中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Equatorial electrojet observed by low inclination orbit satellites: multiple cases study

文献类型:期刊论文

作者Tian, Lin2,3; Luo, Hao2,3; Du, Aimin2,3; Ge, Yasong2,3; Zhang, Ying2,3; Zhu, Ye2,3; Sun, Shuquan2,3; Zhao, Lin2,3; Li, Songyan2,3; Yang, Jiefeng1
刊名ASTROPHYSICS AND SPACE SCIENCE
出版日期2022-08-01
卷号367期号:8页码:13
关键词Equatorial electrojet Low inclination orbit satellite Ionospheric current system Solar quiet daily variation
ISSN号0004-640X
DOI10.1007/s10509-022-04098-7
英文摘要Recent studies based on magnetic field measurements from low altitude orbit satellites (e.g., CHAMP, Swarm) have improved the understanding of the equatorial electrojet (EEJ). With the successful launch of the Low Orbit Pearl Satellite series (LOPS) (Zhu et al. in Geosci. Instrum. Method. Data Syst. Discuss. 2021:1-27, 2021), we could study the characteristics of EEJ with low inclination satellites. The main field, crustal field, and the magnetospheric field, calculated from the CHAOS-7 model (Finlay et al. in Earth Planets Space 72(1):156, 2020), are subtracted from the original data. The solar quiet daily variation signals are removed by subtracting the spherical harmonic polynomial fitting. We studied four cases where the peak of inverted EEJ current density locates 1 to several degrees northward from the dip equator. The deviation of the peak from the dip equator might depend on longitude or season. Another case including three crossings from one constellation is studied together to reduce noise. Multiple cases study shows that the peak north component of the magnetic field generated by the EEJ is about 24 nT at 600 km altitude. The EEJ current density is inverted by assuming multiple parallel eastward line currents. The current density peaks at 0.12 A/m with a half-width of 5 degrees. It is also found that the EEJ is asymmetric to the dip equator where the peak of the EEJ current density is about 1.5 degrees north of the dip equator. More simultaneous observations from LOPS will be used to investigate the small-scale structure of EEJ in future studies.
WOS关键词SQ ; INDUCTION ; CURRENTS ; MISSION ; REGION ; CHAMP ; EEJ
资助项目Strategic Priority Research Program of Chinese Academy of Sciences[XDB41010304] ; Beijing Municipal Science and Technology Commission[Z191100004319001] ; pre-research Project on Civil Aerospace Technologies - CNSA[D020103] ; National Natural Science Foundation of China[41874080] ; National Natural Science Foundation of China[41674168] ; National Natural Science Foundation of China[41874197]
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:000835698300001
出版者SPRINGER
资助机构Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Beijing Municipal Science and Technology Commission ; Beijing Municipal Science and Technology Commission ; Beijing Municipal Science and Technology Commission ; Beijing Municipal Science and Technology Commission ; pre-research Project on Civil Aerospace Technologies - CNSA ; pre-research Project on Civil Aerospace Technologies - CNSA ; pre-research Project on Civil Aerospace Technologies - CNSA ; pre-research Project on Civil Aerospace Technologies - CNSA ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Beijing Municipal Science and Technology Commission ; Beijing Municipal Science and Technology Commission ; Beijing Municipal Science and Technology Commission ; Beijing Municipal Science and Technology Commission ; pre-research Project on Civil Aerospace Technologies - CNSA ; pre-research Project on Civil Aerospace Technologies - CNSA ; pre-research Project on Civil Aerospace Technologies - CNSA ; pre-research Project on Civil Aerospace Technologies - CNSA ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Beijing Municipal Science and Technology Commission ; Beijing Municipal Science and Technology Commission ; Beijing Municipal Science and Technology Commission ; Beijing Municipal Science and Technology Commission ; pre-research Project on Civil Aerospace Technologies - CNSA ; pre-research Project on Civil Aerospace Technologies - CNSA ; pre-research Project on Civil Aerospace Technologies - CNSA ; pre-research Project on Civil Aerospace Technologies - CNSA ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Beijing Municipal Science and Technology Commission ; Beijing Municipal Science and Technology Commission ; Beijing Municipal Science and Technology Commission ; Beijing Municipal Science and Technology Commission ; pre-research Project on Civil Aerospace Technologies - CNSA ; pre-research Project on Civil Aerospace Technologies - CNSA ; pre-research Project on Civil Aerospace Technologies - CNSA ; pre-research Project on Civil Aerospace Technologies - CNSA ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
源URL[http://ir.iggcas.ac.cn/handle/132A11/108447]  
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Luo, Hao
作者单位1.Chinese Acad Sci, Shanghai Engn Ctr Microsatellites, Shanghai, Peoples R China
2.Univ Chinese Acad Sci, Coll Earth Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing 100029, Peoples R China
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GB/T 7714
Tian, Lin,Luo, Hao,Du, Aimin,et al. Equatorial electrojet observed by low inclination orbit satellites: multiple cases study[J]. ASTROPHYSICS AND SPACE SCIENCE,2022,367(8):13.
APA Tian, Lin.,Luo, Hao.,Du, Aimin.,Ge, Yasong.,Zhang, Ying.,...&Yang, Jiefeng.(2022).Equatorial electrojet observed by low inclination orbit satellites: multiple cases study.ASTROPHYSICS AND SPACE SCIENCE,367(8),13.
MLA Tian, Lin,et al."Equatorial electrojet observed by low inclination orbit satellites: multiple cases study".ASTROPHYSICS AND SPACE SCIENCE 367.8(2022):13.

入库方式: OAI收割

来源:地质与地球物理研究所

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