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首页> 外文期刊>Journal of Geophysical Research, A. Space Physics: JGR >Effects of solar wind dynamic pressure on the ionospheric O~+ fluence during the 31 August 2005 storm
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Effects of solar wind dynamic pressure on the ionospheric O~+ fluence during the 31 August 2005 storm

机译：太阳风动态压力的影响电离层O ~ +影响在2005年8月31日风暴

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摘要

The Multifluid-Lyon-Fedder-Mobarry (MFLFM) global simulation model incorporating an ionospheric cusp O~+ outflow model based on an empirical relation between downward DC Poynting flux and O~+ outflow flux regulated by the precipitating electron number flux (Fen) is used to simulate the 31 August 2005 storm. A baseline run incorporating the original solar wind data is contrasted against a case where the solar wind dynamic pressure (P_(dyn)) is artificially adjusted to see what effects this variable has on the O~+ fluence generated in the model. Consistent with data, it is found that both the fluence and O~+ outflow flux have a positive correlation with the solar wind dynamic pressure. Additionally, changes in P_(dyn) affect the downward Poynting flux only marginally and regulates both outflow flux and cusp outflow area via Fen. Increases in P_(dyn) lead to increased cusp electron precipitation, which has the physical effect of enhancing the upwelling O~+ population available for outflow.
机译：Multifluid-Lyon-Fedder-Mobarry (MFLFM)全球仿真模型包含一个电离层基于实证的尖端O ~ +流出模型向下的能流密度通量和之间的关系O ~ +流出通量受沉淀电子通量(沼泽)是用来模拟2005年8月31日风暴。将原来的太阳风数据对比情况太阳风动态压力(P_(动力学))是人为的这个变量对调整,看看效果O ~ +积分通量模型中生成的。与数据一致,发现这两个影响和O ~ +流出通量有积极的相关性与太阳风动态压力。此外,改变P_(动力学)的影响向下的坡印亭只有轻微和通量调节流出通量和尖端流出区域通过沼泽。尖端电子降水,物理效应增强上升流O ~ +人口外流。

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