Sporadic ionization at high latitudes
Sporadic ionization at high latitudes
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高纬度地区零星电离
DOI：
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发表时间：
1949
期刊：
影响因子：
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通讯作者：
J. Meek
中科院分区：
文献类型：
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作者：
J. Meek
零星电离被定义为在 h'f 电离层记录中看到的痕迹，与正常区域痕迹相比，其频率或垂直高度出现快速或不稳定的变化。这样的记录在加拿大北部的车站很常见。
描述了四种类型的 F 区偶发电离和五种类型的 E 区电离。在加拿大贝克湖进行的连续扫描说明了其中一些类型的零星电离的变化。对空间站上空一些零星“电离云”的运动速度进行了估计。在一些可测量的情况下，这些范围从虚拟高度为 100 公里的云的每小时 400 公里到虚拟高度为 300 公里的云的每小时 1,200 公里。
Sporadic ionization is defined as traces seen on h′f ionospheric records which show rapid or erratic variation in frequency or vertical height as compared with the normal region traces. Such records are quite common at northern Canadian stations.
Four types of F-region sporadic ionization and five types of E-region ionization are described. Continuous sweeps taken at Baker Lake, Canada, illustrate the variation of some of these types of sporadic ionization. Estimates were made of the speeds of motion over the station of some of the sporadic “ionized clouds.” These in a few measurable cases ranged from 400 km per hour for clouds at 100 km virtual height to 1,200 km per hour for clouds at 300 km virtual height.