European Directory of Marine Environmental Data (EDMED)

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Data set name

Oceanographic data from the ICES Patchiness Experiment (PEX) in 1986 in the southern Baltic Sea

Data holding centreInternational Council for the Exploration of the Sea (ICES)
CountryDenmark  Denmark
Time periodFrom March to April 1986
Geographical area

60 mile x 30 mile grid in Southern Baltic Sea


Salinity of the water column; Temperature of the water column




PEX was an intensive multi-ship exercise designed to elucidate and quantify small-scale structures in the Baltic Sea. Scientific objectives included investigating the role of physical, chemical and biological interactions in determining ecological stability, as well as providing a statistical basis for assessing the significance of environmental data collected for monitoring purposes. PEX was a regimented exercise with research ships working stations along one line of an 11x6 grid. Two sizes of grids were employed, the larger one being called the eddy grid, the smaller one the slope grid. Within this grid, 4 ships anchored and worked hourly stations during the period of the expedition. In addition current meters were deployed from 11 moorings strategically placed within the eddy grid. Fifteen Research Ships from 6 countries (Finland, USSR, Poland, East Germany, West Germany, Sweden) contributed 1600 stations and 33 current meter time series to PEX. Full details of shipborne observations, including information about the data held in this data set and elsewhere, is contained in the PC-based ICES ROSCOP database. The ROSCOP database can also be interrogated on-line via a web-interface.

OriginatorsInternational Council for the Exploration of the Sea (ICES)
Data web site
OrganisationInternational Council for the Exploration of the Sea (ICES)
ContactNot supplied (General Secretary)

International Council for the Exploration of the Sea (ICES)
H. C. Andersens Boulevard 44-46
Copenhagen V


Telephone0045 3338 6700
Facsimile+45 3393 4215
Collating centreInternational Council for the Exploration of the Sea (ICES)
Local identifier7001009
Global identifier1428
Last revised2009-02-09