Temporal evolution of statistical features of the sunspot cycles

被引：3
|
作者：
Ogurtsov, Maxim [1 ,2 ]
Jungner, Hogne [3 ]
机构：
[1] Russian Acad Sci, AF Ioffe Physicotech Inst, Lab Cosm Rays, St Petersburg 194021, Russia
[2] Cent Astron Observ Pulkovo, Lab Space Weather Problems, St Petersburg 196140, Russia
[3] Univ Helsinki, Dating Lab, FI-00014 Helsinki, Finland
来源：
ADVANCES IN SPACE RESEARCH | 2012年 / 50卷 / 06期
关键词：
Solar variability; Solar magnetic field; SOLAR-CYCLE; XVIII-CENTURY; LOST; NUMBERS;
D O I：
10.1016/j.asr.2011.03.035
中图分类号：
V [航空、航天];
学科分类号：
08 ; 0825 ;
摘要：
Analysis of the general statistical features of the sunspot cycles in the period 1700-1996 AD, including the Gnevyshev-Ohl rule, Waldmeier rule and an amplitude-period effect, was performed for both Wolf numbers and group sunspot numbers. It was shown that for both solar indices all the statistical effects are weaker over the time interval 1700-1855 AD than over the time interval 1856-1996 AD. Possible causes of this difference are discussed. (c) 2011 Published by Elsevier Ltd. on behalf of COSPAR.
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页码：669 / 675
页数：7
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