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首页> 外文期刊>Geophysical Research Letters >Observations of electron density and electron temperature during large scale magnetic fields in the dayside Venus ionosphere and lesson for Mars
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Observations of electron density and electron temperature during large scale magnetic fields in the dayside Venus ionosphere and lesson for Mars

机译：日间金星电离层大磁场中电子密度和电子温度的观测及火星的教训。

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摘要

We first present several dayside electron density (Ne) and electron temperature (Te) profiles observed by the Langmuir probe experiment aboard Pioneer Venus Orbiter when the Venus ionosphere was in a magnetised state and then examine the effect of large scale magnetic fields on the Venus ionosphere. We find that for the magnetised ionospheres, the “top” moves down to altitudes near 200 km and the ionopause layers with steep altitude gradients in Ne and Te start above this altitude. No significant change in electron density and electron temperature is seen within the ionosphere. Occasionally a second ionopause layer is also seen at higher altitudes and the ionospheric region between the two ionopause layers, which is seen to extend to altitudes up to 250 km, too does not indicate any significant change in Ne and Te for these cases. These results have direct relevance to Mars where large scale ionospheric fields have also been observed.
机译：首先，我们介绍了当金星电离层处于磁化状态时，先驱者金星轨道上的Langmuir探针实验观察到的几种日间电子密度（Ne）和电子温度（Te）分布，然后研究了大范围磁场对金星电离层的影响。我们发现，对于磁化的电离层，“顶部”向下移动至200 km附近的高度，并且Ne和Te中具有陡峭高度梯度的电离层开始于该高度以上。在电离层中没有看到电子密度和电子温度的显着变化。有时，在更高的高度还可以看到第二个电离层，而两个电离层之间的电离层区域可以延伸到250 km以下的高度，在这些情况下，Ne和Te也没有任何显着变化。这些结果与火星直接相关，在火星上也已经观测到大规模电离层场。

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