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Central Geophysical Observatory at Belsk

The Central Geophysical Observatory at Belsk begun its regular activity in 1965. The Observatory continues most of the works of the observatory at Swider, which had been active since 1920. A strong increase of artificial disturbances, mainly magnetic, produced by electric railroads of Warsaw agglomeration, made it necessary to move the geomagnetic observations from Swider to another place, not very distant from Warsaw, yet much less disturbed.

The present scientific activity of the Observatory is carried out within two units:

The Laboratory of Physics of the Atmosphere

The Laboratory of Earth's Magnetism

related to the Department of Physics of the Atmosphere and Department of Geomagnetism.

The Laboratory of Earth's Magnetism works in the framework of the INTERMAGNET project. On-line magnetograms from Belsk, Hel and Hornsund are available here http://rtbel.igf.edu.pl. Additionally, this web location includes an application for data comparison of any two geomagnetic observatories. The Laboratory of Physics of the Atmosphere is a member of the AERONET and the EARLINET networks.

The Belsk Observatory is located at a distance of about 50 km south of Warsaw and about 2 km from the village Belsk Duzy. The premises of the Observatory, about 10 ha in area, is at the edge of the forest reserve Modrzewina, far away of people's settlements and automobile traffic. The Observatory is surrounded by typically agricultural regions (with fertile soil, mostly apple orchards), so the direct neighborhood is deprived of sources of major artificial geomagnetic field disturbances. It is only the electric railroad (DC powered) situated some 14 km away of the Observatory to the north that produces some small artificial magnetic disturbances, whose average level usually does not exceed 1 nT.

More information about the region in which the Observatory is located can be found, in English, Polish and German, on the internet pages of Grójec district http://www.grojec.pl to which the village Belsk Duzy belongs