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首页> 外文期刊>Journal of Geophysical Research, A. Space Physics: JGR >An investigation comparing ground-based techniques that quantify auroral electron flux and conductance
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An investigation comparing ground-based techniques that quantify auroral electron flux and conductance

机译：调查比较地基技术极光电子通量和量化电导

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摘要

We present three case studies that examine optical and radar methods for specifying precipitating auroral flux parameters and conductances. Three events were chosen corresponding to moderate nonsubstorm auroral activity with 557.7 nm intensities greater than 1kR. A technique that directly fits the electron number density from a forward electron transport model to alternating code incoherent scatter radar data is presented. A method for determining characteristic energy using neutral temperature observations is compared against estimates from the incoherent scatter radar. These techniques are focused on line-of-sight observations that are aligned with the local geomagnetic field. Good agreement is found between the optical and incoherent scatter radar methods for estimates of the average energy, energy flux, and conductances. The Pedersen conductance predicted by Robinson et al. (1987) is in very good agreement with estimates calculated from the incoherent scatter radar observations. However, we present an updated form of the relation by Robinson et al. (1987), Σ_H∕Σ_P = 0.57~(0.53), which was found to be more consistent with the incoherent scatter radar observations. These results are limited to similar auroral configurations as in these case studies. Case studies are presented that quantify auroral electron flux parameters and conductance estimates which can be used to specify the magnitude of energy dissipated within the ionosphere resulting from magnetospheric driving.
机译：我们提出三个案例研究,研究光学和雷达方法指定沉淀极光通量参数和电导。事件选择相应的温和557.7 nm nonsubstorm极光活动强度大于1 kr。直接从一个适合电子数密度提出了电子传递模型来交流提出了非相干散射雷达数据的代码。方法来确定特征能量使用中性温度观测相比与估计的语无伦次散射雷达。视线与观察当地的地磁场。光学和非相干散射之间的发现雷达的平均估计的方法能源、能量流和电导。皮德森电导预测的罗宾逊et al。(1987)与估计是在很好的协议计算的非相干散射雷达观察。关系的罗宾逊et al . (1987),Σ_H∕Σ_P = 0.57 ~(0.53),它被发现更多的与非相干散射雷达一致观察。在这些情况下类似极光的配置研究。极光电子通量参数和电导估计可以用于指定级内的能量消散电离层产生的磁性层的驾驶。

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