Comparison of one year of data on geomagnetic pulsations at geostationary orbit and at a low latitude ground station |
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| Affiliation: | 1. Faculty of Engineering, Menoufia University, Shebin El-Kom, Egypt;2. Faculty of Computers and Information, Cairo University, Egypt;3. Faculty of Computers and Information, Mansoura University, Egypt;1. Department of Pathology, Oslo University Hospital, Oslo, Norway;2. Institute of Clinical Medicine, University of Oslo, Oslo, Norway;3. Centre for Cancer Biomedicine, University of Oslo, Oslo, Norway;4. Department of Molecular Cell Biology, Institute for Cancer Research, Oslo University Hospital, Oslo, Norway;5. Department of Informatics, University of Oslo, Oslo, Norway |
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| Abstract: | In spite of several satellite-ground comparisons of pulsation data, many questions remain open for future investigation. This paper reports on a comparison of the satellite ATS 6 and Nagycenk data (L ∼ 1.9) on pulsation occurrence, activity, period and switches. This low latitude ground station sees a lot of activity which is less evident at L ∼ 6.6, i.e. these pulsations are due to amplification in the inner magnetosphere. The ATS harmonic structure is shown to have little influence on the ground activity. The inner magnetospheric amplification is changing and is influenced by solar wind velocity. The switches confirm that a large part of the two pulsation activities are of different origin, supposedly at least partly from a Kelvin-Helmholtz source at L ∼ 6.6 and from the upstream source at L ∼ 1.9. |
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