2000/07/10 by É. L. Afraimovich, E. L. Afraimovich, Afraimovich, E. L. +4
Earth and Planetary Sciences · Physics and Astronomy · #Atmospheric Ozone and Climate #FOS: Physical sciences #Geophysics (physics.geo-ph) #Ionosphere and magnetosphere dynamics #Solar and Space Plasma Dynamics #physics.geo-ph
paper · pdf · doi:10.48550/arxiv.physics/0007024
EmTeX-386, 12 pages, 6 figures, article: paperTSE.tex, figures:fig1TSE.PS.Z; fig2TSE.PS.Z; fig3TSE.PS.Z; fig4TSE.PS.Z; fig5TSE.PS.Z; fig6TSE.PS.Z, tables: tabTSE1.PS.Z; tabTSE1.PS.Z
arxiv created 2000/07/10 · openalex publication_date 2000/07/10 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We present the results derived from measuring fundamental parameters of the ionospheric response to the August 11, 1999 total solar eclipse. Our study is based on using the data from about 70 GPS stations located in the neighbourhood of the eclipse totality phase in Europe. The eclipse period was characterized by a low level of geomagnetic disturbance (Dst - variation from -10 to -20 nT), which alleviated significantly the problem of detecting the ionospheric response to the eclipse. Our analysis revealed a well-defined effect of a decrease (depression) of the total electron content (TEC) for all GPS stations. The delay between minimum TEC values with respect to the totality phase near the eclipse path increased gradually from 4 min in Greenwich longitude (10:40 UT, LT) to 8 min at the longitude 16 degrees (12:09 LT). The depth and duration of the TEC depression were found to be 0.2-0.3 TECU and 60 min, respectively. The results obtained in this study are in good agreement with earlier measurements and theoretical estimates.