GSTDTAP  > 气候变化
DOI10.1002/2017GL076139
Conjugate Ground-Spacecraft Observations of VLF Chorus Elements
Demekhov, A. G.1,2; Manninen, J.3; Santolik, O.4,5; Titova, E. E.1
2017-12-16
发表期刊GEOPHYSICAL RESEARCH LETTERS
ISSN0094-8276
EISSN1944-8007
出版年2017
卷号44期号:23
文章类型Article
语种英语
国家Russia; Finland; Czech Republic
英文摘要

We present results of simultaneous observations of VLF chorus elements at the ground-based station Kannuslehto in Northern Finland and on board Van Allen Probe A. Visual inspection and correlation analysis of the data reveal one-to-one correspondence of several (at least 12) chorus elements following each other in a sequence. Poynting flux calculated from electromagnetic fields measured by the Electric and Magnetic Field Instrument Suite and Integrated Science instrument on board Van Allen Probe A shows that the waves propagate at small angles to the geomagnetic field and oppositely to its direction, that is, from northern to southern geographic hemisphere. The spacecraft was located at L similar or equal to 4.1 at a geomagnetic latitude of -12.4 degrees close to the plasmapause and inside a localized density inhomogeneity with about 30% density increase and a transverse size of about 600 km. The time delay between the waves detected on the ground and on the spacecraft is about 1.3 s, with ground-based detection leading spacecraft detection. The measured time delay is consistent with the wave travel time of quasi-parallel whistler-mode waves for a realistic profile of the plasma density distribution along the field line. The results suggest that chorus discrete elements can preserve their spectral shape during a hop from the generation region to the ground followed by reflection from the ionosphere and return to the near-equatorial region.


领域气候变化
收录类别SCI-E
WOS记录号WOS:000419102400006
WOS关键词WHISTLER-MODE WAVES ; MAGNETOSPHERIC CHORUS ; PROPAGATION ; EMISSIONS ; AMPLITUDE ; MASER ; HISS
WOS类目Geosciences, Multidisciplinary
WOS研究方向Geology
引用统计
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/26783
专题气候变化
作者单位1.Polar Geophys Inst, Apatity, Russia;
2.Russian Acad Sci, Inst Appl Phys, Nizhnii Novgorod, Russia;
3.Univ Oulu, Sodankyla Geophys Observ, Oulu, Finland;
4.Czech Acad Sci, Inst Atmospher Phys, Prague, Czech Republic;
5.Charles Univ Prague, Fac Math & Phys, Prague, Czech Republic
推荐引用方式
GB/T 7714
Demekhov, A. G.,Manninen, J.,Santolik, O.,et al. Conjugate Ground-Spacecraft Observations of VLF Chorus Elements[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(23).
APA Demekhov, A. G.,Manninen, J.,Santolik, O.,&Titova, E. E..(2017).Conjugate Ground-Spacecraft Observations of VLF Chorus Elements.GEOPHYSICAL RESEARCH LETTERS,44(23).
MLA Demekhov, A. G.,et al."Conjugate Ground-Spacecraft Observations of VLF Chorus Elements".GEOPHYSICAL RESEARCH LETTERS 44.23(2017).
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Demekhov, A. G.]的文章
[Manninen, J.]的文章
[Santolik, O.]的文章
百度学术
百度学术中相似的文章
[Demekhov, A. G.]的文章
[Manninen, J.]的文章
[Santolik, O.]的文章
必应学术
必应学术中相似的文章
[Demekhov, A. G.]的文章
[Manninen, J.]的文章
[Santolik, O.]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。