Some effects of dense E 8 clouds on high‐latitude HF backscatter observations
Some effects of dense E 8 clouds on high‐latitude HF backscatter observations
复制标题
稠密 E 8 云对高纬度高频反向散射观测的一些影响
DOI：
10.1029/jz070i023p05895
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发表时间：
1965
影响因子：
--
通讯作者：
H. Bates
中科院分区：
文献类型：
--
作者：
H. Bates
在学院经常观察到缺少来自北方地磁象限的高频地面散射，通常伴随着来自北方的一些直接散射回波。本文表明，这两种现象都可以用一个包含密集、斑块状e层电离区域的模型来简单解释。进一步表明，在大学观测到的非地散射回波大部分是E区和F区散射，它们直接传播或以各种组合E-F模式传播回观测点。对学院记录的分析表明，散射不规则性经常以离散片的形式出现，并在F2最大值以下延伸到电离层。证据表明这些薄片是沿着地磁场排列的。
A lack of HF groundscatter from the northern geomagnetic quadrant was frequently observed at College, often accompanied by a number of direct scatter echoes from the north. This paper shows that both these phenomena can be simply explained by a model containing dense, patchy regions of E-layer ionization. It is further shown that the majority of the nongroundscatter echoes observed at College are scatter from the E and F regions that propagated both directly and in various combination E-F modes back to the observing site. An analysis of the College records shows that the scattering irregularities were frequently in the form of a discrete sheet which extended through the ionosphere below the F2 maximum. The evidence suggests that these sheets are aligned along the geomagnetic field.