Modeling radiation belt electron acceleration by ULF fastmode waves,   launched by solar wind dynamic pressure fluctuations

doi:10.1002/2013JA019672

CORC > 北京大学 > 地球与空间科学学院

	Modeling radiation belt electron acceleration by ULF fastmode waves, launched by solar wind dynamic pressure fluctuations
	Degeling, A. W. ; Rankin, R. ; Zong, Q.G.
刊名	journal of geophysical research space physics
	2014
关键词	radiation belts ULF waves magnetopause buffeting adiabatic electron transport MAGNETOSPHERE MAGNETOPAUSE IONOSPHERE RESONANCES TRANSPORT
DOI	10.1002/2013JA019672
英文摘要	We investigate the magnetospheric MHD and energetic electron response to a Storm Sudden Commencement (SSC) and subsequent magnetopause buffeting, focusing on an interval following an SSC event on 25 November 2001. We find that the electron flux signatures observed by LANL, Cluster, and GOES spacecraft during this event can largely be reproduced using an advective kinetic model for electron phase space density, using externally prescribed electromagnetic field inputs, (herein described as a test-kinetic model) with electromagnetic field inputs provided by a 2-D linear ideal MHD model for ULF waves. In particular, we find modulations in electron flux phase shifted by 90 degrees from the local azimuthal ULF wave electric field (E) and a net enhancement in electron flux after 1.5 h for energies between 500 keV and 1.5 MeV near geosynchronous orbit. We also demonstrate that electrons in this energy range satisfy the drift resonance condition for the ULF waves produced by the MHD model. This confirms the conclusions reached by Tan et al. (2011), that the energization process in this case is dominated by drift-resonant interactions between electrons and MHD fast mode waves, produced by fluctuations in solar wind dynamic pressure.; Astronomy & Astrophysics; SCI(E); 0; ARTICLE; degeling@ualberta.ca; 11; 8916-8928; 119
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/207279]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	Degeling, A. W.,Rankin, R.,Zong, Q.G.. Modeling radiation belt electron acceleration by ULF fastmode waves, launched by solar wind dynamic pressure fluctuations[J]. journal of geophysical research space physics,2014.
APA	Degeling, A. W.,Rankin, R.,&Zong, Q.G..(2014).Modeling radiation belt electron acceleration by ULF fastmode waves, launched by solar wind dynamic pressure fluctuations.journal of geophysical research space physics.
MLA	Degeling, A. W.,et al."Modeling radiation belt electron acceleration by ULF fastmode waves, launched by solar wind dynamic pressure fluctuations".journal of geophysical research space physics (2014).