatial coordinates
Salinity of the water column
Concentration of suspended particulate material in the water column
Temperature of the water column
Dissolved oxygen parameters in the water column

BODC idDate/TimeLocationDoc.
Discrete samples 
115  CTD frame plus rosette samplerAmmonium and ammonia concentration parameters in water bodies
Zooplankton taxonomy-related abundance per unit volume of the water column
Density of the water column
Transmittance and attenuance of the water column
Visible waveband radiance and irradiance measurements in the water column
Chlorophyll pigment concentrations in water bodies
Phytoplankton taxonomic abundance in water bodies
Primary production in the water column
Metadata parameters
Silicate concentration parameters in the water column
Salinity of the water column
Concentration of suspended particulate material in the water column
Nitrate concentration parameters in the water column
Temperature of the water column
Dissolved oxygen parameters in the water column
Microzooplankton taxonomic abundance in water bodies
Microzooplankton generic abundance in water bodies
Nitrite concentration parameters in the water column
Phosphate concentration parameters in the water column
Phaeopigment concentrations in the water column
Phytoplankton generic abundance in water bodies