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．
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.
出处
《空间科学学报》
CAS
CSCD
北大核心
1996年第2期103-108,共6页
Chinese Journal of Space Science
基金
国家自然科学基金
高等学校博士学科点专项基金
关键词
磁暴
甚低纬哨声
扰动电场
场列电离增强
Magnetic storm, Very low-latitude whistler, Disturbed electric field,Field-aligned ionization enhancement
