...
  • 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 >Influence of Off-Sun-Earth Line Distance on the Accuracy of L1 Solar Wind Monitoring
【24h】

Influence of Off-Sun-Earth Line Distance on the Accuracy of L1 Solar Wind Monitoring

机译：Off-Sun-Earth线距离的影响L1太阳风监测的准确性

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

Upstream solar wind measurements from near the L1 Lagrangian point are commonly used to investigate solar wind-magnetosphere coupling. The off-Sun-Earth line distance of such solar wind monitors can be large, up to 100 R_E. We investigate how the correlation between measurements of the interplanetary magnetic field and associated ionospheric responses deteriorates as the off-Sun-Earth line distance increases. Specifically, we use the magnitude and polarity of the dayside region 0 field-aligned currents (R0 FACs) as a measure of interplanetary magnetic field (IMF) B_Y-associated magnetic tension effects on newly-reconnected field lines, related to the Svalgaard-Mansurov effect. The R0 FACs are derived from Advanced Magnetosphere and Planetary Electrodynamics Response Experiment measurements by a principal component analysis, for the years 2010–2016. We perform cross-correlation analyses between time-series of IMF B_Y, measured by the Wind spacecraft and propagated to the nose of the bow shock by the OMNI technique, and these R0 FAC measurements. Typically, in the summer hemisphere, cross-correlation coefficients between 0.6 and 0.9 are found. However, there is a reduction of order 0.1–0.15 in correlation coefficient between periods when Wind is close to (within 45 RE) and distant from (beyond 70 R_E) the Sun-Earth line. We find a time-lag of around 17 min between predictions of the arrival of IMF features at the bow shock and their effect in the ionosphere, irrespective of the location of Wind.
机译：上游太阳风从L1附近的测量拉格朗日点是常用的调查太阳能wind-magnetosphere耦合。off-Sun-Earth线距离的太阳风显示器可以大,100 R_E。调查之间的关系如何行星际磁场的测量和相关的电离层响应恶化随着off-Sun-Earth线距离的增加。具体来说,我们使用大小和极性的光面地区0 field-aligned电流(R0流式细胞仪)行星际磁场的测量字段(IMF) B_Y-associated磁张力影响newly-reconnected电场线,相关的Svalgaard-Mansurov效应。来自先进的磁气圈和行星电动力学响应的实验测量通过主成分分析,为年2010 - 2016。时间序列之间的国际货币基金组织(IMF)的话,测量的风航天器和传播到的鼻子泛光灯弓形激波技术,这些R0前沿空中管制官测量。半球,互关联系数在0.6和0.9之间。减少订单0.1 - -0.15的相关性当风力接近系数之间的时期(在45 RE)和远离(超过70 R_E)来观察太阳-地球。17分钟预测之间的国际货币基金组织(IMF)的到来特性的弓形激波及其效应电离层,无论风的位置。

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