Phase asynchrony between coronal index and sunspot numbers

被引:46
作者
Deng, L. H. [1 ,2 ]
Qu, Z. Q. [1 ]
Wang, K. R. [3 ]
Li, X. B. [1 ]
机构
[1] Chinese Acad Sci, Yunnan Astron Observ, Natl Astron Observ, Kunming 650011, Peoples R China
[2] Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
[3] N China Elect Power Univ, Beijing 102206, Peoples R China
基金
中国国家自然科学基金;
关键词
Sun: corona - sunspots; Methods: data analysis; SOLAR-ACTIVITY RECONSTRUCTION; WAVELET ANALYSIS; POLAR FACULAE; TIME-SERIES; LINE INTENSITY; GREEN CORONA; VARIABILITY; ASYMMETRY; CYCLE; SUN;
D O I
10.1016/j.asr.2012.07.017
中图分类号
V [航空、航天];
学科分类号
08 ; 0825 ;
摘要
In this paper, the phase asynchrony between coronal index and sunspot numbers is investigated. It is found that, (1) the sunspot numbers begin one month earlier than coronal index, which should mathematically lead to phase asynchrony between them but with a slight effect; (2) the 11-year Schwabe cycle is the only one period with statistical significance for coronal index and sunspot numbers, and the difference between the length of the Schwabe cycle of them should also lead to phase asynchrony between them; (3) although coronal index and sunspot numbers are coherent in low-frequency components corresponding to the 11-year Schwabe cycle, they are asynchronous in phase in high-frequency components; (4) their different definitions and physical meanings may be a major rea ion why there is a phase asynchrony between them. (C) 2012 COSPAR. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码:1425 / 1433
页数:9
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