Wavelet analysis of sunspot relative numbers

被引：28
|
作者：
Han, YB [1 ]
Han, YG
机构：
[1] Chinese Acad Sci, Natl Astronom Observ, Beijing 100012, Peoples R China
[2] Beijing Polytech Univ, Dept Appl Math, Beijing 100022, Peoples R China
来源：
CHINESE SCIENCE BULLETIN | 2002年 / 47卷 / 07期
基金：
中国国家自然科学基金;
关键词：
sunspot numbers; prediction; wavelet; time-variation;
D O I：
10.1360/02tb9140
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
The time series of the monthly smoothed sunspot numbers in 1749-2000 is analyzed with the wavelet. The result shows that besides the known time-variation of the period about 11 years, other main periods of the sunspot numbers, such as the periods of about 100 years and so on, vary with time. We suggest that the time-variation of the main periods is the manifestation of the complex variation of sunspot numbers. It is significant to make a thorough study of the character and mechanism of the time-variation of the periods for proving prediction of sunspot numbers, especially for understanding the variation process of sunspot numbers.
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页码：609 / 612
页数：4
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