期刊
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
卷 119, 期 3, 页码 2298-2317出版社
AMER GEOPHYSICAL UNION
DOI: 10.1002/2013JA019575
关键词
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资金
- National Natural Science Foundation of China [41325017, 41274157, 41229001, 41174139, 41104107, 41121003, 41025016]
- Project of Chinese Academy of Sciences [KZZD-EW-01]
- Strategic Priority Research Program on Space Science of the Chinese Academy of Sciences [XDA04060201]
- Thousand Young Talents Program of China
- National Science Foundation
The total electron content (TEC) data measured by the Jason, CHAMP, GRACE, and SAC-C satellites, the in situ electron densities from CHAMP and GRACE, and the vertical E x B drifts from the ROCSAT, have been utilized to examine the ionospheric response to the October 2003 superstorms. The combination of observations from multiple satellites provides a unique global view of ionospheric storm effects, especially over the Pacific Ocean and American regions, which were under sunlit conditions during the main phases of the October 2003 superstorms. The main results of this study are as follows: (1) There were substantial increases in TEC in the daytime at low and middle latitudes during both superstorms. (2) The enhancements were greater during the 30 October superstorm and occurred over a wider range of local times. (3) They also tended to peak at earlier local times during this second event. (4) These TEC enhancement events occurred at the local times when there were enhancements in the upward vertical drift. (5) The strong upward vertical drifts are attributed to penetration electric fields, suggesting that these penetration electric fields played a significant role in the electron density enhancements during these superstorms. Overall, the main contribution of this study is the simultaneous view of the storm time ionospheric response from multiple satellites, and the association of local time differences in ionospheric plasma response with measured vertical drift variations.
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