DOI: 10.1002/2015GL067536
论文题名: Longitudinal frequency variation of long-lasting EMIC Pc1-Pc2 waves localized in the inner magnetosphere
作者: Kim K.-H. ; Shiokawa K. ; Mann I.R. ; Park J.-S. ; Kwon H.-J. ; Hyun K. ; Jin H. ; Connors M.
刊名: Geophysical Research Letters
ISSN: 0094-9427
EISSN: 1944-9158
出版年: 2016
卷: 43, 期: 3 起始页码: 1039
结束页码: 1046
语种: 英语
英文关键词: EMIC waves
; Pc1ßšwaves
; Plasmapause
Scopus关键词: Frequency bands
; Helium
; Magnetosphere
; Fluxgate magnetometer
; Frequency changes
; Frequency variation
; Inner magnetosphere
; Polar orbiting environmental satellites
; Potential source regions
; Proton enhancements
; Wave-particle interactions
; Magnetometers
; array
; correlation
; estimation method
; helium
; magnetometer
; magnetosphere
; MetOp
; NOAA satellite
; oxygen
; wave action
; wave attenuation
; wave generation
; Canada
英文摘要: Long-lasting (> 20 h) electromagnetic ion cyclotron (EMIC) Pc1-Pc2 waves were observed by the Athabasca (L =∼ 4.6) induction magnetometer and Canadian Array for Realtime Investigations of Magnetic Activity (L =∼ 4-6) fluxgate magnetometers on 5 April 2007. These waves showed a systematic frequency change with local time, the minimum frequency near dusk, and the maximum frequency near dawn. Assuming the plasmapause as a potential source region of the waves, we estimated the plasmapause location from localized proton enhancement (LPE) events observed at NOAA-Polar Orbiting Environmental Satellites and METOP-2 satellites. We found that the longitudinal frequency variation of EMIC waves has a clear correlation with the estimated plasmapause location and that the waves are in the frequency band between the equatorial helium and oxygen gyrofrequencies at the estimated plasmapause. With our analysis results we suggest that the LPE events are caused by wave-particle interaction with the helium band EMIC waves generated near the plasmapause. © 2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84976253104&doi=10.1002%2f2015GL067536&partnerID=40&md5=ee75b85609aea0937f71d02819d08192
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10390
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: School of Space Research, Kyung Hee University, Gyeonggi, South Korea
Recommended Citation:
Kim K.-H.,Shiokawa K.,Mann I.R.,et al. Longitudinal frequency variation of long-lasting EMIC Pc1-Pc2 waves localized in the inner magnetosphere[J]. Geophysical Research Letters,2016-01-01,43(3).