日食舆電離層的關係

由於地磁的日變化,有人推想大氣高層有導電空氣層之存在。1895年波波夫教授發明無線電以後,1901年無線電信號越過大西洋成功,指出此導電層存在之想法並非虛構,我們稱這導電空氣層為電離層。經過很多人的研究,其中我國學者有不少的貢獻,現在電離層的秘密漸漸的揭開了。電離層的研究有各種不同的

ON THE RELATIONS BETWEEN SOLAR ECLIPSE AND IONOSPHERIC LAYERS

During a solar eclipse, the ionic density in the E-layer decreases by 20-70％, that in the F_1-layer, by 30-80％ and that in the F_2-layer, by 10-60％. The true height of each layeris lowered, but the lowest apparent height is raised. This is due to the decrease of the thicknesses of the layers. Calculations based on data obtained from different eclipses show that the resultant coefficient is of the order of 10~(-8) for the E-layer, 10~(-9) for the F_1-and 10~(-10) for the F_2-layers. From the analysis, the ionization energy of the air molecules in the ionos others is mainly derived from the ultra-violet radiations from the sun and these are more intense in the corona and the prominence. The sporatic E and other layers occurring during solar eclipse are also discussed.