...
  • 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 >An analysis of the quiet time day-to-day variability in the formation of postsunset equatorial plasma bubbles in the Southeast Asian region
【24h】

An analysis of the quiet time day-to-day variability in the formation of postsunset equatorial plasma bubbles in the Southeast Asian region

机译：分析日常的安静时光变化postsunset的形成赤道等离子体泡沫在东南亚地区

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

Presented is an analysis of the occurrence of postsunset Equatorial Plasma Bubbles (EPBs) detected using a Global Positioning System (GPS) receiver at Vanimo. The three year data set shows that the EPB occurrence maximizes (minimizes) during the equinoxes (solstices), in good agreement with previous findings. The Vanimo ionosonde station is used with the GPS receiver in an analysis of the day-to-day EPB occurrence variability during the 2000 equinox period. A superposed epoch analysis (SEA) reveals that the altitude, and the change in altitude, of the F layer height is ～1 standard deviation (1) larger on the days for which EPBs were detected, compared to non-EPB days. These results are then compared to results from the Thermosphere Ionosphere Electrodynamics General Circulation Model (TIEGCM), which show strong similarities with the observations. The TIEGCM is used to calculate the flux-tube integrated Rayleigh-Taylor (R-T) instability linear growth rate. A SEA reveals that the modeled R-T growth rate is 1 higher on average for EPB days compared to non-EPB days, and that the upward plasma drift is the most dominant contributor. It is further demonstrated that the TIEGCM’s success in describing the observed daily EPB variability during the scintillation season resides in the variations caused by geomagnetic activity (as parameterized by Kp) rather than solar EUV flux (as parameterized by F_(10.7)). Geomagnetic activity varies the modeled high-latitude plasma convection and the associated Joule heating that affects the low-latitude F region dynamo, and consequently the equatorial upward plasma drift.
机译：是一个事件的分析postsunset赤道等离子体泡沫(环境保护局)检测到使用全球定位系统(GPS)在Vanimo接收机。EPB发生最大化(最小化)在春分和秋分(夏至和冬至)好协议与先前的发现。ionosonde站使用的GPS接收器在日常的分析EPB发生变化在2000年春分。(海)显示,叠加时代分析海拔高度的变化,F层高度是~ 1标准偏差(1)大天的组件被检测到,相比non-EPB天。而热电离层的结果电离层电动力学环流模型(TIEGCM)显示强烈的相似之处观察。计算通量管集成瑞利泰勒不稳定(rt)线性增长率。率是1高平均EPB天相比non-EPB天,向上的等离子体漂移是最主要的贡献者。证明了TIEGCM的成功描述观察到的日常EPB可变性在闪烁季节驻留在变化引起的地磁活动(如Kp)而不是太阳能EUV通量参数化f(10.7))(参数化。活动不同建模高纬度等离子体对流和相关的焦耳加热影响电机F低纬度地区,因此赤道向上的等离子体漂移。

著录项

相似文献

  • 外文文献
  • 中文文献
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