Modulation of chorus intensity by ULF waves deep in the inner magnetosphere

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dc.citation.firstpage9444
dc.citation.issueNumber18
dc.citation.journalTitleGeophysical Research Letters
dc.citation.lastpage9452
dc.citation.volumeNumber43
dc.contributor.authorXia, Zhiyang
dc.contributor.authorChen, Lunjin
dc.contributor.authorDai, Lei
dc.contributor.authorClaudepierre, Seth G.
dc.contributor.authorChan, Anthony A.
dc.contributor.authorSoto-Chavez, A.R.
dc.contributor.authorReeves, G.D.
dc.date.accessioned2017-05-19T19:09:39Z
dc.date.available2017-05-19T19:09:39Z
dc.date.issued2016
dc.description.abstractPrevious studies have shown that chorus wave intensity can be modulated by Pc4-Pc5 compressional ULF waves. In this study, we present Van Allen Probes observation of ULF wave modulating chorus wave intensity, which occurred deep in the magnetosphere. The ULF wave shows fundamental poloidal mode signature and mirror mode compressional nature. The observed ULF wave can modulate not only the chorus wave intensity but also the distribution of both protons and electrons. Linear growth rate analysis shows consistence with observed chorus intensity variation at low frequency (f <∼ 0.3fce), but cannot account for the observed higher-frequency chorus waves, including the upper band chorus waves. This suggests the chorus waves at higher-frequency ranges require nonlinear mechanisms. In addition, we use combined observations of Radiation Belt Storm Probes (RBSP) A and B to verify that the ULF wave event is spatially local and does not last long.
dc.identifier.citationXia, Zhiyang, Chen, Lunjin, Dai, Lei, et al.. "Modulation of chorus intensity by ULF waves deep in the inner magnetosphere." <i>Geophysical Research Letters,</i> 43, no. 18 (2016) Wiley: 9444-9452. https://doi.org/10.1002/2016GL070280.
dc.identifier.doihttps://doi.org/10.1002/2016GL070280
dc.identifier.urihttps://hdl.handle.net/1911/94294
dc.language.isoeng
dc.publisherWiley
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
dc.titleModulation of chorus intensity by ULF waves deep in the inner magnetosphere
dc.typeJournal article
dc.type.dcmiText
dc.type.publicationpublisher version
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