Ionospheric response to the total solar eclipse of June 21, 2001

Details Ionospheric response to the total solar eclipse of June 21, 2001 Ionospheric response to the total solar eclipse of June 21, 2001

2002-01-24

arxiv.org/abs/physics/0201047v1

Physics

Geophysics

LaTeX2.09, 20 pages, 4 figures, 2 tables, agums.sty (the style file)

Scientific paper

We discuss the measurements of the main parameters of the ionospheric response to the total solar eclipse of June 21, 2001. This study is based on using the data from three stations of the global GPS network located in the area of the totality band in Africa. This period was characterized by a low level of geomagnetic disturbance (the Dst-index varied from -6 to 22 nT), which alleviated greatly the problem of detecting the ionospheric response to eclipse. An analysis revealed a clearly pronounced effect of a decrease (depression) of the total electron content (TEC) for all GPS stations. The delay between the smallest value of the TEC with respect to eclipse totality was 9-37 min. The depth and duration of the TEC depression were 0.5-0.9 TECU and 30-67 min, respectively. The results obtained in this study are in good agreement with earlier measurements and theoretical estimations.

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