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Cyanobacterial blooms in the Gulf of Finland 1993

Data set information

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General  
Data holding centreFinnish Environment Institute
CountryFinland  Finland
ProjectHydrodynamical control of cyanobacterial blooms in the Baltic Sea: the effect of small-scale turbulence.
Time period12.- 24.7.1993
OngoingNo
Geographical area

Pilot grid stations and meso-scale surveys: area restricted by longitude 21° 50 min - 22° 40 min E and latitude 59° 05 min - 59° 21 min N. Biological-chemical samplings were made at five stations along transect 22° 12 min E.

Observations 
Parameters

Electrical conductivity of the water column; Chlorophyll pigment concentrations in water bodies; Wind strength and direction; Nitrate concentration parameters in the water column; Phosphate concentration parameters in the water column; Primary production in the water column; Salinity of the water column; Temperature of the water column; Phytoplankton taxonomic abundance in water bodies; Phytoplankton taxonomic biomass in water bodies

Instruments

Fluorometers; CTD; discrete water samplers; salinity sensor; autoanalysers; liquid scintillation counters

Description 
Summary

The cruise started on 12-14 July with a pilot survey at 12 grid stations. Vertical profiles of CTD, nutrient samplings and semiquantitative analysis of phytoplankton were made. During 15-23 July and intensive meso-scale biological-chemical-physical study was carried out. This consisted of: a) Repeated every night mapping of meso-scale hydrodynamical and fluorescence fields with an undulating CTD and surface flow-through measurements (temperature, salinity, density) b) Daily biological and chemical investigations at 5 sampling stations along transect 22 ° 12 min E selected on the basis of the previous night's meso-scale survey. Biological measurements were made from an integrated sample representing the upper mixed layer. Special attention was paid on frontal dynamics in changing wind conditions.

OriginatorsFinnish Institute of Marine Research
Availability 
OrganisationFinnish Environment Institute
AvailabilityUnknown
ContactKaisa Kononen (executive director)
Address

Baltic Organisations Network for Funding Science EEIG
Hämeentie 33
Helsinki

FI-00500
Finland

Telephone+358 40 581 1189
Facsimile+358947800044
Emailkaisa.kononen@bonuseeig.fi
Administration 
Collating centreFinnish Institute of Marine Research
Local identifier19001038
Global identifier2064
Last revised2009-11-23