1. The Feature of Ionospheric Mid-Latitude Trough during Geomagnetic Storms Derived from GPS Total Electron Content (TEC) Data.
- Author
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Yang, Na, Yu, Tao, Le, Huijun, Liu, Libo, Sun, Yang-Yi, Yan, Xiangxiang, Wang, Jin, Xia, Chunliang, Zuo, Xiaomin, and Huang, Guangliang
- Subjects
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MAGNETIC storms , *ELECTRONS , *LATITUDE - Abstract
This study aims to investigate the features of the ionospheric mid-latitude trough over North America by using the MIT total electron content data obtained during three geomagnetic storms that occurred in August 2018, September 2017, and March 2015. The mid-latitude trough position sharply moves equatorward from the quiet-time subauroral latitude to mid-latitude with the decrease in SYM-H during geomagnetic storms. We find that the ionospheric behavior of TEC around the mid-latitude trough position displays three kinds of ionospheric storm effect: negative ionospheric storm effect, unchanged ionospheric behavior, and positive ionospheric storm effect. These ionospheric storm effects around the mid-latitude trough position are not always produced by the mid-latitude trough. The ionospheric storm effects produced by the mid-latitude trough are limited in the narrow mid-latitude trough regions, and are transmitted to other regions with the movement of the mid-latitude trough. [ABSTRACT FROM AUTHOR]
- Published
- 2022
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