...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Geophysical Research Letters >A generation mechanism for topside enhanced incoherent backscatter during high frequency modification experiments in Tromso
【24h】

A generation mechanism for topside enhanced incoherent backscatter during high frequency modification experiments in Tromso

机译：Tromso高频修改实验中顶部增强的非相干反向散射的生成机制

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Enhanced plasma and ion oscillations on the topside of the ionosphere have been observed during high frequency (HF) ionospheric modification experiments at Tromso. The topside enhancements occurred when the critical frequency of the F layer was below that of the Z mode reflection. Thus, one can consider Z mode waves as a plausible candidate to produce the enhancements. However, the topside echoes were observed over an angular range of many degrees, apparently not compatible with the prediction of the standard theory of a very narrow coupling window located at the Spitze angle. We propose resonant scatter of the HF pump wave into Z mode waves on small-scale field-aligned irregularities to be the cause of the broadening. The irregularities are generated by the HF wave, likely via the resonant instability. [References: 21]
机译：在Tromso进行的高频（HF）电离层修饰实验期间，已观察到电离层顶面上增强的等离子体和离子振荡。当F层的临界频率低于Z模式反射的临界频率时，发生了顶部增强。因此，可以将Z模式波视为产生增强效果的合理候选者。但是，在许多角度范围内观察到了顶部回波，这显然与位于Spitze角的非常窄的耦合窗口的标准理论的预测不兼容。我们建议在小范围的场对准不规则处将HF泵浦波谐振成Z模波的共振散射，将其扩大。 HF波可能会产生共振不稳定性，从而产生不规则现象。 [参考：21]

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号