Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010acasn..51..278z&link_type=abstract
Acta Astronomica Sinica, vol. 51, no. 3, p.278-284
Astronomy and Astrophysics
Astronomy
Eclipses, Earth: Atmosphere, Methods: Data Analysis
Scientific paper
Using the sudden ionospheric disturbance (SID) monitor provided by Stanford University, the very low frequency (VLF) signals were observed in Nanjing during the total solar eclipse on Jul. 22nd 2009. It is found that the intensity of the VLF signals evidently increased during the total solar eclipse, similar to the effect of sunrise and sunset. The intensity of the VLF signals strongly fluctuated, similar to the phenomena of thunderbolt. Moreover, this intensity increased during both periods before and after the total eclipse. Based on the discussions of the reliability of the observational data and the comparison with the previous observations, the possible explanation for the variation of ionosphere before the total solar eclipse is proposed.
Du Ruo-Yin
Gu Sheng-Min
Wang Nun-Yii
Wu Tianyu
Zhang Xiao-Fei
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