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A STATISTICAL ANALYSIS OF 50 YEARS OF DAILY SOLAR WIND VELOCITY DATA
Li KJ(李可军)1,2; Zhang J(张娟)1,2,3; Feng, W.4,5
Source PublicationASTRONOMICAL JOURNAL
2016-05-01
Volume151Issue:5
DOI10.3847/004-6256/151/5/128
Contribution Rank第1完成单位
Indexed BySCI
KeywordSolar Wind Sun: Activity Sun: Corona
Abstract

Daily mean value of solar wind velocity measured by various spacecraft near the Earth's orbit from 1963 November 27 to 2013 December 31 given by OMNIWeb is utilized to investigate its characteristics through statistical analyses. The percent probability distribution of solar wind velocity can be described well by the F distribution function with the most probable velocity to be 373 km s(-1). It is found that solar wind could be statistically classified into three groups: (1) the low-velocity wind, v < 450 km s(-1), which positively responds to, and in the cycle phase lags, the solar activity cycle; (2) the high -velocity wind, 450 >=, v < 725 km s(-1), , which negatively responds to, and in the cycle phase leads, the solar activity cycle, but in a short timescale (one-rotation period) lags the solar activity cycle; and (3) the extreme-high-velocity wind, v ?, 725 km s(-1),, which positively responds to, and in cycle phase leads, the solar activity cycle. A period of about 27 days is determined for solar wind in the first two groups, so that solar wind in the groups is modulated by the solar rotation and related with solar long-life magnetic structures. Solar wind of extreme high velocity appears mainly at the descending phases of the solar cycles.

Funding ProjectNational Natural Science Foundation of China[11573065] ; National Natural Science Foundation of China[11221063] ; National Natural Science Foundation of China[11273057] ; 973 program[2012CB957801] ; Key Laboratory of Modern Astronomy and Astrophysics (Nanjing University)
Funding OrganizationNational Natural Science Foundation of China(11573065, 11221063, 11273057) ; 973 program(2012CB957801) ; Key Laboratory of Modern Astronomy and Astrophysics (Nanjing University)
Language英语
Subject Area天文学 ; 太阳与太阳系 ; 太阳物理学
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherIOP PUBLISHING LTD
Publication PlaceTEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN0004-6256
URL查看原文
Archive Date2016-12-12
WOS IDWOS:000375610400019
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordMAGNETIC-FIELDS ; CORONAL HOLES ; NETWORK ; PERIODICITY ; ROTATION ; PHASE ; SUN
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/9595
Collection太阳物理研究组
Corresponding AuthorFeng, W.
Affiliation1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, China
2.Key Laboratory of Solar Activity, National Astronomical Observatories, CAS, Beijing 100012, China
3.University of Chinese Academy of Sciences, Beijing 100049, China
4.Research Center of Analysis and Measurement, Kunming University of Science and Technology, Kunming 650093, China
5.Key Laboratory of Modern Astronomy and Astrophysics (Nanjing University) Ministry of Education, Nanjing 210093, China
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Li KJ,Zhang J,Feng, W.. A STATISTICAL ANALYSIS OF 50 YEARS OF DAILY SOLAR WIND VELOCITY DATA[J]. ASTRONOMICAL JOURNAL,2016,151(5).
APA Li KJ,Zhang J,&Feng, W..(2016).A STATISTICAL ANALYSIS OF 50 YEARS OF DAILY SOLAR WIND VELOCITY DATA.ASTRONOMICAL JOURNAL,151(5).
MLA Li KJ,et al."A STATISTICAL ANALYSIS OF 50 YEARS OF DAILY SOLAR WIND VELOCITY DATA".ASTRONOMICAL JOURNAL 151.5(2016).
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