| 磁暴期间甚低纬哨声的导管传播 |
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| 引用本文： | 涂剑南,刘章庆.磁暴期间甚低纬哨声的导管传播[J].空间科学学报,1996,16(2):103-108. |
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| 作者姓名： | 涂剑南 刘章庆 |
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| 作者单位： | 武汉大学空间物理系，浙江大学信息与电子工程系，华南师范大学物理系 |
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| 基金项目： | 国家自然科学基金,高等学校博士学科点专项基金 |
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| 摘 要： | 对磁暴期间甚低纬哨声导管传播的机理进行了初步的讨论，根据暴时低纬哨声的特点，认为暴时出现的扩展哨、多跳回波是沿东向扰动电场导致的场列电离增强路径传播的。对在东向电场影响下低纬Ｆ层的数值模拟表明，东向电场导致的场列电离增强结构有利于哨声的捕获和传播。
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| 关 键 词： | 磁暴 甚低纬哨声 扰动电场 场列电离增强 |
DUCT PROPAGATION OF VERY LOW-LATITUDE WHISTLERS |
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| Tu Jian-nan.DUCT PROPAGATION OF VERY LOW-LATITUDE WHISTLERS[J].Chinese Journal of Space Science,1996,16(2):103-108. |
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| Authors: | Tu Jian-nan |
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| Abstract: | The propagation mechanism of very-low latitude whistlers is discussed. On the basis of characteristics of low-latitude whistlers, the diffusive and multi-hop whistlers during magnetic storms are thought to propagate along the paths of field-aligned ionization enhancements resultal from a disturbed eastward electric field. The simulation of low-latitude F region in the presence of a eastward electric field shows that the field-aligned ionization enhancements is a favourable condition for trapping and propagation of whistlers. |
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| Keywords: | Magnetic storm Very low-latitude whistler Disturbed electric field Field-aligned ionization enhancement |
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