Results 131 to 140 of about 11,105 (201)

Empirical Loss Timescales of Slot Region Electrons due to Plasmaspheric Hiss Based on Van Allen Probes Observations

Journal of Geophysical Research: Space Physics, 2021
Based on Van Allen Probes observations, in this study we perform a statistical analysis of the spectral intensities of plasmaspheric hiss at L‐shells of 1.8–3.0 in the slot region.
Qi Zhu, Xing Cao, X. Gu, B. Ni, Z. Xiang, S. Fu, D. Summers, M. Hua, Y. Lou, Xin Ma, Yingjie Guo, Deyu Guo, Wenxun Zhang   +12 more
semanticscholar   +1 more source

A Comparative Study on the Distributions of Incoherent and Coherent Plasmaspheric Hiss

Geophysical Research Letters, 2021
We perform a comparative study on the distributions of incoherent and coherent plasmaspheric hiss, based on the Van Allen Probe data. The statistics show that incoherent hiss (∼10–20 pT) is widely distributed in dayside plasmasphere, with peak ...
Zhaoguo He, Jiang Yu, Kun Li, N. Liu, Zewen Chen, J. Cui   +5 more
semanticscholar   +1 more source

Comprehensive Observations of Substorm‐Enhanced Plasmaspheric Hiss Generation, Propagation, and Dissipation

Geophysical Research Letters, 2020
Plasmaspheric hiss is an important whistler‐mode emission shaping the Van Allen radiation belt environment. How the plasmaspheric hiss waves are generated, propagate, and dissipate remains under intense debate.
N. Liu, Z. Su, Zhonglei Gao, Huinan Zheng, Yuming Wang, Shui Wang, Y. Miyoshi, I. Shinohara, Y. Kasahara, F. Tsuchiya, A. Kumamoto, S. Matsuda, M. Shoji, T. Mitani, T. Takashima, Y. Kazama, Bo‐Jhou Wang, Shiang‐Yu Wang, C. Jun, T. Chang, S. Tam, S. Kasahara, S. Yokota, K. Keika, T. Hori, A. Matsuoka   +25 more
semanticscholar   +1 more source

Lifetimes of Relativistic Electrons as Determined From Plasmaspheric Hiss Scattering Rates Statistics: Effects of ωpe/Ωce and Wave Frequency Dependence on Geomagnetic Activity

Geophysical Research Letters, 2020
Whistler‐mode hiss waves generally determine MeV electron lifetimes inside the plasmasphere. We use Van Allen Probes measurements to provide the first comprehensive statistical survey of plasmaspheric hiss‐driven quasi‐linear pitch‐angle diffusion rates ...
O. Agapitov, D. Mourenas, A. Artemyev, S. Claudepierre, G. Hospodarsky, J. Bonnell   +5 more
semanticscholar   +1 more source

Electron Diffusion by Coexisting Plasmaspheric Hiss and Chorus Waves: Multisatellite Observations and Simulations

Geophysical Research Letters, 2020
We report a rare event of intense plasmaspheric hiss and chorus waves simultaneously observed at the same L shell but different magnetic local times by Van Allen Probes and Magnetospheric Multiscale. Based on the measured waves and electron distributions,
J. Yu, J. Wang, L. Y. Li, J. Cui, J. Cao, Z. He   +5 more
semanticscholar   +1 more source

Combined Scattering of Radiation Belt Electrons by Low‐Frequency Hiss: Cyclotron, Landau, and Bounce Resonances

Geophysical Research Letters, 2020
Low‐frequency hiss is known to play an important role in the precipitation of radiation belt electrons by cyclotron, Landau, and bounce resonances. To investigate the potential combined scattering effect caused by these resonant processes, we analyze the
S. Fu, Juan Yi, B. Ni, Ruoxian Zhou, Zejun Hu, Xing Cao, X. Gu, Deyu Guo   +7 more
semanticscholar   +1 more source

Imbalanced Regressive Neural Network Model for Whistler‐Mode Hiss Waves: Spatial and Temporal Evolution

Journal of Geophysical Research - Space Physics
Whistler‐mode hiss waves are crucial to the dynamics of Earth's radiation belts, particularly in the scattering and loss of energetic electrons and forming the slot region between the inner and outer belts.
X. Chu, J. Bortnik, X. Shen, Q. Ma, Wen Li, D. Ma, D. Malaspina, Sheng Huang, D. P. Hartley   +8 more
semanticscholar   +1 more source

Statistical Study on Locally Generated High‐Frequency Plasmaspheric Hiss and Its Effect on Suprathermal Electrons: Van Allen Probes Observation and Quasi‐linear Simulation

Journal of Geophysical Research: Space Physics, 2020
The local generation of high‐frequency plasmaspheric hiss has recently been reported by a case study (He et al., 2019, https://doi.org/10.1029/2018GL081578).
Zhaoguo He, Jiang Yu, Lunjin Chen, Z. Xia, W. Wang, Kun Li, J. Cui   +6 more
semanticscholar   +1 more source

Dayside Low Energy Electron Precipitation Driven by Hiss Waves in the Presence of Ionospheric Photoelectrons

Journal of Geophysical Research: Space Physics, 2021
As was demonstrated by many observations, hiss waves are often to observed in the dayside plasmasphere and plumes. Previous studies of hiss waves have been focused on the scattering of energetic electrons of 10–1,000 keV energies and only recently this ...
G. Khazanov, Q. Ma
semanticscholar   +1 more source

Van Allen Probe Observations of Disappearance, Recovery and Patchiness of Plasmaspheric Hiss Following Two Consecutive Interplanetary Shocks: First Results

Journal of Geophysical Research: Space Physics, 2021
We present, for the first time, a plasmaspheric hiss event observed by the Van Allen probes in response to two successive interplanetary (IP) shocks occurring within an interval of ∼2 h on December 19, 2015. The first shock arrived at 16:16 UT and caused
S. Chakraborty, D. Chakrabarty, G. Reeves, D. Baker, S. Claudepierre, A. Breneman, D. Hartley, B. Larsen   +7 more
semanticscholar   +1 more source