空间科学学报2011，Vol.31Issue(2)：187-193,7.
2009年7月22日日全食期间电离层参量的变化
Variations of Ionospheric Parameters During the Total Solar Eclipse on 22 July 2009
摘要
Abstract
The variations of ionospheric parameters including fmin, f0E2 and TEC during the total solar eclipse of 22 July 2009 are investigated. The results show that the fmin drops quickly after the eclipse commencement and then gradually restores to the normal value. The f0F2 and TEC decrease greatly during the eclipse maximum. These phenomena are probably caused by the fact that the solar electromagnetic radiation decrease sharply during the solar eclipse. The f0F2 and TEC show some positive disturbance which is more notable near to the equatorial abnormal crest region on about 5～6 hours and some negative disturbance on about 9～10 hours after this eclipse. Combining the analysis of the solar and geomagnetic activity, we think that it seems difficult to further investigate the eclipse ionospheric effect since the space weather events including magnetic storm and electric field penetration are accompanying this event.关键词
日全食/电离层/fmin(反射回波最低频率)/f0F2/TECKey words
Total solar eclipse/ Minimal frequency of reflected echo/ Critical frequency of F2 layer/TEC分类
天文与地球科学引用本文复制引用
丁宗华,孙树计,陈春,李娜,许正文..2009年7月22日日全食期间电离层参量的变化[J].空间科学学报,2011,31(2):187-193,7.基金项目
国家自然科学基金项目(40904040)和空间天气学国家重点实验室2009年开放基金项目(08262DAA4S)共同资助 （40904040）
