scholarly journals Van Allen Probes observations of unusually low frequency whistler mode waves observed in association with moderate magnetic storms: Statistical study

2015 ◽  
Vol 42 (18) ◽  
pp. 7273-7281 ◽  
Author(s):  
C. A. Cattell ◽  
A. W. Breneman ◽  
S. A. Thaller ◽  
J. R. Wygant ◽  
C. A. Kletzing ◽  
...  
Keyword(s):  
Statistical Study ◽  
Low Frequency ◽  
Magnetic Storms ◽  
Whistler Mode ◽  
Van Allen Probes ◽  
Whistler Mode Waves

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

2021 ◽  
Author(s):  
He Zhang ◽  
Zhihong Zhong ◽  
Rongxin Tang ◽  
Xiaohua Deng ◽  
Haimeng Li ◽  
...  
Keyword(s):  
Low Frequency ◽  
Frequency Wave ◽  
Whistler Mode ◽  
Whistler Mode Waves

scholarly journals Statistical study of broadband whistler-mode waves detected by Kaguya near the Moon

2012 ◽  
Vol 39 (16) ◽  
pp. n/a-n/a ◽  
Author(s):  
Y. Tsugawa ◽  
Y. Katoh ◽  
N. Terada ◽  
T. Ono ◽  
H. Tsunakawa ◽  
...  
Keyword(s):  
Statistical Study ◽  
The Moon ◽  
Whistler Mode ◽  
Whistler Mode Waves

Low-frequency hiss-like whistler-mode waves generated by nonlinear three-wave interactions outside the plasmasphere

2019 ◽  
Vol 26 (12) ◽  
pp. 122901 ◽  
Author(s):  
Zhonglei Gao ◽  
Zhengyang Zou ◽  
Pingbing Zuo ◽  
Yi Wang ◽  
Zhaoguo He ◽  
...  
Keyword(s):  
Low Frequency ◽  
Wave Interactions ◽  
Whistler Mode ◽  
Whistler Mode Waves

Lightning‐Generated Whistler Amplitudes Measured by the Van Allen Probes

2021 ◽  
Author(s):  
Thomas Farges ◽  
Jean-Francois Ripoll ◽  
David Malaspina ◽  
Erin Lay ◽  
Gregory Cunningham ◽  
...  
Keyword(s):  
World Wide ◽  
Low Frequency ◽  
Whistler Waves ◽  
Mean Power ◽  
Very Low Frequency ◽  
Van Allen Probes ◽  
Whistler Mode Waves ◽  
The Mean ◽  
Vlf Waves ◽  
Field Wave

<p>This talk will show a statistical analysis of both electric and magnetic field wave amplitudes of very low frequency lightning‐generated whistlers (LGWs) based on the equivalent of 11.5 years of observations made by the Van Allen Probes. We complement this analysis with data from the ground‐based World Wide Lightning Location Network (WWLLN) to explore differences between satellite and ground‐based measurements. We will discuss how LGW mean amplitudes were generally found to be low compared with other whistler mode waves even though there exists extreme events (1 out of 5,000) that can reach 100 pT and contribute strongly to the mean power below L = 2. We will reveal a region of low wave amplitude existing below L=2 thanks to the denser dayside ionosphere, which prevents the intense equatorial lightning VLF waves from propagating through it. Below L = 1.5 at all MLT, LGW amplitudes are found to be weak while the ground‐level lightning activity is maximal. This suggests a difficulty of lightning VLF waves to penetrate / propagate / remain at low L‐shells, certainly due at least to the denser ionosphere during daytime. On the contrary, the mean LGW magnetic power (or RMS) remains nearly constant with respect to L‐shell. We will explain that this is due to strong to extreme LGWs that dominate the wave mean power to the point of compensating the decay of LGW occurrence at low L‐shell. Even though extreme LGW were found to be very powerful, particularly at low L and during night, the mean electric/magnetic power remains low compared with other whistler waves. This implies that LGW resonant effects on electrons are consequently long‐term effects that contribute to “age” trapped inner belt electron populations.</p>

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