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利用一个二维低纬电离层理论模式模拟1995年10月24日日全食条件下东亚低纬电离层演变,探索低纬日食期间电离层效应.模式计算结果显示:日食期间日食区电离层电子与离子光致电离产生率减少使得E-F1区电离层光食效应显著,而较高部份电离层对日食影响的响应延迟.此次日食过程中EUV辐射通量和垂直漂移变化对低纬F区电离层电子浓度影响明显,而电子温度下降对低纬f0F2影响甚微.
A two-dimensional low-latitude ionosphere theory model was used to simulate the evolution of ionosphere at low latitudes in East Asia under the total solar eclipse on October 24, 1995 to explore the ionospheric effects during low-latitude solar eclipses. The results of model calculation show that the eclipse ionospheric eclipse and ion ionization rate in ecliptic solar eclipse period make the ionospheric eclipse effect in E-F1 region significantly, while the response of the upper ionosphere to solar eclipse delay. The changes of EUV radiation flux and vertical drift during the solar eclipse have a significant effect on the ionospheric electron concentration in the low latitude F region, while the electron temperature drop has little effect on the low-latitude f0F2.