基于COSMIC数据电离层电子密度空间分布变化

马新欣; 林湛; 陈化然; 金红林; 刘晓灿; 焦立果

doi:10.3799/dqkx.2017.038

Volume 42 Issue 3

Mar. 2017

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Ma Xinxin, Lin Zhan, Chen Huaran, Jin Honglin, Liu Xiaocan, Jiao Liguo, 2017. Spatial Distribution Variations of Ionospheric Electron Density Based on COSMIC Data. Earth Science, 42(3): 479-484. doi: 10.3799/dqkx.2017.038

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Ma Xinxin, Lin Zhan, Chen Huaran, Jin Honglin, Liu Xiaocan, Jiao Liguo, 2017. Spatial Distribution Variations of Ionospheric Electron Density Based on COSMIC Data. Earth Science, 42(3): 479-484. doi: 10.3799/dqkx.2017.038

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Spatial Distribution Variations of Ionospheric Electron Density Based on COSMIC Data

doi: 10.3799/dqkx.2017.038

1.
Institute of Geophysics, China Earthquake Administration, Beijing 100081, China
2.
Institute of Earthquake Science, China Earthquake Administration, Beijing 100036, China

Received Date: 2016-07-02
Publish Date: 2017-03-15

Abstract

Abstract

Space-based GPS detection can provide the global distribution, high accuracy, high vertical resolution of the ionosphere observation data, compensate for the problem of regional restriction and low vertical resolution in ground-based GPS detection. To enrich the relevant research, this study analyses the spatial distribution variation of electron density based on COSMIC occultation data from 2008—2011 by statistical method. Results show that electron density is dominated by the EIA and WSA. With the solar activity enhancement, EIA extends into the middle latitudes from 250 km to 350 km height range, and WSA occurs not only in summer of the southern hemisphere, but also in spring and autumn there while electron density values during night time are greater than those during daytime from 300 km to 500 km height range; The electron density has obvious WSA phenomenon from 250 km to 500 km height range. And with the solar activity enhancement, the geographic range of abnormal regional expands.
- geophysics,
- ionosphere,
- electron density,
- EAI,
- WSA

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References

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Spatial Distribution Variations of Ionospheric Electron Density Based on COSMIC Data

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