IGGCAS OpenIR  > 地球与行星物理院重点实验室
Responding trends of ionospheric F-2-layer to weaker geomagnetic activities
Chen, Yiding1,2,3,4; Liu, Libo1,2,4,5; Le, Huijun1,2,4,5; Zhang, Hui1,2,4,5; Zhang, Ruilong1,2,4,5
2022-04-01
Source PublicationJOURNAL OF SPACE WEATHER AND SPACE CLIMATE
ISSN2115-7251
Volume12Pages:12
AbstractGeomagnetic activities frequently occur in varying degrees. Strong geomagnetic activities, which have been widely investigated, occur occasionally; they can cause distinguishable and significant disturbances in the ionosphere. Weaker geomagnetic activities frequently appear, whereas their effects are generally difficult to be distinguished from complex ionospheric variations. Weaker geomagnetic activities play important roles in ionospheric day-to-day variability thus should deserve further attention. In this study, long-term (longer than one solar cycle) measurements of the F-2-layer critical frequency (f(o)F(2)) were collected to statistically investigate ionospheric responses to weaker geomagnetic activities (Ap < 60). The responding trends of low- to high-latitude f(o)F(2) to increasing geomagnetic activity are presented for the first time; they are statistically evident. Both increasing and decreasing trends can occur, depending on latitudes and seasons. The trend gradually transits from high-latitude decreasing trends to equatorial increasing trends with decreasing latitude, and this transition is seasonally dependent. As a result, the trend has a seasonal difference at mid-latitudes. The responding trend is generally more distinct at higher latitudes and in the equatorial region than at mid-latitudes, and the responding intensity is largest at higher latitudes. Although theoretically, geomagnetic activities can disturb the ionosphere through multiple mechanisms, the morphology of the trend suggests that the frequent weaker geomagnetic activities modulate the high- to low-latitude ionosphere mainly through disturbing high-latitude thermospheric composition and further altering the thermospheric background circulation.
Keywordionospheric disturbance weaker geomagnetic activity responding trend thermospheric composition
DOI10.1051/swsc/2022005
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association, CAS ; Youth Innovation Promotion Association, CAS ; Youth Innovation Promotion Association, CAS ; Youth Innovation Promotion Association, CAS ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association, CAS ; Youth Innovation Promotion Association, CAS ; Youth Innovation Promotion Association, CAS ; Youth Innovation Promotion Association, CAS ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association, CAS ; Youth Innovation Promotion Association, CAS ; Youth Innovation Promotion Association, CAS ; Youth Innovation Promotion Association, CAS ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association, CAS ; Youth Innovation Promotion Association, CAS ; Youth Innovation Promotion Association, CAS ; Youth Innovation Promotion Association, CAS
WOS KeywordSOLAR ; THERMOSPHERE ; F2-LAYER ; VARIABILITY ; STORMS
Language英语
Funding ProjectNational Natural Science Foundation of China[41922029] ; National Natural Science Foundation of China[42030202] ; National Natural Science Foundation of China[41904140] ; Youth Innovation Promotion Association, CAS[Y202021]
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association, CAS ; Youth Innovation Promotion Association, CAS ; Youth Innovation Promotion Association, CAS ; Youth Innovation Promotion Association, CAS ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association, CAS ; Youth Innovation Promotion Association, CAS ; Youth Innovation Promotion Association, CAS ; Youth Innovation Promotion Association, CAS ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association, CAS ; Youth Innovation Promotion Association, CAS ; Youth Innovation Promotion Association, CAS ; Youth Innovation Promotion Association, CAS ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association, CAS ; Youth Innovation Promotion Association, CAS ; Youth Innovation Promotion Association, CAS ; Youth Innovation Promotion Association, CAS
WOS Research AreaAstronomy & Astrophysics ; Geochemistry & Geophysics ; Meteorology & Atmospheric Sciences
WOS SubjectAstronomy & Astrophysics ; Geochemistry & Geophysics ; Meteorology & Atmospheric Sciences
WOS IDWOS:000776770000004
PublisherEDP SCIENCES S A
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/105057
Collection地球与行星物理院重点实验室
Corresponding AuthorChen, Yiding
Affiliation1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing 100029, Peoples R China
2.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, Beijing Natl Observ Space Environm, Beijing 100029, Peoples R China
4.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China
5.Chinese Acad Sci, Inst Geol & Geophys, Heilongjiang Mohe Observ Geophys, Beijing 100029, Peoples R China
First Author AffilicationInstitute of Geology and Geophysics, Chinese Academy of Sciences
Corresponding Author AffilicationInstitute of Geology and Geophysics, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Chen, Yiding,Liu, Libo,Le, Huijun,et al. Responding trends of ionospheric F-2-layer to weaker geomagnetic activities[J]. JOURNAL OF SPACE WEATHER AND SPACE CLIMATE,2022,12:12.
APA Chen, Yiding,Liu, Libo,Le, Huijun,Zhang, Hui,&Zhang, Ruilong.(2022).Responding trends of ionospheric F-2-layer to weaker geomagnetic activities.JOURNAL OF SPACE WEATHER AND SPACE CLIMATE,12,12.
MLA Chen, Yiding,et al."Responding trends of ionospheric F-2-layer to weaker geomagnetic activities".JOURNAL OF SPACE WEATHER AND SPACE CLIMATE 12(2022):12.
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