...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Earth, planets and space: EPS >GPS observations of post-storm TEC enhancements at low latitudes
【24h】

GPS observations of post-storm TEC enhancements at low latitudes

机译：低纬地区暴风雨后TEC增强的GPS观测

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

In a previous work (J. Geophys. Res., 110(A01308), 1-11, 2005), the authors developed an original approach to the processing of total electron content (TEC) data obtained by GPS signals from the Japan receiver network. This approach includes removing the diurnal and seasonal variation carried by 27-day medians and the solar rotation periodicity. The relative deviations of TEC from the median-from all measured locations at a given hour-were then approximated by a regression line along the main prolongation of the Japan islands, between latitudes 24 degrees and 45 degrees N. The two variables of the regression line, the average value at the center and the slope were obtained as a time series, and their behavior during geomagnetic storms in the period 2000-2002 were analyzed. One interesting result was the observed enhancement of TEC at the end of the recovery phase of the storms. The slope variations clearly showed that this enhancement started from the south and was interpreted as a poleward expansion of equatorial crest. In the present paper we further analyze this post-storm phenomenon, adding foF2 data from Japanese Kokubunji and Okinawa ionosondes. We also show the latitude extension of the poleward expansion by using lat/UT contour plots. The results confirm that most of the post-storm TEC enhancements are part of the equatorial crest region which extends poleward during nighttime. In some cases, the enhanced TEC structures develop by separating from the crest region. Daytime TEC enhancements were also observed. Their structures are not confined to the equatorial crests region, but occupy the whole latitude range considered in this study. TEC post-storm enhancements were generally found to be in agreement with foF2 variations.
机译：在以前的工作中（J. Geophys。Res。，110（A01308），2005年1月11日），作者开发了一种原始方法来处理由日本接收器网络的GPS信号获得的总电子含量（TEC）数据。这种方法包括消除27天中位数所带来的日变化和季节变化以及太阳旋转周期。然后，通过沿日本诸岛的主要延长线（北纬24度和45度之间）的回归线，近似得出TEC与给定小时内所有测量位置的中值的相对偏差。回归线的两个变量，按时间序列求出了中心和斜率的平均值，并分析了它们在2000-2002年期间地磁暴期间的行为。一个有趣的结果是在风暴恢复阶段结束时观察到的TEC增强。坡度变化清楚地表明，这种增强是从南方开始的，并且被解释为赤道波峰的极向扩展。在本文中，我们进一步分析了这种风暴后现象，并添加了来自日本国分寺号和冲绳离子探空仪的foF2数据。我们还通过使用lat / UT等高线图显示了极向扩展的纬度扩展。结果证实，大多数风暴后TEC增强是赤道波峰区域的一部分，该赤道波峰区域在夜间向极地延伸。在某些情况下，增强的TEC结构通过与波峰区分开而形成。还观察到白天TEC增强。它们的结构不限于赤道波峰区域，而是占据了本研究中考虑的整个纬度范围。通常发现TEC风暴后的增强与foF2变化相一致。

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