Galactic cosmic ray fluctuation parameter as an indicator of the degree of magnetic field inhomogeneity |
| |
| Authors: | V I Kozlov V V Kozlov |
| |
| Institution: | 1.Institute of Cosmophysical Research and Aeronomy, Siberian Branch,Russian Academy of Sciences,Yakutsk,Russia |
| |
| Abstract: | The parameter of cosmic ray fluctuations, which indicates the degree of IMF inhomogeneity, was introduced in order to quantitatively
describe the dynamics of the galactic cosmic ray (GCR) intensity fluctuations during the geoeffective phases of the 11-year
cycle. The 5-min data of the high-latitude neutron monitor at Oulu station (Finland) during cycles 20–23 was used in the calculations.
The nonrandom non-Gaussian character of the GCR fluctuation parameter is caused by the nonstationary semiannual variation
reflecting the transient nonstationary oscillatory process of sign reversal of the general solar magnetic field. This transient
oscillatory process is responsible for the maximal geoeffectiveness and duration of the phase of polarity reversal, which
manifests itself in a sharp and deep GCR intensity minimum during the final stage of the field sign reversal. The invariant
of the 11-year “amplitude-duration” cycle was confirmed on a new basis: the LF drift of the “low” cycle period was detected,
which was observed in an increase in the duration of cycle 23 we anticipated. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
