On the possibility of long-range forecasts of geomagnetic activity |
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| Authors: | Jaroslav Halenka Reviewer A Janáčková |
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| Institution: | (1) Geophysical Institute, Czechosl. Acad. Sci., Prague |
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| Abstract: | Summary The relation between geomagnetic activity and solar activity is studied in long intervals and in individual 11-year cycles, characterized by certain basic parameters, in connection with investigating the prognostic significance of long-term fluctuations of geomagnetic activity 1, 2]. A number of properties as well as sufficiently close relations with a prognostic significance have been found, such as the secular variation of geomagnetic activity, the 22-year cycle of change in the form of the behaviour of geomagnetic activity in 11-year cycles, long-term concurrence of solar and geomagnetic activity and its changes within the 11-year cycle, relations between solar and geomagnetic parameters characterizing the 11-year cycle.
      a     auu u  u u  ¶rt;   u aum a mum ¶rt;u  n ma u u m¶rt; 11-mu  ua am mu ¶rt; ¶rt;m nuauaum amumu.
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