Cruise inventory

RRS Charles Darwin CD12

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS Charles Darwin (74AB)
Cruise identifierCD12
Cruise period1986-04-30 — 1986-05-15
Port of departureFalmouth, United Kingdom
Port of returnFalmouth, United Kingdom
Objectives1) Sampling and analysis of biogenic sulphur compounds in the sea and marine atmosphere at the time of Phaeocystis blooms in the southern North Sea (contract financed by the CEC).
2) Related hydrographic observations (temperature, salinity, chlorophyll, inorganic nutrients, etc.), and measurements of primary production using Carbon 14 and Oxygen methods.
3) Biochemical studies on Phaeocystis blooms - partitioning of organic carbon and nitrogen in dissolved and particulate phases, mucous production, and phosphorus assimilation.
4) Secondary production (copepods) and geochemical (water column and sediments) studies in waters affected by Phaeocystis.
Chief scientistPatrick M Holligan (Marine Biological Association of the UK)
Cruise reportRRS Charles Darwin CD12 cruise report cd12.pdf — access key 'C' (0.26 MB) 
Ocean/sea areas 
GeneralNorth Sea
SpecificEnglish Channel/ S. North Sea
Track chartsRRS Charles Darwin CD12 cruise track — trk3172a.html RRS Charles Darwin CD12 cruise track — trk3172b.html
Physical oceanography 
Surface measurements underway (T,S)
Water bottle stationsQuantity: number of stations = 50
Description: More than 50 S surface only
CTD stationsQuantity: number of stations = 27
Chemical oceanography 
Biology and fisheries 
Primary productivity
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: number of samples = 500
Particulate organic matter (inc POC, PON)
ZooplanktonDescription: survey:taxonomy,distribution
Geology and geophysics 
DredgeQuantity: number of samples = 10
GrabQuantity: number of samples = 11
Description: chemical analysis of sediments