On midrange periodicities in solar radio flux and sunspot areas | |
Mei, Y.1,2,3,4; Deng, H.1,2,3,4; Wang, F.1,2,3,4 | |
刊名 | ASTROPHYSICS AND SPACE SCIENCE |
2018-04-01 | |
卷号 | 363期号:4页码:9 |
关键词 | Sun: activity Sun: magnetic fields Sun: radio radiation Methods: statistical |
ISSN号 | 0004-640X |
DOI | 10.1007/s10509-018-3306-1 |
英文摘要 | Using the Hilbert-Huang transform technique, we investigate the midrange periodicities in solar radio flux at 2800 MHz (F10.7) and sunspot areas (SAs) from February 1, 1947 to September 30, 2016. The following prominent results are found: (1) The quasi-periodic oscillations of both data sets are not identical, such as the rotational cycle, the midrange periodicities, and the Schwabe cycle. In particular, the midrange periodicities ranging from 37.9 days to 297.3 days are related to the magnetic Rossby-type waves; (2) The 1.3-year and 1.7-year fluctuations in solar activity indicators are surface manifestations (from photosphere to corona) of magnetic flux changes generated deep inside the Sun; (3) At the timescale of the Schwabe cycle, the complicated phase relationships in the three intervals (1947-1958, 1959-1988, and 1989-2016) agree with the produced periodicities of the magnetic Rossby-type waves. The findings indicate that the magnetic Rossby-type waves are the possible physical mechanism behind the midrange periodicities of solar activity indicators. Moreover, the significant change in the relationship between photospheric and coronal activity took place after the maximum of solar cycle 22 could be interpreted by the magnetic Rossby-type waves. |
资助项目 | National Key Research and Development Program of China[2016YFE0100300] ; National Natural Science Foundation of China (NSFC)[U1531132] ; National Natural Science Foundation of China (NSFC)[U1631129] ; National Natural Science Foundation of China (NSFC)[U1231205] ; Chinese Academy of Sciences (CAS)[U1531132] ; Chinese Academy of Sciences (CAS)[U1631129] ; Chinese Academy of Sciences (CAS)[U1231205] ; National Natural Science Foundation of China[11403009] ; National Natural Science Foundation of China[11773012] ; National Natural Science Foundation of China[11463003] ; CAS Key Laboratory of Solar Activity[KLSA201807] ; Astronomical Big Data Joint Research Center |
WOS关键词 | EMPIRICAL MODE DECOMPOSITION ; RIEGER-TYPE PERIODICITIES ; 10.7 CM FLUX ; MIDTERM PERIODICITIES ; GEOMAGNETIC-ACTIVITY ; HILBERT SPECTRUM ; ROSSBY WAVES ; CYCLE ; ROTATION ; FLARES |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | SPRINGER |
WOS记录号 | WOS:000429130000023 |
资助机构 | National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; CAS Key Laboratory of Solar Activity ; CAS Key Laboratory of Solar Activity ; Astronomical Big Data Joint Research Center ; Astronomical Big Data Joint Research Center ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; CAS Key Laboratory of Solar Activity ; CAS Key Laboratory of Solar Activity ; Astronomical Big Data Joint Research Center ; Astronomical Big Data Joint Research Center ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; CAS Key Laboratory of Solar Activity ; CAS Key Laboratory of Solar Activity ; Astronomical Big Data Joint Research Center ; Astronomical Big Data Joint Research Center ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; CAS Key Laboratory of Solar Activity ; CAS Key Laboratory of Solar Activity ; Astronomical Big Data Joint Research Center ; Astronomical Big Data Joint Research Center |
内容类型 | 期刊论文 |
源URL | [http://ir.bao.ac.cn/handle/114a11/37133] |
专题 | 中国科学院国家天文台 |
通讯作者 | Wang, F. |
作者单位 | 1.Guangzhou Univ, Ctr Astrophys, Guangzhou 510006, Guangdong, Peoples R China 2.Chinese Acad Sci, Yunnan Observ, Kunming 650216, Yunnan, Peoples R China 3.Natl Astron Observ, CAS Key Lab Solar Act, Beijing 100012, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
推荐引用方式 GB/T 7714 | Mei, Y.,Deng, H.,Wang, F.. On midrange periodicities in solar radio flux and sunspot areas[J]. ASTROPHYSICS AND SPACE SCIENCE,2018,363(4):9. |
APA | Mei, Y.,Deng, H.,&Wang, F..(2018).On midrange periodicities in solar radio flux and sunspot areas.ASTROPHYSICS AND SPACE SCIENCE,363(4),9. |
MLA | Mei, Y.,et al."On midrange periodicities in solar radio flux and sunspot areas".ASTROPHYSICS AND SPACE SCIENCE 363.4(2018):9. |
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