Driving of strong nightside reconnection and geomagnetic activity by polar cap flows: Application to CME shocks and possibly other situations
作者: L.R. LyonsB. Gallardo-LacourtY. ZouY. NishimuraP. AndersonV. AngelopoulosE.F. DonovanJ.M. RuohoniemiE. MitchellL.J. PaxtonN. Nishitani
作者单位: 1Department of Atmospheric and Oceanic Sciences, University of California, Los Angeles, CA 90095-1565, USA
2Center for Space Physics and Department of Astronomy, Boston University, Boston MA 02215, USA
3Center for Space Physics and Department of Electrical and Computer Engineering, Boston University, Boston, MA 02215, USA
4Department of Physics, The University of Texas at Dallas, 800 W. Campbell Road Richardson, Texas 75080-3021, USA
5Department of Earth, Planetary, and Space Sciences, University of California, Los Angeles, CA 90095-1567, USA
6Department of Physics and Astronomy, University of Calgary, 2500 University Drive, Calgary, Alberta, T2N 1N4 Canada
7Bradley Department of Electrical and Computer Engineering, Virginia Tech, Blacksburg, VA 24061, USA
8Johns Hopkins University Applied Physics Laboratory, Laurel, MD 20723, USA
9Institute for Space-Earth Environmental Research, Nagoya University, Nagoya, Aichi 464-8601, Japan
刊名: Journal of Atmospheric and Solar-Terrestrial Physics, 2018, Vol.177 , pp.73-83
来源数据库: Elsevier Journal
DOI: 10.1016/j.jastp.2017.09.013
关键词: Magnetic stormsAuroraConvectionPolar capSubstormReconnection
原始语种摘要: Abstract(#br)Previous studies have shown that dynamic pressure impacts (e.g., shocks initiating CME storms) with southward IMF promptly lead to strong auroral nightside activity and concurrent poleward expansion (indicating strong nightside reconnection), and strong enhancements in convection and currents. Here we use a combination of ground-based ASI and radar observations to further describe this response, to address what is driving the strong activity, and to suggest similar driving in other situations. Consistent with some previous studies, we find that shock driven auroral activity and poleward expansion resembles a substorm, but starts from an already broad MLT sector without much subsequent azimuthal expansion and without classical brightening of the equatorward-most arc. We...
全文获取路径: Elsevier  (合作)

  • geomagnetic 地磁的
  • nightside 夜面
  • reconnection 重新接入
  • CME Central Memory Extension
  • strong 
  • possibly 无论如何
  • activity 活度
  • polar 极线
  • Application 应用
  • other 别的