DOI: 10.1002/2014GL062832
论文题名: First evidence for chorus at a large geocentric distance as a source of plasmaspheric hiss: Coordinated THEMIS and Van Allen Probes observation
作者: Li W. ; Chen L. ; Bortnik J. ; Thorne R.M. ; Angelopoulos V. ; Kletzing C.A. ; Kurth W.S. ; Hospodarsky G.B.
刊名: Geophysical Research Letters
ISSN: 0094-9051
EISSN: 1944-8782
出版年: 2015
卷: 42, 期: 2 起始页码: 241
结束页码: 248
语种: 英语
英文关键词: chorus
; hiss
; wave propagation
Scopus关键词: Magnetosphere
; Probes
; Ray tracing
; Wave propagation
; Chorus
; Coordinated observations
; Hiss
; Macro scale
; Plasmapause
; Plasmasphere
; Substorms
; Time-scales
; Atmospherics
; geomagnetic storm
; quantitative analysis
; ray tracing
; timescale
; wave propagation
英文摘要: Recent ray tracing suggests that plasmaspheric hiss can originate from chorus observed outside of the plasmapause. Although a few individual events have been reported to support this mechanism, the number of reported conjugate events is still very limited. Using coordinated observations between Time History of Events and Macroscale Interactions during Substorms (THEMIS) and Van Allen Probes, we report on an interesting event, where chorus was observed at a large L shell (∼9.8), different from previously reported events at L < 6, but still exhibited a remarkable correlation with hiss observed in the outer plasmasphere (L ∼ 5.5). Ray tracing indicates that a subset of chorus can propagate into the observed location of hiss on a timescale of ∼5-6 s, in excellent agreement with the observed time lag between chorus and hiss. This provides quantitative support that chorus from large L shells, where it was previously considered unable to propagate into the plasmasphere, can in fact be the source of hiss. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84923545684&doi=10.1002%2f2014GL062832&partnerID=40&md5=f93f54d2ef2acacd21bbbc22b911d7ae
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8667
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Department of Atmospheric and Oceanic Sciences, University of California, Los Angeles, CA, United States
Recommended Citation:
Li W.,Chen L.,Bortnik J.,et al. First evidence for chorus at a large geocentric distance as a source of plasmaspheric hiss: Coordinated THEMIS and Van Allen Probes observation[J]. Geophysical Research Letters,2015-01-01,42(2).