PMO OpenIR  > 暗物质和空间天文实验室
Midterm periods of solar filaments
Zou, Peng; Li, Qixiu
2014
Source PublicationJOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
ISSN2169-9380
Volume119Issue:12Pages:9357-9368
AbstractOn the basis of the Carte Synoptique catalogue of solar filaments from March 1919 to December 1989, we measure power spectra of detrended full-disk (FSFNs, latitudinal bands: 0 degrees-90 degrees), low-latitude (LSFNs, latitudinal bands: <50 degrees), and high-latitude (HSFNs, latitudinal bands: >= 50 degrees) solar filament numbers by Maximum Entropy Method (MEM) and Continuous wavelet transform to detect midterm periods. It is found as the following: (1) FSFNs and LSFNs have the same midterm periodicity, while HSFNs show a different midrange periodicity. Some periods frequently mentioned in other solar indices are also detected from the solar filament numbers, such as 2-3 year period (quasi-biennial oscillation-QBO), similar to 1.7 year, similar to 1.3 year, similar to 1 year, 150-157 day period (Rieger period), and 6.0-6.4 months (Rieger-type period). These periods are intermittent during considered time span. Some of them are missing in some solar cycles. (2) QBO is detected from total data and most solar cycles of FSFNs, LSFNs, and HSFNs. It may be related to oscillation of magnetic field of solar surface. (3) Approximately 1.3 year period occasionally appears, but similar to 1.7 year period is hardly seen. These two periods probably are seasonal effects. (4) Approximately 1 year period is detected from both total data and every solar cycle of FSFNs and LSFNs but hardly detected from HSFNs. It is perhaps connected with sunspot activity. (5) Rieger period of 5.0-5.2 months is detected in total data and even solar cycles of HSFNs. Rieger-type period of 6.0-6.4 months is found in total data and most solar cycles, except cycle 18 of LSFNs and FSFNs. These periods seem to be subharmonics of similar to 11 year period.
Subject Area天文和天体物理
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/11558
Collection暗物质和空间天文实验室
Recommended Citation
GB/T 7714
Zou, Peng,Li, Qixiu. Midterm periods of solar filaments[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2014,119(12):9357-9368.
APA Zou, Peng,&Li, Qixiu.(2014).Midterm periods of solar filaments.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,119(12),9357-9368.
MLA Zou, Peng,et al."Midterm periods of solar filaments".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 119.12(2014):9357-9368.
Files in This Item:
File Name/Size DocType Version Access License
201402003Midterm per(1131KB) 开放获取CC BY-NC-SAView Application Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Zou, Peng]'s Articles
[Li, Qixiu]'s Articles
Baidu academic
Similar articles in Baidu academic
[Zou, Peng]'s Articles
[Li, Qixiu]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Zou, Peng]'s Articles
[Li, Qixiu]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: 201402003Midterm periods of solar filaments.pdf
Format: Adobe PDF
This file does not support browsing at this time
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.