“Zipper‐like” periodic magnetosonic waves: Van Allen Probes, THEMIS, and magnetospheric multiscale observations

J Li; C. A Kletzing; J Bortnik; W. S Kurth; W Li; G. B Hospodarsky; Q Ma; R. M Thorne; J Wygant; A Breneman; S Thaller; H. O Funsten; D. G Mitchell; J. W Manweiler; R. B Torbert; O Le Contel; R. E Ergun; P.‐A Lindqvist; K Torkar; R Nakamura; M Andriopoulou; C. T Russell

doi:10.1002/2016JA023536

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“Zipper‐like” periodic magnetosonic waves: Van Allen Probes, THEMIS, and magnetospheric multiscale observations

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“Zipper‐like” periodic magnetosonic waves: Van Allen Probes, THEMIS, and magnetospheric multiscale observations

J Li, C. A Kletzing, J Bortnik, W. S Kurth, W Li, G. B Hospodarsky, Q Ma, R. M Thorne, J Wygant, A Breneman, …

Journal of geophysical research. Space physics, Vol.122(2), pp.1600-1610

02/2017

DOI: 10.1002/2016JA023536

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Abstract

An interesting form of “zipper‐like” magnetosonic waves consisting of two bands of interleaved periodic rising‐tone spectra was newly observed by the Van Allen Probes, the Time History of Events and Macroscale Interactions during Substorms (THEMIS), and the Magnetospheric Multiscale (MMS) missions. The two discrete bands are distinct in frequency and intensity; however, they maintain the same periodicity which varies in space and time, suggesting that they possibly originate from one single source intrinsically. In one event, the zipper‐like magnetosonic waves exhibit the same periodicity as a constant‐frequency magnetosonic wave and an electrostatic emission, but the modulation comes from neither density fluctuations nor ULF waves. A statistical survey based on 3.5 years of multisatellite observations shows that zipper‐like magnetosonic waves mainly occur on the dawnside to noonside, in a frequency range between 10 fcp and fLHR. The zipper‐like magnetosonic waves may provide a new clue to nonlinear excitation or modulation process, while its cause still remains to be fully understood. Key Points “Zipper‐like” magnetosonic waves consist of two‐frequency bands with interleaved periodic emissions The two bands differ in frequency and intensity but probably originate from one single source Zipper‐like magnetosonic waves were mainly observed on dawnside to noonside in frequencies between 10 fcp and fLHR.

magnetosonic wave

radiation belt

rising‐tone

zipper‐like

Details

Title: Subtitle: “Zipper‐like” periodic magnetosonic waves: Van Allen Probes, THEMIS, and magnetospheric multiscale observations
Creators: J Li - University of California, Los Angeles
C. A Kletzing - University of Iowa
J Bortnik - University of California, Los Angeles
W. S Kurth - University of Iowa
W Li - Boston University
G. B Hospodarsky - University of Iowa
Q Ma - University of California, Los Angeles
R. M Thorne - University of California, Los Angeles
J Wygant - University of Minnesota
A Breneman - University of Minnesota
S Thaller - University of Minnesota
H. O Funsten - Los Alamos National Laboratory
D. G Mitchell - Johns Hopkins University Applied Physics Laboratory
J. W Manweiler - Fundamental Technologies LLC Lawrence Kansas USA
R. B Torbert - University of New Hampshire
O Le Contel - Université Paris-Sud
R. E Ergun - University of Colorado Boulder
P.‐A Lindqvist - KTH Royal Institute of Technology
K Torkar - Austrian Academy of Sciences
R Nakamura - Austrian Academy of Sciences
M Andriopoulou - Austrian Academy of Sciences
C. T Russell - University of California, Los Angeles
Resource Type: Journal article
Publication Details: Journal of geophysical research. Space physics, Vol.122(2), pp.1600-1610
DOI: 10.1002/2016JA023536
ISSN: 2169-9380
eISSN: 2169-9402
Number of pages: 11
Grant note: ECT (13–041) JHU/APL (967399; 921647; 937836; UMN 922613; NAS5‐01072) CNES CNRS‐INSU CNRS‐INSIS EMFISIS (1001057397:01) NSF Geospace Environment Modeling (AGS‐1405054) NASA (NNX13AI61G; NNX14AN85G; NAS5‐01072; NAS5‐01072)
Language: English
Date published: 02/2017
Academic Unit: Physics and Astronomy
Record Identifier: 9984199741402771

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