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Hemispheric Distribution of Lower-band Chorus Waves Observed by Van Allen Probes

CHENG Xiaowei GU Xudong NI Binbin ZHANG Yang

CHENG Xiaowei, GU Xudong, NI Binbin, ZHANG Yang. Hemispheric Distribution of Lower-band Chorus Waves Observed by Van Allen Probes[J]. 空间科学学报, 2020, 40(2): 186-196. doi: 10.11728/cjss2020.02.186
引用本文: CHENG Xiaowei, GU Xudong, NI Binbin, ZHANG Yang. Hemispheric Distribution of Lower-band Chorus Waves Observed by Van Allen Probes[J]. 空间科学学报, 2020, 40(2): 186-196. doi: 10.11728/cjss2020.02.186
CHENG Xiaowei, GU Xudong, NI Binbin, ZHANG Yang. Hemispheric Distribution of Lower-band Chorus Waves Observed by Van Allen Probes[J]. Journal of Space Science, 2020, 40(2): 186-196. doi: 10.11728/cjss2020.02.186
Citation: CHENG Xiaowei, GU Xudong, NI Binbin, ZHANG Yang. Hemispheric Distribution of Lower-band Chorus Waves Observed by Van Allen Probes[J]. Journal of Space Science, 2020, 40(2): 186-196. doi: 10.11728/cjss2020.02.186

Hemispheric Distribution of Lower-band Chorus Waves Observed by Van Allen Probes

doi: 10.11728/cjss2020.02.186
基金项目: 

Supported by the National Natural Science Foundation of China (41674163, 41574160), and the Hubei Province Natural Science Excellent Youth Foundation (2016CFA044)

详细信息
    作者简介:

    CHENG Xiaowei,E-mail:xwcheng@whu.edu.cn

    通讯作者:

    GU Xudong,E-mail:guxudong@whu.edu.cn

  • 中图分类号: P353

Hemispheric Distribution of Lower-band Chorus Waves Observed by Van Allen Probes

Funds: 

Supported by the National Natural Science Foundation of China (41674163, 41574160), and the Hubei Province Natural Science Excellent Youth Foundation (2016CFA044)

More Information
    Author Bio:

    CHENG Xiaowei,E-mail:xwcheng@whu.edu.cn

  • 摘要: Whistler mode chorus waves are important electromagnetic emissions due to their dual roles in acceleration and loss processes of Earth’s radiation belt electrons. A detailed global survey of lower-band chorus is performed using EMFISIS data from Van Allen Probes in near-equatorial orbits. In addition to the confirmation of the positive correlation of chorus wave intensities to geomagnetic activity and dayside-nightside distribution asymmetry of wave amplitude and occurrence probability, the analysis results find that in statistics lower-band chorus emissions exhibit higher wave occurrence rates and larger normalized peak wave frequencies in the magnetically northern hemisphere but somehow stronger peak wave intensities in the magnetically southern hemisphere. While overall the differences between the two magnetically hemispheric distributions tend to be not significant, it is important to establish the magnetically hemispheric distribution profiles of lowerband chorus with respect to L-shell, magnetic local time, and geomagnetic latitude for improved understanding of chorus-induced dynamics of radiation belt electrons.

     

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出版历程
  • 收稿日期:  2019-11-28
  • 修回日期:  2020-02-13
  • 刊出日期:  2020-03-15

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