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首页> 外文期刊>Journal of Geophysical Research, A. Space Physics: JGR >A global comparison of O~+ upward flows at 850 km and outflow rates at 6000 km during nonstorm times
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A global comparison of O~+ upward flows at 850 km and outflow rates at 6000 km during nonstorm times

机译：O ~ +向上流动的全球对比850公里在nonstorm和外流率在6000公里次

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摘要

There has been recent progress in understanding the sources and consequences of energetic O ~+ in the ring current and other regions of the magnetosphere. Various energization mechanisms that depend on geomagnetic activity, altitude, magnetic local time, and relative position within the auroral oval acting on O~+ have been proposed. Our understanding of the altitude and magnetic local time variation of these processes has not proceeded as rapidly, however. Contemporary magnetosphere models now include species-dependent dynamics. These models will benefit from improved spatial and altitudinal knowledge of 0+ energization processes. Here we present a global view of O~+ upward flows observed at DMSP (850 km) compared to outflow rates observed by Polar (5000-7000 km) during nonstorm times in the framework of dynamic auroral boundary coordinates. This study considers observational proxies for heating and energization mechanisms and shows that these proxies set useful boundaries on their efficacy. This study indicates that during nonstorm times (1) energization between 850 km and 5000-7000 km is predominantly transverse, (2) the efficiency of ion energization is often not focused at the boundaries of the auroral zone, and (3) auroral zone acceleration above DMSP is relatively more important in the cusp than at midnight.
机译：有最近进展的理解精力充沛的来源和后果O ~ +环电流和其他地区的磁气圈。依靠地磁活动,高度,磁当地时间和相对位置极光椭圆作用于O ~ +建议。磁当地时间变化的过程然而,没有进展迅速。现在包括当代磁层模型生物动力学。受益于改进的空间和高度的0 +激发过程的知识。提供一个全局视图O ~ +向上流动观察到DMSP(850公里)而流出利率期间观察到极地(5000 - 7000公里)nonstorm次框架的动态极光边界坐标。考虑观测为加热和代理激发机制,表明这些代理设置有用边界的功效。本研究表明nonstorm时期(1)通电850公里和5000 - 7000公里之间主要是横向,(2)效率离子激发通常不是主要的边界的极光区,(3)极光上面带加速度DMSP相对更多重要的比午夜的尖端。

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