Plasma drift estimates from the Dynasonde: comparison with EISCAT measurements
Plasma drift estimates from the Dynasonde: comparison with EISCAT measurements
复制标题
Dynasonde 的等离子体漂移估计：与 EISCAT 测量结果的比较
DOI：
10.1007/s00585-998-1138-y
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发表时间：
1998
影响因子：
1.9
通讯作者：
M. Rietveld
中科院分区：
文献类型：
--
作者：
K. J. F. Sedgemore;J. Wright;P. J. Williams;G. Jones;M. Rietveld
现代电离层探测仪几乎可以同时测量不同方向和不同高度上相位路径的时间变化率。通过结合这些“多普勒”测量和许多这样的雷达回波的到达角，可以导出针对定义的散射体积的等离子体漂移速度的可靠估计。从多频和kinesonde模式探测在3分钟的分辨率的结果表明，Dynasonde派生的F-区域漂移速度是在良好的协议与EISCAT，尽管数据丢失的间隔期间的“覆盖”强烈的E-区域电离。很明显，采用标准操作模式的TromsweetDynasonde在安静到适度活跃的条件下给出了整体对流模式的可靠指示。
Modern ionosondes make almost simultaneous measurements of the time rate of change of phase path in different directions and at different heights. By combining these ‘Doppler’ measurements and angles of arrival of many such radar echoes it is possible to derive reliable estimates of plasma drift velocity for a defined scattering volume. Results from both multifrequency and kinesonde-mode soundings at 3-min resolution show that the Dynasonde-derived F-region drift velocity is in good agreement with EISCAT, despite data loss during intervals of ‘blanketing’ by intense E-region ionisation. It is clear that the Tromsø Dynasonde, employing standard operating modes, gives a reliable indication of overall convection patterns during quiet to moderately active conditions.