| 1997-03-09日全食的甚低频观测与分析 |
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| 引用本文： | 牛有田,陈建峰,郝好贞,王海波,张中远.1997-03-09日全食的甚低频观测与分析[J].河南师范大学学报(自然科学版),2009,37(2). |
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| 作者姓名： | 牛有田 陈建峰 郝好贞 王海波 张中远 |
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| 作者单位： | 河南师范大学,物理与信息工程学院,河南,新乡,453007 |
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| 摘 要： | 在1997-03-09发生日全食期间,在河南省新乡市对Alpha甚低频(VLF)信号的观测试验发现,日全食对VLF信号传播特性有很大的影响,明显引起VLF相位滞后.讨论了日全食对VLF信号传播影响的机理,并用"波导模"理论对这种影响进行了理论计算.计算结果表明:VLF传播路径穿越日全食主食带的情况下,VLF相速比正常情况减小的最大值约为0.101%~0.118%;VLF传播路径穿越80%日偏食带的情况下,该值约为0.064%~0.082%.
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| 关 键 词： | 日全食 甚低频 等效反射高度 相速 |
Observation and Analysis of Total Solar Eclipse of 1997 March 9 Using VLF Signal |
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| NIU You-tian,CHEN Jian-feng,HAO Hao-zhen,WANG Hai-bo,ZHANG Zhong-yuan.Observation and Analysis of Total Solar Eclipse of 1997 March 9 Using VLF Signal[J].Journal of Henan Normal University(Natural Science),2009,37(2). |
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| Authors: | NIU You-tian CHEN Jian-feng HAO Hao-zhen WANG Hai-bo ZHANG Zhong-yuan |
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| Institution: | College of Physics and Information Engineering;Henan Normal University;Xinxiang 453007;China |
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| Abstract: | The observation on Alpha VLF signal at 1997 March 9 in Xinxiang city Henan province has found that the influence of total solar eclipse on the VLF propagation characteristic is great.The total solar eclipse has brought the VLF phase to delay obviously.The mechanism of the influence of total solar eclipse on the propagation of VLF signal is discussed.The calculations using waveguide mode theory show: when the VLF propagation path goes through the main total solar eclipse path,the maximum decrease value of th... |
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| Keywords: | total solar eclipse VLF effective reflection height phase velocity |
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