Results 51 to 60 of about 11,105 (201)

Quantification of Energetic Electron Precipitation Driven by Plume Whistler Mode Waves, Plasmaspheric Hiss, and Exohiss

Geophysical Research Letters, 2019
Whistler mode waves are important for precipitating energetic electrons into Earth's upper atmosphere, while the quantitative effect of each type of whistler mode wave on electron precipitation is not well understood.
W. Li, X. Shen, Q. Ma, L. Capannolo, R. Shi, R. Redmon, J. Rodriguez, G. Reeves, C. Kletzing, W. Kurth, G. Hospodarsky   +10 more
semanticscholar   +1 more source

Scaling laws for the inner structure of the radiation belts

Geophysical Research Letters, 2017
Accurately modeling the evolution of the electron radiation belts within the plasmasphere represents both an imperative goal for space weather forecasting and a great challenge.
D. Mourenas, Q. Ma, A. V. Artemyev, W. Li   +3 more
doaj   +1 more source

Frequency‐Drifting Plasmaspheric Hiss: A Statistical Study From the Van Allen Probes Data

Geophysical Research Letters
Plasmaspheric hiss, a whistler‐mode emission confined in the high‐density plasmasphere, is of great interest to the space community attributed to its important role in inner magnetospheric dynamics.
Siyang Yi, Nigang Liu, Yi Xie, Zhaoguo He, Jiang Yu, Jun Cui   +5 more
doaj   +1 more source

Hiss Wave Evolution During Substorms Based on Van Allen Probes Observations

Geophysical Research Letters
Hiss waves frequently occur in the plasmasphere or plumes, playing a key role in energetic electron loss in the Earth's inner magnetosphere. While previous studies have linked hiss wave enhancements in the outer plasmasphere (just inside the plasmapause)
Xiao‐Chen Shen, Wen Li, Qianli Ma, Nigel P. Meredith, Xiangning Chu, Murong Qin, Luisa Capannolo, Sheng Huang   +7 more
doaj   +1 more source

Variability of Quasilinear Diffusion Coefficients for Plasmaspheric Hiss

Journal of Geophysical Research - Space Physics, 2019
In the outer radiation belt, the acceleration and loss of high‐energy electrons is largely controlled by wave‐particle interactions. Quasilinear diffusion coefficients are an efficient way to capture the small‐scale physics of wave‐particle interactions ...
C. Watt, H. Allison, N. Meredith, R. Thompson, S. Bentley, I. J. Rae, S. Glauert, R. Horne   +7 more
semanticscholar   +1 more source

Coordinated Ground-Satellite Observations of VLF Hiss Emissions at Syowa Station : Relationships between Hiss and Aurora

Antarctic Record, 1979
ISIS VLF data were received at Syowa Station, Antarctica in 1976. These data were compared with VLF and auroral data simultaneously observed on the around.
Kazuo MAKITA, Hiroshi FUKUNISHI, Takeo YOSHINO   +2 more
doaj   +1 more source

Observation of VLF Emissions at Syowa Station in 1970-1971 : I. Relationship between the Occurrence of Auroral Hiss Emissions and the Location of Auroral Arcs (Reports of the Japanese Antarctic Research Expedition)

Antarctic Record, 1973
VLF emissions were observed at Syowa Station by the 11th wintering party of the Japanese Antarctic Research Expedition in 1970-1971. The present paper deals particularly with the records of auroral hiss emissions, which are believed to be emitted by ...
Kazuo MAKITA, Hiroshi FUKUNISHI
doaj   +1 more source

Global Model of Plasmaspheric Hiss from Multiple Satellite Observations

2018 2nd URSI Atlantic Radio Science Meeting (AT-RASC), 2018
Gyroresonant wave particle interactions with plasmaspheric hiss play a fundamental role in the dynamics of the Earth's radiation belts and inner magnetosphere, affecting the loss of radiation belt electrons. Knowledge of the variability of the wave power
N. Meredith, R. Horne, T. Kersten, Wen Li, J. Bortnik, A. Sicard, K. Yearby   +6 more
semanticscholar   +1 more source

Analysis of the effect of cosmic noise absorption increase on propagation of auroral hiss to the ground

Solar-Terrestrial Physics
We analyze the effect of changes in the cosmic radio noise absorption in the lower ionosphere on propagation of the auroral hiss to the ground, using observational data from the Lovozero and Tumanny observatories.
Nikitenko Aleksandr, Lebed Olga, Larchenko Aleksey, Fedorenko Yuriy   +3 more
doaj   +1 more source

Hiss noise reduction method used for audio signals based on AAC bit-stream

Tongxin xuebao, 2013
A hiss noise reduction method used for audio signals based on AAC bit-stream in compressed domain was proposed.The input was AAC bit-stream derived from noisy audio signals,and the output was the enhanced AAC bit-stream used for decoder.First,Hiss noise ...
Feng DENG, Chang-chun BAO, Feng BAO
doaj   +2 more sources