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Monitoring the global evolution of the storm ring current and storm indices from confined ground geomagnetic observatories
Zeng, G.1; Shen, C.1; Rong, Z.J.2,3; Li, X.4; Chen, T.5; Chen, Z.Q.5; Ma, Y.H.1,6
Department空间科学部
Source PublicationJournal of Atmospheric and Solar-Terrestrial Physics
2019
Volume191
DOI10.1016/j.jastp.2019.05.013
ISSN1364-6826
Language英语
AbstractFor the first time, the global structure of the geomagnetic disturbance field around the Earth as well as the magnetic storm indices have been deduced from magnetic field measurements by ground observatories in a confined range of longitude. The spatial gradient of the H component of the geomagnetic disturbance field was obtained from ground geomagnetic observatories only in the Eastern Hemisphere, provided the geomagnetic disturbance field varies approximately linearly in space. Furthermore, the storm symmetric and asymmetric indices were derived and the spatial distribution and temporal evolution of the storm ring current was investigated. It was found that the storm indices derived from observatories in the Eastern Hemisphere are consistent with the officially published Kyoto standard indices which are derived from six globally distributed observatories. We also calculated the storm indices for 1941–1956 by using data from three observatories (HER, KAK and SJG). The correlation coefficient between the symmetric index deduced from three observatories and the one from the global six observatories is 0.98, and the correlation coefficient between the two kind of asymmetric indices is 0.79. Those results suggest that our approach is reasonable and significant when global ground observatories are not readily available. © 2019 Elsevier Ltd
Indexed BySCI ; EI
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Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/7067
Collection空间科学部
Affiliation1.School of Science, Harbin Institute of Technology, Shenzhen; 518055, China;
2.Key Laboratory of Earth and Planetary Physics, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing; 100029, China;
3.Beijing National Observatory of Space Environment, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing; 100029, China;
4.Laboratory for Atmosphere and Space Physics, University of Colorado, Boulder, United States;
5.State Key Laboratory of Space Weather, National Space Science Center, Chinese Academy of Sciences, Beijing; 100190, China;
6.Key Laboratory of Lunar and Deep Space Exploration, Chinese Academy of Sciences, Beijing, China
Recommended Citation
GB/T 7714
Zeng, G.,Shen, C.,Rong, Z.J.,et al. Monitoring the global evolution of the storm ring current and storm indices from confined ground geomagnetic observatories[J]. Journal of Atmospheric and Solar-Terrestrial Physics,2019,191.
APA Zeng, G..,Shen, C..,Rong, Z.J..,Li, X..,Chen, T..,...&Ma, Y.H..(2019).Monitoring the global evolution of the storm ring current and storm indices from confined ground geomagnetic observatories.Journal of Atmospheric and Solar-Terrestrial Physics,191.
MLA Zeng, G.,et al."Monitoring the global evolution of the storm ring current and storm indices from confined ground geomagnetic observatories".Journal of Atmospheric and Solar-Terrestrial Physics 191(2019).
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