globalchange  > 气候减缓与适应
DOI: 10.1002/2014GL059320
论文题名:
A model for falling-tone chorus
作者: Soto-Chavez A.R.; Wang G.; Bhattacharjee A.; Fu G.Y.; Smith H.M.
刊名: Geophysical Research Letters
ISSN: 0094-10269
EISSN: 1944-10000
出版年: 2014
卷: 41, 期:6
起始页码: 1838
结束页码: 1845
语种: 英语
英文关键词: chorus ; frequency sweep ; Van Allen radiation belts ; wave-particle resonances ; whistlers
Scopus关键词: Geomagnetism ; Phase space methods ; chorus ; Chorus generation ; Frequency sweep ; Geomagnetic fields ; Oblique angles ; Phase space structures ; Van allen radiation belts ; whistlers ; Ionizing radiation ; damping ; electromagnetic wave ; geomagnetic field ; wave modeling ; Pachycephalidae
英文摘要: Motivated by the fact that geomagnetic field inhomogeneity is weak close to the chorus generation region and the observational evidence that falling-tone chorus tend to have large oblique angles of propagation, we propose that falling-tone chorus start as a marginally unstable mode. The marginally unstable mode requires the presence of a relatively large damping, which has its origins in the Landau damping of oblique waves in this collisionless environment. A marginally unstable mode produces phase-space structures that release energy and produce wave chirping. We show that the present model produces results in reasonable agreement with observations. © 2014. American Geophysical Union. All Rights Reserved.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84896552298&doi=10.1002%2f2014GL059320&partnerID=40&md5=47f0cd8df7a6a57bb1fbfe26e2145598
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被引频次[WOS]:22   [查看WOS记录]     [查看WOS中相关记录]
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7533
Appears in Collections:气候减缓与适应

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作者单位: Princeton Center for Heliospheric Physics, Department of Astrophysical Sciences, Princeton University, Princeton, NJ, United States

Recommended Citation:
Soto-Chavez A.R.,Wang G.,Bhattacharjee A.,et al. A model for falling-tone chorus[J]. Geophysical Research Letters,2014-01-01,41(6).
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