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首页> 外文期刊>Journal of atmospheric and solar-terrestrial physics >Measuring lightning-induced ionospheric effects with incoherent scatter radar or with cross-modulation
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Measuring lightning-induced ionospheric effects with incoherent scatter radar or with cross-modulation

机译：使用非相干散射雷达或交叉调制测量雷电引起的电离层效应

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摘要

Measurements have been made of the ionosphere during lightning storms using the incoherent scatter radar at Arecibo, Puerto Rico. Attempts were made to detect the expected increases in the D-region electron number densities, and possible changes in the plasma line echoes in the F-region. No D-region density changes were detected, to a limit of under 200/cc. This upper limit on possible lightning-induced ionization is not necessarily in conflict with predictions, which are of the same order as this limit and depend on assumptions of the strength and duration of the lightning. Spectral plasma line measurements of the incoherent scatter in the F-region, which are a sensitive indication of E-field variations also did not show any changes associated with individual lightning strikes. An alternative method of searching for D-region changes due to lightning is a cross-modulation or riometer experiment, which is modeled here.
机译：使用波多黎各阿雷西博的非相干散射雷达对雷暴期间的电离层进行了测量。尝试检测D区域电子数密度的预期增加，以及F区域中等离子体线回波的可能变化。没有检测到D区域密度变化，其极限在200 / cc以下。可能的雷电诱发电离的上限不一定与预测相抵触，预测与该限制的阶数相同，并取决于闪电强度和持续时间的假设。 F区域非相干散射的光谱等离子线测量是电场变化的敏感指示，也未显示与单个雷击相关的任何变化。搜索由于闪电引起的D区域变化的另一种方法是交叉调制或频率计实验，在此建模。

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