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Scanning historical magnetograms kept in the archives of Institute of Geophysics Polish Ac. of Sc. |
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Reda, J., Kozlakiewicz, J., Neska, M., Czubak, P. |
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Institute of Geophysics Polish Academy of Sciences, Warsaw, Poland |
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The archival resources in the Institute of Geophysics PAS comprehend a large amount of analog magnetograms recorded in the geomagnetic observatories Świder (SWI), Hel (HLP), Belsk (BEL), Hornsund (HRN, Spitsbergen), and Arctowski (ARC, Antarctica). The oldest magnetograms are from Świder observatory which started its work in 1920. The last Polish observatories to stop analog recording were Hornsund and Arctowski in 1995. Analog recordings were conducted in different ways. In most cases recordings were made on photographic paper. However there were also used chart recorders equipped with a pen. For about two years now we have been performing a systematic scanning of historical magnetograms. So far all magnetograms of set No 1 from Belsk have been scanned, i.e., data covering the period from 1965 to 1987. We report on our actual experience concerning this scanning of historical magnetograms. |
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Observatories |
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oral |
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