Analysis of the global ionospheric disturbances of the March 2015 great storm

Yibin Yao; Lei Liu; Jian Kong; Changzhi Zhai

doi:10.1002/2016ja023352

journal article Dec 01, 2016

Analysis of the global ionospheric disturbances of the March 2015 great storm

Yibin Yao

Lei Liu

Jian Kong

Changzhi Zhai

Journal of Geophysical Research: Space Physics Vol. 121 No. 12 · Wiley

View at Publisher Save 10.1002/2016ja023352

Abstract

AbstractThe global ionospheric storm in March 2015 was investigated by using data from over 3000 GPS stations worldwide. In this study, total electron content (TEC), rate of TEC (ROT), and ROT's standard deviation rate of the TEC index, as well as the second‐order difference operator TECT, were considered as main characteristic methods to distinguish ionosphereic disturbances. The results show that (1) based on the multiple methods above, we all observed that for the first time, there were three equatorward traveling ionospheric disturbances (TIDs) in the main phase of this storm. In North America, the disturbance zone expanded to ~40°N; the disturbance periods and AE peak stages were roughly synchronous. We suggest that these three TIDs were induced by the propagation of atmospheric gravity waves to low latitudes under the action of AE. (2) The most intense positive storm occurred over South America and the South Atlantic (over 300% enhancement; 00:00–05:00 UT on 18 March), whereas a negative storm was observed in the corresponding region of the Northern Hemisphere. Such inverse hemispheric asymmetry in intensity and structure can be explained by the variations of the thermospheric composition, the IMF By component, and the geomagnetic intensity. (3) On 18 March, a negative storm dominated globally (except at certain low latitudes), and tended to propagate equatorward and decay with time, which could be largely attributed to the storm circulation theory. And the evolution of the negative storm was further characterized by the foF2 variations of ionosondes.

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48

Citations

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References

Details

Published: Dec 01, 2016
Vol/Issue: 121(12)
License: View

Authors

Y

Yibin Yao

School of Geodesy and Geomatics Wuhan University Wuhan China; Key Laboratory of Geospace Environment and Geodesy, Ministry of Education Wuhan University Wuhan China; Collaborative Innovation Center for Geospatial Technology Wuhan China

L

Lei Liu

School of Geodesy and Geomatics Wuhan University Wuhan China

J

Jian Kong

Chinese Antarctic Center of Surveying and Mapping Wuhan University Wuhan China

C

Changzhi Zhai

School of Geodesy and Geomatics Wuhan University Wuhan China

Funding

National Natural Science Foundation of China Award: 41274022

Cite This Article

Yibin Yao, Lei Liu, Jian Kong, et al. (2016). Analysis of the global ionospheric disturbances of the March 2015 great storm. Journal of Geophysical Research: Space Physics, 121(12). https://doi.org/10.1002/2016ja023352

Analysis of the global ionospheric disturbances of the March 2015 great storm

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