Ionospheric solar flare effects monitored by the ground-based GPS receivers: Theory and observation

J. Y. Liu, C. H. Lin, H. F. Tsai, Y. A. Liou

研究成果: 雜誌貢獻期刊論文同行評審

81 引文 斯高帕斯(Scopus)

摘要

The ionosphere responses to a solar flare observed by using ground-based receivers of the global positioning system (GPS) are investigated in this paper. Two quantities, the total electron content (TEC) and its time rate of change (rTEC), can be derived from the receivers. The theoretical studies show that the rTEC is related to the frequency deviation of the GPS signals. Meanwhile, worldwide ground-based GPS receivers are employed to derive the TEC and associated rTEC to monitor the ionospheric solar flare effect on 14 July (Bastille Day) 2000. It is found that ionospheric solar flare effects can be observed from predawn to postdusk regions, and the most pronounced signatures appear in the midday area. The agreement between theoretical predications and observations demonstrates that the TEC is suitable to monitor the overall variations of flare radiations while the rTEC is capable to detect sudden changes in the flare radiations.

原文???core.languages.en_GB???
文章編號A01307
期刊Journal of Geophysical Research: Space Physics
109
發行號A1
DOIs
出版狀態已出版 - 1月 2004

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