Connections between high- and middle-latitude pulsations |
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| Institution: | 1. Geodetic and Geophysical Research Institute of the Hungarian Academy of Sciences, Sopron, POB 5, H-9401, Hungary;2. Physical Institute, University of Oslo, 0316 Oslo, Norway;3. Auroral Observatory, University of Troms0, 9100 Tromsø, Norway;1. Centre for Health Services Research, School of Health Sciences, City, University of London, EC1R 1UW, London, UK;2. King''s College London, Institute of Psychiatry, Psychology and Neuroscience, De Crespigny Park, Denmark Hill, SE5 8AF, London, UK;3. King''s College Hospital NHS Foundation Trust, National Parkinson''s Foundation International Centre of Excellence, Denmark Hill, London, SE5 9RS, UK;4. East Kent Hospitals University NHS Foundation Trust, Ashford, Kent, TN24 0LZ, UK;5. South London and Maudsley NHS Foundation Trust, London, SE5 8AZ, UK;1. Department of Neurosurgery, Intensive Care and Pain Management, Paracelsus-Klinik Osnabrueck, Osnabrueck, Germany;2. Department of Radiology, Intensive Care and Pain Management, Paracelsus-Klinik Osnabrueck, Osnabrueck, Germany;3. Department of Anesthesiology, Intensive Care and Pain Management, Paracelsus-Klinik Osnabrueck, Osnabrueck, Germany;1. Cancer Center, Shanghai Tenth People’s Hospital, School of Medicine, Tongji University, Shanghai 200072, China;2. State Key Laboratory of Molecular Biology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, Shanghai 200031, China;3. School of Computer Science and Engineering, Sun Yat-sen University, Guangzhou 510000, China;4. School of Life Science, Hangzhou Institute for Advance Study, University of Chinese Academy of Sciences, Hangzhou 310024, China;1. Servicio de Anatomía Patológica, Hospital General Universitario Gregorio Marañón Madrid, Madrid, España;2. Servicio de Aparato Digestivo, Hospital General Universitario Gregorio Marañón Madrid, Madrid, España |
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| Abstract: | Pulsation data from the mid-latitude observatory Nagycenk have been compared with those of the auroral zone station Tromsø and of the high-latitude stations Hornsund and Ny Alesund. The comparison has shown a rather high correlation between the Pc3 pulsation activities at all sites, with an independent component at the highest latitudes. Mid-latitude Pc3 is also correlated with high-latitude Pc4 and Pc5. The results can be explained by two main types of (mid-latitude) pulsations occurring simultaneously or independently at different times. The first has constant periods up to the highest latitude studied and is thought to be of extramagnetospheric origin. Magnetospheric signals, however, have—at least in certain events—periods increasing with increasing latitude, up to the high-latitude stations. |
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