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Responding trends of ionospheric F-2-layer to weaker geomagnetic activities

文献类型：期刊论文

作者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
刊名JOURNAL OF SPACE WEATHER AND SPACE CLIMATE
出版日期2022-04-01
卷号12页码:12
ISSN号2115-7251
关键词ionospheric disturbance weaker geomagnetic activity responding trend thermospheric composition
DOI10.1051/swsc/2022005
英文摘要Geomagnetic 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.
WOS关键词SOLAR ; THERMOSPHERE ; F2-LAYER ; VARIABILITY ; STORMS
资助项目National 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]
WOS研究方向Astronomy & Astrophysics ; Geochemistry & Geophysics ; Meteorology & Atmospheric Sciences
语种英语
出版者EDP SCIENCES S A
WOS记录号WOS:000776770000004
资助机构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 ; 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
源URL[http://ir.iggcas.ac.cn/handle/132A11/105057]  
专题地质与地球物理研究所_中国科学院地球与行星物理重点实验室
通讯作者Chen, Yiding
作者单位1.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
推荐引用方式
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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来源：地质与地球物理研究所

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