2009年7月22日日全食-电离层响应分析  

Ionospheric Effects Analysis Associated with a Total Solar Eclipse on July 22,2009

作　　者：赵莹[1] 张小红[2] 安家春[3] 

机构地区：[1]中国地震局地震研究所地震大地测量重点实验室,湖北武汉430071 [2]武汉大学测绘学院,湖北武汉430079 [3]武汉大学中国南极测绘研究中心,湖北武汉430079

出　　处：《武汉大学学报（信息科学版）》2014年第1期70-74,共5页Geomatics and Information Science of Wuhan University

基　　金：国家自然科学基金资助项目(41204028);创新研究群体科学基金资助项目(40721001);国家973计划资助项目(2006CB701301);中央高校基本科研业务费专项资金资助项目(121001)~~

摘　　要：选取2009年7月22日发生的日全食前后的电离层垂测仪数据来分析日全食期间的电离层响应,并尝试通过掩星电离层反演方法探测本次日全食引起的电离层效应。结果显示,利用垂测仪和COSMIC掩星反演均能够探测到日全食期间受日食影响的电离层的显著变化,但利用COSMIC掩星反演提取的电离层效应所具有的时间分辨率还有待提高。When a total solar eclipse occurs, various radiation sources from the sun will be covered gradually by the moon, thus resulting in all kinds of geophysics phenomenon. Therefore, to carry out observation and investigation on the geophysical effects related to total solar eclipse is of certain practical significance and scientific value. Based on the Ionosonde data before and after a total solar eclipse on July 22, 2009, this article analyzes the ionospheric response during this period, and attempts to ex- plore the ionospheric effect caused by total solar eclipse by the inversion of ionospheric GNSS occultation. Results demonstrate that the remarkable change of the ionosphere caused by total solar eclipse can be detected by both plumb meter and COSMIC occultation inversion methods, although the temporal resolution of the ionospheric effect extracted by COSMIC occultation inversion needs further improvement.

关 键 词：日全食 电离层 掩星 F2层临界频率 

分 类 号：P228.42[天文地球—大地测量学与测量工程]