Ionospheric disturbances following the March 2015 geomagnetic storm from GPS observations in China
When strong solar activities and geomagnetic storms happen, satellite communications and navigation system will be strongly disturbed. It is of great significance to monitor ionospheric disturbances, because empirical models cannot capture ionospheric anomalous disturbances well. Nowadays, dual-freq...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2018-07-01
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| Series: | Geodesy and Geodynamics |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1674984717301088 |
| _version_ | 1818657919790481408 |
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| author | Wenxin Zhang Xin Zhao Shuanggen Jin Junhai Li |
| author_facet | Wenxin Zhang Xin Zhao Shuanggen Jin Junhai Li |
| author_sort | Wenxin Zhang |
| collection | DOAJ |
| description | When strong solar activities and geomagnetic storms happen, satellite communications and navigation system will be strongly disturbed. It is of great significance to monitor ionospheric disturbances, because empirical models cannot capture ionospheric anomalous disturbances well. Nowadays, dual-frequency GPS (Global Positioning System) observations can be used to estimate the ionospheric total electron content, correct the ionospheric delay and analyze the response of the ionosphere to geomagnetic storms. In this paper, the ionospheric response to the geomagnetic storm occurred in March 2015 is investigated using GPS observations provided by Crustal Movement of Observation Network of China. The result shows that this storm increases the electron density in the ionosphere quickly and disrupts the structure of the northern equatorial anomaly region at the beginning. In the main process stage, compared with that in the quite periods, the VTEC (Vertical Total Electron Content) around the longitude of 120°E decreases by 50% and the amount of depletion is larger in the high latitude region than that in the low latitude region. We also find the height of the peak electron density in F2 layer increases during the geomagnetic storm from the electron density profiles derived from GPS occultation mission. Keywords: Ionospheric response, Regional ionospheric grid model, Geomagnetic storm, GPS occultation, Ground-based GPS observation |
| first_indexed | 2024-12-17T03:49:08Z |
| format | Article |
| id | doaj.art-e47bc36e90484bdea346bcac473203a2 |
| institution | Directory Open Access Journal |
| issn | 1674-9847 |
| language | English |
| last_indexed | 2024-12-17T03:49:08Z |
| publishDate | 2018-07-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Geodesy and Geodynamics |
| spelling | doaj.art-e47bc36e90484bdea346bcac473203a22022-12-21T22:04:49ZengKeAi Communications Co., Ltd.Geodesy and Geodynamics1674-98472018-07-0194288295Ionospheric disturbances following the March 2015 geomagnetic storm from GPS observations in ChinaWenxin Zhang0Xin Zhao1Shuanggen Jin2Junhai Li3Environment and Chemical Engineering College, Shanghai University, Shanghai, 200444, China; Shanghai Astronomical Observatory, Chinese Academy of Science, Shanghai, 200030, ChinaEnvironment and Chemical Engineering College, Shanghai University, Shanghai, 200444, China; Shanghai Astronomical Observatory, Chinese Academy of Science, Shanghai, 200030, ChinaShanghai Astronomical Observatory, Chinese Academy of Science, Shanghai, 200030, ChinaShanghai Astronomical Observatory, Chinese Academy of Science, Shanghai, 200030, China; Tianjin Richsoft Electric Power Information Technology Co., Ltd, State Grid, Tianjin, 300384, China; Corresponding author. Shanghai Astronomical Observatory, Chinese Academy of Science, Shanghai, 200030, China.When strong solar activities and geomagnetic storms happen, satellite communications and navigation system will be strongly disturbed. It is of great significance to monitor ionospheric disturbances, because empirical models cannot capture ionospheric anomalous disturbances well. Nowadays, dual-frequency GPS (Global Positioning System) observations can be used to estimate the ionospheric total electron content, correct the ionospheric delay and analyze the response of the ionosphere to geomagnetic storms. In this paper, the ionospheric response to the geomagnetic storm occurred in March 2015 is investigated using GPS observations provided by Crustal Movement of Observation Network of China. The result shows that this storm increases the electron density in the ionosphere quickly and disrupts the structure of the northern equatorial anomaly region at the beginning. In the main process stage, compared with that in the quite periods, the VTEC (Vertical Total Electron Content) around the longitude of 120°E decreases by 50% and the amount of depletion is larger in the high latitude region than that in the low latitude region. We also find the height of the peak electron density in F2 layer increases during the geomagnetic storm from the electron density profiles derived from GPS occultation mission. Keywords: Ionospheric response, Regional ionospheric grid model, Geomagnetic storm, GPS occultation, Ground-based GPS observationhttp://www.sciencedirect.com/science/article/pii/S1674984717301088 |
| spellingShingle | Wenxin Zhang Xin Zhao Shuanggen Jin Junhai Li Ionospheric disturbances following the March 2015 geomagnetic storm from GPS observations in China Geodesy and Geodynamics |
| title | Ionospheric disturbances following the March 2015 geomagnetic storm from GPS observations in China |
| title_full | Ionospheric disturbances following the March 2015 geomagnetic storm from GPS observations in China |
| title_fullStr | Ionospheric disturbances following the March 2015 geomagnetic storm from GPS observations in China |
| title_full_unstemmed | Ionospheric disturbances following the March 2015 geomagnetic storm from GPS observations in China |
| title_short | Ionospheric disturbances following the March 2015 geomagnetic storm from GPS observations in China |
| title_sort | ionospheric disturbances following the march 2015 geomagnetic storm from gps observations in china |
| url | http://www.sciencedirect.com/science/article/pii/S1674984717301088 |
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