RRS Challenger CH9/77

Cruise summary report

Cruise Info.
Ship name (ship code)	RRS Challenger (74CH)
Cruise identifier	CH9/77
Cruise period	1977-06-10 — 1977-06-25
Status	Completed
Objectives	CTD measurements, current measurements (current meters and drifters), water sampling and biological sampling.
Chief scientist	John H Simpson (University of Wales, Bangor School of Ocean Sciences)
Ocean/sea areas
General	North East Atlantic Ocean (limit 40W)
Measurements
Physical oceanography
Surface measurements underway (T,S)	Quantity: number of measurements = 162 Description: T only
CTD stations	Quantity: number of stations = 77
Subsurface temperature and salinity measurements
Current meters	Quantity: number of deployments = 3 Description: 7 days
Surface drifters/drifting buoys	Quantity: number of deployments = 5 Description: drogues
Chemical oceanography
Oxygen	Quantity: number of samples = 162
Nitrate	Quantity: number of samples = 162
Nitrite	Quantity: number of samples = 162
Radioactivity	Quantity: number of samples = 162
Other chemical oceanographic measurements	Quantity: number of samples = 162 Description: chlorinity
Biology and fisheries
Primary productivity	Quantity: number of measurements = 162
Phytoplankton	Quantity: number of samples = 162