...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Geophysical Research, A. Space Physics: JGR >Observation of the neutral-ion coupling through 6day planetary wave
【24h】

Observation of the neutral-ion coupling through 6day planetary wave

机译：通过观察的neutral-ion耦合6天行星波

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

A westward 6 day oscillation with zonal wave number 1 is identified in the global maps of the ionospheric total electron content (TEC) during May 2003. This signature coincides with the wave activities in the mesosphere and lower thermosphere (MLT) region with a similar zonal structure and period, deduced from the temperature and wind observations from the Thermosphere Ionosphere and Mesosphere Electric Dynamics (TIMED) satellite. The vertical wavelength of this 6 day wave is estimated to be ~65 km,which enables it to propagate up into the lower thermosphere and therefore modulate the ionosphere through E region wind dynamo. The zonal wind perturbations of the 6 day wave maximize in the equatorial region with an amplitude of ~30 m/s and the meridional wind perturbations peak at middle latitudes with an amplitude of 15–20 m/s. The 6 day oscillation in TEC peaks at the geomagnetic equatorial ionization anomaly (EIA) crests in both hemispheres with a deep minimum at the equator. The absolute TEC perturbationsmaximize at ~1400–1800 LT with an amplitude of ~9 (~7) total electron content unit (TECU; 1 TECU = 10~(16)m~(-2)) in the southern (northern) hemisphere, which account for ~16% (~10%) of the background TEC. Larger relative TEC perturbations of ~20% are found at 0200–0400 LT. The similar wave number-period spectra and the consistent temporal variations of the 6 day periodical signatures in both neutral atmosphere and ionosphere suggest a strong neutral-ion coupling through planetary wave.
机译：西6天与纬向波振荡数字1是确定的全球地图电离层总电子含量(TEC)期间2003年5月。活动在中间层和低热电离层(MLT)地区类似的区域结构和时期,推导出的温度和风力的观察热大气层电离层和中间层电气动力学(定时)卫星。波长的波估计是6天~ 65公里,这使它能够传播到降低热大气层,因此调整通过电离层E地区风力发电机。纬向风扰动波的6天在赤道地区的最大化~ 30 m / s振幅和经向风在中纬度地区的扰动峰值15 - 20 m / s的振幅。在地磁赤道TEC的山峰电离异常(EIA)在两个波峰半球在赤道深度最小。绝对的TEC perturbationsmaximize~ 1400 - 1800 LT的振幅~ 9 (~ 7)电子内容单元(特;10 ~ (16) m ~(2))在南(北)半球,占~ 16% (~ 10%)背景侦探。~ 20%被发现在0200 - 0400类似的中尉波数字周期谱和一致的时间变化的期刊6天在中性气氛和签名电离层建议neutral-ion强耦合通过行星波。

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