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首页> 外文期刊>Journal of Geophysical Research, A. Space Physics: JGR >Observational Evidence of Transient Lobe Reconnection Triggered by Sudden Northern Enhancement of IMF Bz
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Observational Evidence of Transient Lobe Reconnection Triggered by Sudden Northern Enhancement of IMF Bz

机译：瞬态叶的观测证据重新连接由突如其来的北部增强国际货币基金组织的热

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摘要

In general, lobe reconnection occurs under northward interplanetary magnetic field (IMF) Bz. However, what process can trigger lobe reconnection has not been fully understood. Using observations from SuperDARN radar and Defense Meteorological Satellite Program (DMSP) spacecraft, we found that (a) short-term sunward ionospheric flow bursts observed by SuperDARN poleward of the cusp showed one-to-one correspondent with the sudden increase of the IMF Bz, (b) the sunward flow bursts observed by SurperDARN were associated with sunward ion drifts identified from the DMSP satellite, and (c) a cusp auroral spot, together with an inverse ion energy dispersion, was observed in association with one of the flow bursts. We suggest that these observations provide evidence that the lobe reconnections can be triggered by a sudden increase of the IMF Bz component. What’s more, we found that the reconnection signatures disappeared quickly after the IMF Bz enhancement being over, which indicates that the lobe reconnection triggered by the sudden increase of the IMF Bz is a transient process.
机译：一般来说,叶重联发生在向北行星际磁场(IMF)。然而,过程可以触发叶重新连接并没有被完全理解。观察从SuperDARN雷达和防御气象卫星计划(DMSP)宇宙飞船,我们发现(a)短期朝着太阳电离层暴SuperDARN观察到流动向极尖端的一对一记者与IMF的突然增加, (b)朝着太阳流观测到SurperDARN与朝着太阳离子有关从DMSP卫星漂移了,(c)一个尖端极光的地方,连同一个逆离子能量色散,被观察到与一个流爆发。表明,这些观测结果提供证据叶重联可以引发的突然增加IMF的Bz组件。我们发现,重新连接签名国际货币基金组织Bz增强后很快就消失了作为结束,这表明叶重新连接引起的突然增加国际货币基金组织Bz是一个瞬态过程。

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