Observations of the Ionospheric Total Electron Contents During the Solar Eclipse of October 24,1995 by Using the GPS Beacon


The ionospheric total electron contents (TEC) during the total eclipse of October 24, 1995 were observed by means of the Global Positioning System (GPS) receivers located at Wuchang and Guangzhou. The observations showed that there were obvious effects of the eclipse on the ionosphere. The eclipse gave rise to decreases in the TEC in comparison with an established TEC reference level, referred to as the negative deviations of the TEC. The deeper the obscuration degree was, the larger was the negative deviation. Furthermore, the restoration of the negative deviations was delayed by about 2 hours after the last contact of the eclipse. 

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