| 哨声谱与出口点的关系 |
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| 引用本文： | 周怀北,肖佐.哨声谱与出口点的关系[J].地球物理学报,1990,33(3):367-371. |
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| 作者姓名： | 周怀北 肖佐 |
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| 作者单位： | 1. 中国科学院空间科学与应用研究中心, 北京;
2. 北京大学地球物理系, 北京 |
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| 摘 要： | 一、引言 哨声波是一种在空间等离子体中传播的色散电磁波,一般以自然界中的闪电作为激励源。利用地面哨声资料可推算出赤道面内哨声路径顶点处的电子浓度N_(eq)和管电子含量N_T等电离层参数。要准确提取这些信息就需知道哨声传播的路径参数,即入口点和出口点位置。由于部分哨声透出电离层后,在地一电离层波导中传播了相当长的距离才被
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| 关 键 词： | 哨声谱 出口点 频谱图 大气波导 |
| 收稿时间： | 1988-10-24 |
THE DETERMINATION OF WHISTLER EXIT POINTS FROM SPECTRUM ANALYSIS |
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| ZHOU HUAI-BEI SUN CHUAN-LI.THE DETERMINATION OF WHISTLER EXIT POINTS FROM SPECTRUM ANALYSIS[J].Chinese Journal of Geophysics,1990,33(3):367-371. |
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| Authors: | ZHOU HUAI-BEI SUN CHUAN-LI |
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| Institution: | 1. Center for Space Sci & Applied Res., Academia Sinico, Beijing;
2. Geophysics department, Peking University, Beijing |
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| Abstract: | In the propagation of VLF pulses in earth-ionosphere waveguide, the spectrums of pulses vary and frequency components of 2-4 kHz are absorbed seriously. According to the principle that the VLF pulse spectrums change with propagation distance, a new method is proposed to determine if whistler waves undergo waveguide propagation before they are picked up. By analysing whistler spectrum of the South Pole, we can determine whistler exit points from this method. The results are in good agreement with that of other experimental method. |
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| Keywords: | Whistler Exit point Spectrum analysis Waveguide propagation |
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