Past and Present of Polish Geomagnetic Observatories

摘要

The paper outlines the history of Polish magnetic observatories, beginning from the oldest, presently inactive one, at Swider, to the three observatories operating at present: Belsk, Hel, and Hornsund. We describe changes in the equipment throughout the years, the present instrumentation and accuracies. While discussing the quality of data, of utmost importance is the lack of gaps in the recordings, and the high stability of bases. A specific trait of our observatories is the fact that the instruments they use are mostly of our own make.