Results 21 to 30 of about 412 (169)

Generation of unusually low frequency plasmaspheric hiss [PDF]

Geophysical Research Letters, 2014
AbstractIt has been reported from Van Allen Probe observations that plasmaspheric hiss intensification in the outer plasmasphere, associated with a substorm injection on 30 September 2012, occurred with a peak frequency near 100 Hz, well below the typical plasmaspheric hiss frequency range, extending down to ∼20 Hz.
Chen, Lunjin, Thorne, Richard M., Bortnik, Jacob, Li, Wen, Horne, Richard B., Reeves, G. D., Kletzing, C. A., Kurth, W. S., Hospodarsky, G. B., Spence, H. E., Blake, J. B., Fennell, J. F.   +11 more
core   +7 more sources

Determining the Temporal and Spatial Coherence of Plasmaspheric Hiss Waves in the Magnetosphere [PDF]

Journal of Geophysical Research: Space Physics, 2021
AbstractPlasmaspheric hiss is one of the most important plasma waves in the Earth's magnetosphere to contribute to radiation belt dynamics by pitch‐angle scattering energetic electrons via wave‐particle interactions. There is growing evidence that the temporal and spatial variability of wave‐particle interactions are important factors in the ...
Shuai Zhang, I. Jonathan Rae, Clare E. J. Watt, Alexander W. Degeling, Anmin Tian, Quanqi Shi, Xiao‐Chen Shen, Andy W. Smith, Mengmeng Wang   +8 more
openaire   +5 more sources

Identification of Locally Generated Plasmaspheric Hiss

Geophysical Research Letters
In this study, we statistically analyze the wave properties of plasmaspheric hiss using data from the Van Allen Probes. The magnetic power spectral densities of hiss waves exhibit dependence on magnetic local time, geomagnetic activity, and the L‐shell ...
Mingyue Lu, Zhijie Qin, Hui Zhu, Yingying Zhao, Huicong Chen   +4 more
doaj   +2 more sources

Frequency‐Dependent Latitudinal Distributions of Plasmaspheric Plume Hiss Directionality and Amplitude

Geophysical Research Letters
Plasmaspheric plume hiss plays a crucial role in shaping Earth's electron radiation belts and influencing magnetosphere–ionosphere energy coupling. However, its generation mechanism remains contested between cyclic‐linear and localized‐nonlinear models ...
Zhiyong Wu, Zhenpeng Su, Huinan Zheng, Yuming Wang   +3 more
doaj   +2 more sources

Electron scattering by whistler‐mode ELF hiss in plasmaspheric plumes [PDF]

Journal of Geophysical Research: Space Physics, 2008
Nonadiabatic loss processes of radiation belt energetic electrons include precipitation loss to the atmosphere due to pitch‐angle scattering by various magnetospheric plasma wave modes. Here we consider electron precipitation loss due to pitch‐angle scattering by whistler‐mode ELF hiss in plasmaspheric plumes.
Summers, Danny, Ni, Binbin, Meredith, Nigel P., Horne, Richard B., Thorne, Richard M., Moldwin, Mark B., Anderson, Roger R.   +6 more
core   +5 more sources

Electron Scattering by Plasmaspheric Hiss in a Nightside Plume [PDF]

Geophysical Research Letters, 2018
AbstractPlasmaspheric hiss is known to play an important role in radiation belt electron dynamics in high plasma density regions. We present observations of two crossings of a plasmaspheric plume by the Van Allen Probes on 26 December 2012, which occurred unusually at the post‐midnight‐to‐dawn sector between L ~ 4–6 during a geomagnetically quiet ...
Wenxun Zhang, Song Fu, Xudong Gu
exaly   +2 more sources

The distribution of plasmaspheric hiss wave power with respect to plasmapause location

Geophysical Research Letters, 2016
In this work, Van Allen Probes data are used to derive terrestrial plasmaspheric hiss wave power distributions organized by (1) distance away from the plasmapause and (2) plasmapause distance from Earth.
David M. Malaspina, Allison N. Jaynes, Cory Boulé, Jacob Bortnik, Scott A. Thaller, Robert E. Ergun, Craig A. Kletzing, John R. Wygant   +7 more
doaj   +2 more sources

The Study on Modeling of Global Plasmaspheric Hiss Amplitude Based on Deep Learning Algorithm

Space Weather, 2023
Plasmaspheric hiss waves make great significance on the loss of electrons in the Earth's radiation belts. The prediction and reconstruction for global evolution plasmaspheric hiss are critical to investigate the dynamic process of radiation belt. In this
Rongxin Tang, Zhenghan Wang, Haimeng Li, Zhou Chen, Zhihai Ouyang, Xiaohua Deng   +5 more
doaj   +1 more source

Determining Plasmaspheric Densities from Observations of Plasmaspheric Hiss [PDF]

Journal of Geophysical Research: Space Physics, 2018
AbstractA new method of inferring electron plasma densities inside of the plasmasphere is presented. Utilizing observations of the electric and magnetic field wave power associated with plasmaspheric hiss, coupled with the cold plasma dispersion relation, permits calculation of the plasma density.
D. P. Hartley, C. A. Kletzing, S. De Pascuale, W. S. Kurth, O. Santolík   +4 more
openaire   +1 more source

Frequency‐Dependent Responses of Plasmaspheric Hiss to the Impact of an Interplanetary Shock

Geophysical Research Letters, 2021
Plasmaspheric hiss waves are essential for the pitch‐angle scattering and precipitation of energetic electrons and interplanetary shocks may affect these waves.
Haobo Fu, Chao Yue, Qianli Ma, Ning Kang, Jacob Bortnik, Qiu‐gang Zong, Xu‐zhi Zhou   +6 more
doaj   +1 more source