...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Natural hazards and earth system sciences >Similar behaviors of natural ELF/VLF ionospheric emissions and transmitter signals over seismic Adriatic regions
【24h】

Similar behaviors of natural ELF/VLF ionospheric emissions and transmitter signals over seismic Adriatic regions

机译：地震亚得里亚海地区自然ELF / VLF电离层发射和发射器信号的类似行为

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

We report on the analysis of ELF/VLF emissions observed by the Instrument Champ Electrique (ICE) experiment onboard the DEMETER micro-satellite. We consider principally selected seismic events reported by Molchanov et al. (2006). These authors studied the VLF signals radiated by ground transmitters and received on board the DEMETER micro-satellite. They revealed a drop of the signals (scattering spot) connected with the occurrence of large earthquakes. In our investigations, we proceed to a spectral analysis of ICE observations with the aim to find if the natural ionospheric VLF/ELF emissions show, or not, a similar "drop;; in the intensity as it is the case of the VLF transmitter signal. We combine our results with those of Molchanov et al. (2006), and we discuss the origin of such interesting ionospheric features in the frame of the investigation of the pre-seismic electromagnetic emissions. We show that the geomagnetic activity is a key parameter which could disturb the natural VLF ionospheric emissions, and also the transmitter signal. We find that it is not possible to conclude the presence, or not, of a preseismic effect when the Kp-index is higher than one.
机译：我们报告了DEMETER微卫星上的仪器仪表电子（ICE）实验观察到的ELF / VLF发射的分析。我们考虑了主要由Molchanov等人报道的地震事件。 （2006）。这些作者研究了地面发射器辐射并在DEMETER微卫星上接收的VLF信号。他们揭示出与大地震发生有关的信号下降（散射点）。在我们的研究中，我们进行ICE观测的频谱分析，旨在发现自然电离层VLF / ELF发射是否显示或不显示类似的“下降”;在强度上，如VLF发射器信号一样。我们将我们的结果与Molchanov等人（2006）的结果相结合，并在研究地震前电磁辐射的框架中讨论了这种有趣的电离层特征的起源，表明地磁活动是关键参数我们发现，当Kp指数大于1时，无法推断是否存在地震作用。

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