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Influence of geomagnetic field structure on >= 2 MeV electron distribution at the geostationary orbit
Alternative TitleWOS:000575879600003
Sun XiaoJing1,2; Lin RuiLin2; Liu SiQing1,2; shi LiQin1,2; Zhang XiaoXin3; Zhong QiuZhen1,2; Luo BingXian1,2; Gong JianCun2,4; Cheng YongHong2
Source PublicationCHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
2020
Volume63Issue:10Pages:3604-3625
DOI10.6038/cjg2020O0074
ISSN0001-5733
Language中文
KeywordGeostationary orbit >= 2 MeV electron fluxes Geomagnetic field structure Prediction model of high energy electron GEOSYNCHRONOUS ORBIT QUANTITATIVE PREDICTION SPACECRAFT ANOMALIES RADIATION BELT MAGNETIC-FIELD MODEL FLUX MAGNETOSPHERE FORECAST WEATHER
AbstractBased on AE8 electron radiation belt model and various geomagnetic field models, we analyzed the effects of geomagnetic field models, solar wind, geomagnetic disturbance and the pointing of geomagnetic axis on >= 2 MeV electron distribution at the geostationary orbit, examined the differences of >= 2 MeV electron distribution at different longitudes of the geostationary orbit, and made a comparison between the results from models and the observations from GOES satellites. It is shown that the results of >= 2 MeV electron fluxes at the geostationary orbit from AE8+IGRF+T96 model are better than those from AE8+IGRF+OPQ77 model or AE8 +IGRF +T89 model, most of qualitative results from AE8 + IGRF + T96 model are consistent with observations from GOES satellites, and >= 2 MeV electron fluxes at the geostationary orbit from AE8+IGRF+T96 model have a good negative correlation with magnetic shell parameter Lm and a good positive correlation with local magnetic field B. Based on the AE8+IGRF+T96 model, >= 2 MeV electron fluxes at the geostationary orbit each minute during 2010 are calculated by the assumption of constant solar wind conditions and geomagnetic disturbances. The data reveal that the ratios of the maximal to minimal values of >= 2 MeV electron fluxes at the geostationary orbit each minute vary from 2. 50 to 7. 51 in one year, with a main period of 1 day and the variation of ratios each day more than 3, the ratios of the maximal to minimal values of >= 2 MeV electron fluxes for any geostationary satellite each day are within the range from 2. 98 to 6. 00 in one year, varying with the time and the location, and the maximum and minimum values of >= 2 MeV electron daily fluences for the geostationary satellites at the same day in one year appear near 170 degrees W and 70 degrees W, respectively, with their the ratios varying from 1. 86-2. 13. The variations of >= 2 MeV electron distribution at the geostationary orbit above are mainly due to Lm, and the effect of B/B-o is less than 5%, where B-o is the minimal value of magnetic field at any field line. Therefore, the influence of geomagnetic field structure, especially the Lm parameter, should be considered for developing the model of >= 2 MeV high energy electron flux distribution at the geostationary orbit.
Indexed BySCI
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Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/7563
Collection中国科学院国家空间科学中心
Affiliation1.Chinese Acad Sci, Natl Space Sci Ctr, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Key Lab Sci & Technol Environm Space Situat Aware, Beijing 100190, Peoples R China
4.China Meteorol Adm, Key Lab Space Weather, Natl Ctr Space Weather, Beijing 100081, Peoples R China
5.Chinese Acad Sci, Innovat Acad Microsatellites, Shanghai 200050, Peoples R China
Recommended Citation
GB/T 7714
Sun XiaoJing,Lin RuiLin,Liu SiQing,et al. Influence of geomagnetic field structure on >= 2 MeV electron distribution at the geostationary orbit[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2020,63(10):3604-3625.
APA Sun XiaoJing.,Lin RuiLin.,Liu SiQing.,shi LiQin.,Zhang XiaoXin.,...&Cheng YongHong.(2020).Influence of geomagnetic field structure on >= 2 MeV electron distribution at the geostationary orbit.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,63(10),3604-3625.
MLA Sun XiaoJing,et al."Influence of geomagnetic field structure on >= 2 MeV electron distribution at the geostationary orbit".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 63.10(2020):3604-3625.
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