First radar measurements of ionospheric electric fields at sub‐second temporal resolution
First radar measurements of ionospheric electric fields at sub‐second temporal resolution
复制标题
首次以亚秒时间分辨率雷达测量电离层电场
DOI：
10.1029/2007gl032164
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发表时间：
2008
影响因子：
5.2
通讯作者：
E. Talaat
中科院分区：
文献类型：
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作者：
R. Greenwald;K. Oksavik;R. Barnes;J. Ruohoniemi;J. Baker;E. Talaat
Wallops Island 和 Goose Bay SuperDARN 雷达目前使用的一种新的多脉冲探测技术显着提高了多普勒速度测量的时间分辨率，通过多普勒速度测量可以确定等离子体速度和电场。新技术允许根据雷达传输的每 200 毫秒多脉冲序列确定多普勒速度（相当于 5 Hz 测量速率）。据我们所知，这是电离层雷达有史以来达到的最高多普勒测量率。使用瓦洛普斯雷达和渥太华磁力计对新技术进行的测试显示，在亚暴扩展阶段，会出现周期为 13-20 秒的亚极光电场和磁场脉动爆发。这些结果表明，SuperDARN 测量可用于研究磁层-电离层耦合系统中的高动态过程，包括风暴和亚暴电动力学、焦耳热的短期脉动和短期变化。
A new multipulse sounding technique currently being used at the Wallops Island and Goose Bay SuperDARN radars has produced significant improvements in the temporal resolution of Doppler velocity measurements from which plasma velocities and electric fields are determined. The new technique allows Doppler velocities to be determined from every 200 ms multipulse sequence transmitted by the radar (equivalent to a 5 Hz measurement rate). To our knowledge, this is the highest Doppler measurement rate that has ever been attained with ionospheric radars. Tests of the new technique with the Wallops radar and Ottawa magnetometer revealed bursts of subauroral electric and magnetic field pulsations with periods of 13–20 s during a substorm expansion phase. These results indicate that SuperDARN measurements can be used to study highly dynamic processes in the coupled magnetosphere‐ionosphere system, including storm and substorm electrodynamics, short‐period pulsations and short‐term variability in Joule heating.
一种新的SuperDARN流星风测量：原始时间序列分析方法及其在中层顶区域动力学中的应用
DOI：
--
发表时间：
2002
期刊：
Geophys.Res.Lett. 29・20
影响因子：
--
作者：
Yukimatu;A.S.;Tsutsumi;M.
通讯作者：
M.