English
 
Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
Add to Basket
  Local TagsRelease HistoryDetailsSummary

Released
Journal Article

Modulation of Whistler Mode Waves by Ultra‐Low Frequency Wave in a Macroscale Magnetic Hole: MMS Observations

Authors

Zhang,  He
External Organizations;

Zhong,  Zhihong
External Organizations;

Tang,  Rongxin
External Organizations;

Deng,  Xiaohua
External Organizations;

Li,  Haimeng
External Organizations;

/persons/resource/dedong

Wang,  D.
2.7 Space Physics and Space Weather, 2.0 Geophysics, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

External Ressource
No external resources are shared
Fulltext (public)

5008817.pdf
(Publisher version), 5MB

Supplementary Material (public)
There is no public supplementary material available
Citation

Zhang, H., Zhong, Z., Tang, R., Deng, X., Li, H., Wang, D. (2021): Modulation of Whistler Mode Waves by Ultra‐Low Frequency Wave in a Macroscale Magnetic Hole: MMS Observations. - Geophysical Research Letters, 48, 22, e2021GL096056.
https://doi.org/10.1029/2021GL096056


Cite as: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5008817
Abstract
We report the quasi-periodic whistler-mode waves corresponding to electron temperature anisotropy T⊥/T// < 1 at the center of a macroscale magnetic hole (MH) near the Earth's magnetopause observed by the Magnetospheric Multiscale mission. A significant ultra-low frequency (ULF) wave of background magnetic field was observed in this MH. The ULF wave dramatically exacerbates the evolution of MH and the formation of the donut-shaped electron pitch angle distribution (PAD) in the macroscale MH. When the whistler-mode waves were generated, they are consistent with troughs of the ULF wave and density increases, which is also related to the butterfly type PAD at those moments. The analysis of dispersion relation and cyclotron resonance condition indicate that whistler-mode waves were mainly generated by the butterfly type PAD of electrons. Our results provides new insights into one possible excitation mechanism of whistler-mode wave.