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首页> 外文期刊>Geophysical Research Letters >Sounding-rocket observation of OII 83.4-nm emission over the polar ionosphere - art. no. 2005
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Sounding-rocket observation of OII 83.4-nm emission over the polar ionosphere - art. no. 2005

机译:在极地电离层上对OII 83.4 nm发射的探空火箭观测-art。没有。 2005年

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摘要

Results of recent satellite observations indicate that a large amount of O+ are escaping from the terrestrial ionosphere into the magnetosphere. However, either the global distribution or the temporal variation of such O+ escape has not been understood well yet. A 2-Dimensional observation of oxygen ion emission (e.g., O II 83.4 nm) provides crucial information on the oxygen escape processes. In order to establish the basic technology required for such a 2-D (i.e., imaging) observation, we have developed an eXtreme Ultra-Violet (XUV) sensor sensitive to the O II 83.4-nm emission. In this study we present recent results of the observation of O+ ion escape from the ionosphere in the polar cap region using our XUV sensor carried by the sounding rocket SS-520-2. The XUV sensor successfully obtained an altitudinal profile of the intensity of the O II emission from 150 km through 1100 km of altitudes and detected 5-6 Rayleighs of the O II emission from the uppermost part of the ionosphere. The observation suggests that O+ ions convected from the cusp/cleft region exist over the polar ionosphere. [References: 32]
机译:最近的卫星观测结果表明,大量O +从地面电离层逸出到磁层。但是,这种O +逸出的总体分布或时间变化尚未得到很好的理解。氧离子发射的二维观察(例如,O II 83.4 nm)提供了有关氧逃逸过程的重要信息。为了建立这种二维(即成像)观测所需的基本技术,我们开发了对O II 83.4-nm发射敏感的eXtreme紫外线(XUV)传感器。在这项研究中,我们提供了由探测火箭SS-520-2携带的XUV传感器观测到的O +离子从极帽区域电离层逸出的最新结果。 XUV传感器成功获得了从150 km到1100 km高度的O II发射强度的高度分布图,并从电离层最上部检测到5-6 Rayleighs的O II发射。观察结果表明,从尖/裂区对流的O +离子存在于极性电离层上。 [参考:32]

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