• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Plasma physics and controlled fusion >Magnetic reconnection and Kelvin-Helmholtz instabilities at the Earth's magnetopause
【24h】

Magnetic reconnection and Kelvin-Helmholtz instabilities at the Earth's magnetopause

机译：地球磁层顶的磁重联和开尔文-亥姆霍兹不稳定性

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

Kelvin-Helmholtz instability (KHI), driven by the velocity inhomogeneity at Earth's magnetopause, has been shown to play a major role in mixing the magnetospheric and the solar wind plasma during northward periods. In fact, when the magnetospheric and interplanetary magnetic fields are mostly perpendicular to the equatorial plane, KHI can develop at a low latitude without being significantly inhibited by the magnetic tension. In contrast, at a high latitude, the more complex magnetic configuration is believed to totally stabilize the instability. This intrinsic 3D dynamics is investigated in a simplified geometry showing that KHI is able to kink the magnetic field lines at a mid-latitude and to create current layers where magnetic reconnection spontaneously develops. It is shown that a mid-latitude reconnection is able to change the global topology of the magnetic field and to connect interplanetary field lines to the Earth's cups, allowing the solar wind to directly enter the magnetosphere.
机译：开尔文-亥姆霍兹不稳定性（KHI）是由地球磁层顶的速度不均匀性驱动的，它在北风期间在混合磁层和太阳风等离子体方面发挥了重要作用。实际上，当磁层和行星际磁场大多垂直于赤道平面时，KHI可以在低纬度处发育，而不会受到磁力的明显抑制。相反，在高纬度，据信更复杂的磁性结构可以完全稳定不稳定性。这种固有的3D动力学以简化的几何形状进行了研究，表明KHI能够扭折中纬度的磁力线并创建电流层，在该电流层中自发地发生磁连接。结果表明，中纬度重新连接能够改变磁场的整体拓扑，并将行星际场线连接到地球杯，从而使太阳风直接进入磁层。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
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