...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Geophysical Research, A. Space Physics: JGR >The evolution of flux pileup regions in the plasma sheet: Cluster observations
【24h】

The evolution of flux pileup regions in the plasma sheet: Cluster observations

机译：通量堆积地区等离子体的演化表:集群的观察

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

[1] Bursty bulk flows (BBFs) play an important role for the mass, energy, and magnetic flux transport in the plasma sheet, and the flow pattern in and around a BBF has important consequences for the localized energy conversion between the electromagnetic and plasma mechanical energy forms. The plasma flow signature in and around BBFs is often rather complicated. Return flows and plasma vortices are expected to exist at the flanks of the main flow channel, especially near the inner plasma sheet boundary, but also farther down-tail. A dipolarization front (DF) is often observed at the leading edge of a BBF, and a flux pileup region (FPR) behind the DF. Here we present Cluster data of three FPRs associated with vortex flows observed in the midtail plasma sheet on 15 August 2001. According to the principles of Fu et al. (2011, 2012c), two of the FPRs are considered to be in an early stage of evolution (growing FPRs). The third FPR is in a later stage of evolution (decaying FPR). For the first time, the detailed energy conversion properties during various stages of the FPR evolution have been measured. We show that the later stage FPR has a more complex vortex pattern than the two earlier stage FPRs. The two early stage FPR correspond to generators, E · J 0. Moreover, to our knowledge, this is one of the first times BBF-related plasma vortices have been observed to propagate over the spacecraft in the midtail plasma sheet at geocentric distances of about 18R_E. Our observations are compared to recent simulation results and previous observations.
机译：[1]丛发性散装流(bbf)发挥重要角色的质量、能源和磁通传输在等离子体表和流模式和BBF有重要局部能量转换的后果电磁波与等离子体之间的机械能源形式。在bbf往往是相当复杂的。流和等离子体漩涡将存在侧翼的主要流动通道,特别是在内部等离子板边界附近,而且down-tail更远。阵线(DF)经常被观察到前缘BBF,通量堆积区域(玻璃钢)DF。玻璃钢与涡流动中观察到2001年8月15日midtail等离子板。傅的原则et al .(2011、2012 c),两个玻璃钢的被认为是在早期阶段的进化(玻璃钢)增长。在进化的后期(腐烂的玻璃钢)。第一次详细的能量在不同阶段的转换特性玻璃钢进化已经测量。后期玻璃钢有更加复杂玻璃钢涡模式比前面两个阶段。这两个早期玻璃钢与发电机相对应,E·J 0. 第一次BBF-related等离子漩涡观察到飞船的传播midtail等离子板在地心的距离18 r_e。最近的仿真结果和之前观察。

著录项

相似文献

  • 外文文献
  • 中文文献
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号