The periodicity of aurorae in the years 1001–1900 |
| |
| Authors: | Ivanka Charvátová-Jakubcová Jaroslav St?e?tík Ladislav K?ivský Reviewer M Hvo?dara |
| |
| Institution: | (1) Geophysical Institute, Czechosl. Acad. Sci., Prague;(2) Astronomical Institute, Czechosl. Acad. Sci., Ond ejov |
| |
| Abstract: | Summary The sequence of aurorae, observed at latitudes up to 55° between the years 1001 and 1900 was processed by methods of spectral analysis. The same methods were applied to parts of various duration of this interval. The periods predominant in the time series under investigation were determined. In all the selected parts of the interval, these periods are always located within the same frequency band. Their position is related to the periods corresponding to mutual conjunctions of the large planets.
           ¶rt; n    uu, a ¶rt;a  u a uma ¶rt; 55° nu¶rt; 1001–1900, ama nu n u m¶rt; n ma  aaua.   a n¶rt; ¶rt;  am a ¶rt;u  m umaa.  u n¶rt; na¶rt;au nu¶rt; u¶rt;a ¶rt;a.  mu nu¶rt; ¶rt; a am umaa ¶rt;a a¶rt;m ¶rt;ua ¶rt;uaan amm.  nu mum nu¶rt;au, mmm uu au  u u nam.
|
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
